sexta-feira, outubro 29, 2010

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The Role of Ischemic Mitral Regurgitation in the Pathogenesis of Acute Pulmonary Edema

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Exercise Echocardiography
 
Symptom-limited, graded, bicycle exercise testing was performed with the patients in a semisupine position on a tilting exercise table. Beta-blockers were given neither on the day before the test nor on the morning of the test. After an initial workload of 25 W maintained for six minutes, the workload was increased every two minutes by 25 W. Every two minutes, blood pressure was measured and a 12-lead electrocardiogram was obtained. Two-dimensional and Doppler echocardiographic recordings were obtained throughout the test.
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Conclusions: In patients with left ventricular systolic dysfunction, acute pulmonary edema is associated with the dynamic changes in ischemic mitral regurgitation and the resulting increase in pulmonary vascular pressure.
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Estudo brilhante que analisou as mudanças na regurgitação mitral que provocam o edema pulmonar.
(During exercise, regurgitant volume and the effective regurgitant orifice area increased (by 26+/-14 ml and 16+/-10 mm(2)), respectively).
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