“Register and Roll”: A Novel Initiative to Improve First Door-to-Balloon Time in ST Elevation Myocardial Infarction

Table 2

Reduction of time intervals by the register and roll initiative (median time intervals).

Outcome (in minutes)	Pre (𝑛=74)	Post (𝑛=70)	Significance
Median time to ECG (interquartile range)	5 (3–9)	1.5 (1–4)	𝑃<0.01
Median time ECG to transfer (IQR)	44 (34–57)	24 (25–41)	𝑃<0.01
Median time EMS activation to arrival (IQR)	8 (5–10)	7 (4–9)	𝑃<0.10
Median time to transfer (IQR)	51 (39–70)	26.5 (17–36)	𝑃<0.01
Median transport time (IQR)	26 (21–30)	30 (25–41)	𝑃=0.09
Median time to balloon (IQR)	34 (27–44)	29 (23–36)	𝑃<0.01
Median 1st door-to-Balloon time (IQR)	114 (102–139)	89.5 (83–100)	𝑃<0.01

Notes: Time ECG to transfer included EMS activation after first diagnostic EKG, EMS arrival, and the patient leaving the primary hospital. Time to transfer included the patient’s arrival to the first hospital and leaving the first hospital (door-in-door-out time).