Syncope/presyncope triage workflow

Scope

Use for

Initial adult syncope/presyncope assessment after immediate resuscitation needs have been addressed.

Not for

• Persistent unstable vitals or active emergency management situations.
• Complex inpatient syncope protocols requiring monitored admission workflows.

Immediate actions

• Obtain a witness history where possible: posture, trigger, prodrome, loss-of-consciousness duration, movements, recovery, and injury. Persistent confusion suggests a mimic or complication.
• Check vital signs, cardiovascular/neurologic examination, and a 12-lead ECG; measure supine and standing blood pressure/pulse when safe and clinically relevant.
• Review medications, bleeding/volume loss, cardiac disease, and family history of premature sudden death; order glucose, hemoglobin, or other tests only when indicated.

Red flags: escalate now

If any of these are present, stop routine steps and follow the urgency stated. Activate emergency care for instability or findings that need immediate transfer.

• Activate emergency care for persistent hypotension, ongoing chest pain/dyspnea, serious arrhythmia, major injury/bleeding, focal neurologic deficit, or failure to recover normally.
• Urgent cardiac assessment is needed for exertional/supine syncope, absent prodrome with cardiac concern, abnormal ECG, structural heart disease, or a family history of sudden death. Use ED if prompt safe assessment cannot be secured.

First-line plan

• A typical vasovagal trigger/prodrome with full recovery and reassuring examination/ECG may be managed as an outpatient; explain trigger avoidance and address volume depletion or medication contributors.
• Do not routinely order brain imaging, EEG, or broad laboratory panels for uncomplicated syncope without a specific indication.
• Document driving and hazardous-work advice according to the suspected cause and current provincial licensing guidance; do not infer clearance from a risk calculator.

Follow-up and monitoring

• Set prompt follow-up for unexplained or recurrent events, including rhythm monitoring/referral when indicated.
• Give clear emergency precautions for recurrence with injury, chest symptoms, abnormal recovery, or neurologic findings.

Before the patient leaves

Return precautions you can say as written:

“If symptoms get worse, new warning signs appear, or you cannot follow the plan from this visit, seek urgent care now.”

• Point to the red flags above that apply to this patient.
• Confirm follow-up timing and where to go after hours.
• Attach a relevant handout to reinforce the plan.
• Document disposition, rationale, unresolved uncertainty, and that precautions were understood.

About this workflow

Clinical owner

Family Medicine Editorial Team

Risk tier

High

Review cadence

Every 3 months

Last reviewed

September 4, 2026AI-assisted evidence review. Clinical-owner sign-off is not recorded for this update.

Review status

Evidence current. Next review due December 4, 2026.

References

• CCS 2020 clinical practice update on syncope (opens in a new tab)
• ACC/AHA/HRS Syncope evaluation recommendations (opens in a new tab)
• NICE Transient loss of consciousness initial assessment (opens in a new tab)