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Zorluk: ZorPreoperative and Postoperative Care

A 48-year-old woman is assessed in the intensive care unit due to persistent hypotension. Five hours ago, she underwent an uncomplicated laparoscopic cholecystectomy for symptomatic cholelithiasis. Her medical history includes severe rheumatoid arthritis, for which she has taken daily oral prednisone for the past three years. She reports that she abruptly stopped all her medications five days before the procedure to "clear her system for anesthesia."

Upon admission to the unit, her blood pressure was 82/44 mmHg and her pulse was 118/min. She was administered 3 L of intravenous normal saline, but her repeat blood pressure remains 78/42 mmHg. Current temperature is 38.1°C (100.6°F), pulse is 124/min, and respirations are 20/min. Physical examination shows a lethargic patient who arouses to voice. The abdomen is soft and mildly tender at the surgical port sites, with no guarding or rigidity.

Laboratory studies show:
- Sodium: 130 mEq/L
- Potassium: 4.1 mEq/L
- Chloride: 97 mEq/L
- Bicarbonate: 22 mEq/L
- Blood urea nitrogen: 18 mg/dL
- Serum creatinine: 0.9 mg/dL
- Glucose: 58 mg/dL
- Leukocyte count: 10,500/mm³

Which of the following is the most appropriate next step in management?

  1. Administration of intravenous hydrocortisoneCevap
  2. B
    Initiation of a continuous norepinephrine infusion
  3. C
    Administration of empiric broad-spectrum antibiotics
  4. D
    Computed tomography of the abdomen and pelvis
  5. E
    Return to the operating room for exploratory laparoscopy

Cevap

The correct answer is the administration of intravenous hydrocortisone.
This patient is experiencing an acute adrenal crisis triggered by the stress of surgery in the setting of abrupt cessation of chronic exogenous glucocorticoids. Chronic prednisone therapy suppresses the hypothalamic-pituitary-adrenal (HPA) axis. When these medications are stopped suddenly, the adrenal glands cannot produce sufficient cortisol to meet the increased physiological demands of surgical stress. This lack of cortisol leads to fluid-refractory hypotension (as cortisol provides a necessary permissive effect on vascular smooth muscle responsiveness to catecholamines), hypoglycemia (due to decreased gluconeogenesis), and hyponatremia (due to unsuppressed antidiuretic hormone secretion). Potassium levels typically remain normal in secondary adrenal insufficiency because aldosterone production is governed primarily by the renin-angiotensin-aldosterone system, not ACTH. The immediate and life-saving next step is the administration of high-dose intravenous glucocorticoids, such as hydrocortisone or dexamethasone, alongside aggressive fluid resuscitation.

Adım Adım Çözüm

1
Analyze the patient's history and vital signs.
The patient has fluid-refractory hypotension, tachycardia, and a mild fever hours after surgery, in the context of abruptly stopping chronic prednisone therapy.
Identifying the clinical syndrome of shock and its potential triggers is the first step in management.
2
Evaluate the laboratory findings.
Labs reveal hypoglycemia and mild hyponatremia, with a normal potassium level.
These metabolic derangements strongly suggest secondary acute adrenal insufficiency, as aldosterone (and thus potassium regulation) remains intact.
3
Determine the most appropriate immediate intervention.
Administer intravenous hydrocortisone.
Immediate glucocorticoid replacement is required to restore vascular tone and correct the life-threatening metabolic abnormalities of an adrenal crisis.

Anahtar Kavram

Patients who abruptly stop chronic exogenous glucocorticoids are at high risk for acute adrenal crisis during stressful events like surgery, presenting with fluid-refractory shock, hypoglycemia, and hyponatremia; the immediate treatment is intravenous glucocorticoids.
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Preoperative and Postoperative Care

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