Feasibility of Measuring Myocardial Performance Index of the Right Ventricle in Anesthetized Patients

2010 ◽  
Vol 24 (2) ◽  
pp. 270-274 ◽  
Author(s):  
Isabelle Michaux ◽  
Manfred Seeberger ◽  
Regina Schuman ◽  
Karl Skarvan ◽  
Miodrag Filipovic
Keyword(s):  
Right Ventricle ◽  
Performance Index ◽  
Myocardial Performance Index ◽  
Myocardial Performance ◽  
The Right

Is myocardial performance index useful in differential diagnosis of moderate and severe hypoxic–ischaemic encephalopathy? A serial Doppler echocardiographic evaluation

2012 ◽  
Vol 22 (3) ◽  
pp. 335-340 ◽  
Author(s):  
Sevim Karaarslan ◽  
Hayrullah Alp ◽  
Tamer Baysal ◽  
Derya Çimen ◽  
Rahmi Örs ◽  
...  
Keyword(s):  
Differential Diagnosis ◽  
Left Ventricle ◽  
Right Ventricle ◽  
Performance Index ◽  
Myocardial Performance Index ◽  
Control Group ◽  
Myocardial Performance ◽  
Performance Indexes ◽  
Left And Right ◽  
The Right

AbstractIntroductionThe aim of this study was to investigate the importance of myocardial performance index as an additive criterion to Sarnat criteria in differential diagnosis of newborn babies with moderate and severe hypoxic–ischaemic encephalopathy.MethodsOur study group included 50 healthy term newborn babies and 20 newborn babies with hypoxic–ischaemic encephalopathy. The 20 newborn babies with hypoxic–ischaemic encephalopathy were scored using Sarnat grades. Left and right ventricular functions were determined on the first day and thereafter in the 1, 3–4, 6–7, and 11–12 months of life by M-Mode and pulsed Doppler.ResultsMyocardial performance indexes of the left ventricle were significantly higher in the severe hypoxic–ischaemic encephalopathy group than in the control group during the first, second, and third analyses (p = 0.01, p = 0.02, p = 0.02, respectively) and only during the first analysis (p = 0.01) in the moderate hypoxic–ischaemic encephalopathy group. In addition, the myocardial performance indexes of the right ventricle were significantly higher during the first, second, and third analyses in both severe and moderate hypoxic–ischaemic encephalopathy groups than in the control group (p = 0.01, all). Hypoxia-induced alterations last longer in the right ventricle than in the left ventricle in the moderate group, as during the second and third analyses myocardial performance index continues to be higher than the control group.ConclusionMyocardial performance indexes for the left and right ventricles were significantly higher in both severe and moderate hypoxic–ischaemic encephalopathy groups than in the control group during the first analysis, and myocardial performance index greater than or equal to 0.5 can be used in order to distinguish moderate and severe hypoxic–ischaemic encephalopathy babies according to Sarnat grades as a discriminative additive criterion.

Non-invasive assessment of right ventricular function in the late follow-up of the Senning procedure

2005 ◽  
Vol 15 (2) ◽  
pp. 154-159 ◽  
Author(s):  
Samira S. Morhy ◽  
Jose L. Andrade ◽  
Andressa M. Soares ◽  
Zilma V. Ribeiro ◽  
Tatiana M. Wilberg ◽  
...  
Keyword(s):  
Ejection Fraction ◽  
Right Ventricular ◽  
Ventricular Function ◽  
Performance Index ◽  
Myocardial Performance Index ◽  
Ventricular Pressure ◽  
Myocardial Performance ◽  
Resonance Imaging ◽  
First Derivative ◽  
The Right

Deteriorating ventricular function is a major concern after the Senning operation. A Doppler-derived non-geometric measurement, the so-called myocardial performance index, has been described for use in adults and children. We aimed to assess the utility of this index as a method for quantification of right ventricular function in patients in the late follow-up of the Senning procedure, and to correlate the right ventricular ejection fraction and the first derivative of right ventricular pressure as derived using echocardiography with the ejection fraction determined using magnetic resonance imaging.We studied 44 patients within a mean postoperative period of 15.3 years. We calculated the right ventricular myocardial performance index by pulsed wave Doppler interrogation of tricuspid inflow and aortic outflow, the ejection fraction by Simpson's rule, and the first derivative of right ventricular pressure by continuous wave Doppler from tricuspid regurgitation.Mean values of right ventricular myocardial performance index, ejection fraction, and the first derivative of right ventricular pressure were 0.50, 39 percent and 1,398 millimetres of mercury per second, respectively. A cut-off value of 0.47 for the right ventricle myocardial performance index was determined, with a sensitivity of 75 percent and a specificity of 62.5 percent. We found no correlation between ejection fraction and the first derivative of right ventricular pressure as estimated by echocardiography and the ejection fraction as shown by magnetic resonance imaging (r2 equal to 0.29 and 0.04 respectively).We concluded, first, that patients with preserved right ventricular function had values for the right ventricular myocardial performance index lower than 0.47, and second, that ejection fraction and the first derivative of right ventricular pressure as determined echocardiographically did not correlate with values derived using magnetic resonance imaging.

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