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Refractory hypertension due to Conn's syndrome
A Schamess1, T Bernik, S Tenner
1Department of Health Care Sciences, George Washington University Medical Center, Washington, DC 20037.
Postgraduate Medicine
|March 1, 1994
Summary
Refractory hypertension may signal curable Conn's syndrome, a disorder often presenting solely with high blood pressure. Early diagnosis via aldosterone and renin tests is key for effective treatment.
Area of Science:
- Endocrinology
- Nephrology
- Cardiovascular Medicine
Background:
- Refractory hypertension can indicate underlying, potentially curable conditions.
- Conn's syndrome (primary aldosteronism) is a significant, often overlooked, cause of hypertension.
- A high index of suspicion is crucial for diagnosing Conn's syndrome.
Observation:
- Hypertension may be the sole presenting symptom of Conn's syndrome.
- Diagnostic indicators include elevated aldosterone levels post-salt loading.
- Abnormally suppressed plasma renin activity is another key diagnostic marker.
Findings:
- Conn's syndrome is frequently caused by a unilateral adrenal adenoma.
- Surgical removal of the adrenal adenoma offers a cure.
- Aldosteronism resulting from bilateral adrenal hyperplasia requires medical management.
Implications:
- Early diagnosis and treatment of Conn's syndrome can prevent long-term cardiovascular complications.
- Identifying curable causes of hypertension improves patient outcomes.
- Management strategies differ based on the underlying cause (adenoma vs. hyperplasia).