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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.
Abstract:
Interventional cardiologists are held accountable for delay in the door-to-balloon time (DBT) for patients undergoing primary percutaneous coronary intervention in the setting of ST-elevation myocardial infarction (STEMI) even though in the chain of STEMI activation, the interventional cardiologist is the last person that needs to be available to start angiography. The goal of our study is to conduct a thorough analysis of the DBT data to assess time delays by randomly evaluating two consecutive years at the University of Arizona Medical Center (UAMC). We evaluated all available DBT data for STEMIs occurring in the fiscal years of 2011 and 2012 at the UAMC and calculated the time needed for the cardiologist to start the procedure after the patient was ready in the cardiac catheterization laboratory called time to start the procedure (TSP) in addition to other time intervals. Mean TSP time was 4 minutes and 24 seconds, one of the shortest time delays in the chain of STEMI activation and DBT. The median TSP delay was 3 minutes. The longest delay interval was the STEMI team's arrival to with a mean of 17 minutes and 38 seconds. Our data are the first to evaluate delays related to DBT revealing the least delay occurring due to the late arrival of Interventional cardiologists. Our data emphasizes the importance of performing a detailed time analysis of the DBT.
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