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Endocrine causes of secondary hypertension
1Virginia Commonwealth University Health System, Richmond, VA 23298-0160, USA. dsica@mcvh-vcu.edu
Insights
Secondary hypertension, often caused by endocrine disorders, requires thorough evaluation. Primary aldosteronism is a frequent endocrine cause, and identifying it can lead to improved blood pressure management.
Area of Science:
- Endocrinology
- Nephrology
- Internal Medicine
Background:
- Secondary hypertension is prevalent, with endocrine disorders presenting diverse patterns like new-onset or uncontrolled blood pressure.
- A detailed patient history and physical examination are crucial for identifying potential endocrine causes of hypertension.
Purpose of the Study:
- To highlight the significance of identifying endocrine causes of secondary hypertension.
- To emphasize primary aldosteronism as a common and treatable endocrine etiology of difficult-to-manage hypertension.
Main Methods:
- Review of clinical presentations of endocrine hypertension.
- Discussion of diagnostic prerequisites including patient history and physical examination.
- Comparative analysis of the frequency of different endocrine causes.
Main Results:
- While pheochromocytoma and Cushing's disease are rare, primary aldosteronism is a frequent endocrine cause of secondary hypertension.
- Hypokalemia, a potential hallmark of primary aldosteronism, can be inconsistently present, complicating diagnosis.
Conclusions:
- Identifying endocrine causes of hypertension is critical as surgical intervention can resolve or significantly improve the condition.
- Primary aldosteronism should be a primary consideration in patients with resistant or difficult-to-treat hypertension.
Abstract:
Secondary hypertension is common in clinical practice if a broad definition is applied. Various patterns of hypertension exist in the patient with an endocrine source of their disease, including new-onset hypertension in a previously normotensive individual, a loss of blood pressure control in a patient with previously well-controlled blood pressure, and/or labile blood pressure in the setting of either of these 2 patterns. A thorough history and physical exam, which can rule out concomitant medications, alcohol intake, and over-the-counter medication use, is an important prerequisite to the workup for endocrine causes of hypertension. Endocrine forms of secondary hypertension, such as pheochromocytoma and Cushing's disease, are extremely uncommon. Conversely, primary aldosteronism now occurs with sufficient frequency so as to be considered "top of the list" for secondary endocrine causes in otherwise difficult-to-treat or resistant hypertension. Primary aldosteronism can be insidious in its presentation since a supposed hallmark finding, hypokalemia, may be variable in its presentation. It is important to identify secondary causes of hypertension that are endocrine in nature because surgical intervention may result in correction or substantial improvement of the hypertension.
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