Short-term Exposure to High Altitude in Patients With Asymptomatic Aortic Stenosis

Aortic stenosis is a common disease with increasing prevalence due to an aging population. Aortic valve replacement is indicated for symptomatic severe aortic stenosis. Leisure activities and tourism at high altitude destinations are popular but may impose a higher risk to patients with aortic stenosis. Pathophysiological considerations led to an expert consensus to avoid high altitude exposure, though there is no robust scientific evidence. Hence, the objective of this study is to evaluate the safety of high altitude exposure in patients with asymptomatic moderate or severe aortic stenosis by the measurement of surrogate markers for cardiac adverse events such as the decrease in exercise capacity, the assessment of changes in cardiac filling pressures, cardiac dimensions and function, and the evaluation of the incidence of cardiac arrhythmia.

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