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ECG

Source
Mnemonic ECG
Specimen Requirements
Specimen Handling
Additional Information Testing is performed at all Patient Service Centres.  Appointments are strongly recommended.
CLS does not distribute ECG reports for ECGs that have not been collected by Calgary Laboratory Services staff.

Electrocardiogram Protocol:
Please note that patients suspected of having an acute coronary syndrome or serious arrhythmia should be sent to the nearest hospital emergency department.

STAT ECGs are not available.  A Priority Interpretation (PI) is available for patients requiring an urgent report. PI ECG reporting will be available from our default reader within 2-3 hours.  If other cardiologist is designated to read PI ECG, reporting arrangements are the responsibility of the requesting physician.

ECG Escalation Process

Patients exhibiting any one of the following high risk interpretive phrases will automatically be escalated to a Priority Interpretation by our default reader:
  • ST elevation
  • Ventricular tachycardia
  • Supraventricular tachycardia
  • Complete AV block
  • Advanced AV block

A recommendation of immediate assessment by Emergency Medical Services (EMS) is provided to the patient if the patient also exhibits any of the following symptoms:

  • Upper back, jaw, arm, shoulder and/or chest pain
  • Shortness of breath
  • Presyncope (dizziness)
  • Heart rate <35 bpm

For more information, see Patients Having an ECG


RRL: If patients arrive at outpatient labs with CLS requisitions for ECG testing, refer the patient to their nearest Patient Service Centre.

Testing Location
Testing Frequency Daily
Alternate Name(s) EKG, Electrocardiogram
Reference Interval Not applicable.

For more information, contact the CLS Division Head for Clinical Pathology at 403-770-3756 or 1-800-661-3450.