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Zorluk: OrtaPhysiological Adaptation

A client who underwent a total colectomy with a newly placed ileostomy three days ago has had 1,800 mL of liquid stool output over the past 8 hours. The client reports dizziness upon sitting up and severe muscle cramps. Assessment reveals a heart rate of 122 bpm, a supine blood pressure of 86/54 mm Hg, and a respiratory rate of 24 breaths/minute. An arterial blood gas (ABG) analysis shows a pH of 7.22, PaCO2 of 38 mm Hg, and HCO3 of 15 mEq/L. Which conclusion by the nurse represents the most accurate interpretation of this client's physiological status?

  1. The client is experiencing hypovolemia and uncompensated metabolic acidosis secondary to profound loss of intestinal bicarbonate.Cevap
  2. B
    The client is exhibiting signs of uncompensated respiratory acidosis caused by inadequate ventilation from abdominal surgical pain.
  3. C
    The client is demonstrating early indications of distributive shock, characterized by pathological vasodilation and increased vascular capacity.
  4. D
    The client's clinical presentation reflects expected postoperative physiological adaptation, and the priority is to encourage early ambulation.

Cevap

The client is experiencing hypovolemia and uncompensated metabolic acidosis secondary to profound loss of intestinal bicarbonate.
The client's presentation is a direct result of excessive fluid and electrolyte loss from the newly placed ileostomy. Lower gastrointestinal secretions are alkaline and rich in bicarbonate. Losing 1,800 mL of this fluid rapidly depletes the body's bicarbonate reserves, leading to metabolic acidosis. The ABG confirms uncompensated metabolic acidosis because the pH is low (7.22), the HCO3 is low (15 mEq/L), and the PaCO2 remains in the normal range (38 mm Hg). Additionally, the significant fluid loss has caused a severe circulating volume deficit, evidenced by the severe hypotension (86/54 mm Hg) and compensatory tachycardia (122 bpm).

Adım Adım Çözüm

1
Analyze the client's fluid balance using intake/output and vital signs.
Output of 1,800 mL in 8 hours combined with significant tachycardia and hypotension indicates a severe fluid volume deficit (hypovolemia).
Establishing the hemodynamic status is necessary to identify the primary physiological disruption.
2
Interpret the arterial blood gas (ABG) values.
A pH of 7.22 indicates acidemia. A normal PaCO2 (38 mm Hg) paired with a low HCO3 (15 mEq/L) confirms uncompensated metabolic acidosis.
Accurate ABG interpretation identifies the specific acid-base imbalance occurring as a complication.
3
Correlate the pathophysiology of the surgical procedure with the assessment data.
The ileostomy output is rich in water, sodium, and bicarbonate. Massive loss of this specific fluid directly causes both the circulating fluid volume deficit and the metabolic acidosis.
Connecting the clinical findings to the underlying cause ensures accurate clinical judgment and future intervention.

Anahtar Kavram

Pathophysiology of Ileostomy Fluid Loss: Hypovolemia and Metabolic Acidosis
Tahmini Süre:1m 30s
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Konular

Physiological Adaptation

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