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Difficulty: HardPhysiological Adaptation

A nurse is assessing a client who is 12 hours postoperative following an open laparotomy for a ruptured spleen. Which of the following assessment findings are indicative of early compensatory hypovolemic shock? Select all that apply.

  1. Restlessness and unexplained apprehensionAnswer
  2. Narrowing of the pulse pressureAnswer
  3. Arterial blood gas indicating uncompensated respiratory alkalosisAnswer
  4. D
    Profound hypotension with a systolic blood pressure below 80 mmHg
  5. E
    Decreased respiratory rate leading to respiratory acidosis

Answer

The correct findings that indicate early compensatory hypovolemic shock are restlessness and unexplained apprehension, narrowing of the pulse pressure, and an arterial blood gas indicating uncompensated respiratory alkalosis.
In the early compensatory stage of hypovolemic shock, sympathetic nervous system activation causes peripheral vasoconstriction, which elevates the diastolic blood pressure and results in a narrowing pulse pressure. Mild cerebral hypoxia and sympathetic stimulation manifest early as restlessness and unexplained apprehension. Furthermore, the body compensates for decreased tissue perfusion by increasing the respiratory rate (tachypnea), which excessively eliminates carbon dioxide and results in uncompensated respiratory alkalosis on an arterial blood gas.

Step-by-Step Solution

1
Analyze the clinical scenario and the client's risk factors.
The client is 12 hours postoperative from a ruptured spleen, placing them at high risk for hemorrhage and hypovolemic shock.
Identifying the primary risk guides the nurse to anticipate specific pathophysiological changes.
2
Recall the physiological mechanisms of the early compensatory stage of shock.
The body activates the sympathetic nervous system, releasing epinephrine and norepinephrine to maintain cardiac output and oxygen delivery.
Understanding the sympathetic response explains the vital sign and neurological changes seen early in shock.
3
Evaluate the options against early compensatory mechanisms.
Restlessness occurs due to early cerebral hypoxia. Vasoconstriction increases diastolic pressure, causing a narrowed pulse pressure. Tachypnea occurs to increase oxygenation, leading to respiratory alkalosis.
Differentiating early compensatory signs from late progressive signs is crucial for timely intervention.
4
Identify and eliminate late or incorrect manifestations of shock.
Profound hypotension is a late sign (progressive stage) indicating compensatory failure. A decreased respiratory rate (causing respiratory acidosis) is also a late sign indicating respiratory muscle fatigue or central nervous system depression.
Eliminating distractors ensures only the early indicators are selected.

Key Concept

Early Compensatory Hypovolemic Shock
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Topics

Physiological Adaptation

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