Abstract
The systemic-to-pulmonary shunt (SPS) remains an important palliative therapy in many congenital heart defects. Unlike other surgical treatments, the mortality after shunt operations has risen. We used an audit dataset to investigate potential reasons for this change and to report national results. A total of 1993 patients classified in 13 diagnoses underwent an SPS procedure between 2000 and 2013. Indication trends by era and also results before repair or next stage are reported. A dynamic hazard model with competing risks and modulated renewal was used to determine predictors of outcomes. The usage of SPS in Tetralogy of Fallot (ToF) has significantly decreased in the last decade, with cases of single ventricle (SV) and pulmonary atresia (PA) with septal communication increasing (P < 0.001 for trends). This is correlated with an increase of early mortality from 5.1% in the first half of the decade to 9.8% in the latter (P = 0.007 for trend). At 1.5 years, 13.9% of patients have died, 17.8% had a shunt reintervention and 68.3% of patients are alive and reintervention-free. Low weight, PA-intact septum, SV and central shunt type are among the factors associated with increased mortality, whereas PA-ventricular septal defect, cor...Continue Reading
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