title: Correlation of myocardial performance index assessed by different echocardiographic methods in patients with acute myocard infarction receiving different reperfusion treatment.
abstract: OBJECTIVE
  Myocardial performance index (MPI) is a well known prognostic parameter in acute myocardial infarction (AMI) patients, which has been used to assess global cardiac functions. In this study, we aimed to evaluate the corelation between the MPI levels obtained by PW doppler and Tissue doppler ultrasonography with reperfusion in AMI patients.
  
  
  METHODS
  Fifty-four consecutive acute ST elevatation myocardial infarction patients, 26 treated with primary percutaneous coronary intervention (PCI) and 28 with thrombolytic therapy (TT); and 15 consecutive healthy controls were included in the study. MPI levels were measured with pulsed-wave (PW) doppler and tissue Doppler ultrasonography in all patients. The isovolumic relaxation time (IVRT), isovolumic contraction time (IVCT) and ejection time (ET) values used to measure MPI levels were determined. Corelation between the time intervals obtained with both methods were evaluated. MPI variations were evaluated in patients treated with PCI and TT. A significant corelation was observed in MPI levels obtained with PW doppler and tissue doppler ultrasonography (P<0.001) as well as between IRT, ICT and ET values (for all parameters; P<0.001). No significant corelation was observed between the MPI levels obtained with PW doppler and tissue doppler ultrasonography in patients treated with primary PTCA and TT (P=0.128, P=0.991, respectively). A significant corelation was observed between the MPI values obtained by PW doppler and tissue doppler ultrasonography with reperfusion interval (P=0.002, P<0.001, respectively).
  
  
  CONCLUSIONS
  As a result, tissue Doppler ultrasonography may be used as an alternative to PW doppler to evaluate MPI, which is a well known prognostic factor in AMI. No relation has been observed between MPI values in early phases of AMI with reperfusion pattern, while a connection has been observed between MPI and reperfusion interval.
authors: Bakirköy Dr. Sadi Konuk Training and Research Hospital, Istanbul, Turkey - opirhan@gmail.com.
authors: O
authors: O
authors: Pirhan
authors: F
authors: F
authors: Ozcelik
authors: B
authors: B
authors: Demir
authors: G
authors: G
authors: Karakus
authors: I
authors: I
authors: Caglar
authors: H
authors: H
authors: Oktay Tureli
authors: A
authors: A
authors: Degirmencioglu
mesh_terms: D000704:Analysis of Variance; D016022:Case-Control Studies; D004452:Echocardiography / Q000379:methods*; D018619:Echocardiography, Doppler, Pulsed / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009200:Myocardial Contraction / Q000502:physiology; D009203:Myocardial Infarction / Q000000981:diagnostic imaging* / Q000503:physiopathology / Q000628:therapy; D015425:Myocardial Reperfusion / Q000379:methods*; D013318:Stroke Volume / Q000502:physiology; D015912:Thrombolytic Therapy / Q000379:methods