"Confirmed STEMI" = registry final diagnosis within each impression bucket — I21.3's rate reads as field accuracy, I20.9's as the under-triage signal. Secondary-impression audit (eSituation.12) is in the Excel report — Impression Audit tab.
Time Benchmarks — EMS-anchored scored · hospital clocks reported descriptively
Benchmark
Source
N
Median
Avg
P90
Target (min)
≤ Target
Symptom Onset → FMC
EMS
23
165.0
143.7
218.8
—
—
FMC → First 12-Lead ECG
EMS
30
12.0
12.3
20.1
≤10
40.0%
FMC → Cath Lab Activation
EMS
38
26.5
27.6
42.3
—
—
Depart Scene → Hospital Arrival
EMS
36
23.5
23.0
31.0
—
—
FMC → PCI (first device)
EMS+Hosp
36
99.5
99.2
126.5
≤90
30.6%
Hospital-internal clocks: Hospital Arrival → First ED ECG · Hospital Arrival → Cath Lab Activation · Door → Balloon (PCI) — available with the hospital data integration (separate report).
How the Clocks Are Measured
FMC: First Medical Contact (FMC) = arrival of the FIRST EMS unit on scene, including non-transporting first responders (e.g. a fire engine) — not the transporting ambulance.
Benchmark
Clock starts
Clock stops
Source
Target
Symptom Onset → FMC
Symptom onset (patient / witness report)
First EMS unit on scene (incl. non-transporting)
EMS
—
FMC → First 12-Lead ECG
First EMS unit on scene (incl. non-transporting)
First prehospital 12-lead acquired
EMS
≤10 min
FMC → Cath Lab Activation
First EMS unit on scene (incl. non-transporting)
Cath lab activation
EMS
—
Depart Scene → Hospital Arrival
Transport unit departs scene
Receiving hospital arrival
EMS
—
FMC → PCI (first device)
First EMS unit on scene (incl. non-transporting)
First device deployment in cath lab
EMS+Hosp
≤90 min
EMS Arrival vs Walk-in
Arrived by EMS — 24 patients
Confirmed STEMI17 (70.8%)
PCI performed16 (66.7%)
STEMI alert activated15 (62.5%)
FMC → ECG median12.0 min
Survival91.7%
Walk-in / Other — 17 patients
Confirmed STEMI14 (82.4%)
PCI performed13 (76.5%)
STEMI alert activated0 (0.0%)
FMC → ECG median12.0 min
Survival100.0%
Discharge Medication Compliance
Statin at discharge (STEMI survivors) — target 90%28 of 30 (93.3%)
Beta blocker at discharge (STEMI survivors) — target 90%27 of 30 (90.0%)
Aspirin within 24h of arrival (all)39 of 41 (95.1%)
Statin/beta-blocker measured among STEMI survivors only.
Facility Performance — 2026-1Q
Facility
Patients
STEMI
PCI %
Alert Compliance
FMC→PCI Median
≤90 min
Survival
Demo County Medical Center
27
20
70.4%
83.3%
94.0
37.5%
96.3%
Riverside Regional Hospital
7
6
71.4%
100.0%
105.0
16.7%
100.0%
St. Mary's Medical Center
7
5
71.4%
100.0%
97.5
16.7%
85.7%
SYSTEM
41
31
70.7%
88.2%
99.5
30.6%
95.1%
Trend charts:
STEMI vs NSTEMI Trend
22
6
2025-3Q
31
8
2025-4Q
31
8
2026-1Q
15
4
Jan 2026
10
3
Feb 2026
6
1
Mar 2026
STEMI
NSTEMI
Case inclusion: 41 of 64 records qualify (emergency response · ED destination · transported by this unit · specialty primary impression) — excluded: 6 response type, 1 destination, 4 transport, 12 impression · Benchmark anchors, targets, and the FMC definition are configured in stemi_config.py (section 4) ·
Data source: Hospital Registry Export · Generated by PCRTrend