Hypertension is known to be the major risk factor for stroke. The most common cause of secondary hypertension, primary aldosteronism (PA), is characterized by the excessive secretion of aldosterone and is related to hypertension and hypokalemia. PA accounts for 3-10 % of hypertensive patients, and a higher incidence of vascular complications compared to patients with essential hypertension was observed in several studies. The vascular injury from excessive aldosterone can occur via oxidative stress and collagen remodeling, causing endothelial dysfunction and fibrosis in the vasculature. The association between cerebral small vessel disease (cSVD) and hypertension has been well studies in the past decades. However, not much study has focused on the cSVD burden in patient with PA. The goal of this study is to understand the features of cSVD in patients with PA and for the purpose of understanding the underlying pathophysiology of cerebrovascular injury in this particular patient group.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
DIAGNOSTIC
Masking
NONE
Enrollment
60
Brain MRI with blood sensitive sequence (SWI) will be performed to all enrolled patients.
Bei-Hu Branch, National Taiwan University Hospital
Taipei, Taiwan
Cerebrovascular reactivity
Cerebrovascular reactivity measured by MRI under primary aldosteronism
Time frame: During the brain MRI
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