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Zorluk: KolayPhysiological Adaptation

While monitoring an older adult client who had a bowel resection earlier today, the practical nurse (PN) reviews the most recent vital signs and clinical data. The client is at increased risk for hypovolemic shock due to surgical blood loss. Which assessment finding should the PN identify as the body's earliest physiological adaptation to fluid volume deficit?

  1. A resting heart rate that increases from 76 to 114 beats per minuteCevap
  2. B
    A sudden, profound drop in blood pressure to 80/52 mm Hg
  3. C
    An increase in client reports of severe, sharp incisional pain
  4. D
    New onset of mild confusion that is considered normal for advanced age

Cevap

The correct answer is a resting heart rate that increases from 76 to 114 beats per minute.
As blood volume decreases, the body's earliest physiological adaptation is to stimulate the sympathetic nervous system. This causes an increase in the heart rate (tachycardia) in an attempt to maintain cardiac output and ensure adequate oxygen delivery to vital organs. Recognizing this early sign allows the nurse to intervene promptly before irreversible shock occurs.

Adım Adım Çözüm

1
Identify the client's primary physiological risk.
The client had major surgery and is at risk for hypovolemic shock.
Surgical procedures often involve significant blood loss, which can lead to a decreased intravascular volume.
2
Recall the body's initial compensatory response to fluid volume deficit.
The body attempts to compensate for lost fluid volume by stimulating the sympathetic nervous system, increasing the heart rate.
This sympathetic nervous system response helps maintain cardiac output before the blood pressure begins to fall.
3
Evaluate the provided assessment findings to identify the early sign.
An increasing heart rate is an early compensatory sign, whereas a drastic drop in blood pressure is a late sign.
Selecting the early sign ensures timely recognition of shock before tissue damage occurs.

Anahtar Kavram

Early physiological adaptation to hypovolemia involves a compensatory increase in heart rate (tachycardia) to maintain cardiac output and tissue perfusion.
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Physiological Adaptation

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