Cardiac Function in Children After Kidney Transplant

Area of Science:

• Pediatric Cardiology
• Nephrology
• Transplant Medicine

Background:

• Renal transplant is known to improve cardiac function.
• Understanding the specific changes in ventricular function post-transplant is crucial for patient management.

Purpose of the Study:

• To assess the gradual changes in left and right ventricle systolic and diastolic functions in pediatric patients before and after renal transplantation.

Main Methods:

• Echocardiography, including Tissue Doppler imaging, was used to evaluate 30 pediatric kidney recipients.
• Measurements included Tei indices, tricuspid annular plane systolic excursion, and right ventricle systolic excursion velocity.
• Cardiac function was compared pre-transplant with early (6-12 months) and late (>1 year) post-transplant periods.

Main Results:

• Pre-transplant, left ventricle, right ventricle, and interventricular septal Tei indices were elevated, indicating dysfunction.
• Tricuspid annular plane systolic excursion and right ventricle systolic excursion velocity were abnormal in a significant portion of patients pre-transplant.
• Post-transplant, most ventricular function markers improved, though some Tei indices remained elevated, particularly for the right ventricle at late-term follow-up.

Conclusions:

• Systolic and diastolic ventricular dysfunction is common in pediatric renal transplant recipients, especially early post-transplant.
• These dysfunctions tend to decrease over time, indicating a positive impact of renal transplantation.
• Recovery of right ventricle function appears to be a slower process compared to the left ventricle.