Incidence and Type of Right Ventricular Diastolic Dysfunction in Postoperative Tetralogy of Fallot Pediatric Patients

Abstract

Objective: Assessment of right ventricular (RV) diastolic function in postoperative Tetralogy of Fallot (TOF) patients is not routinely done during intermediate follow-up. We have done this study to assess the incidence and type of RV diastolic dysfunction in these patients. Method: Ninety patients who were less than 18 years and underwent total correction for TOF were analyzed in this study. The incidence and type of RV diastolic dysfunction was measured and the effect of degree of pulmonary regurgitation on RV diastolic function was also seen. Results: The total number of patients with RV diastolic dysfunction was 46 (51.1%). Restrictive RV physiology was seen in 8 patients (8.8%) and the most common type of RV diastolic dysfunction seen was pseudonormal filling, seen in 23 (25.6%) patients. Conclusion: Subclinical RV diastolic dysfunction is present in almost half of the postoperative TOF patients of pediatric age group. The most prevalent form of diastolic dysfunction was pseudonormal filling during intermediate follow-up.