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Type: Artigo de periódico
Title: Hemodynamic Disorders Related To Beating Heart Surgery Using Cardiac Stabilizers: Experimental Study.
Author: Oliveira, Pedro Paulo Martins de
Braile, Domingo Marcolino
Vieira, Reinaldo Wilson
Petrucci Junior, Orlando
Silveira Filho, Lindemberg Mota
Vilarinho, Karlos Alexandre de Sousa
Barbosa, Elaine Soraia de Oliveira
Antunes, Nilson
Abstract: To study in swine the hemodynamic changes secondary to the use of stabilizers for off-pump coronary artery bypass graft surgeries by means of both a suction device Octopus and a compression device (Speroni). Ten swine underwent median sternotomy. Monitoring of ECG, continuous cardiac output, mean arterial pressure, mean pulmonary artery pressure, mean right and left atrial pressures, and right and left ventricular diastolic pressure were performed. Stroke volume and systemic vascular resistance were calculated. Both stabilizers were studied placed on three vessels: anterior interventricular branch, posterior interventricular branch, and marginal branch of the circumflex branch. Each animal was randomly designed to application regarding the type of stabilizer and the target artery. The measurements were carried out 5 minutes before and after the stabilizer application. In the anterior interventricular branch changes have occurred only with the compression device, thus reducing cardiac output, stroke volume, and mean arterial pressure, but increasing the systemic vascular resistance. In the posterior interventricular branch changes have occurred with the compression device (Speroni), reducing cardiac output and stroke volume, but increasing the heart rate. With the suction device (octopus) there was an increase of both heart rate and systemic vascular resistance, but a decrease in stroke volume. In the marginal branch of the circumflex branch there was a decrease of cardiac output, stroke volume, and mean arterial pressure with both stabilizers. Also, there was a decrease in the mean pulmonary artery pressure and an increase in the mean right atrial pressure with the compression device (Speroni). Both stabilizers have caused hemodynamic changes. The compression device (Speroni) is more associated with changes than the suction device (Octopus).
Subject: Animals
Atrial Function
Blood Pressure
Coronary Artery Bypass, Off-pump
Coronary Vessels
Heart-assist Devices
Models, Animal
Pulmonary Artery
Stroke Volume
Time Factors
Vascular Resistance
Ventricular Pressure
Rights: aberto
Identifier DOI: 
Date Issue: -1-Uns- -1
Appears in Collections:Unicamp - Artigos e Outros Documentos

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