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Physiological Integrity

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Question 1001Question →

A client is restricted to strict bed rest following a prolonged surgical procedure. Which interventions should the nurse implement to promote physical comfort and prevent tissue breakdown? Select all that apply.

Select all that apply

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Answer: Turn and reposition the client at least every two hours.; Keep the bottom bed linens clean, dry, and free of wrinkles.; Apply a moisture barrier cream to the perineal skin after incontinent episodes.

Answer

The correct interventions are to turn and reposition the client at least every two hours, keep the bottom bed linens clean, dry, and free of wrinkles, and apply a moisture barrier cream to the perineal skin after incontinent episodes.
Promoting basic care and comfort for an immobile client requires proactive measures against pressure, friction, and moisture. Turning the client at least every two hours redistributes body weight and restores capillary blood flow to vulnerable areas. Keeping the bed linens dry and wrinkle-free eliminates physical friction that can abrade the epidermis. Finally, applying a moisture barrier protects the skin from maceration caused by exposure to incontinence.

Step-by-Step Solution

1
Identify the client's core risks.
The client is on strict bed rest, placing them at high risk for pressure injuries, skin breakdown, and general discomfort.
Recognizing mobility limitations is the first step in formulating a targeted basic care and comfort plan.
2
Select appropriate evidence-based comfort and skin integrity interventions.
Identified turning every two hours, smoothing linens, and applying moisture barriers as effective, foundational nursing actions.
These interventions directly mitigate pressure, friction, and moisture, which are the primary causes of skin breakdown.
3
Rule out contraindicated actions and improper delegations.
Eliminated high Fowler's positioning (increases shear), delegating assessments to UAPs (outside scope of practice), and using restraints for itching (violates least-restrictive-first principle).
Ensures the care plan strictly adheres to safety standards, legal scope of practice, and standard precautions.

Key Concept

Foundational interventions for maintaining skin integrity and promoting physical comfort in immobile clients.
Estimated Time:1m 0s
Question 1002Question →

A young adult who underwent an appendectomy two hours ago reports incisional pain rated as 8 on a 0-to-10 pain scale. The medication administration record includes a prescription for intravenous morphine sulfate. The client is currently resting with eyes closed, arouses easily to verbal stimuli, and has a respiratory rate of 10 breaths per minute. Which action should the nurse take?

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Answer: Withhold the prescribed opioid dose and notify the healthcare provider.

Answer

Withhold the prescribed opioid dose and notify the healthcare provider.
The correct action is to withhold the medication because the client's respiratory rate is 10 breaths per minute, which is below the normal range (12-20 breaths per minute). Administering an opioid to a client with an already compromised respiratory status can precipitate respiratory arrest. The nurse must prioritize physiological safety over pain relief.

Step-by-Step Solution

1
Assess the client's vital signs and sedation level.
The respiratory rate is 10 breaths per minute, which is below the normal adult range of 12 to 20 breaths per minute.
Baseline assessment is required before administering any central nervous system depressant.
2
Analyze the clinical findings against the planned intervention.
Morphine sulfate causes respiratory depression, which would worsen the client's already compromised respiratory status.
Ensuring the ABCs (Airway, Breathing, Circulation) is always the highest priority.
3
Determine the safest nursing action.
The medication must be withheld and the provider notified.
Administering the medication could lead to life-threatening respiratory arrest.

Key Concept

Opioid administration requires careful assessment of respiratory rate; doses must be withheld if the rate falls below 12 breaths per minute.
Question 1003Question →

A nurse is preparing to perform oral care for a client who is unconscious. To prevent the complication of aspiration, which position should the nurse place the client in?

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Answer: Side-lying (lateral) position

Answer

The side-lying (lateral) position is the safest choice to prevent aspiration during oral care for an unconscious client.
For an unconscious client, the primary safety concern during oral care is the risk of aspiration. Placing the client in a side-lying (lateral) position allows fluids and secretions to drain out of the mouth by gravity, preventing them from entering the airway.

Step-by-Step Solution

1
Assess the client's level of consciousness and ability to protect their airway.
The client is determined to be unconscious and cannot voluntarily swallow or expectorate fluids.
Identifying the client's inability to protect the airway dictates the need for gravity-assisted drainage during procedures.
2
Select a position that utilizes gravity to facilitate the drainage of fluids from the mouth.
The side-lying (lateral) position is chosen for the procedure.
This position ensures that any water, toothpaste, or oral secretions naturally flow out of the mouth rather than backward into the trachea.

Key Concept

Safe Positioning for Aspiration Precautions
Question 1004Question →

A 38-year-old client is being managed in the neuro-intensive care unit 12 hours after sustaining a severe traumatic brain injury. The client is intubated, mechanically ventilated, and has an intracranial pressure (ICP) monitor in place. To reduce the risk of secondary brain injury and physiological decompensation, which of the following assessment findings require the nurse to intervene immediately? Select all that apply.

Select all that apply

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Answer: Continuous intravenous infusion of 0.45% sodium chloride at 75 mL/hr; Arterial blood gas analysis revealing a PaCO2 of 52 mm Hg; Mean arterial pressure (MAP) current reading of 56 mm Hg; Urine output of 550 mL over the last hour with a specific gravity of 1.001

Answer

The findings that require immediate intervention are the intravenous infusion of 0.45% sodium chloride, a PaCO2 of 52 mm Hg, a MAP of 56 mm Hg, and a urine output of 550 mL over the last hour with a specific gravity of 1.001.
In the management of severe traumatic brain injury, mitigating the risk of secondary brain injury is the absolute priority. The infusion of 0.45% sodium chloride is hypotonic and directly worsens cerebral edema. A PaCO2 of 52 mm Hg represents hypercapnia, which triggers cerebral vasodilation and dangerously increases intracranial pressure. A MAP of 56 mm Hg is inadequate to sustain necessary cerebral perfusion pressure, threatening ischemic damage. Finally, profound polyuria with a dilute specific gravity (1.001) signals diabetes insipidus, an acute complication requiring urgent intervention to avert hypovolemic shock.

Step-by-Step Solution

1
Analyze the client's clinical condition and primary risk factors.
The client has a severe traumatic brain injury and is highly susceptible to increased intracranial pressure (ICP), cerebral ischemia, and neuro-endocrine complications.
Understanding the underlying pathology provides the framework to differentiate between protective therapies and harmful physiological decompensation.
2
Evaluate the current intravenous fluid orders.
The client is receiving 0.45% sodium chloride, which is a hypotonic solution. This requires immediate discontinuation.
Hypotonic fluids drive free water into brain cells, worsening cerebral edema and elevating ICP.
3
Evaluate the client's physical positioning.
The head of the bed is at 30 degrees with a neutral neck alignment. This is correct and expected.
This specific position optimally promotes cerebral venous return without compromising arterial blood flow.
4
Analyze the arterial blood gas (ABG) and hemodynamic parameters.
A PaCO2 of 52 mm Hg (hypercapnia) and a MAP of 56 mm Hg (hypotension) are life-threatening. The PaO2 of 94 mm Hg is entirely normal.
Hypercapnia induces cerebral vasodilation (raising ICP), while a low MAP critically reduces cerebral perfusion pressure, leading to anoxic brain injury.
5
Assess the renal output data.
A one-hour urine output of 550 mL with a specific gravity of 1.001 is highly abnormal.
These findings indicate the onset of diabetes insipidus, necessitating immediate medical management to prevent profound hypovolemia.

Key Concept

Preventing secondary brain injury requires strict maintenance of cerebral hemodynamics (adequate MAP for perfusion, avoiding hypercapnia to prevent vasodilation), controlling cerebral edema (avoiding hypotonic fluids), and vigilant monitoring for acute neuro-endocrine failure (diabetes insipidus).
Question 1005Question →

A nurse is monitoring a client admitted 6 hours ago with a complex pelvic fracture sustained from blunt force trauma. Which subtle trend in the client's assessment data is the most reliable early indicator of impending hemodynamic compromise?

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Answer: Blood pressure changing from 130/70 mm Hg to 114/84 mm Hg

Answer

The blood pressure changing from 130/70 mm Hg to 114/84 mm Hg is the most reliable early indicator.
Pelvic fractures carry a high risk for severe hemorrhage. A narrowing pulse pressure (the difference between systolic and diastolic pressure decreasing from 60 mm Hg to 30 mm Hg in this scenario) is a classic early sign of compensatory shock. As circulating blood volume drops, peripheral vasoconstriction raises or maintains the diastolic pressure while the systolic pressure begins to fall, resulting in a narrowed pulse pressure before overt hypotension occurs.

Step-by-Step Solution

1
Identify the primary physiological risk associated with a complex pelvic fracture.
The client is at extremely high risk for massive, hidden retroperitoneal hemorrhage and subsequent hypovolemic shock.
The pelvis houses major blood vessels, and fractures can lacerate these structures, leading to significant concealed blood loss.
2
Analyze the blood pressure trend provided in the correct option to determine the pulse pressure.
The initial pulse pressure (systolic minus diastolic) is 60 mm Hg (130 - 70). The subsequent pulse pressure is 30 mm Hg (114 - 84).
Calculating the pulse pressure is necessary to identify subtle hemodynamic shifts before gross hypotension occurs.
3
Evaluate the clinical significance of a narrowing pulse pressure.
The pulse pressure has narrowed significantly from 60 to 30 mm Hg, which is a key indicator of early compensated shock.
As circulating blood volume decreases, the sympathetic nervous system triggers peripheral vasoconstriction. This elevates or maintains diastolic pressure while systolic pressure begins to drift downward, creating a narrowed pulse pressure.
4
Differentiate this critical finding from expected or less definitive assessment data.
The other trends (urine output of 35 mL/hr, heart rate up to 96, and movement-related pain) are either expected or still within normal physiological limits.
Prioritizing the narrowing pulse pressure allows for immediate medical intervention before the client progresses to uncompensated shock.

Key Concept

Early recognition of hypovolemic shock via narrowing pulse pressure
Question 1006Question →

A nurse is preparing to insert a nasogastric (NG) tube for a client who requires enteral tube feedings. To reduce the risk of respiratory complications and aspiration, arrange the following nursing actions in the correct chronological sequence.

Drag items to arrange them in the correct order

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Answer

The correct sequence is to first position the client upright, measure the correct length of the tube, safely advance the tube while the client swallows with their neck flexed, perform an initial bedside pH check, and finally verify placement with a radiograph before use.
Safe insertion of a nasogastric tube requires a systematic approach to prevent respiratory trauma and aspiration. The process begins with proper anatomical positioning (high Fowler's) and measuring the necessary length to reach the stomach. Advancing the tube with the neck flexed during swallowing protects the airway. Finally, while bedside methods like pH testing provide preliminary data, radiographic confirmation is mandatory before using the tube to eliminate the risk of administering feedings into the lungs.

Step-by-Step Solution

1
Place the client in a high Fowler's position.
The client is sitting upright.
This minimizes aspiration risk and uses gravity to assist with the tube's descent.
2
Measure the tube from the tip of the nose to the earlobe, and then to the xiphoid process.
The target insertion length is identified and marked on the tube.
This ensures the tube is advanced exactly to the stomach, preventing coiling or dangerous misplacement.
3
Instruct the client to flex their head toward their chest and swallow as the tube is advanced.
The tube passes the oropharynx and enters the esophagus.
Flexing the neck anatomically protects the airway by causing the epiglottis to cover the tracheal opening.
4
Secure the tube to the client's nose and aspirate gastric contents to test the pH.
Initial bedside verification indicates a highly acidic gastric environment.
A pH of less than 5 strongly suggests the tube is in the stomach rather than the respiratory tract or intestines.
5
Obtain a radiograph to definitively confirm tube placement before initiating feedings.
Absolute visual confirmation of placement is achieved.
This is the only definitive method to ensure the tube is not in the respiratory tract before administering anything through it, strictly reducing the risk of fatal pulmonary aspiration.

Key Concept

Nasogastric Tube Insertion Safety and Verification
Question 1007Question →

An older adult client is hospitalized after a severe bout of gastroenteritis with frequent liquid stools over the last three days. The laboratory reports the following arterial blood gas values: pH 7.297.29, PaCO2PaCO_2 42 mm Hg42\text{ mm Hg}, and HCO3−HCO_3^- 17 mEq/L17\text{ mEq/L}. Based on these results, which primary acid-base imbalance should the nurse identify?

Show answer & explanation

Answer: Metabolic acidosis

Answer

The client is experiencing metabolic acidosis.
The correct answer is metabolic acidosis because the arterial blood gas results show a low pH (7.297.29), indicating acidosis, paired with a low bicarbonate level (17 mEq/L17\text{ mEq/L}). The normal PaCO2PaCO_2 (42 mm Hg42\text{ mm Hg}) confirms that the primary disturbance is metabolic, which aligns with the clinical history of excessive lower gastrointestinal bicarbonate loss through severe diarrhea.

Step-by-Step Solution

1
Analyze the pH value to determine the primary state.
The pH is 7.297.29, which is less than the normal range of 7.357.35 to 7.457.45.
A pH below 7.357.35 defines acidemia (acidosis).
2
Analyze the PaCO2PaCO_2 value to check for respiratory involvement.
The PaCO2PaCO_2 is 42 mm Hg42\text{ mm Hg}, which is within the normal range of 3535 to 45 mm Hg45\text{ mm Hg}.
A normal PaCO2PaCO_2 rules out a primary respiratory disturbance as the cause of the acidosis.
3
Analyze the HCO3−HCO_3^- value to check for metabolic involvement.
The HCO3−HCO_3^- is 17 mEq/L17\text{ mEq/L}, which is less than the normal range of 2222 to 26 mEq/L26\text{ mEq/L}.
A decreased HCO3−HCO_3^- level directly corresponds with the acidic pH, confirming a metabolic origin.

Key Concept

Interpretation of uncompensated acid-base imbalances using arterial blood gas values.
Question 1008Question →

A nurse is managing the hygiene and comfort of an older adult client who is 24 hours post-operative following a right total hip arthroplasty (posterior approach). The client reports severe sacral and heel discomfort and requests assistance with a bed bath and repositioning. Which nursing intervention is the most appropriate to ensure safe basic care and comfort?

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Answer: Place an abduction wedge between the client's lower extremities, utilize assistance to turn the client onto the unaffected left side, and float the heels off the mattress using a pillow placed under the calves.

Answer

The correct intervention is to place an abduction wedge between the client's legs to maintain alignment, turn the client onto the unaffected side to relieve sacral pressure, and float the heels by placing a pillow underneath the calves.
Clients recovering from a posterior approach total hip arthroplasty are at a high risk for hip dislocation if the joint is flexed beyond 90 degrees, adducted, or internally rotated. Using an abduction wedge between the legs safely prevents adduction while turning and resting. Turning the client onto their unaffected (left) side offloads pressure from the sacrum and the surgical site. Furthermore, placing a pillow lengthwise under the calves effectively 'floats' the heels off the mattress, relieving pressure without causing tissue damage or compromising lower extremity circulation.

Step-by-Step Solution

1
Identify the surgical precautions for the client's specific procedure.
A posterior approach total hip arthroplasty requires preventing hip flexion greater than 90 degrees, hip adduction, and internal rotation.
Violating these precautions can cause an immediate and severe dislocation of the new hip prosthesis.
2
Evaluate the client's complaints of sacral and heel discomfort.
The discomfort is recognized as an early warning sign of tissue ischemia and potential pressure injury development.
Immobile, older adult clients are at a high risk for skin breakdown over bony prominences, requiring immediate pressure offloading.
3
Select the intervention that simultaneously addresses hygiene needs, pressure relief, and surgical safety.
Using an abduction wedge prevents adduction during turning, rolling to the unaffected side offloads the sacrum safely, and floating heels with a calf pillow relieves heel pressure.
This combination of actions satisfies all safety parameters while maximizing the client's basic care and comfort.

Key Concept

Postoperative Positioning and Pressure Injury Prevention
Estimated Time:2m 0s
Question 1009Question →

A client who recently experienced a cerebrovascular accident has residual right-sided weakness. The nursing staff is planning to assist the client from the bed into a wheelchair for the first time. Arrange the following steps in the correct chronological sequence to execute a safe stand-pivot transfer.

Drag items to arrange them in the correct order

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Answer

The correct sequence is to first position the wheelchair on the unaffected left side, then assist the client to sit and apply the transfer belt, brace the weak right leg, assist the client to stand and pivot on the strong left foot, and finally instruct the client to reach back with their left hand before sitting.
The correct sequence prioritizes client safety by leveraging their intact mobility. Placing the wheelchair on the unaffected (left) side ensures the client can bear weight and pivot safely on their strong leg. Once the environment is prepared, the client is brought to a seated position to safely apply the transfer belt. The nurse must then brace the hemiparetic right leg to prevent it from buckling during the standing phase. Finally, the client uses their strong left arm to reach for the armrest, which prevents them from falling abruptly into the chair.

Step-by-Step Solution

1
Position the wheelchair on the client's left side at a 45-degree angle to the bed and lock the wheels.
The destination is safely secured and accessible via the client's strong side.
Transferring toward the unaffected side allows the client to bear their own weight and assist with the movement.
2
Assist the client to sit on the edge of the bed with feet flat on the floor and apply a transfer belt.
The client is in a stable starting position with a secure grip point for the nurse.
A transfer belt must be applied while seated to ensure it is snug and will not slide up the rib cage during lifting.
3
Stand facing the client and brace their right knee and foot with your own knee and foot.
The hemiparetic leg is physically blocked from collapsing.
Clients with hemiparesis lack the muscle tone to keep the affected leg extended; bracing it provides essential joint stability.
4
Grasp the transfer belt, assist the client to a standing position, and guide them to pivot on their left foot.
The client successfully rotates their body toward the wheelchair.
Weight is borne primarily by the intact, strong leg during the pivot motion to prevent a fall.
5
Instruct the client to reach back with their left hand to grasp the wheelchair armrest before lowering into the seat.
The client safely and slowly sits down.
Using the strong arm provides stability and controls the speed of the descent, preventing the client from dropping abruptly.

Key Concept

During a bed-to-chair transfer for a client with hemiparesis, equipment must be placed on the unaffected side, and the nurse must brace the affected extremity to prevent buckling.
Question 1010Question →

A client with a recent diagnosis of Guillain-Barré syndrome is being closely monitored on the medical-surgical unit. The nurse observes that the client is becoming increasingly lethargic, and their respiratory rate has decreased to 8 breaths per minute with weak chest wall movement. Based on these clinical findings, which of the following arterial blood gas (ABG) results should the nurse most anticipate?

Show answer & explanation

Answer: pH 7.25, PaCO2PaCO_2 62 mm Hg, HCO3−HCO_3^- 24 mEq/L

Answer

The ABG result showing pH 7.25, PaCO2PaCO_2 62 mm Hg, and HCO3−HCO_3^- 24 mEq/L, indicating acute respiratory acidosis.
The correct answer displays uncompensated respiratory acidosis. Guillain-Barré syndrome can lead to progressive neuromuscular weakness, eventually affecting the muscles of respiration. A respiratory rate of 8 breaths per minute with weak chest excursions indicates severe hypoventilation, which causes the body to retain carbon dioxide. This rapid accumulation of carbon dioxide (PaCO2PaCO_2 > 45 mm Hg) drives the blood pH down into an acidotic state (pH < 7.35). Because this is an acute change, the kidneys have not yet retained bicarbonate (HCO3−HCO_3^-) to compensate, leaving it within the normal range (22-26 mEq/L).

Step-by-Step Solution

1
Analyze the client's clinical presentation.
The client has Guillain-Barré syndrome, is lethargic, and is hypoventilating with a respiratory rate of 8 breaths per minute and weak chest movement.
Understanding the physiological impact of the disease process helps predict the resulting acid-base imbalance.
2
Determine the physiological consequence of hypoventilation.
Inadequate ventilation leads to the retention of carbon dioxide (CO2CO_2) in the lungs and bloodstream.
CO2CO_2 acts as an acid in the body, so accumulating CO2CO_2 drives the blood pH lower.
3
Correlate the physiological change with expected ABG values.
The expected ABG will show a low pH (acidosis), an elevated PaCO2PaCO_2 (respiratory origin), and a normal HCO3−HCO_3^- since the kidneys have not had time to compensate.
This combination of values precisely defines uncompensated respiratory acidosis.

Key Concept

Arterial Blood Gas (ABG) Interpretation in Neuromuscular Respiratory Failure
Question 1011Question →

A clinical educator is evaluating a nursing student preparing to administer an intermittent intravenous (IV) antibiotic infusion into a patient's dedicated primary continuous IV line. Which actions by the student demonstrate correct application of parenteral therapy safety principles? Select all that apply.

Select all that apply

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Answer: Cleansing the designated needleless connector on the primary tubing with an approved antiseptic wipe before attachment.; Confirming the physical and chemical compatibility of the prescribed antibiotic with the primary fluid prior to administration.; Suspending the secondary medication bag on the intravenous pole at a level higher than the primary fluid container.

Answer

The correct actions include cleansing the needleless connector before attachment, confirming fluid compatibility, and suspending the secondary bag higher than the primary fluid.
Safe parenteral therapy requires strict adherence to infection control (cleansing the connector), verification of chemical compatibility to prevent precipitation, and proper equipment setup (hanging the secondary bag higher to utilize gravity). These actions ensure the medication is delivered safely and effectively without compromising the patient's vascular access.

Step-by-Step Solution

1
Evaluate the requirement for infection control during IV administration.
Identify that scrubbing the needleless connector is essential to prevent central line-associated or peripheral bloodstream infections.
Maintaining aseptic technique is a fundamental safety principle in parenteral therapy.
2
Assess the principles of drug compatibility.
Determine that the nurse must verify the antibiotic is compatible with the continuous IV fluid.
Mixing incompatible solutions can cause dangerous precipitation in the IV line.
3
Analyze the mechanical setup of a secondary IV infusion.
Recognize that the secondary (piggyback) bag must be hung higher than the primary bag.
Gravity allows the higher bag to exert more hydrostatic pressure, infusing first.
4
Review the distractors for safety and delegation violations.
Eliminate options that involve infusing incompatible fluids, delegating initial assessments to UAP, or estimating pump rates.
These actions directly violate the nursing scope of practice and medication safety protocols.

Key Concept

Safe Parenteral Medication Administration Principles
Question 1012Question →

A 62-year-old client is in the progressive care unit 8 hours after a left pneumonectomy. The client appears lethargic and is receiving supplemental oxygen at 3 L/min via nasal cannula. During the assessment, the nurse observes the client lying in a right lateral decubitus position. The most recent arterial blood gas (ABG) values are as follows:

ParameterResult
pH7.28
PaCO2PaCO_258 mm Hg
HCO3−HCO_3^-25 mEq/L
PaO2PaO_264 mm Hg

Based on these clinical findings, what is the priority nursing action to reduce the risk of a life-threatening physiological complication?

Show answer & explanation

Answer: Assist the client into a supine or left lateral position to facilitate maximal expansion of the remaining lung.

Answer

Assist the client into a supine or left lateral position to facilitate maximal expansion of the remaining lung.
The client is experiencing acute uncompensated respiratory acidosis due to severe hypoventilation. Following a pneumonectomy, placing the client on the unoperated side (the right side, in this case) restricts the expansion of the sole functioning lung due to gravity and the weight of the mediastinum. To prevent a dangerous mediastinal shift and optimize gas exchange, the client must be positioned supine or on the operative side (left lateral). This allows the remaining functional lung to fully expand, which will improve ventilation and resolve the hypercapnia.

Step-by-Step Solution

1
Analyze the arterial blood gas (ABG) values.
The ABG reveals uncompensated respiratory acidosis (low pH of 7.28, high PaCO2PaCO_2 of 58 mm Hg) accompanied by hypoxemia.
An elevated PaCO2PaCO_2 indicates acute hypoventilation and CO2CO_2 retention.
2
Correlate the clinical findings with the surgical history.
The client had a left pneumonectomy, meaning the right lung is the only remaining functional lung in the thoracic cavity.
Understanding the anatomical alteration is necessary to pinpoint the mechanical cause of the hypoventilation.
3
Evaluate the physiological impact of the client's current physical position.
The client is in a right lateral decubitus position, which mechanically compresses the right lung due to gravity and body weight.
Positional restriction of the sole functioning lung is preventing adequate chest excursion, leading to the hypoventilation and resulting acidosis.
4
Determine the corrective priority action to reduce further risk.
Reposition the client to the supine or left lateral (operative) position.
This frees the non-operative lung to expand fully, thereby improving ventilation mechanics and reversing the life-threatening hypercapnia.

Key Concept

Post-pneumonectomy Positioning and Respiratory Acidosis
Question 1013Question →

A healthcare team is managing a 75-kg client who is on a continuous intravenous (IV) heparin drip for a pulmonary embolism. The infusion pump is currently set to deliver 20 units/kg/hr20 \text{ units/kg/hr}. Without warning, the client experiences profound hematemesis, epistaxis, and a sudden decline in consciousness. After stopping the heparin infusion, the nurse receives a stat prescription for intravenous protamine sulfate. The pharmacy dispenses protamine sulfate in vials with a concentration of 10 mg/mL10 \text{ mg/mL}. According to the facility's standard reversal protocol, 1 mg1 \text{ mg} of protamine sulfate neutralizes 100 units100 \text{ units} of heparin.

Based on the total amount of heparin the client received over the last hour, what is the exact volume in milliliters (mL) of protamine sulfate the nurse must administer (no rounding required), and what is a critical safety consideration during its administration?

Show answer & explanation

Answer: 1.5 mL; Administer the dose slowly over 1 to 3 minutes to minimize the risk of severe hypotension and bradycardia.

Answer

The correct volume is 1.5 mL, and the medication must be administered slowly over 1 to 3 minutes to prevent severe hypotension and bradycardia.
The client received 1,500 units1,500 \text{ units} of heparin in the last hour (75 kg×20 units/kg/hr75 \text{ kg} \times 20 \text{ units/kg/hr}). Since 1 mg1 \text{ mg} of protamine sulfate neutralizes 100 units100 \text{ units} of heparin, the client requires 15 mg15 \text{ mg} of protamine (1,500÷1001,500 \div 100). Using the dispensed concentration of 10 mg/mL10 \text{ mg/mL}, the required volume is 1.5 mL1.5 \text{ mL} (15 mg÷10 mg/mL15 \text{ mg} \div 10 \text{ mg/mL}). Furthermore, a critical pharmacological safety principle is that protamine sulfate must be administered slowly (no faster than 50 mg over 10 minutes) to prevent dangerous adverse effects, including sudden profound hypotension, bradycardia, and pulmonary hypertension.

Step-by-Step Solution

1
Calculate the total units of heparin administered in the last hour.
75 kg×20 units/kg/hr=1,500 units/hr75 \text{ kg} \times 20 \text{ units/kg/hr} = 1,500 \text{ units/hr}.
To determine the exact amount of circulating heparin that requires reversal.
2
Calculate the milligrams of protamine sulfate required.
1,500 units÷100 units/mg=15 mg1,500 \text{ units} \div 100 \text{ units/mg} = 15 \text{ mg}.
The protocol states that 1 mg of protamine neutralizes 100 units of heparin.
3
Calculate the final volume of protamine sulfate to administer.
15 mg÷10 mg/mL=1.5 mL15 \text{ mg} \div 10 \text{ mg/mL} = 1.5 \text{ mL}.
To determine the exact liquid volume to draw up from the dispensed vial.
4
Determine the safest rate of intravenous administration.
Administer slowly over 1 to 3 minutes.
Rapid IV push of protamine sulfate causes speed shock, which presents as severe hypotension, bradycardia, and anaphylactoid reactions.

Key Concept

Pharmacological and Parenteral Therapies - Antidote Administration and Medication Safety
Estimated Time:3m 0s
Question 1014Question →

A 72-year-old client is recovering in the outpatient care unit following a bronchoscopy performed with moderate sedation. Which of the following actions should the nurse take to reduce the client's risk of complications? Select all that apply.

Select all that apply

Show answer & explanation

Answer: Keep the client nothing by mouth (NPO) until the gag reflex returns.; Assess respiratory rate, oxygen saturation, and lung sounds frequently.

Answer

The nurse should keep the client NPO until the gag reflex returns and frequently assess the client's respiratory rate, oxygen saturation, and lung sounds.
Following a bronchoscopy, the local anesthetic used in the throat suppresses the gag reflex, creating a high risk for aspiration. Keeping the client NPO until this reflex returns is an essential risk-reduction strategy. Additionally, moderate sedation can cause respiratory depression, making the frequent monitoring of oxygenation and lung sounds absolutely critical to detect and manage complications early.

Step-by-Step Solution

1
Identify the primary physiological risks associated with a bronchoscopy and moderate sedation.
The main risks are aspiration (due to topical anesthetics depressing the gag reflex) and respiratory depression/hypoxia (from the sedative medications).
Understanding procedure-specific risks dictates which focused nursing assessments and interventions are required.
2
Evaluate the correct interventions for airway and breathing protection.
Keeping the client NPO prevents aspiration, and frequent respiratory assessment detects hypoxia early.
Airway and breathing are the highest priorities in post-operative and post-procedure care.
3
Analyze the remaining options to identify unsafe practices or clinical errors.
Supine positioning increases aspiration risk, initial airway assessments cannot be delegated, and sudden confusion is a sign of hypoxia, not normal aging.
Recognizing unsafe actions prevents adverse client outcomes and legal/ethical delegation breaches.

Key Concept

Post-procedure care, airway protection, and complication monitoring following moderate sedation.
Question 1015Question →

A nurse is assessing a client who is recovering from a ruptured appendix. The client's temperature is 39.1°C (102.4°F), heart rate is 118 beats/min, respiratory rate is 24 breaths/min, and blood pressure is 100/60 mm Hg. The client's skin feels warm and is visibly flushed. These assessment findings most strongly indicate the early stages of which complication?

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Answer: Septic shock

Answer

Septic shock
The correct answer is septic shock because the client has a known source of infection (ruptured appendix) and is exhibiting the classic signs of the early, hyperdynamic ('warm') phase of this condition. During this phase, massive systemic vasodilation occurs, resulting in warm, flushed skin, accompanied by a high fever, tachycardia, and tachypnea.

Step-by-Step Solution

1
Analyze the client's history and vital signs.
The client has a source of infection (ruptured appendix) and presents with fever, tachycardia, tachypnea, and borderline low blood pressure.
Identifying systemic inflammatory responses is crucial for determining the underlying pathology.
2
Evaluate the specific skin assessment findings.
The skin is warm and flushed.
Skin temperature and color help differentiate between the types of shock (e.g., massive vasodilation vs. intense vasoconstriction).
3
Synthesize the findings to identify the complication.
The combination of an infection source, systemic inflammatory signs, and warm, flushed skin from vasodilation points to the hyperdynamic phase of septic shock.
Recognizing this specific triad of symptoms enables prompt, life-saving interventions.

Key Concept

Early indicators of septic shock (hyperdynamic phase)
Question 1016Question →

A critical care nurse is managing a mechanically ventilated client equipped with a triple-lumen central venous catheter. The three lumens are continuously delivering norepinephrine, total parenteral nutrition (TPN), and a lipid-based propofol emulsion. The client's cardiac monitor suddenly displays atrial fibrillation with a ventricular response of 152 beats per minute, and the provider orders an emergent intravenous bolus of diltiazem. After verifying that diltiazem is incompatible with both the vasopressor and the sedative, which action is the most appropriate for the nurse to take?

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Answer: Initiate a new peripheral intravenous access site to administer the prescribed calcium channel blocker

Answer

Initiate a new peripheral intravenous access site to administer the prescribed calcium channel blocker.
When a client requires an emergent intravenous medication but all existing central venous catheter lumens are occupied by continuous infusions that cannot be safely interrupted or are incompatible, the nurse must establish a new peripheral intravenous access. Norepinephrine is a life-sustaining vasoactive drip that must never be paused or flushed, as flushing would deliver a dangerous bolus of the vasopressor. Total parenteral nutrition (TPN) requires a strictly dedicated line due to high risks of central line infection and drug incompatibility. Propofol is incompatible with the prescribed medication and provides necessary continuous sedation for mechanical ventilation. Therefore, securing a new peripheral line is the only safe method to administer the diltiazem bolus without compromising the client's hemodynamic or respiratory stability.

Step-by-Step Solution

1
Evaluate the existing continuous intravenous infusions.
Identified norepinephrine, TPN, and propofol infusing simultaneously in the three central lumens.
To determine if any current intravenous access lines can be safely utilized for an emergent intravenous push medication.
2
Analyze the compatibility and safety constraints of each continuous infusion.
Determined that norepinephrine cannot be flushed, TPN requires a strictly dedicated line, and propofol is incompatible with the ordered medication.
To prevent life-threatening adverse drug reactions, loss of airway sedation, or severe hemodynamic collapse.
3
Determine the safest route of administration for the emergent bolus.
Decided to start a new peripheral intravenous line.
When all central lines are occupied by incompatible or dedicated continuous infusions, establishing a new access site is required to safely administer the medication without compromising client stability.

Key Concept

Management of multiple continuous intravenous infusions and drug compatibility in critical care
Question 1017Question →

A nurse is administering a newly prescribed intravenous antibiotic. Ten minutes into the infusion, the client reports severe shortness of breath, a tight feeling in the throat, and dizziness. The client's blood pressure is 82/5082/50 mm Hg and heart rate is 128128 bpm. Arrange the following nursing interventions in the correct order of priority.

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Answer

The correct sequence is to stop the triggering agent, secure the airway and provide oxygen, administer the first-line medication (epinephrine), support circulation with positioning and fluids, and finally administer adjunctive medications.
In any medical emergency involving a continuous intravenous triggering agent, the first and most critical action is to stop the infusion. Following this, the nurse must adhere to the ABC (Airway, Breathing, Circulation) framework. Ensuring a patent airway and providing oxygen addresses the most immediate threat to life (laryngeal edema and hypoxia). Once the airway is supported, intramuscular epinephrine is the absolute priority pharmacological intervention, as it directly reverses bronchospasm and severe vasodilation. After epinephrine administration, circulatory support is provided through leg elevation and rapid isotonic fluid boluses to treat distributive shock. Finally, adjunctive medications such as antihistamines and corticosteroids are administered to alleviate ongoing symptoms and prevent biphasic allergic reactions.

Step-by-Step Solution

1
Identify the immediate threat and remove the cause.
The intravenous antibiotic infusion is stopped immediately.
Halting the exposure to the allergen prevents the anaphylactic reaction from rapidly worsening.
2
Apply the Airway, Breathing, Circulation (ABC) prioritization framework.
A patent airway is maintained, and high-flow oxygen is administered.
Hypoxia and complete airway occlusion from laryngeal edema represent the most immediate threats to life.
3
Administer life-saving primary pharmacotherapy.
Intramuscular epinephrine is administered into the vastus lateralis.
Epinephrine directly counteracts anaphylaxis by causing rapid bronchodilation and vasoconstriction, thereby improving the airway and blood pressure.
4
Manage the profound distributive shock (Circulation).
The lower extremities are elevated, and a rapid intravenous fluid bolus is initiated.
Anaphylaxis causes massive vasodilation and capillary leak. Positioning and volume replacement help restore adequate venous return and systemic perfusion.
5
Administer secondary supportive treatments.
Intravenous diphenhydramine and corticosteroids are administered.
These adjunctive medications block further histamine release and reduce inflammation, helping to prevent a delayed biphasic reaction.

Key Concept

Prioritization of clinical interventions in acute anaphylactic shock utilizing the ABC framework.
Question 1018Question →

A 65-year-old client admitted with heart failure reports acute, severe nausea. The client's current vital signs include a blood pressure of 118/74 mmHg and a heart rate of 82 bpm. The healthcare provider prescribes 4 mg of ondansetron to be administered via intravenous (IV) push through an existing intermittent peripheral IV catheter (saline lock). Arrange the following steps in the correct chronological order for safely administering this parenteral medication.

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Answer

The correct sequence for administering an IV push medication via a saline lock is to clean the port, assess patency with a saline flush, clean the port again, administer the medication, and perform a final saline flush at the medication's administration rate.
The standard sequence for administering medication via an intermittent IV lock utilizes the SAS method (Saline, Administer, Saline) while prioritizing infection control and patient safety. The nurse must scrub the hub before every connection. First, patency is verified with a saline flush. Next, the medication is administered at the appropriate rate. Finally, a post-administration flush clears the line, which must be given at the same rate as the medication to prevent a rapid bolus of the residual drug.

Step-by-Step Solution

1
Clean the injection port of the intermittent IV catheter with an antimicrobial swab.
The port is effectively disinfected.
Prevents the introduction of microorganisms from the environment into the client's bloodstream.
2
Attach a syringe containing normal saline, aspirate for a blood return, and flush the line.
Intravenous catheter patency is confirmed.
Ensures the IV catheter is properly located in the vein and has not infiltrated before administering a potentially irritating medication.
3
Clean the injection port again with a new antimicrobial swab and attach the medication syringe.
The port is re-disinfected prior to medication attachment.
Maintains strict asepsis, as the port was exposed when the previous saline syringe was removed.
4
Administer the prescribed ondansetron slowly over the recommended amount of time.
The medication is safely delivered into the bloodstream.
Pushing medication at the correct rate prevents adverse reactions such as speed shock or hemodynamic instability.
5
Clean the injection port and flush the catheter with normal saline at the same rate the medication was administered.
The medication is completely cleared from the tubing and the lock is maintained.
Flushing clears the medication line. Pushing the final flush at the same rate as the medication ensures that any residual drug in the catheter is not inadvertently delivered as a rapid bolus.

Key Concept

Safe administration of intravenous push medications via an intermittent peripheral IV lock requires strict aseptic technique, verification of catheter patency, and proper flushing protocols.
Question 1019Question →

A nurse on a surgical rehabilitation unit is caring for a client who is 48 hours post-operative following a right above-the-knee amputation. Which intervention should the nurse implement?

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Answer: Assist the client into a prone position for 20 to 30 minutes every 3 to 4 hours.

Answer

Assist the client into a prone position for 20 to 30 minutes every 3 to 4 hours.
The correct action is to assist the client into a prone position multiple times a day. This position allows the hip joint to extend completely, counteracting the natural tendency of the hip flexor muscles to shorten and form a contracture following a lower extremity amputation. Preventing a contracture is crucial for successful prosthetic training.

Step-by-Step Solution

1
Identify the client's procedure and the current post-operative timeframe.
The client is 48 hours post-operative for a right above-the-knee amputation.
The timeframe determines the appropriate clinical interventions, as immediate post-op care differs from care provided after the initial 24 hours.
2
Recall the primary mobility and anatomical complications associated with an above-the-knee amputation.
Hip flexion contractures are a major risk due to muscle imbalance and prolonged periods of sitting or limb elevation.
Contractures can severely impair the client's future ability to be fitted for and successfully use a prosthesis.
3
Evaluate each nursing intervention for its effect on hip alignment and safe care practices.
Prone positioning actively extends the hip joint. Elevation or high-Fowler's positioning flexes the hip joint. Delegation of an evaluation is an unsafe practice.
Interventions must promote joint extension to counteract the risk of contractures, and assessments must remain the responsibility of the registered nurse.

Key Concept

Prevention of flexion contractures following lower extremity amputation
Question 1020Question →

A client is prescribed a scheduled dose of intravenous (IV) phenytoin to manage seizure activity. The client currently has a continuous peripheral IV infusion of 5% dextrose in water (D5W) infusing. Which action must the nurse implement to administer this medication safely?

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Answer: Flush the intravenous line with 0.9% sodium chloride before and after the administration.

Answer

The correct action is to flush the intravenous line with 0.9% sodium chloride before and after administering the medication.
Phenytoin is highly incompatible with dextrose-containing solutions such as 5% dextrose in water (D5W). If mixed, the medication will quickly precipitate and form crystals. To safely administer the drug through the existing intravenous line, the nurse must clear the dextrose from the tubing by flushing it with a compatible solution—specifically 0.9% sodium chloride (normal saline)—both before and immediately after the medication push.

Step-by-Step Solution

1
Analyze the compatibility of the prescribed medication with the existing intravenous fluid.
Phenytoin is highly incompatible with dextrose-containing solutions like D5W.
Mixing these two substances causes the phenytoin to form solid precipitates (crystals) in the tubing, which can lead to catheter occlusion or an embolus.
2
Determine the appropriate compatible diluent or flush solution.
Normal saline (0.9% sodium chloride) is the standard and required compatible solution for phenytoin.
Phenytoin remains stable and soluble only in normal saline.
3
Formulate a safe administration sequence using the existing intravenous access.
The nurse must pause the D5W, flush the line with normal saline, administer the drug at the correct rate, and flush again with normal saline before resuming the D5W.
This creates a physical barrier of normal saline between the incompatible medication and the dextrose fluid.

Key Concept

Intravenous medication compatibility and safe administration principles.
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