STEMI First Medical Contact to Device Time Goals
For STEMI patients transported directly to a PCI-capable hospital, the goal is FMC-to-device time ≤90 minutes; for patients transferred from a non-PCI facility, the goal is ≤120 minutes. 1, 2
Direct Transport to PCI-Capable Hospital
When EMS transports a STEMI patient directly to a PCI-capable hospital, the system goal is an FMC-to-device time of 90 minutes or less (Class I, Level of Evidence: B). 1 This represents the ideal timeframe from when the patient first encounters medical personnel (whether in the field or at hospital arrival) until coronary reperfusion is achieved.
The 2025 ACC/AHA/ACEP/NAEMSP/SCAI guidelines reinforce this 90-minute target, noting that each 30-minute delay increases the relative risk of 1-year mortality by 7.5%. 2 Real-world data shows that only about 60% of patients presenting directly to PCI-capable hospitals actually achieve this goal, with significant institutional variability. 3
Transfer from Non-PCI-Capable Hospital
For patients who initially present to or are transported to a non-PCI-capable hospital, the FMC-to-device time goal extends to 120 minutes or less (Class I, Level of Evidence: B). 1 This accounts for the additional time required for:
- Door-in-door-out (DIDO) time at the referring facility: ≤30 minutes 1
- EMS transport time to the PCI-capable center
- Door-to-balloon time at the receiving facility
The guidelines emphasize that if the anticipated FMC-to-device time will exceed 120 minutes due to unavoidable delays, fibrinolytic therapy should be administered at the non-PCI-capable hospital (within 30 minutes of arrival) rather than pursuing transfer for primary PCI. 1
Critical Implementation Points
These are system-level goals, not absolute cutoffs. The guidelines explicitly state that "for any individual patient, every effort should be made to provide reperfusion therapy as rapidly as possible." 1 This means:
- Don't delay treatment to meet arbitrary time windows
- Faster is always better—the goals represent maximum acceptable times, not targets to aim for
- In cardiogenic shock or severe heart failure, proceed with PCI irrespective of time delay 1
Real-World Performance and Mortality Impact
Recent registry data reveals sobering realities about achieving these goals:
- Only 59.5% of direct presentations and 50.3% of transfers meet their respective time goals 3
- Failure to meet FMC-to-device goals is associated with more than doubled in-hospital mortality (aOR 2.21 for direct presentations, aOR 2.44 for transfers) 3
- Rural EMS patients who don't receive PCI within 90 minutes have four times higher mortality 4
- Women are significantly less likely to meet time goals compared to men (45.5% vs 69.8%), representing an important disparity 5
System Optimization Strategies
To achieve these goals, the guidelines recommend several system-level interventions:
- Prehospital catheterization lab activation by EMS (associated with lower mortality) 2
- ED bypass protocols for direct transport to catheterization lab 2
- Single-call transfer protocols for patients at non-PCI facilities 2
- Focus on reducing ED dwell time, which contributes most to delays 6, 7
The median DIDO time in successful systems is approximately 53 minutes, with EMS transport adding another 9 minutes, highlighting where improvement efforts should focus. 8