Objectives :

COMPARISON BETWEEN PROGNOSTIC VALUE OF LEFT VENTRICULAR MYOCARDIAL PERFORMANCE INDEX AND RIGHT VENTRICULAR MYOCARDIAL PERFORMANCE INDEX IN CORONARY ARTERY BYPASS GRAFT SURGERY Objectives: Left and right ventricular myocardial performance index are Doppler-derived parameter of non- geometrical ventricular function that measure both systolic and diastolic function of ventricles. The aim of this study is to compare prognostic value of these factors in patients undergoing coronary artery bypass graft surgery. Methods: In longitudinal study, 100 consecutive patients who underwent coronary artery bypass graft surgery were studied from March 2005 to August 2007. Recovery of left and right ventricular myocardial performance indexes were measured serially by Doppler echocardiography before and after surgery. Patients were under supervision for 4 months after hospital discharge. Statistical analysis included chi-squre test and student t-test. Results: For analysis of the events, we divided patients to two groups. Group A was considered with left ventricular ejection fraction equal or less than 40% and group B with left ventricular ejection fraction more than 40%. Left and right ventricular myocardial performance indexes were not related to pericardial effusion, pleural effusion and infection. In group A, left ventricular myocardial performance index had more prognostic effect on postoperative atrial fibrillation and myocardial infarction than right ventricular myocardial performance index. In group B, right ventricular myocardial performance index had more prognostic effect on ventilation time and Intensive Care Unit duration in comparison with group A. Conclusions: In group A, left ventricular myocardial performance index had more prognostic effect on incidence of postoperative atrial fibrillation and myocardial infarction than right ventricular myocardial performance index which had prognostic effect on ventilation time and Intensive Care Unit duration in group B. Daryoosh Javidi, MD Consultant cardiac surgeon Niloofar Saﬀarian, MD Cardiologist Iran – Tehran – Pars hospital AF MI Infection Pericardial effusion Plural effusion Ventilation time ICU stay EF≤40 EF>40 EF≤40 EF>40 EF≤40 EF>40 EF≤40 EF>40 EF≤40 EF>40 EF≤40 EF>40 EF≤40 EF>40 LVMPI 0.62 0.52 0.63 0.58 0.60 0.50 0.61 0.59 0.58 0.54 0.52 0.54 0.58 0.56 P- Value 0.003 0.120 0.010 - 0.230 0.304 0.219 0.400 0.857 0.553 0.392 0.471 0.296 0.341 RVMPI 0.52 0.50 0.47 0.58 0.50 0.48 0.59 0.52 0.54 0.46 0.47 0.56 0.44 0.57 P- Value 0.44 0.26 0.34 0.19 0.540 0.401 0.149 0.261 0.320 0.299 0.360 0.033 0.410 0.000 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 LVMPI

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Daryoosh Javidi, MD Consultant cardiac surgeon Niloofar Saffarian, MD Cardiologist Iran – Tehran – Pars hospital. - PowerPoint PPT Presentation

Transcript of Objectives :

COMPARISON BETWEEN PROGNOSTIC VALUE OF LEFT VENTRICULAR MYOCARDIAL PERFORMANCE INDEX AND

RIGHT VENTRICULAR MYOCARDIAL PERFORMANCE INDEX IN CORONARY ARTERY BYPASS GRAFT SURGERY

Objectives: Left and right ventricular myocardial performance index are Doppler-derived parameter of non-geometrical ventricular function that measure both systolic and diastolic function of ventricles. The aim of this study is to compare prognostic value of these factors in patients undergoing coronary artery bypass graft surgery.Methods: In longitudinal study, 100 consecutive patients who underwent coronary artery bypass graft surgery were studied from March 2005 to August 2007. Recovery of left and right ventricular myocardial performance indexes were measured serially by Doppler echocardiography before and after surgery. Patients were under supervision for 4 months after hospital discharge. Statistical analysis included chi-squre test and student t-test.Results: For analysis of the events, we divided patients to two groups. Group A was considered with left ventricular ejection fraction equal or less than 40% and group B with left ventricular ejection fraction more than 40%. Left and right ventricular myocardial performance indexes were not related to pericardial effusion, pleural effusion and infection.In group A, left ventricular myocardial performance index had more prognostic effect on postoperative atrial fibrillation and myocardial infarction than right ventricular myocardial performance index. In group B, right ventricular myocardial performance index had more prognostic effect on ventilation time and Intensive Care Unit duration in comparison with group A.Conclusions: In group A, left ventricular myocardial performance index had more prognostic effect on incidence of postoperative atrial fibrillation and myocardial infarction than right ventricular myocardial performance index which had prognostic effect on ventilation time and Intensive Care Unit duration in group B.

Daryoosh Javidi, MD Consultant cardiac surgeon Niloofar Saffarian, MD Cardiologist Iran – Tehran – Pars hospital

AF MI InfectionPericardial

effusionPlural effusion Ventilation time ICU stay

EF≤40 EF>40 EF≤40 EF>40 EF≤40 EF>40 EF≤40 EF>40 EF≤40 EF>40 EF≤40 EF>40 EF≤40 EF>40

LVMPI 0.62 0.52 0.63 0.58 0.60 0.50 0.61 0.59 0.58 0.54 0.52 0.54 0.58 0.56

P-Value 0.003 0.120 0.010 - 0.230 0.304 0.219 0.400 0.857 0.553 0.392 0.471 0.296 0.341

RVMPI 0.52 0.50 0.47 0.58 0.50 0.48 0.59 0.52 0.54 0.46 0.47 0.56 0.44 0.57

P-Value 0.44 0.26 0.34 0.19 0.540 0.401 0.149 0.261 0.320 0.299 0.360 0.033 0.410 0.000

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