Abstract
Background: There is wide variation in recording of reperfusion times in the management of ST segment elevation acute coronary syndromes (ACS). We investigated factors that could predict time to reperfusion. Methods: Single-centre, retrospective study of all consecutive patients admitted for primary PCI from June 2009 to October 2010. Door-to-artery (D2A) and Door-to-balloon (D2B) times were calculated from times noted by cathlab. nurses and compared with times from digital recordings of PCI procedures. Predictors of time to reperfusion were identified by logistic regression. Results: 300 patients were included. Median (interquartile range) D2B time recorded by cathlab. nurses (D2B-CN) was 35.5 (24; 52) minutes, 32 (20; 51) min from PCI recordings (D2B-PCI). Average difference between D2B-CN and D2B-PCI was 6.2 min (P < 0.0001). Concordance of percent patients with a D2B time < 90 and < 45 min was mediocre, kappa coefficients 0.44 (95% CI: 0.10–0.79) and 0.68 (95% CI: 0.57–0.80) respectively. By multivariate analysis, older patients had longest D2A times (P = 0.04); patients with longest D2A and D2B times more frequently had elevated creatinine (P = 0.002 (D2A), P = 0.0003 (D2B). Organizational aspects did not influence reperfusion times. Conclusion: Data regarding reperfusion times are unreliable when recorded by nurses. Age and creatinine levels are significantly associated with reperfusion times, whereas organizational aspects are not.
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Declaration of interest: The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper.