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Echocardiographic indexes of allograft rejection in pediatric cardiac transplant recipients
- Source :
- Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography. 5(1)
- Publication Year :
- 1992
-
Abstract
- To determine the usefulness of echocardiographic indexes of left ventricular (LV) function as possible predictors of cardiac rejection, 12 transplant recipients (ages 3 to 17 years) underwent a total of 52 serial echocardiographic examinations and cardiac biopsies. The results were compared to those of 12 normal children (ages 2 to 17 years). Biopsies were graded as no rejection (n = 23), mild rejection (cellular infiltrate, n = 13), and moderate rejection (myocyte necrosis, n = 16). LV dimensions, percent shortening fraction, indexed LV mass, and ejection fraction were measured from M-mode and two-dimensional echocardiography. From the mitral valve Doppler tracing, the following measurements were made: isovolumic relaxation time, peak E and peak A velocities, and the fraction of filling under the E and A waves as well as in the first third of diastole. Compared with normal subjects, transplant recipients with no rejection had higher heart rates (95 +/- 15 vs 80 +/- 17 beats/min), longer isovolumic relaxation time (68.8 +/- 11.2 vs 51.5 +/- 13.6 msec), decreased first third area fraction (0.48 +/- 0.10 vs 0.57 +/- 0.10), and similar shortening fraction, LV mass, and peak E and A velocities (p less than 0.03). Compared with transplant recipients with no rejection, patients in whom mild rejection developed also had decreased shortening fraction (31% +/- 10% vs 37% +/- 8%) and decreased peak E velocity (0.68 +/- 0.19 vs 0.88 +/- 0.15 m/s) (p less than 0.03). From mild to moderate rejection, no further changes were noted in any echocardiographic indexes measured.(ABSTRACT TRUNCATED AT 250 WORDS)
- Subjects :
- Area fraction
Graft Rejection
Male
medicine.medical_specialty
Adolescent
Diastole
Ventricular Function, Left
Myocyte necrosis
Heart Rate
Internal medicine
Mitral valve
medicine
Humans
Radiology, Nuclear Medicine and imaging
Child
Ejection fraction
business.industry
Fractional shortening
Echocardiography, Doppler
medicine.anatomical_structure
Allograft rejection
Echocardiography
Child, Preschool
Cardiology
Heart Transplantation
Female
Cardiology and Cardiovascular Medicine
business
Isovolumic relaxation time
Subjects
Details
- ISSN :
- 08947317
- Volume :
- 5
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography
- Accession number :
- edsair.doi.dedup.....67d0d53bc89e5c28a549ac7d7e87a464