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Zorluk: KolayPhysiological Adaptation

A nurse is performing a postoperative assessment on a client who underwent a laparotomy a few hours ago. To monitor for the onset of hypovolemic shock from potential internal bleeding, which of the following clinical findings should the nurse identify as the earliest indicator?

  1. Resting heart rate of 116 beats/minCevap
  2. B
    Blood pressure of 86/52 mm Hg
  3. C
    New-onset lethargy and confusion
  4. D
    Cold, pale, and diaphoretic skin

Cevap

A resting heart rate of 116 beats/min is the correct answer, as tachycardia is the earliest measurable sign of hypovolemia.
Tachycardia is typically the earliest measurable clinical sign of hypovolemic shock. As circulating blood volume decreases, the sympathetic nervous system is stimulated to increase the heart rate in order to maintain adequate cardiac output and tissue perfusion. This occurs before other classic signs appear.

Adım Adım Çözüm

1
Identify the primary clinical risk for the client.
The postoperative client is at risk for hypovolemic shock due to potential internal hemorrhage.
Recognizing the risk helps in anticipating the body's physiological responses to blood loss.
2
Recall the body's initial compensatory mechanisms for fluid volume deficit.
The sympathetic nervous system activates immediately to maintain cardiac output and tissue perfusion.
Cardiac output is the product of stroke volume and heart rate; as stroke volume drops from blood loss, heart rate must increase.
3
Evaluate the assessment findings to determine which occurs first.
An elevated heart rate (tachycardia) occurs before blood pressure drops or organ perfusion becomes noticeably compromised.
Compensatory tachycardia successfully maintains blood pressure initially. Hypotension and altered mental status only occur once these compensatory mechanisms fail.

Anahtar Kavram

Early physiological indicators of hypovolemic shock
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Konular

Physiological Adaptation

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