Abstract

LAFUENTE, María V. et al. Total Right Heart Bypass: Long-Term Complications and Survival. Rev. argent. cardiol. [online]. 2013, vol.81, n.5, pp.400-407. ISSN 1850-3748.

Introduction Total right heart bypass (RHB) is a palliative procedure with high incidence of complications. Early recognition and individualization of these complications is crucial to define adequate therapeutic strategies. Objective To evaluate the incidence of events and mortality of total RHB during long-term follow-up and compare the atriopulmonary (AP) technique with the extracardiac conduit (EC). Methods Between 1987 and 2010, 191 patients undergoing total RHB with a mean follow-up (X) of 6.5 ± 5 years (1-20 years) after surgery were analyzed. The patients were divided, according to the surgical approach, in group I: A P, 39 patients, X=14 years and group II: EC, 152 patients, X=4 years. Results The following complications were present in 57% (n = 116) of the patients: Global long-term mortality was 4.6% (n = 9). At univariate analysis, mortality was associated with ventricular dysfunction (p=0.0000), protein-losing enteropathy (p=0.0000), atrial flutter (p=0.0012), reoperations (p=0.0006), sub-aortic stenosis (p=0.0024), thrombosis (p =0.01) and AP technique (p=0.0004). Multivariate analysis revealed that mortality was associated with ventricular dysfunction [OR 27.7 (4.64-165.24); p = 0.0003], AP technique [OR 2.5 (16.2-105.9); p = 0.0036] and protein-losing enteropathy [OR 9.31 (1.53-56.66); p = 0.01]. Conclusions - Adverse events were present in 57% of patients undergoing total RHB during long-term follow-up. - Long-term mortality was associated with ventricular dysfunction, atrial flutter, protein-losing enteropathy, sub-aortic stenosis, reoperations, thrombosis and atriopulmonary technique. - Ventricular dysfunction, protein-losing enteropathy and atriopulmonary technique were predictors of mortality.

Keywords : Congenital Heart Defects; Single Ventricle; Cardiovascular Surgical Procedures; Fontan-Kreutzer Procedure; Postoperative Follow-up.