ITimeliness & access

Door-to-ECG time (chest pain)

How fast a patient with chest pain gets a 12-lead ECG after walking through the door. It is the very first link in the STEMI chain — if this is slow, every downstream time (door-to-needle, door-to-balloon) is already lost.

Capture & escalation pipeline

From chest pain at the door to a timestamped ECG — and what happens when the 10-minute target is missed.

How it’s measured

Numerator: Patients presenting with chest pain or an anginal equivalent who have a 12-lead ECG recorded within 10 minutes of ED arrival.
Denominator: All patients presenting to the ED with chest pain or suspected acute coronary syndrome.
Formula: (Numerator ÷ Denominator) × 100, reported alongside the median door-to-ECG time in minutes.
Unit: % within 10 min (and median minutes)

Target

India

India: NABH tracks door-to-ECG as a core ED quality indicator; aim for ≥90% of chest-pain patients with an ECG within 10 minutes of arrival.

Global

International: AHA/ACC and RCEM: a 12-lead ECG within 10 minutes of arrival for any patient with suspected ACS.

Report the median, not just the average — a few very fast ECGs can hide a long tail of dangerous delays.

Who does what

The clinical chain of responsibility at the bedside.

Registration / triage clerk	Records the exact door (arrival) timestamp. This is the clock-start; if it is wrong, the whole indicator is wrong.
Triage nurse	Recognises chest pain at first contact, assigns a red/priority band, and orders the ECG immediately under standing protocol — without waiting for a doctor.
ECG technician / staff nurse	Performs and timestamps the 12-lead ECG within 10 minutes.
Treating doctor	Interprets the ECG within 10 minutes and, if STEMI, activates thrombolysis or the cath-lab pathway.

What to capture & how it’s automated

Who captures it

Triage nurse (arrival + complaint) and the ECG technician/nurse (ECG time).

What is captured

Two timestamps — ED arrival time and ECG-acquired time — plus the presenting complaint, so the chest-pain denominator can be built.

Manual reality

Arrival time is written on the casualty/OPD slip; the ECG time is hand-written on the ECG strip or in the triage register. Both are then transcribed during a monthly audit. This is the reality in most Indian EDs and is error-prone because two different clocks (registration vs ECG machine) rarely agree.

Automated in real life

The HMIS registration timestamp is the arrival time; a network-connected ECG machine prints its own clock time and pushes the trace into the EMR. Best practice is a triage screen that, when 'chest pain' is selected, starts a visible 10-minute countdown and logs the ECG time automatically — removing transcription entirely and keeping the machine clock NTP-synced to the HMIS.

Who in the hospital is involved

Beyond the bedside — the functions that make capture and improvement happen.

Quality cell / QI nurse	Runs the monthly door-to-ECG audit, charts the median and the >10-minute tail, and feeds it back to the ED team.
Medical records / HIM	Extracts arrival and ECG timestamps and builds the chest-pain denominator from triage complaints or ICD coding.
IT	Keeps the ECG machine clock synced to the HMIS, configures the timestamp capture, and automates the monthly report.
Biomedical engineering	Maintains ECG-machine uptime and the time-sync — a machine with a wrong clock silently corrupts every reading.
ED nurse manager	Ensures an ECG machine and a trained hand are physically at triage every shift, and that the standing order is honoured.
Cardiology	Closes the loop on activations — confirms whether fast ECGs actually shortened reperfusion.

Why it affects performance

Door-to-ECG is the first measurable step in the chest-pain pathway and a NABH-reviewed indicator. A slow ECG pushes out every downstream metric, so improving it lifts door-to-needle and door-to-balloon at the same time. It is also one of the cleanest signals of whether triage is actually working.

Why it affects patient care

An unrecognised STEMI sitting in the waiting room is a preventable death. Time is myocardium — every block of delay to reperfusion raises mortality and heart-failure risk. A fast ECG is what turns 'chest pain in the queue' into 'STEMI on the pathway'.

Capture pitfalls & gaming to watch for

Registration clock and ECG-machine clock not synced — produces impossible or back-dated times that make the data meaningless.
Recording 'arrival' at triage instead of at the door, which quietly shrinks the measured delay.
Counting only confirmed STEMIs in the denominator — the indicator is about all chest pain, not just the ones that turned out positive.
Hand-writing the ECG time after the fact ('it was about 9 minutes'), which launders real delays into compliant numbers.

What actually moves the number

Put an ECG machine and a trained nurse/technician at triage, not in a back room.
Standing order: triage nurse performs the ECG on any chest pain immediately, before the doctor sees the patient.
Enable automatic time-stamp printing on the ECG and sync all clocks to one source.
Display a live 10-minute countdown for chest-pain patients on the triage/tracking screen.
Feed the median time and the >10-minute cases back to the team every month — visible data is what moves behaviour.

References

Freely citable

Compiled from contemporary emergency-medicine quality practice and freely citable accreditation and guideline standards. Educational use only.