Doppler tissue imaging for assessing left ventricular diastolic dysfunction in heart transplant rejection.
OBJECTIVE
To test the hypothesis that diastolic mitral annular motion velocity, as determined by Doppler tissue imaging and left ventricular diastolic flow propagation velocity, is related to the histological degree of heart transplant rejection according to the International Society of Heart and Lung Transplantation (ISHLT).


METHODS
In 41 heart transplant recipients undergoing 151 myocardial biopsies, the following Doppler echocardiographic measurements were performed within one hour of biopsy: transmitral and pulmonary vein flow indices; mitral annular motion velocity indices; left ventricular diastolic flow propagation velocity.


RESULTS
Late diastolic mitral annular motion velocity (A(DTI)) and mitral annular systolic contraction velocity (SC(DTI)) were higher in patients with ISHLT < IIIA than in those with ISHLT >/= IIIA (A(DTI), 8.8 cm/s v 7.7 cm/s (p = 0.03); SC(DTI), 19.3 cm/s v 9.3 cm/s (p < 0.05)). Sensitivity and specificity of A(DTI) < 8.7 cm/s (the best cut off value) in predicting significant heart transplant rejection were 82% and 53%, respectively. Early diastolic mitral annular motion velocity (E(DTI)) and flow propagation velocity were not related to the histological degree of heart transplant rejection.


CONCLUSIONS
Doppler tissue imaging of the mitral annulus is useful in diagnosing heart transplant rejection because a high late diastolic mitral annular motion velocity can reliably exclude severe rejection. However, a reduced late diastolic mitral annular motion velocity cannot predict severe rejection reliably because it is not specific enough.
Stengel
S M
SM
Cardiology, Swiss Cardiovascular Centre Bern, University Hospital, CH-3010 Bern, Switzerland.
Allemann
Y
Y
Zimmerli
M
M
Lipp
E
E
Kucher
N
N
Mohacsi
P
P
Seiler
C
C
D001783:Blood Flow Velocity / Q000502:physiology; D018618:Echocardiography, Doppler, Color / Q000379:methods / Q000592:standards; D005260:Female; D006084:Graft Rejection / Q000000981:diagnostic imaging / Q000503:physiopathology*; D016027:Heart Transplantation / Q000000981:diagnostic imaging / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D008943:Mitral Valve / Q000502:physiology; D011446:Prospective Studies; D011667:Pulmonary Veins / Q000502:physiology; D012372:ROC Curve; D012680:Sensitivity and Specificity; D018487:Ventricular Dysfunction, Left / Q000000981:diagnostic imaging / Q000503:physiopathology*