[High altitude sojourn in heart diseases].
Altitude exposure may cause a number of events in patients with cardiovascular diseases. In patients with coronary heart disease, an increase in the intensity of angina pectoris or a new onset of angina pectoris may be seen most frequently. This happens mainly in the first few days of altitude exposure. Blood pressure may rise, particularly in patients with known hypertension. These changes are caused by increased activity of the sympathetic nervous system. In patients with pulmonary hypertension, additional hypoxic pulmonary vasoconstriction aggravates the degree of pulmonary hypertension.
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Medizinische Klinik, Stadtspital Triemli, Zürich.
D000532:Altitude Sickness / Q000503:physiopathology*; D003326:Coronary Circulation / Q000502:physiology; D003327:Coronary Disease / Q000503:physiopathology*; D016757:Death, Sudden, Cardiac / Q000209:etiology; D006439:Hemodynamics / Q000502:physiology; D006801:Humans; D006973:Hypertension / Q000503:physiopathology*; D006976:Hypertension, Pulmonary / Q000503:physiopathology*; D009051:Mountaineering; D012307:Risk Factors