Journal of medical case reports · 2025
Primary aldosteronism diagnosis in the intensive care unit: resistant alkalosis and hypokalemia during severe sepsis with hyperlactatemia: a case report.
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Garg Yug, Vaishnav Madhumati S, Harsha Reshma, Garg Nidhi, Dinesha Siddhartha, Lekkala Leena, Kamala Thummala, Muniraj Kavitha, Srikanta Sathyanarayana, Samatvam Endocrinology Diabetes Collaborative Group
Аннотация
BACKGROUND: Primary aldosteronism screening indications include hypertension (resistant, severe, early onset, with stroke/other comorbidities/sleep apnea), hypokalemia, adrenal incidentaloma, and primary aldosteronism first-degree relatives. We report rare diagnosis of primary aldosteronism in intensive care unit setting, characterized by resistant alkalosis and hypokalemia during severe sepsis with hyperlactatemia.
CASE PRESENTATION: A 50-year-old Asian-Indian male patient with 18-year history of hypertension (blood pressure 166/104 mmHg) presented with acute septicemia and septic shock following an outpatient urethral dilatation. Despite aggressive management, including intravenous fluids, inotropes, antibiotics, and potassium supplementation, he exhibited severe alkalosis and resistant hypokalemia. Initial laboratory findings showed blood pressure 90/70 mmHg, heart rate 109 beats per minute, pH 7.49, serum lactate 123 mmol/L, sodium 141-144 mmol/L, potassium 2.7-2.9 mmol/L, and creatinine 1.2-1.54 mg/dL (106.1-136.1 µmol/L). Abdominal imaging revealed left adrenal adenoma (20 mm × 19 mm). Patient improved with supportive care and was discharged on day 10 with reinstituted antihypertensive medications. Post-hospitalization, endocrine evaluation confirmed primary aldosteronism with plasma renin activity 0.62 ng/mL/hour, serum aldosterone 43.2 ng/dL (1.20 nmol/L), and aldosterone-renin ratio 69.7. After initiation of spironolactone, blood pressure significantly improved (currently 122/76 mmHg).
CONCLUSION: Severe sepsis and septic shock in the intensive care unit typically present with metabolic acidosis. This case highlights an atypical presentation of paradoxical, resistant hypokalemia and alkalosis during severe sepsis, leading to a diagnosis of primary aldosteronism. Does the "inbuilt" tendency to metabolic alkalosis in primary aldosteronism confer survival advantage during intercurrent episodes of sepsis and metabolic acidosis? Given the high prevalence of renin-independent aldosterone production and benefits of mineralocorticoid receptor antagonists, universal primary aldosteronism screening for newly diagnosed hypertension appears meritorious and cost-effective.
CASE PRESENTATION: A 50-year-old Asian-Indian male patient with 18-year history of hypertension (blood pressure 166/104 mmHg) presented with acute septicemia and septic shock following an outpatient urethral dilatation. Despite aggressive management, including intravenous fluids, inotropes, antibiotics, and potassium supplementation, he exhibited severe alkalosis and resistant hypokalemia. Initial laboratory findings showed blood pressure 90/70 mmHg, heart rate 109 beats per minute, pH 7.49, serum lactate 123 mmol/L, sodium 141-144 mmol/L, potassium 2.7-2.9 mmol/L, and creatinine 1.2-1.54 mg/dL (106.1-136.1 µmol/L). Abdominal imaging revealed left adrenal adenoma (20 mm × 19 mm). Patient improved with supportive care and was discharged on day 10 with reinstituted antihypertensive medications. Post-hospitalization, endocrine evaluation confirmed primary aldosteronism with plasma renin activity 0.62 ng/mL/hour, serum aldosterone 43.2 ng/dL (1.20 nmol/L), and aldosterone-renin ratio 69.7. After initiation of spironolactone, blood pressure significantly improved (currently 122/76 mmHg).
CONCLUSION: Severe sepsis and septic shock in the intensive care unit typically present with metabolic acidosis. This case highlights an atypical presentation of paradoxical, resistant hypokalemia and alkalosis during severe sepsis, leading to a diagnosis of primary aldosteronism. Does the "inbuilt" tendency to metabolic alkalosis in primary aldosteronism confer survival advantage during intercurrent episodes of sepsis and metabolic acidosis? Given the high prevalence of renin-independent aldosterone production and benefits of mineralocorticoid receptor antagonists, universal primary aldosteronism screening for newly diagnosed hypertension appears meritorious and cost-effective.