Why the study?
Does obstructive sleep apnea alter vasoconstrictor sensitivity and cholinergic responsiveness in the forearm vasculature compared to healthy controls?
Population
20 males. Excluded: regular medication, known arterial hypertension, diabetes mellitus, or dyslipidemia.
Comparison
Intra-arterial infusion of angiotensin II and… vs Healthy controls receiving the same…
Design
Case-control
Authors
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OSA may enhance angiotensin II vasoconstrictor sensitivity with preserved acetylcholine response; hypothesis-generating and requires prospective validation before clinical relevance.
Does obstructive sleep apnea alter vasoconstrictor sensitivity and cholinergic responsiveness in the forearm vasculature compared to healthy controls?
Patients with obstructive sleep apnea exhibit enhanced vasoconstrictor sensitivity to angiotensin II, but their endothelial function (acetylcholine responsiveness) appears preserved when isolated from other cardiovascular risk factors.
Kraiczi et al. (2000) studied this question.
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