Noninvasive Doppler-derived myocardial performance index: Correlation with simultaneous measurements of cardiac catheterization measurements

Tei, Chuwa; Nishimura, Rick A.; Seward, James B.; Tajik, A. Jamil

doi:10.1016/s0894-7317(97)70090-7

Cited by 709 publications

(540 citation statements)

References 35 publications

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“…The index of myocardial performance scores in this study ranged from 0.2 to 1.0 and was very similar to the range reported in a similar earlier study of patients with ischemic heart disease (0.29-0.90). 16 The "cut-off" value of an index in our study was very similar to the one in the studies of Poulsen et al 19,23 Of importance is the fact that we have demonstrated that the Tei index retains its prognostic value in a subgroup of patients with preserved LV systolic function. This is in agreement with the results of the study by Kouris et al, who observed abnormal values of the Tei index in patients Abbreviations: RR = relative risk, CI = confidence interval, CK = creatine kinase, ACE = angiotensin-converting enzyme, MI = myocardial infarction.…”

Section: Comparison With Previous Studiessupporting

confidence: 86%

“…15 Other studies have compared the index of myocardial performance with hemodynamic indices in ischemic and dilated cardiomyopathy. 16,17 These reports concluded that the index is a sensitive adjunctive parameter for the assessment of cardiac function. 18 Recently, a paper on the value of the Tei index in the early phase of MI was published.…”

Section: Introductionmentioning

confidence: 99%

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Long‐term prognostic value of an index of myocardial performance in patients with myocardial infarction

Szymański

Rezler

Stec

et al. 2002

Clinical Cardiology

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SummaryBackground: The Tei index of myocardial performance (IMP), which combines parameters of both systolic and diastolic ventricular function, is a useful prognostic factor in many clinical settings.Hypothesis: This study assessed the long-term prognostic value of IMP in patients discharged from hospital after acute myocardial infarction (AMI).Methods: Doppler/echocardiographic studies were recorded in 90 consecutive patients on Day 14 ± 2 following an AMI. The IMP was calculated from the Doppler recordings, as a sum of isovolumetric contraction time and isovolumetric relaxation time, divided by the ejection time.Results: The patients were followed for an average (SD) of 57.8 (16.1) months. During this period there were 22 (24%) cardiac events, defined as cardiac deaths (10) (RR 3.23;; p = 0.009), and mitral E wave deceleration time ≤ 0.145 s (RR 2.94; 95% CI 1.24-6.92; p = 0.014) were the only independent predictors of cardiac events during the follow-up period. In a subgroup of patients with preserved LV systolic function (ejection fraction

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Section: Comparison With Previous Studiessupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Long‐term prognostic value of an index of myocardial performance in patients with myocardial infarction

Szymański

Rezler

Stec

et al. 2002

Clinical Cardiology

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“…This may be especially beneficial for measuring the right ventricular function, where the complex geometric shape has limited accurate assessment of function by non-invasive means. Previous studies have found a good correlation of MPI with invasive measures of systolic and diastolic function [13]. MPI has also been found to be independent of variability in heart rate (range 50-120 beats/min) or age in the pediatric population [14].…”

mentioning

confidence: 83%

“…MPI is a combined measure of systolic and diastolic function. Higher MPI values have been found to correlate with worsening myocardial systolic and/or diastolic function [13,23]. LV MPI was significantly elevated in Group 2 patients when compared to the Group 1 patients.…”

Section: Clinical Findingsmentioning

confidence: 98%

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Cardiac abnormalities in children with sickle cell anemia

et al. 2002

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Sickle cell anemia (SCA) results in chronic volume overload of the heart due to hemodilution. Previous echocardiographic studies of cardiac function in children with SCA have not accounted for these abnormal loading conditions. The objectives of this study were to (1) determine how the degree of anemia and transfusion status relate to cardiac findings and (2) evaluate cardiac function using load-independent parameters of function. We evaluated 77 patients with SCA, ages 2 to 22 years (mean ± SD = 11.7 ± 4.7), using physical examination, electrocardiography, and echocardiography. We compared two groups of patients. Group 1 consisted of 57 non-transfused patients, and Group 2 consisted of 20 patients on a chronic transfusion protocol. Group 1 patients exhibited a significantly lower hemoglobin, higher cardiac output, and larger left ventricular (LV) end-diastolic dimension and LV mass than groups 2 (P < 0.05). However, the velocity of circumferential fiber shortening-wall stress index (a load-independent measure of systolic function) was normal and not statistically different between the two groups. Conversely, the LV myocardial performance index (a measure of combined systolic and diastolic function) was significantly higher in Group 2 (P < 0.001), possibly indicating impaired myocardial diastolic function. SCA in children results in a volume-overloaded heart with a significant increase in LV dimensions and mass, both proportional to the degree of anemia. Despite these abnormal loading conditions, systolic function is preserved. Patients on a chronic transfusion protocol may develop diastolic dysfunction despite iron chelation therapy. Am.

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