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Difficulty: EasyPhysiological Adaptation

A practical nurse (PN) is collecting data on an adult client who is receiving continuous intravenous (IV) fluid therapy. Which of the following findings should the PN identify as physiological signs of fluid volume excess (hypervolemia)? Select all that apply.

  1. Jugular vein distentionAnswer
  2. Bounding peripheral pulsesAnswer
  3. Bilateral crackles in the lung basesAnswer
  4. D
    Urine specific gravity of 1.032
  5. E
    Postural hypotension
  6. F
    Flat neck veins when supine

Answer

The correct physiological signs of fluid volume excess are jugular vein distention, bounding peripheral pulses, and bilateral crackles in the lung bases.
Fluid volume excess (hypervolemia) occurs when there is an abnormal retention of water and sodium in the extracellular fluid compartment. This increased volume directly raises hydrostatic pressure in the blood vessels, leading to bounding peripheral pulses and distended jugular veins. As pressure builds in the pulmonary circulation, fluid is forced into the alveoli, resulting in respiratory manifestations such as shortness of breath and bilateral crackles upon auscultation.

Step-by-Step Solution

1
Analyze the client's clinical situation.
The client is receiving continuous IV fluid therapy, placing them at risk for receiving too much fluid, leading to fluid volume excess (hypervolemia).
Identifying the primary risk factor helps anticipate the specific physiological changes associated with that condition.
2
Recall the systemic effects of fluid volume excess.
Excess intravascular fluid increases blood pressure, engorges veins, and can lead to fluid shifting into the lungs (pulmonary edema).
Understanding the pathophysiology of fluid overload is necessary to correctly identify the associated clinical signs.
3
Evaluate each finding to determine if it indicates fluid excess or deficit.
Jugular vein distention, bounding pulses, and lung crackles indicate excess. A high urine specific gravity, postural hypotension, and flat neck veins indicate deficit.
Differentiating between signs of excess and deficit ensures accurate data collection and reporting.

Key Concept

Recognition of fluid volume excess (hypervolemia) involves identifying signs of increased intravascular volume and pulmonary congestion.
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Topics

Physiological Adaptation

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