Transesophageal Echo-doppler evaluation of the hemodynamic effects of positive-pressure ventilation after coronary artery surgery
| Autor: | J Everaert, Jacques J. Koolen, Cees A. Visser, Constant L.A. Reichert, Jan Poelaert |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Artificial ventilation
Adult Male medicine.medical_specialty medicine.medical_treatment Cardiac Volume Blood Pressure Pulmonary Artery Ventricular Function Left Intermittent Positive-Pressure Ventilation Positive-Pressure Respiration Esophagus Internal medicine Mitral valve medicine.artery medicine Humans cardiovascular diseases Cardiac Output Coronary Artery Bypass Positive end-expiratory pressure Aged Mechanical ventilation Postoperative Care business.industry Middle Aged Myocardial Contraction Anesthesiology and Pain Medicine medicine.anatomical_structure Flow velocity Echocardiography Regional Blood Flow Anesthesia Pulmonary artery cardiovascular system Cardiology Ventricular Function Right Mitral Valve Female Cardiology and Cardiovascular Medicine business Venous return curve |
| Zdroj: | Journal of cardiothoracic and vascular anesthesia. 6(4) |
| ISSN: | 1053-0770 |
| Popis: | Transesophageal echocardiography was used to extend knowledge about the impact of positive end-expiratory pressure (PEEP) during mechanical ventilation on right and left ventricular function and right ventricular impedance. At 20 cmH20 PEEP, a progressive increase of right ventricular end-diastolic area was seen (27%) that coincided with a reduction of early left ventricular filling velocity (25%) across the mitral valve, and a decrease of both pulmonary artery flow velocity (end-expiration 27% and end-inspiration 42%) and time-velocity index (end-inspiration 25%). As these changes were not accompanied by a change of the fractional area of contraction, the increase of the right ventricular diameter might be explained by right ventricular compensation due to an imbalance between augmented right ventricular impedance and reduced venous return. |
| Databáze: | OpenAIRE |
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