doppler-derived right ven t ricu l ar myoc ard ial performance in dex in neon ates: n ormal values
نویسندگان
چکیده
doppler-derived myocardial performance index (mpi) , defined as the s um of isovolumetric contraction and relaxation durations divided by ejection time, is an easily measured and reproducible index that shows both systolic and diastolic myocardial function. the goal of this study was to define normal values of right ventricular mpi in neonates in the first 48 to 72 hours of life. fifty-one quiet or sleeping healthy and term neonates underwent complete m-mode, two-dimensional color-doppler echocardiographic examination and rv mpi was calculated in them. statistical analysis was performed using spss software. a p value less than 0.05 was considered as significant. rv mpi was shown to be 0.23±0.14 in healthy neonates. there was no correlation between rv mpi and either age or weight of the newborn infants. while this value closely resembles the results of some researchers, it is lower than that previously reported by other investigators in healthy children. the lower value of rv mpi in neonates may be possibly related to the higher pulmonary arterial pressure or right ventricular mass in the first few days of life in neonates. further study to evaluate the effect of pulmonary arterial pressure and right ventricular mass on rv mpi is recommended.
منابع مشابه
DOPPLER-DERIVED RIGHT VEN T RICU L AR MYOC ARD IAL PERFORMANCE IN DEX IN NEON ATES: N ORMAL VALUES
Doppler-derived myocardial performance index (MPI) , defined as the s um of isovolumetric contraction and relaxation durations divided by ejection time, is an easily measured and reproducible index that shows both systolic and diastolic myocardial function. The goal of this study was to define normal values of right ventricular MPI in neonates in the first 48 to 72 hours of life. Fifty-one...
متن کامل"doppler-derived right ventricular myocardial performance index in neonates: normal values "
doppler-derived myocardial performance index (mpi), defined as the sum of isovolumetric contraction and relaxation durations divided by ejection time, is an easily measured and reproducible index that shows both systolic and diastolic myocardial function. the goal of this study was to define normal values of right ventricular (rv) mpi in neonates in the first 48 to 72 hours of life. fifty-one q...
متن کاملDoppler-Derived Myocardial Performance Index in Healthy Children in Shiraz
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 adult...
متن کاملIii . T He N Ormal Ecg W Aves , T Ime I Ntervals , and Its N Ormal
Principal component analysis (PCA) is one of the most valuable results oriented techniques of applied linear algebra. PCA is used abundantly in all forms of analysis from neuroscience to computer graphics because it is a simple, non-parametric method of extracting relevant information from confusing data sets. Extracting or decoding this information or feature from ECG signal has been found ver...
متن کاملdoppler-derived myocardial performance index in healthy children in shiraz
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 adu...
متن کاملمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
medical journal of islamic republic of iranجلد ۱۶، شماره ۳، صفحات ۱۲۹-۱۳۲
کلمات کلیدی
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023