Systemic to Pulmonary Bronchial Blood Flow in Mitral Stenosis*
| Autor: | Piergiuseppe Agostoni, Elisabetta Doria, Marco Agrifoglio, Andrea Sala, Vincenzo Arena, G. Susini |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
Adult
Male Pulmonary and Respiratory Medicine Pulmonary Circulation medicine.medical_specialty Bronchi Coronary Disease Critical Care and Intensive Care Medicine Body Temperature law.invention Pulmonary vein Mitral valve stenosis law Internal medicine medicine Cardiopulmonary bypass Humans Mitral Valve Stenosis Pulmonary Wedge Pressure Cardiac Output Pulmonary wedge pressure Aged Cardiopulmonary Bypass business.industry Extracorporeal circulation Venous blood Blood flow Middle Aged medicine.disease Blood pressure Regional Blood Flow Heart Valve Prosthesis Anesthesia Blood Circulation Cardiology Mitral Valve Female Cardiology and Cardiovascular Medicine business Venous Pressure |
| Zdroj: | Chest. 99:642-645 |
| ISSN: | 0012-3692 |
| DOI: | 10.1378/chest.99.3.642 |
| Popis: | We measured systemic to pulmonary bronchial blood flow [Qbr(s-p)] during total cardiopulmonary bypass in 15 patients with mitral stenosis and elevated pulmonary venous pressure (group A, mean pulmonary wedge pressure = 22.2 +/- 5.4 mm Hg, mean +/- SD) and in 15 patients with coronary artery diseases and normal pulmonary venous pressure (group B). Qbr(s-p) is the volume of blood accumulating in the left side of the heart in the absence of pulmonary and coronary flows. This blood was vented through a cannula introduced into the left atrium and measured. Qbr(s-p) was 76.3 +/- 13.9 ml/min (2.18 +/- 0.37 percent of extracorporeal circulation pump flow) and 22.3 +/- 2.1 (0.63 +/- 0.15) in group A and B, respectively (p less than 0.01). During total cardiopulmonary bypass, pulmonary venous pressure is approximately atmospheric pressure, and no differences in systemic blood pressure, extracorporeal circulation pump flow, and airways pressure were observed between group A and B. Therefore, vascular resistance through the bronchial vessels draining into the pulmonary circulation is reduced in patients with mitral stenosis and elevated pulmonary venous pressure. |
| Databáze: | OpenAIRE |
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