Physiological Integrity

1960 soru

Soru 1381Soru →

A nurse is preparing to administer an intermittent bolus enteral feeding via a percutaneous endoscopic gastrostomy (PEG) tube to a client. In what order should the nurse perform the following actions? Arrange the steps in the correct sequence.

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Cevap

The correct sequence is: Elevate the head of the bed, measure the gastric residual volume, flush the tube with water, administer the enteral formula by gravity, and finally flush the tube again before clamping.
Safe administration of enteral feedings follows a strict chronological order that prioritizes airway protection first (elevating the head of the bed), followed by assessing tolerance (checking residual volume), ensuring tube patency (pre-flush), delivering nutrition safely (gravity feeding), and maintaining equipment integrity (post-flush and clamp).

Adım Adım Çözüm

1
Elevate the head of the bed to at least 30 to 45 degrees.
The client is placed in a safe, upright position.
Elevating the head of the bed is the most critical initial step to protect the airway and prevent aspiration of stomach contents into the lungs during the procedure.
2
Aspirate stomach contents to measure the gastric residual volume.
The amount of undigested formula in the stomach is quantified.
Measuring the residual volume assesses gastric emptying and tolerance of previous feedings, ensuring it is safe to administer the next bolus.
3
Flush the gastrostomy tube with 30 mL of water.
The tube is cleared of gastric contents.
Flushing verifies the patency of the tube and prevents occlusion before the thick enteral formula is introduced.
4
Allow the prescribed enteral formula to flow in by gravity.
The client receives the prescribed nutrition.
Administering the feeding by gravity simulates normal filling of the stomach, preventing nausea, cramping, and vomiting.
5
Flush the tube with 30 mL of water and clamp the device.
The tube is cleared of formula and safely secured.
A final flush removes residual formula that could curdle and occlude the tube over time, and clamping prevents leakage or air entry.

Anahtar Kavram

Enteral Nutrition Administration and Aspiration Prevention
Tahmini Süre:1m 30s
Soru 1382Soru →

Following a diagnostic lumbar puncture, a client is transferred back to the acute care unit. The client reports mild tenderness at the lower back puncture site but is currently alert with stable vital signs. Which of the following actions is the most appropriate for the registered nurse to implement?

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Cevap: Keep the client strictly in a flat, supine position for the prescribed duration.

Cevap

Keep the client strictly in a flat, supine position for the prescribed duration.
The correct action is to maintain the client in a flat, supine position for several hours following a lumbar puncture. This positioning helps prevent a post-dural puncture headache (often called a spinal headache) by reducing the hydrostatic pressure and preventing the rapid leakage of cerebrospinal fluid from the puncture site.

Adım Adım Çözüm

1
Identify the primary risks following a diagnostic lumbar puncture.
The most common and significant complications are cerebrospinal fluid (CSF) leakage and subsequent post-dural puncture headache (spinal headache).
Understanding the physiological risks allows the nurse to anticipate and implement necessary preventive measures.
2
Determine the optimal positioning to mitigate these risks.
A flat, supine position is required.
Laying flat minimizes hydrostatic pressure on the dural puncture site, reducing the likelihood of CSF leakage and helping to prevent spinal headaches.
3
Evaluate the remaining choices for safety and scope of practice.
Elevating the head or returning to the fetal position increases complication risks, while assigning an assessment to unlicensed personnel violates delegation rules.
Assessments cannot be delegated, and upright or flexed positions are contraindicated post-procedure.

Anahtar Kavram

Post-Lumbar Puncture Care and Positioning
Soru 1383Soru →

A client with mild cognitive impairment returned to the medical-surgical unit following a diagnostic lumbar puncture. The client is visibly restless, continuously attempts to sit up on the edge of the bed, and grasps at the bed linens. Which intervention is most appropriate to manage this client's care and comfort?

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Cevap: Maintain the client in a flat, supine position and provide a familiar sensory diversion object.

Cevap

Maintain the client in a flat, supine position and provide a familiar sensory diversion object.
Following a lumbar puncture, clients must remain flat and supine for several hours to prevent cerebrospinal fluid (CSF) leakage from the puncture site, which can cause a debilitating spinal headache. Because the client is restless and attempting to sit up, the nurse must intervene to maintain this required position. Providing a sensory diversion object is an effective, non-pharmacological comfort measure that keeps the client's hands occupied and safely redirects their attention without the need for physical restraints.

Adım Adım Çözüm

1
Identify the primary clinical constraints based on the recent procedure.
The client had a lumbar puncture, which strictly requires a flat, supine position for several hours to prevent cerebrospinal fluid leakage and spinal headaches.
Post-procedure positioning is critical to prevent severe neurological complications.
2
Evaluate the client's behavioral symptoms and safety needs.
The client is restless and attempting to sit up, posing a risk of violating the positioning constraint.
Cognitive impairment can make adherence to strict positioning difficult, requiring nursing intervention.
3
Select the most appropriate, least restrictive intervention.
Providing a sensory diversion object redirects the client's attention and hands, promoting comfort while maintaining the required flat position.
Least restrictive measures and non-pharmacological comfort techniques must be prioritized before considering restraints.

Anahtar Kavram

Post-Lumbar Puncture Positioning and Non-Pharmacological Comfort
Soru 1384Soru →

A nurse is preparing to administer a prescribed dose of intravenous (IV) ondansetron to a client who is recovering from a laparoscopic cholecystectomy and reporting nausea. The client has a peripheral saline lock in place on the right forearm. Arrange the following steps for administering the IV push medication in the correct sequence.

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Cevap

The correct sequence for administering an IV push medication via a saline lock is to clean the port, flush with saline to check patency, administer the medication, flush again with saline to clear the line, and finally clamp the tubing.
The standard evidence-based protocol for administering an IV push medication into a peripheral saline lock is often remembered by the acronym SAS: Saline, Administer, Saline. First, the nurse must always maintain asepsis by cleaning the access port. Second, a normal saline flush is used to assess the patency of the intravenous site and ensure the fluid flows easily without causing swelling or pain. Third, the medication is pushed over the recommended time. Fourth, a second normal saline flush is administered to push the remaining medication in the extension tubing into the client's bloodstream. Finally, the tubing is clamped to maintain positive pressure and prevent blood reflux, which could cause a clot and subsequent loss of the IV access.

Adım Adım Çözüm

1
Disinfect the injection port.
The port is aseptically prepared.
Reduces the risk of a peripheral line-associated bloodstream infection.
2
Flush the line with normal saline.
Line patency is verified.
Ensures the vein is viable and prevents extravasation or infiltration of the medication.
3
Administer the IV medication.
The therapeutic dose is delivered.
Treats the client's postoperative nausea safely.
4
Flush the line again with normal saline.
The tubing is cleared of medication.
Ensures the entire dose reaches the systemic circulation and prevents drug incompatibility if other medications are administered later.
5
Clamp the extension tubing.
The saline lock is secured.
Maintains positive pressure in the line to prevent blood from backing up and clotting inside the catheter.

Anahtar Kavram

Safe administration of intravenous push medications through a saline lock using the Saline-Administer-Saline (SAS) protocol.
Soru 1385Soru →

During morning rounds, the nurse notes that a client with severe malnutrition has total parenteral nutrition (TPN) infusing through a single-lumen peripherally inserted central catheter (PICC). A new prescription for intermittent intravenous (IV) ceftriaxone is ordered for a suspected infection. Which action is the most appropriate method to deliver the antibiotic?

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Cevap: Establish a new peripheral intravenous access site to administer the ceftriaxone.

Cevap

Establish a new peripheral intravenous access site to administer the ceftriaxone.
Total parenteral nutrition (TPN) contains complex mixtures of amino acids, dextrose, lipids, and electrolytes. Because of its high osmolarity and composition, it carries a significant risk of chemical incompatibility when mixed with other medications. Therefore, TPN must always be administered through a dedicated IV line or a dedicated lumen of a multi-lumen central catheter. Since the client only has a single-lumen PICC, the nurse must establish a separate peripheral IV site to safely give the antibiotic.

Adım Adım Çözüm

1
Identify the current IV setup and the new prescription.
The client has a single-lumen PICC dedicated to TPN, and needs a new IV antibiotic.
Understanding the existing access is required before safely giving new IV medications.
2
Recall the safety guidelines for TPN administration.
TPN must always run through a dedicated line or a dedicated lumen of a multi-lumen central catheter.
TPN solutions are highly complex, have a high osmolarity, and pose a high risk for infection and chemical incompatibility with other drugs.
3
Determine the safest method to administer the newly prescribed antibiotic.
Because the single-lumen PICC is currently dedicated to TPN, the nurse must start a new peripheral IV line.
This prevents mixing the antibiotic with TPN and avoids pausing the TPN, which could lead to hypoglycemia.

Anahtar Kavram

Total Parenteral Nutrition (TPN) requires a dedicated intravenous line to prevent severe drug incompatibility and infection.
Soru 1386Soru →

The nurse is preparing to safely transfer a client with right-sided hemiparesis from the bed to a wheelchair. In which order should the nurse perform the following actions? (Arrange the steps in the correct sequence from first to last.)

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Cevap

The correct sequence prioritizes safe environmental setup (placing the chair on the strong side and locking brakes), patient preparation (sitting the client up and applying the transfer belt), and safe physical execution (pivoting on the strong leg and reaching for armrests).
A safe transfer sequence must follow a logical progression that maximizes client safety, utilizes their functional abilities, and minimizes nursing injury. The environment must be prepared first by placing the wheelchair on the unaffected (left) side and locking all brakes. Once the environment is secure, the client is assisted to a seated position to stabilize hemodynamics before the transfer belt is applied. Finally, the physical transfer is executed by having the client bear weight on their strong leg, pivot, and secure themselves using the armrests before sitting.

Adım Adım Çözüm

1
Position the wheelchair on the unaffected side.
The wheelchair is placed on the client's left side at a 45-degree angle.
Transferring toward the strong side ensures the client can support their own weight during the pivot.
2
Secure the equipment.
The bed and wheelchair brakes are locked.
Locking all wheels is a mandatory safety measure to prevent the equipment from rolling away.
3
Mobilize the client to a seated position.
The client sits on the edge of the bed with feet flat on the floor.
Sitting and dangling allows the cardiovascular system to adapt, preventing dizziness upon standing.
4
Apply the transfer belt.
The transfer belt is fastened snugly around the client's waist.
Applying the belt while the client is seated upright ensures a proper fit and provides a safe point of contact for the nurse.
5
Execute the standing pivot.
The client bears weight on the left leg and pivots toward the chair.
The strong leg acts as the pivot point, compensating for the right-sided weakness.
6
Lower the client into the wheelchair.
The client reaches for the armrests and sits down securely.
Feeling the armrests behind them ensures spatial awareness and prevents the client from missing the seat.

Anahtar Kavram

Safe Client Transfer Techniques and Mobility Assistance
Soru 1387Soru →

A client who has difficulty swallowing is receiving a continuous enteral feeding via a nasogastric tube. Which actions are appropriate to include in the client's plan of care to maintain safety and comfort? (Select all that apply)

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Cevap: Keep the head of the bed elevated to at least a 30-degree angle.; Clean the oral cavity and teeth with a soft-bristled brush every four hours.; Inspect the skin around the nares for redness or tissue breakdown each shift.

Cevap

The correct actions include elevating the head of the bed to at least 30 degrees, providing frequent oral hygiene, and inspecting the nares for skin breakdown.
Clients receiving continuous enteral feedings are at high risk for aspiration. Keeping the head of the bed elevated to at least 30 degrees uses gravity to prevent the reflux of gastric contents. Frequent oral hygiene is necessary to keep mucous membranes moist, promote comfort, and prevent infection, as these clients often mouth-breathe and lack oral fluid intake. Routine inspection of the nares is essential to detect and prevent pressure injuries caused by the friction and continuous presence of the tube.

Adım Adım Çözüm

1
Analyze the physiological risks associated with continuous nasogastric enteral feeding.
The primary risks include pulmonary aspiration of formula, pressure injuries at the tube insertion site, and impaired oral mucous membranes due to lack of oral intake.
Understanding the baseline risks guides the selection of appropriate basic care and comfort interventions.
2
Evaluate each provided option against evidence-based nursing practices for enteral nutrition.
Elevating the head of the bed, performing routine oral care, and monitoring the nares are standard practices that mitigate the identified risks.
These interventions directly promote comfort and prevent life-threatening complications like aspiration pneumonia.
3
Identify the contraindicated or inappropriate actions among the options.
Laying the client flat during a feeding, delegating assessments to a technician, and using the air-injection method are all unsafe or incorrect practices.
Recognizing improper delegation, outdated assessment techniques, and dangerous positioning is crucial for safe client care.

Anahtar Kavram

Basic Care and Comfort during Enteral Nutrition
Soru 1388Soru →

An intensive care nurse is initiating a heparin protocol for a client weighing 80 kg80 \text{ kg} who was recently diagnosed with a pulmonary embolism. The medical prescription indicates a continuous intravenous infusion at 18 units/kg/hr18 \text{ units/kg/hr}. The pharmacy delivers a premixed bag labeled 'Heparin sodium 25,000 units25,000 \text{ units} in 500 mL500 \text{ mL} of 0.45% NaCl0.45\% \text{ NaCl}'. Based on these parameters, how many mL/hr\text{mL/hr} will the infusion pump be programmed to deliver? (Round the final answer to the nearest tenth.)

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Cevap: 28.828.8

Cevap

The infusion pump should be programmed to deliver 28.8 mL/hr28.8 \text{ mL/hr}.
The correct rate is 28.828.8 because the client requires 1440 units/hr1440 \text{ units/hr} (80 kg×18 units/kg/hr80 \text{ kg} \times 18 \text{ units/kg/hr}), and the available concentration is 50 units/mL50 \text{ units/mL} (25,000 units÷500 mL25,000 \text{ units} \div 500 \text{ mL}). Dividing the required dose by the available concentration (1440÷501440 \div 50) yields exactly 28.8 mL/hr28.8 \text{ mL/hr}.

Adım Adım Çözüm

1
Calculate the total hourly heparin dose required based on the client's weight.
80 kg×18 units/kg/hr=1440 units/hr80 \text{ kg} \times 18 \text{ units/kg/hr} = 1440 \text{ units/hr}
The prescription is weight-based, so the initial step is to determine the absolute number of units needed per hour.
2
Determine the concentration of the available heparin solution.
25,000 units÷500 mL=50 units/mL25,000 \text{ units} \div 500 \text{ mL} = 50 \text{ units/mL}
To calculate the volume to be infused, the amount of medication in each milliliter of the provided bag must be known.
3
Calculate the required infusion rate in mL/hr.
1440 units/hr÷50 units/mL=28.8 mL/hr1440 \text{ units/hr} \div 50 \text{ units/mL} = 28.8 \text{ mL/hr}
Dividing the desired hourly dose by the concentration yields the exact volume to administer per hour.

Anahtar Kavram

Weight-based continuous intravenous medication calculation
Soru 1389Soru →

An adult client who has severe osteoarthritis of the left knee is receiving education from the nurse on how to navigate a staircase at home using a standard single-point cane. Which statement by the client demonstrates a correct understanding of ascending the stairs?

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Cevap: I should step up with my right leg first, and then bring the cane and my left leg up to the step.

Cevap

The correct statement is that the client will step up with the right leg first, followed by the cane and the left leg.
When a client is using a cane to ascend a staircase, the mnemonic 'up with the good' applies. The client must step up with the strong or unaffected extremity (the right leg) first. The strong leg is capable of bearing the full body weight necessary to lift the person up to the next level. After the body is supported on the higher step, the cane and the affected extremity (the left leg) are brought up simultaneously. This technique maintains optimal balance and protects the arthritic knee from excessive strain.

Adım Adım Çözüm

1
Identify the client's affected and unaffected sides based on the clinical presentation.
The left knee has severe osteoarthritis (affected/weak side), making the right leg the unaffected/strong side.
Determining limb strength is essential for applying correct mobility principles with assistive devices.
2
Recall the physiological principles for safely navigating stairs with an assistive device.
The standard clinical rule is 'up with the good, down with the bad.' The strong leg must always lead when ascending to bear the workload of lifting the body against gravity.
Leading with the strong leg ensures safety, prevents falls, and avoids overloading the damaged joint.
3
Determine the proper sequence for advancing the cane.
The cane provides support for the weak leg, so it must always move concurrently with the affected leg.
Moving the cane alongside the weak leg widens the base of support exactly when the weak leg is in motion or bearing partial weight.
4
Combine the clinical rules to evaluate the client's statements.
The correct sequence for going up is: right leg (strong) steps up first, then the left leg (weak) and the cane follow together.
This confirms the statement describing the right leg moving first is the only correct understanding of the procedure.

Anahtar Kavram

Mobility Assistive Devices: Stair Navigation
Soru 1390Soru →

A nurse is preparing to administer an intermittent intravenous (IV) antibiotic via a secondary line (piggyback) to a client who is currently receiving a continuous primary IV fluid infusion. Arrange the following steps for setting up and initiating the secondary infusion in the correct chronological order.

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Cevap

The correct procedural sequence is: 1) Close the roller clamp on the secondary tubing, 2) Spike the secondary medication bag, 3) Prime the secondary tubing, 4) Scrub the uppermost Y-site port on the primary line, and 5) Attach the tubing and lower the primary fluid bag.
Safe initiation of an IV piggyback requires preparing the equipment before breaking into the patient's existing line. The nurse must first secure the clamp to prevent fluid loss, spike the bag, and prime the air from the line. Once the secondary set is fully prepared, the nurse cleanses the patient's primary line to maintain sterility, connects the secondary line, and manipulates the physical height of the bags to ensure the medication infuses correctly via gravity.

Adım Adım Çözüm

1
Close the roller clamp on the secondary tubing.
The tubing is occluded.
Prevents the premature loss of medication when the bag is punctured.
2
Spike the secondary medication bag.
The bag is connected to the administration set.
Establishes a closed pathway for the medication.
3
Prime the secondary tubing with the medication.
Air is removed from the tubing.
Prevents air embolisms from entering the client's vascular system.
4
Cleanse the primary line's uppermost Y-site port.
The access point is sterilized.
Maintains strict asepsis before breaching the primary closed IV system.
5
Connect the lines and lower the primary IV bag using a hanger.
The secondary system is fully integrated.
Lowering the primary bag utilizes gravity, ensuring the higher secondary bag infuses first.

Anahtar Kavram

Safe administration and procedural sequencing of secondary intravenous (IV piggyback) medications.
Soru 1391Soru →

A nurse is reviewing prescriptions for a client admitted with muscle weakness and a serum potassium level of 2.4 mEq/L. The healthcare provider has prescribed 40 mEq of intravenous potassium chloride (KCl) in 100 mL of 0.9% sodium chloride to be infused over 1 hour. The client currently has a 22-gauge peripheral intravenous (IV) catheter in the right forearm. Which action should the nurse take first?

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Cevap: Withhold the medication and contact the healthcare provider to clarify the unsafe infusion rate and route.

Cevap

Withhold the medication and contact the healthcare provider to clarify the unsafe infusion rate and route.
The correct action is to withhold the medication and contact the provider. Intravenous potassium chloride is a high-alert medication. The maximum safe infusion rate for a peripheral IV is typically 10 mEq/hr, and the maximum concentration is usually 10 mEq per 100 mL to prevent severe vein irritation and phlebitis. An infusion of 40 mEq over 1 hour via a peripheral line is highly dangerous and places the client at immediate risk for fatal cardiac arrhythmias and severe vascular damage.

Adım Adım Çözüm

1
Analyze the prescribed medication order against safe administration guidelines for intravenous potassium chloride.
The order is 40 mEq over 1 hour via a peripheral IV.
Intravenous potassium is a high-alert medication that can cause fatal arrhythmias if administered too rapidly.
2
Evaluate the prescribed route and concentration against maximum limits.
The concentration is 40 mEq in 100 mL, and the route is a 22-gauge peripheral line.
Peripheral administration of potassium should generally not exceed 10 mEq/hr, and concentrations higher than 10 mEq/100 mL can cause severe chemical phlebitis.
3
Determine the priority nursing intervention.
The nurse must refuse to administer the unsafe order and contact the provider for a safer prescription.
Patient safety and advocacy require the nurse to challenge unsafe prescriptions before harm occurs.

Anahtar Kavram

Safe Administration of Intravenous Potassium Chloride
Soru 1392Soru →

During morning rounds on the orthopedic unit, a clinical team coordinates the daily care for a client who is on their third day of recovery following a right total hip arthroplasty (posterior approach). Which intervention demonstrates correct adherence to post-operative safety and comfort guidelines?

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Cevap: Securing an abduction pillow between the client's lower extremities before turning them onto their left side for a back massage.

Cevap

The correct intervention is securing an abduction pillow between the client's lower extremities before turning them onto their left side.
Following a posterior approach total hip arthroplasty, the client is at high risk for hip dislocation if the operative leg crosses the midline (adduction) or flexes excessively. Securing an abduction pillow between the legs prevents adduction and maintains proper anatomical alignment while the client is turned to the unoperated side for basic care measures, such as receiving a back massage or having linens changed.

Adım Adım Çözüm

1
Identify the surgical procedure and its specific post-operative restrictions.
The client had a right total hip arthroplasty using a posterior approach, which requires strict avoidance of hip adduction, internal rotation, and hip flexion equal to or greater than 90 degrees.
Understanding surgical precautions is essential for preventing prosthetic dislocation during routine basic care.
2
Evaluate the safety of each positioning and delegation option against the identified restrictions.
A 90-degree bed angle risks excessive flexion; crossing ankles causes adduction; delegating a complex assessment to a UAP violates the nursing scope of practice.
All care team actions must adhere to both physiological safety limits and legal delegation boundaries.
3
Select the option that maintains proper anatomical alignment and safety.
Using an abduction pillow while turning the client safely prevents adduction and complies with positioning guidelines.
This is the only action that actively protects the integrity of the new hip joint while allowing for necessary hygiene and comfort care.

Anahtar Kavram

Post-Operative Positioning and Care for Total Hip Arthroplasty (Posterior Approach)
Soru 1393Soru →

A nurse in the emergency department is caring for a client who is experiencing continuous tonic-clonic seizures. The healthcare provider prescribes intravenous phenytoin. The client currently has an ongoing peripheral intravenous infusion of 5% dextrose in water (D5W). Which of the following is the most appropriate action by the nurse?

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Cevap: Stop the D5W infusion, flush the intravenous line with 0.9% sodium chloride, administer the phenytoin, and flush again with 0.9% sodium chloride.

Cevap

The nurse must stop the D5W infusion, flush the line with 0.9% sodium chloride, administer the phenytoin, and flush again with 0.9% sodium chloride.
Phenytoin is chemically incompatible with dextrose solutions and will form a precipitate if they mix. To safely administer intravenous phenytoin through an existing line that contains 5% dextrose in water (D5W), the nurse must first stop the D5W infusion, flush the intravenous line thoroughly with a compatible solution (0.9% sodium chloride), administer the phenytoin, and then flush the line again with 0.9% sodium chloride before resuming the dextrose infusion. This practice clears the tubing of incompatible fluids, ensuring safe medication delivery and preventing line occlusion or embolism.

Adım Adım Çözüm

1
Identify the primary medical emergency.
The client is experiencing continuous tonic-clonic seizures (status epilepticus).
Immediate pharmacological intervention is required to halt seizure activity and prevent brain damage.
2
Assess the prescribed medication and current intravenous access.
Intravenous phenytoin is prescribed, but the client is receiving a continuous infusion of 5% dextrose in water (D5W).
Medication compatibility must be verified before administration.
3
Determine compatibility and safe administration technique.
Phenytoin is chemically incompatible with dextrose and forms a precipitate.
To prevent precipitation, the dextrose infusion must be stopped, and the line must be flushed with 0.9% sodium chloride (a compatible solution) before and after the phenytoin administration.

Anahtar Kavram

Intravenous Phenytoin Administration and Fluid Compatibility
Soru 1394Soru →

A nurse is preparing to draw a blood specimen from a client's multi-lumen central venous catheter (CVC). A continuous intravenous infusion of 0.9% sodium chloride is currently running through a different lumen of the catheter. Arrange the following steps in the correct chronological order to obtain the blood sample safely and prevent laboratory result contamination.

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Cevap

The correct sequence is to first pause the active infusion, then scrub the hub, verify patency and discard the dead space fluid, draw the actual sample, and finally flush the line and restart the infusion.
The correct sequence ensures patient safety, prevents central line-associated bloodstream infections (CLABSI), and guarantees the integrity of the laboratory specimen. Pausing other infusions is the critical first step to prevent hemodilution. Aseptic technique (scrubbing the hub) must precede any line access. A discard sample is necessary to remove the fluid sitting in the catheter's dead space before obtaining the actual diagnostic sample. Finally, the line must be flushed to prevent clotting, and the paused infusion must be restarted.

Adım Adım Çözüm

1
Pause the continuous intravenous infusion on the other lumen for at least 1 to 2 minutes.
The flow of intravenous fluids into the central circulation is temporarily halted.
This prevents hemodilution and ensures the drawn blood sample is not contaminated by the infusing fluids.
2
Scrub the needleless connector of the designated sampling lumen with an antiseptic swab.
The entry point for the syringe is disinfected.
Strict asepsis prevents the introduction of pathogens into the client's central bloodstream, preventing infection.
3
Flush the sampling lumen to verify patency, then withdraw and discard 5 to 10 mL of blood.
The catheter is confirmed to be patent, and the dead space is cleared of residual fluids.
Discarding the initial blood volume ensures that the subsequent sample consists of pure circulating blood rather than flush solution or residual fluids.
4
Attach a new sterile syringe and withdraw the required volume of blood for the laboratory specimen.
An uncontaminated diagnostic sample is successfully collected.
Using a fresh syringe ensures the actual specimen is accurately obtained for laboratory analysis.
5
Flush the sampling lumen with 10 to 20 mL of 0.9% sodium chloride and restart the paused infusion.
The catheter lumen is cleared of residual blood, and the client's continuous therapy is resumed.
A thorough flush prevents fibrin buildup and catheter occlusion, while restarting the infusion ensures therapeutic continuity.

Anahtar Kavram

Central Venous Catheter (CVC) Blood Specimen Collection (Discard Method)
Soru 1395Soru →

A nurse is developing a plan of care for a client who recently sustained a severe traumatic brain injury and is at high risk for increased intracranial pressure (ICP). Which of the following basic care and comfort interventions should the nurse include? Select all that apply.

Geçerli olan tümünü seçin

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Cevap: Maintain the head of the bed elevated at 30 degrees.; Align the client's head and neck in a neutral, midline position.; Maintain a quiet, dimly lit environment to reduce sensory stimulation.

Cevap

The correct interventions are maintaining the head of the bed at 30 degrees, aligning the head and neck in a neutral position, and providing a quiet, dimly lit environment.
For a client at risk of increased intracranial pressure (ICP), basic care and comfort measures must focus on optimizing cerebral perfusion and minimizing metabolic demand. Maintaining the head of the bed at 30 degrees and keeping the head and neck in a neutral, midline position facilitates optimal venous drainage from the brain via the jugular veins. Providing a quiet, dimly lit environment reduces sensory stimulation, which helps decrease metabolic demand and prevents spikes in ICP.

Adım Adım Çözüm

1
Analyze the client's clinical condition and risk factors.
The client has a traumatic brain injury and is at high risk for increased intracranial pressure (ICP).
Identifying the primary physiological risk dictates which basic care and comfort interventions are safe to implement.
2
Evaluate mobility and positioning interventions for their effect on venous return.
Elevating the head of the bed to 30 degrees and keeping the neck neutral promotes jugular venous drainage. Flexing the hips to 90 degrees is contraindicated.
Proper positioning is a critical basic care measure to prevent spikes in ICP; extreme hip flexion increases intra-abdominal pressure, which indirectly raises ICP.
3
Review comfort and safety interventions against nursing scope of practice and safety protocols.
A quiet environment safely promotes comfort. However, delegating a swallowing evaluation to a UAP is unsafe, and applying restraints without trying alternatives violates safety protocols.
Basic care measures must align with legal delegation standards and the principle of using the least restrictive safety measures.

Anahtar Kavram

Basic care and comfort for clients with or at risk for increased intracranial pressure must prioritize interventions that promote cerebral venous drainage (e.g., proper positioning) and reduce metabolic demand (e.g., controlling sensory stimuli), while avoiding actions that increase intra-abdominal or intrathoracic pressure.
Soru 1396Soru →

A critical care nurse is preparing to initiate a continuous IV infusion of dobutamine for a client with severe heart failure. The healthcare provider has prescribed dobutamine at 5 mcg/kg/min5 \text{ mcg/kg/min}. The client weighs 198 lb198 \text{ lb}. The medication is supplied as dobutamine 500 mg500 \text{ mg} in 250 mL250 \text{ mL} of 5% dextrose in water (D5W). At what rate, in mL/hr\text{mL/hr}, should the nurse set the IV infusion pump? (Record your answer using one decimal place.)

Cevabı ve açıklamayı göster

Cevap: 13.5

Cevap

13.5
To determine the correct IV pump rate, first convert the weight to kilograms (198 lb÷2.2=90 kg198 \text{ lb} \div 2.2 = 90 \text{ kg}). Then, calculate the total dose in mcg/min (5 mcg/kg/min×90 kg=450 mcg/min5 \text{ mcg/kg/min} \times 90 \text{ kg} = 450 \text{ mcg/min}). Next, convert to an hourly dose (450 mcg/min×60 min/hr=27,000 mcg/hr450 \text{ mcg/min} \times 60 \text{ min/hr} = 27,000 \text{ mcg/hr}), and then to milligrams (27,000 mcg÷1,000=27 mg/hr27,000 \text{ mcg} \div 1,000 = 27 \text{ mg/hr}). Finally, divide the hourly dose by the concentration of the IV bag (500 mg÷250 mL=2 mg/mL500 \text{ mg} \div 250 \text{ mL} = 2 \text{ mg/mL}) to find the rate in mL/hr: 27 mg/hr÷2 mg/mL=13.5 mL/hr27 \text{ mg/hr} \div 2 \text{ mg/mL} = 13.5 \text{ mL/hr}.

Adım Adım Çözüm

1
Convert the client's weight from pounds (lb) to kilograms (kg).
198 lb÷2.2 lb/kg=90 kg198 \text{ lb} \div 2.2 \text{ lb/kg} = 90 \text{ kg}
The prescribed dose is weight-based in kilograms, so the client's weight must first be converted into the correct unit.
2
Calculate the total required dose per minute.
5 mcg/kg/min×90 kg=450 mcg/min5 \text{ mcg/kg/min} \times 90 \text{ kg} = 450 \text{ mcg/min}
Multiplying the prescribed weight-based dose by the client's weight determines the exact dose the client needs each minute.
3
Convert the per-minute dose to an hourly dose.
450 mcg/min×60 min/hr=27,000 mcg/hr450 \text{ mcg/min} \times 60 \text{ min/hr} = 27,000 \text{ mcg/hr}
IV infusion pumps are set in milliliters per hour (mL/hr), so the required medication dose must be calculated on an hourly basis.
4
Convert the hourly dose from micrograms (mcg) to milligrams (mg).
27,000 mcg/hr÷1,000 mcg/mg=27 mg/hr27,000 \text{ mcg/hr} \div 1,000 \text{ mcg/mg} = 27 \text{ mg/hr}
The supplied medication concentration is provided in milligrams, so the requested dose must be converted to match the supplied unit.
5
Calculate the required volume to infuse per hour.
27 mg/hr÷(500 mg/250 mL)=27 mg/hr÷2 mg/mL=13.5 mL/hr27 \text{ mg/hr} \div (500 \text{ mg} / 250 \text{ mL}) = 27 \text{ mg/hr} \div 2 \text{ mg/mL} = 13.5 \text{ mL/hr}
Dividing the desired hourly dose by the medication concentration determines the final infusion pump rate in mL/hr.

Anahtar Kavram

Weight-Based Intravenous Medication Dosage Calculation
Soru 1397Soru →

A 68-year-old client is 24 hours post-operative following an open cholecystectomy. The client has been guarding the abdomen and is reluctant to use the incentive spirometer due to incisional pain. The nurse notes shallow respirations at 2626 breaths/min and an oxygen saturation (SpO2SpO_2) of 89%89\% on room air. A newly drawn arterial blood gas (ABG) reveals the following: pH 7.297.29, PaCO2PaCO_2 5656 mmHg, HCO3−HCO_3^- 2424 mEq/L, and PaO2PaO_2 6262 mmHg. Which immediate action should the nurse implement to reduce the risk of further physiological deterioration?

Cevabı ve açıklamayı göster

Cevap: Elevate the head of the bed to at least 45 degrees and guide the client through deep breathing exercises.

Cevap

The correct action is to elevate the head of the bed to at least 45 degrees (semi-Fowler's position) and assist the client with deep breathing exercises.
The client is experiencing uncompensated respiratory acidosis (pH 7.297.29, PaCO2PaCO_2 5656 mmHg) and hypoxemia due to shallow breathing (hypoventilation) from post-operative incisional splinting. Elevating the head of the bed promotes optimal lung expansion by allowing the diaphragm to drop, which improves ventilation and gas exchange. Deep breathing exercises directly address the root cause by increasing alveolar ventilation and blowing off the retained carbon dioxide.

Adım Adım Çözüm

1
Analyze the client's clinical presentation and arterial blood gas (ABG) values.
The ABG indicates uncompensated respiratory acidosis (low pH, high PaCO2PaCO_2, normal HCO3−HCO_3^-) accompanied by hypoxemia (low PaO2PaO_2 and SpO2SpO_2).
Identifying the specific physiological derangement is the critical first step in prioritizing appropriate nursing care.
2
Determine the root cause of the acid-base imbalance.
The respiratory acidosis is caused by hypoventilation (shallow breathing at 26 breaths/min) secondary to incisional splinting and guarding from the open abdominal surgery.
Interventions must target the underlying cause to effectively reverse the client's physiological decline.
3
Select the safest and most direct nursing intervention to resolve the hypoventilation.
Elevating the head of the bed maximizes diaphragmatic excursion, while deep breathing exercises directly increase alveolar ventilation.
Non-pharmacological positioning and respiratory exercises are the immediate priority to restore adequate gas exchange without risking further central nervous system depression.

Anahtar Kavram

Recognition and immediate non-pharmacological management of post-operative respiratory acidosis.
Soru 1398Soru →

During morning rounds, a nurse notes that a client has an active peripheral venous catheter infusing lactated Ringer's solution at 100 mL/hr100\text{ mL/hr}. The pharmacy has just delivered a newly prescribed dose of intravenous ceftriaxone. Which action represents the most critical safety step the nurse must perform prior to connecting the medication?

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Cevap: Verify the compatibility of the antibiotic and the lactated Ringer's solution using a standard drug reference.

Cevap

The nurse must verify the compatibility of the antibiotic and the lactated Ringer's solution using a standard drug reference.
The correct action ensures patient safety by preventing a potentially fatal chemical reaction. Ceftriaxone can bind with the calcium present in lactated Ringer's solution to form solid particulate matter (precipitate) in the IV line or bloodstream. Therefore, verifying compatibility is an absolute priority before mixing any IV medications or fluids.

Adım Adım Çözüm

1
Identify the planned clinical intervention.
The nurse is preparing to administer a secondary intravenous medication into a primary line that is actively infusing a different solution.
Recognizing multiple intravenous substances will mix in the tubing is the first step in medication safety.
2
Recall the fundamental safety principles of parenteral therapies.
When two different intravenous solutions or medications meet, there is a high risk for physical or chemical incompatibility.
Preventing adverse reactions, such as the formation of micro-crystals or precipitate, protects the client from emboli and vein irritation.
3
Determine the priority nursing action based on these principles.
The nurse must consult a drug reference guide to ensure ceftriaxone and lactated Ringer's solution can safely mix.
Compatibility verification must always occur before connecting and infusing a new medication.

Anahtar Kavram

Intravenous Compatibility and Medication Safety
Soru 1399Soru →

A client is admitted to the emergency department in status epilepticus. The healthcare provider prescribes a loading dose of phenytoin 1,000 mg intravenously STAT. The client has a single 20-gauge peripheral intravenous (IV) catheter, which is currently infusing a primary solution of 5% Dextrose in Water (D5W) at 100 mL/hr. Which sequence of actions by the nurse demonstrates safe administration of this medication?

Cevabı ve açıklamayı göster

Cevap: Pause the primary D5W infusion, flush the IV catheter with 0.9% sodium chloride, and administer the medication using an infusion pump over 20 minutes.

Cevap

The correct action is to pause the primary D5W infusion, thoroughly flush the intravenous catheter with 0.9% sodium chloride, and administer the phenytoin over at least 20 minutes.
Phenytoin is chemically incompatible with all dextrose-containing solutions and will immediately form a solid crystal precipitate if mixed. The nurse must pause the D5W and thoroughly flush the line with 0.9% sodium chloride (normal saline) before and after administration. Additionally, intravenous phenytoin carries a critical warning for severe hypotension and cardiac arrhythmias if administered too rapidly. The absolute maximum safe infusion rate is 50 mg/min. For a 1,000 mg loading dose, the minimum administration time must be calculated: 1,000 mg ÷ 50 mg/min = 20 minutes. The use of an electronic infusion pump ensures this safe rate is strictly maintained.

Adım Adım Çözüm

1
Identify the chemical compatibility between the prescribed medication (phenytoin) and the infusing primary fluid (D5W).
Phenytoin is highly alkaline and completely incompatible with dextrose. It will instantly precipitate.
To determine if the medication can be administered concurrently or if the line must be cleared with a compatible solution.
2
Determine the appropriate diluent or flush solution required to safely administer phenytoin.
0.9% sodium chloride (normal saline) is the only compatible crystalloid solution for phenytoin administration.
To clear the IV catheter of any dextrose and provide a safe, compatible medium for the anticonvulsant.
3
Calculate the minimum safe administration time based on the maximum allowable intravenous infusion rate for phenytoin.
Maximum rate is 50 mg/min. For a 1,000 mg dose: 1,000 mg ÷ 50 mg/min = 20 minutes.
Intravenous phenytoin carries a black box warning for severe hypotension and life-threatening cardiac arrhythmias if infused too rapidly.
4
Select the option that correctly combines flushing the incompatible D5W with normal saline and administering the medication over the required minimum time.
The option stating to pause D5W, flush with normal saline, and infuse over 20 minutes is the only safe clinical action.
It successfully prevents chemical precipitation and avoids life-threatening rate-related cardiovascular adverse effects.

Anahtar Kavram

Safe parenteral administration of phenytoin requires avoiding all dextrose-containing solutions due to chemical precipitation, and strictly limiting the intravenous infusion rate to a maximum of 50 mg/min to prevent cardiovascular toxicity.
Soru 1400Soru →

A nurse is planning care for a client who sustained deep partial-thickness burns to the anterior neck, bilateral axillae, and chest 24 hours ago. The client is experiencing severe discomfort and persistently requests to rest in a curled, fetal position with multiple pillows placed under the head and knees. Which nursing action is the most appropriate to ensure physiological integrity while managing the client's basic care?

Cevabı ve açıklamayı göster

Cevap: Omit pillows under the head, place a rolled towel beneath the shoulders to extend the neck, and support the arms in 90-degree abduction.

Cevap

Omit pillows under the head, place a rolled towel beneath the shoulders to extend the neck, and support the arms in 90-degree abduction.
In burn management, the position of comfort is highly destructive because it is often the position of contracture. For burns involving the anterior neck and axillae, the nurse must actively prevent flexion and tissue webbing. Removing the head pillow and placing a rolled towel beneath the shoulders hyperextends the neck, preventing severe chin-to-chest contractures. Abducting the arms to 90 degrees prevents the axillary tissue from webbing. While this positioning may cause temporary discomfort, it is a critical, standard basic care intervention required to preserve joint function and mobility.

Adım Adım Çözüm

1
Analyze the locations of the deep partial-thickness burns.
The injuries are located on the anterior neck, bilateral axillae, and chest.
Burn wounds naturally contract as they heal, pulling surrounding healthy tissue inward toward the center of the wound.
2
Evaluate the client's requested fetal position.
The requested position promotes flexion of the neck, hips, and knees.
In burn care management, a 'position of comfort' usually equates to a 'position of contracture', which must be avoided.
3
Determine the appropriate therapeutic positioning to counteract contractures.
The neck must be maintained in extension and the arms must be abducted.
Therapeutic positioning actively opposes the physiological direction of potential contractures, which is critical for preserving long-term functional mobility.

Anahtar Kavram

Therapeutic Positioning for Burn Clients (Anti-Contracture)
ÖncekiSayfa 70 / 98Sonraki
Physiological Integrity Alıştırma Soruları — NCLEX-RN — Sayfa 70 | Examkin