Major Delay in Door-to-Ballon Time for Primary Percutaneous Coronary Intervention is Not Related to Interventional

Mohammad R Movahed1,2, Rana Irilouzadian1

  • 1Department of Medicine, University of Arizona Sarver Heart Center, College of Medicine, Tucson, Arizona.

Insights

Interventional cardiologists are not the cause of delays in door-to-balloon time (DBT) for ST-elevation myocardial infarction (STEMI) patients. Our study found the longest delays occurred before the interventional cardiologist was involved.

Area of Science:

  • Cardiology
  • Healthcare Management

Background:

  • Door-to-balloon time (DBT) is a critical metric for ST-elevation myocardial infarction (STEMI) treatment.
  • Interventional cardiologists are often held accountable for DBT delays, despite their position late in the STEMI activation chain.

Purpose of the Study:

  • To analyze DBT data and identify specific time delays within the STEMI activation process.
  • To assess the contribution of interventional cardiologist availability to overall DBT.

Main Methods:

  • Retrospective analysis of DBT data from STEMI cases at the University of Arizona Medical Center (UAMC) over two fiscal years (2011-2012).
  • Calculation of 'time to start procedure' (TSP) for interventional cardiologists and other time intervals within the DBT pathway.

Main Results:

  • The mean TSP for interventional cardiologists was 4 minutes and 24 seconds, indicating minimal delay.
  • The longest delay was observed in the STEMI team's arrival, averaging 17 minutes and 38 seconds.
  • This study is the first to demonstrate that interventional cardiologist arrival is not the primary cause of DBT delays.

Conclusions:

  • Interventional cardiologists are not the main source of delays in achieving optimal door-to-balloon times for STEMI patients.
  • Focusing on earlier stages of the STEMI activation pathway, such as team arrival, is crucial for improving DBT.
  • Detailed time analysis of the DBT process is essential for accurate identification of bottlenecks.

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