Patients with SS have a high overall survival. Survival probability was lower in patients with associated CHDs and in patients with pulmonary hypertension. Surgical treatment of SS is beneficial in reducing symptoms, however, given the significant risk of post-operative scimitar drainage stenosis/occlusion, it should be tailored to a comprehensive haemodynamic evaluation and to the patient's age.
Results from this study showed good outcomes and an acceptable complication rate with both valve choices. Given the significantly increased risk of early and late death in younger children receiving smaller mechanical valves, the Ross procedure confers survival advantage in this age group at the expense of increased reoperation risk, especially in patients with a rheumatic cause.
The ECMO is valuable in patients with SV however results depend on anatomy, procedure, and support indication. Persistent markers of poor perfusion, end-organ injury, and prolonged ECMO duration are associated with mortality. Those factors could be modified by early ECMO application before organ damage, meticulous homeostasis to ensure adequate perfusion, early diagnosis, and reoperation on residual lesions to expedite weaning.
Despite established selection criteria and improved surgical technique and medical management, there is a continuous failure and attrition risk following BCPC. Outcomes are influenced by underlying cardiac anomaly; patients with dominant left ventricle (i.e. tricuspid atresia, double inlet left ventricle) having the best survival while those with dominant right ventricle (i.e. hypoplastic left heart syndrome, double outlet right ventricle with heterotaxy) having the worst survival. Increased PVR remains a significant factor affecting mortality.
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