المقارنة بين مؤشر اداء عضلة القلب بطريقة الدوبلر الموجي النابض مع مؤشر اداء عضلة القلب بطريقة الدوبلر النسيجي لصدى القلب لمرضى الاختلال الوظيفي الانقباضي للبطين الايسر == Comparison Between Pulsed - Wave Doppler Derived Myocardial Performance Index with Tissue - Doppler Tie index in patients with Left Ventricular Systolic Dysfunction
Author name:
اسيل اقبال سعيد
Supervisor name:
حسن علي الفرحان
General topic:
Medicine
Specific topic:
Echocardiography
Degree:
Higher Diploma
University:
University of Baghdad - Faculty Of Medicine - Internal Medicine Department
Language:
English
University location:
Baghdad
First pages:
19T1322 - p.pdf
Abstract:
Background : MPI is one of the methods used to assess global cardiac function, the Calculation of MPI using TDI may have advantages over conventional left ventricle inflow/outflow tract pulsed - wave Doppler (PWD) method that might be due to heart rariability; for example, all of the data needed for TDI - MPI calculation can be derived from one single cardiac cycle, whereas with PWD at least two different cycles are needed. Thus, heart rate variability does not interfere with TDI - MPI.Aim : Myocardial performance index (MPI) is usually measured with pulsed wave Doppler (PWD). Our aim was to compare this method with TDI - MPI in patients with LV systolic dysfunction and to assess the degree of agreement between PWD and a method based on tissue Doppler imaging (TDI).Patients and methods : Sixty - five patients with LV systolic dysfunction EF by Simpson method (38.6 ± 5.8) and 35 control subjects (with normal LV systolic function and diastole) EF (67.6 ± 2.8) underwent measurement of time intervals and MPI with PWD and pulsed TDI at septal, lateral, anterior, inferior sides of mitral annulus.Results : The agreement was moderate between two methods {Agreement = 46.7% Repeatability (for alpha = 0.05) = 0.609 (NS)}.Receiver operating characteristic curves showed very high accuracy for both methods to discriminate patients with LV systolic dysfunction from healthy subjects; the optimal cutoff point was different and specific to each method : 0.44 for the conventional method and 0.56 for the TDI - MPI method.TDI - MPI values were higher than conventional MPI values in both groups (55% ± 1% vs 44% ± 3%, P < 0.001 in the healthy subjects; 88% ± 23% vs 61% ± 16%, P <0.001 in the patients with HF).Conclusion : We performed a study in healthy adults and in patients with congestive heart failure to investigate the clinical agreement between MPI measured conventionally and by PW - TD of the mitral annulus. We found moderate agreement between MPI measured by the conventional method and by TDI.Both methods had high diagnostic accuracy for detection of systolic dysfunction and TDI - MPI was more sensitive
