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Zorluk: OrtaPhysiological Adaptation

A nurse is assessing a client who was admitted to the medical-surgical unit with severe hematemesis and melena. The nurse suspects the client is entering the early compensatory stage of hypovolemic shock. Which of the following assessment findings support this conclusion? Select all that apply.

  1. Restlessness and mild apprehensionCevap
  2. Heart rate of 118 beats/minCevap
  3. Pulse pressure decreasing from 45 mm Hg to 25 mm HgCevap
  4. D
    Systolic blood pressure dropping from 128 mm Hg to 86 mm Hg
  5. E
    Arterial blood gas revealing a PaCO2 of 48 mm Hg

Cevap

The assessment findings that support the early compensatory stage of hypovolemic shock are restlessness and mild apprehension, a heart rate of 118 beats/min, and a pulse pressure decreasing from 45 mm Hg to 25 mm Hg.
In the early compensatory stage of hypovolemic shock, the body's baroreceptors detect a drop in intravascular volume and stimulate the sympathetic nervous system. This results in an increased heart rate (tachycardia) to maintain cardiac output, and peripheral vasoconstriction which raises diastolic blood pressure, leading to a narrowed pulse pressure. Additionally, subtle decreases in cerebral perfusion cause early neurological changes such as restlessness, anxiety, and mild apprehension.

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1
Analyze the client's clinical presentation and the specific stage of shock being assessed.
The client has severe gastrointestinal bleeding, placing them at risk for hypovolemic shock. The question specifically asks for signs of the 'early compensatory stage'.
Different stages of shock present with distinct physiological markers based on the body's compensatory mechanisms.
2
Evaluate the options for early compensatory mechanisms.
The sympathetic nervous system activates to maintain perfusion, leading to tachycardia, peripheral vasoconstriction (narrowing pulse pressure), and early neurological changes (restlessness) due to subtle cerebral hypoxia.
These are the body's first attempts to preserve cardiac output and blood pressure before decompensation occurs.
3
Identify findings that represent later stages or incorrect physiological interpretations.
Profound hypotension is a sign of progressive shock (failed compensation). A high PaCO2 is incorrect because early shock causes hyperventilation and respiratory alkalosis (low PaCO2).
Distinguishing between compensatory and progressive shock is critical for timely nursing intervention.

Anahtar Kavram

During the early compensatory stage of shock, the sympathetic nervous system activates to maintain cardiac output and blood pressure. Key indicators include tachycardia, narrowing pulse pressure, restlessness, and respiratory alkalosis, whereas profound hypotension occurs in later, progressive stages.
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