Sunday, April 28, 2024: 11:22 AM - 11:29 AM
7 Minutes
Metro Toronto Convention Center
Room: Room 716
Objective: Studies have evaluated factors that enhance or derail progression through the single ventricle palliation pathway. The impacts of placing Blalock-Taussig-Thomas (BTT) shunts following superior cavopulmonary connection (SCPC), in patients who require additional pulmonary blood flow, remain to be delineated. This study evaluates the midterm outcomes of BTT shunts following SCPC, informally referred to as the turbo Glenn, on progression to Fontan circulation and transplant-free survival.
Methods: This is a retrospective analysis that selected single ventricle patients from 2004-2022 who had undergone a Norwood procedure and progressed to stage 2 palliation with SPCP. We compared isolated SCPC to SCPC followed by BTT shunt (turbo Glenn) in the early postoperative period. Primary outcomes were achievement of Fontan circulation and transplant-free survival. Secondary outcomes were the incidence of postoperative complications, timing of turbo Glenn, and length of hospital stay. Patients who underwent initial hybrid operations with comprehensive stage 2 palliation were excluded.
Results: 154 patients were included with 14 (9.1%) turbo Glenns and 140 (90.9%) standard SCPC. Cardiopulmonary bypass times were longer in patients (66.9 ± 32.6 vs 91.9 ± 45.9 minutes, p=0.04) who ultimately required a turbo Glenn and 100% of the turbo Glenns were unplanned reoperations. The median time to turbo Glenn following SCPC was 2 days [IQT 0.5, 3.8]. There were similar interstage durations, preoperative oxygen saturations (SpO2), inhaled oxygen requirements, pulmonary artery z-scores, and pulmonary to systemic ratios between the groups (all, p>0.05). However, postoperative SpO2 was substantially lower in the turbo Glenn group with higher inhaled nitric oxide requirements (all, p<0.05). There were higher rates of SCPC take-down in the turbo Glenn group (21.4% vs 5.0%, p=0.04). Yet, the incidence of all complications were similar (all, p>0.05). The rates of mortality, heart transplantation, and progression to Fontan circulation were also similar (all, p>0.05). However, hospital LOS was longer in the turbo Glenn group (10 [IQR 6, 19] vs 19.5 [14.5, 37] days, p=0.009.
Conclusion: When compared to patients who undergo isolated SCPC, a turbo Glenn, in patients who require additional pulmonary blood flow, is a viable option for early postoperative rescue with similar rates of progression to Fontan circulation, Glenn takedown, and transplant-free survival.
Authors
Laura Seese (1), Carlos Diaz Castrillon (2), Melita Viegas (3), mario castro-medina (3), Luciana Da Fonseca da Silva (4), Jose Da Silva (4), Victor Morell (2)
Institutions
(1) University of Pittsburgh Medical Center, Pittsburgh, PA, (2) Children's Hospital of Pittsburgh, Pittsburgh, PA, (3) N/A, Pittsburgh, PA, (4) UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA
You will have a 4 minute presentation followed by 3 minutes of discussion from the audience. All presenters must adhere to the presentation and discussion times provided. The AATS will begin to play music once your speaking time is exceeded.