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- W2053366904 abstract "The immediate effects of sublingual nifedipine (20 mg) were evaluated in 18 men with stable, exercise-related angina pectoris and angiographically confirmed coronary artery obstructions, stratified at the time of left ventricular (LV) angiography according to the degree of LV dysfunction supine at rest (Group 1: n = 9, left ventricular end-diastolic pressure [LVEDP] less than 20 mm Hg; Group 2: n = 9, LVEDP greater than 20 mm Hg). At rest, in the upright posture in both groups, nifedipine reduced the systemic vascular resistance (p less than 0.01). The systemic arterial mean (p less than 0.05) and diastolic (p less than 0.01) pressures were reduced despite an increase in the cardiac output (p less than 0.05). Heart rate was increased only in Group 1 (p less than 0.05). Pulmonary artery occluded pressure was unchanged in both groups. During upright bicycle exercise in all patients, compared to control measurements, systemic arterial pressure (p less than 0.01) and vascular resistance (p less than 0.05) were similarly reduced, while exercise cardiac output response and LV filling pressure did not change after nifedipine. Heart rate was increased in Group 1 (p less than 0.05) and decreased in Group 2 (p less than 0.05). Stroke volume during exercise after nifedipine decreased 1 ml/m2 in Group 1 (p greater than 0.05) and increased 2 ml/m2 in Group 2 (p greater than 0.05) compared to control measurements; the between-group difference in the exercise heart rate and stroke volume responses after nifedipine were significant at the 5% level.(ABSTRACT TRUNCATED AT 250 WORDS)" @default.
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- W2053366904 date "1984-02-01" @default.
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- W2053366904 title "Hemodynamic effects of nifedipine during upright exercise in stable angina pectoris and either normal or severely impaired left ventricular function" @default.
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- W2053366904 doi "https://doi.org/10.1016/0002-9149(84)90011-0" @default.
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