پیوندهای مفید
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Doppler-Derived Myocardial Performance Index in Healthy Children in Shiraz | ||
| Iranian Journal of Medical Sciences | ||
| مقاله 8، دوره 29، شماره 2، دی 2004، صفحه 85-89 اصل مقاله (75.76 K) | ||
| نوع مقاله: Original Article(s) | ||
| نویسندگان | ||
| M. Borzoee* ؛ Z. Kheirandish | ||
| Pediatric Cardiology Division, Pediatrics Department, Shiraz University of Medical Sci-ences, Shiraz, Iran | ||
| چکیده | ||
| Background: Assessment of myocardial function is essential in heart disease, but in regard to systolic and diastolic functions such evaluation has limitation. Ejection fraction is difficult to assess in abnormally-shaped ventricles, and diastolic inflow velocity pattern may be fused because of tachycardia. Objective: A myocardial performance index (MPI) or Tei index has been developed for adults and children. It is a Doppler derived non-geometric measure of ventricular function and is independent of heart rate. This index measures the ratio of isovolumic contraction time plus isovolumic relaxation time to ventricular ejection time. Methods: We studied 108 healthy children from 3 days to18 years of age, in whom ejection fraction was measured using M-mode (73±8%) and 2-dimensional echocardiogram biplane Simpson's method (62±7%). Results: Right and left ventricular myocardial performance indices were 0.25 ±0.09 and 0.36 ±0.11 respectively. No correlation was found between Echo Doppler index and age, heart rate and left ventricular dimensions. Conclusion: Thus, MPI is a simple and accurate tool for quantitative assessment of right and left ventricular functions and because of easy application and reproducibility; it could be regarded as an important measurement in a comprehensive hemodynamic study, especially in those with abnormal ventricular geometry. | ||
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آمار تعداد مشاهده مقاله: 905 تعداد دریافت فایل اصل مقاله: 528 |
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