Utility of myocardial performance index measured by left ventricular catheterization.
BACKGROUND
Myocardial performance index (MPI) is a valuable index of global ventricular performance. It is almost always measured by Doppler echocardiography. The purposes of this study were (I) to compare MPI measured by catheterization (MPIc) and that measured by Doppler echocardiography (MPId), and (2) to compare it with the functional status.


METHODS
The study included 80 patients who had undergone left heart catheterization. The MPIc was measured from the pressure recordings obtained at left ventricle and aorta.


RESULTS
Mean MPId and MPIc were 0.40 +/- 0.12 and 0.42 +/- 0.12, respectively. Mean left ventricular end diastolic pressure (LVEDP) was 13 +/- 5 mm Hg. Mean heart rate was 77 +/- 11 beats/min. Mann-Whitney U test revealed that MPIc could discriminate between the functional statuses of the patients. The regression analysis revealed that there is a good correlation between MPIc and MPId, LVEDP or heart rate. There was no significant difference between MPIc and MPId (p > 0.05).


CONCLUSIONS
The present data show that (I) the MPIc has a strong correlation with MPId; (2) it is a good discriminator of functional status. It may provide an additional information regarding the left ventricular performance in patients who underwent the cardiac catheterization.
Ozkan
Mustafa
M
Gulhane Military Medical Academy Department of Cardiology, Ankara, Turkey. musozkan@gata.edu.tr
Uzun
Mehmet
M
Erinc
Kursad
K
Koz
Cem
C
Baysan
Oben
O
Sag
Cemal
C
Kardesoglu
Ejder
E
Yokusoglu
Mehmet
M
Genc
Celal
C
Isik
Ersoy
E
D000704:Analysis of Variance; D001794:Blood Pressure; D006328:Cardiac Catheterization / Q000295:instrumentation; D015150:Echocardiography, Doppler / Q000295:instrumentation; D005260:Female; D006339:Heart Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D009200:Myocardial Contraction / Q000502:physiology*; D012372:ROC Curve; D013318:Stroke Volume; D018487:Ventricular Dysfunction, Left / Q000175:diagnosis* / Q000503:physiopathology; D016277:Ventricular Function, Left / Q000502:physiology