Medical errors: The performance gap in hypoplastic left heart syndrome and physiologic equivalents?

Abstract

The frequency and impact of medical errors during staged palliation are unknown. All patients with hypoplastic left heart syndrome and physiologic equivalents (N=191) who underwent staged palliation (2001-2011) were studied. Stage 1, interstage, and stage 2 were reviewed to identify diagnostic, technical, judgment, and management errors. The impact of errors on transplant-free survival was examined by parametric competing risks and risk-adjusted regressions using bootstrapping. Stage 1 (N=191) errors (n=111, 58%) were common and predominantly intraoperative (n=84, 44%) or postoperative (n=43, 23%). Postoperative errors were determinants of death/transplant (hazard ratio, 1.7; P=.01), whereas technical errors (n=65, 34%) were not, but they delayed recovery and discharge (extra 24 days approximately, P=.0024). Postoperative stage 1 errors led to decrements in total strategy success of approximately 30% (78% vs 48%, P=.004). Stage 2 (N=134) errors (n=66, 49%) were common. Intraoperative errors were the most prevalent (n=61, 46%) but did not compromise survival. Postoperative errors (n=11, 8%) were determinants of death/transplant (hazard ratio, 2.4; P<.0001). Interstage errors (n=21, 16%) led to twice the intensive care unit stay (16 vs 7 days, P<.0001) and hospital stay (30 vs 17 days, P<.02) after stage 2. Overall, a child presenting with ideal morphology and managed with no postoperative errors at stage 1 or 2 would have a predicted late survival in excess of 80%. Technical errors are common and delay recovery. Their effects on survival are mitigated. Intraoperative judgment errors are associated with strategy failure in a univariate model and lead to increased postoperative errors in a multivariate model. Postoperative errors are independently associated with a decrease in univentricular strategy survival.