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  • Title: Primary surgical repair of tetralogy of fallot at the Uganda Heart Institute: a ten-year review of 30day mortality and morbidity.
    Author: Khainza RE, Oketcho M, Aliku T, Namuyonga J, Ndagire E, Mwambu T, Muhoozi RM, Obongnyinge B, Tumwebaze H, Mbabazi N, Akech T, Nakato A, Killen A, Ofumbi GO, Lwabi P, Omagino J, Lubega S.
    Journal: BMC Cardiovasc Disord; 2024 Jun 26; 24(1):322. PubMed ID: 38918721.
    Abstract:
    BACKGROUND: Tetralogy of Fallot (TOF) is the most common form of cyanotic congenital heart disease (CHD) worldwide. It accounts for 7% of CHD cases in Uganda and leads to fatal outcomes in the long term without surgery. Surgery is often delayed in developing countries like Uganda due to limited resources. OBJECTIVE: This study aimed to determine the early surgical outcomes of patients with TOF who underwent primary intracardiac repair at the Uganda Heart Institute (UHI) and to identify factors associated. METHODOLOGY: This retrospective chart review evaluated outcomes of primary TOF repair patients at UHI from February 2012 to October 2022. Patient outcomes were assessed from surgery until 30 days post-operation. RESULTS: Out of the 104 patients who underwent primary TOF repair at UHI, records of 88 patients (84.6%) were available for review. Males accounted for 48.9% (n = 43). The median age at the time of operation was 4 years (with an interquartile range of 2.5-8.0 years), ranging from 9 months to 16 years. Genetic syndromes were present in 5/88 (5.7%). These included 2 patients with trisomy 21, 2 with Noonan's, and 1 with 22q11.2 deletion syndrome. Early postoperative outcomes for patients included: residual ventricular septal defects in 35/88 (39.8%), right ventricular dysfunction in 33/88 (37.5%), residual pulmonary regurgitation in 27/88 (30.7%), residual right ventricular outflow tract obstruction in 27/88 (30.0%), pleural effusion in 24/88 (27.3%), arrhythmias in 24/88(27.3%), post-operative infections in 23/88(26.1%) and left ventricular systolic dysfunction in 9/88 (10.2%). Out of the children who underwent surgery after one year of age, 8% (7 children) died within the first 30 days. There was a correlation between mortality and post-operative ventilation time, cardiopulmonary bypass (CPB) time, aortic cross-clamp time, preoperative oxygen saturations, RV and LV dysfunction and the operating team. CONCLUSION: The most frequent outcomes after surgery were residual ventricular septal defects and right ventricular failure. In our study, the 30-day mortality rate following TOF repair was 8%. Deceased patients had lower pre-operative oxygen levels, longer CPB and cross-clamp times, longer post-operative ventilation, RV/LV dysfunction, and were more likely operated by the local team.
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