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Question

Difficulty: EasyPhysiological Adaptation

A nurse is assessing a postoperative client who is at risk for internal hemorrhage. Which of the following clinical findings should the nurse identify as the earliest indicator of developing hypovolemic shock?

  1. Unexplained restlessness and an increasing heart rateAnswer
  2. B
    A significant decrease in systolic blood pressure
  3. C
    Urine output dropping to less than 30 mL per hour
  4. D
    Development of slow, shallow respirations

Answer

The earliest indicator of developing hypovolemic shock is unexplained restlessness and an increasing heart rate.
The correct answer identifies that sympathetic nervous system activation in early shock causes an increased heart rate (tachycardia) and changes in mental status, such as restlessness or mild anxiety. These are the body's initial compensatory mechanisms responding to decreased circulating volume before the blood pressure ultimately drops.

Step-by-Step Solution

1
Analyze the client's risk factors and potential complications based on the clinical scenario.
The postoperative client is at risk for internal hemorrhage, which can rapidly lead to hypovolemic shock.
Identifying the primary risk guides the nurse's assessment priorities and helps anticipate expected physiological changes.
2
Recall the physiological sequence of the body's compensatory mechanisms during hypovolemic shock.
The body first compensates by activating the sympathetic nervous system, increasing heart rate and causing subtle mental status changes, before blood pressure drops.
Understanding the timeline of physiological compensation is required to differentiate early indicators from late, decompensatory signs.
3
Evaluate each option against the known early signs of shock.
Restlessness and tachycardia occur early; hypotension and oliguria occur later as compensation fails; and respirations typically increase, not decrease.
This allows the selection of the correct option that specifically matches the 'earliest indicator' requirement in the stem.

Key Concept

Early compensatory mechanisms in hypovolemic shock include tachycardia and altered mental status (such as restlessness or anxiety), whereas hypotension is a late sign indicating compensatory failure.
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Topics

Physiological Adaptation

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