Syncope While Driving and the Risk of a Subsequent Motor Vehicle Crash

Area of Science:

• Neurology
• Public Health
• Traffic Safety

Background:

• Syncope (fainting) while driving poses a significant risk for motor vehicle crashes.
• The long-term crash risk for drivers with a prior syncope-related crash is not well-established.

Purpose of the Study:

• To determine if individuals with a prior syncope-related crash have an increased risk of subsequent crashes.
• To investigate the association between crash-associated syncope and future driving accidents.

Main Methods:

• A population-based retrospective observational study was conducted using data from British Columbia, Canada (2010-2015).
• Patients diagnosed with syncope and collapse were identified from emergency department visits.
• Crash-free survival was compared between drivers with crash-associated syncope and controls with syncope alone.

Main Results:

• In the year post-visit, 21% of drivers with crash-associated syncope and 9% of controls experienced a subsequent crash.
• Crash-associated syncope was not significantly linked to an increased risk of subsequent crashes (aHR 1.38).
• Drivers with crash-associated syncope were more likely to have driving advice documented (PR 31.0); however, those without documented advice had a higher subsequent crash risk (aHR 1.88).

Conclusions:

• The overall risk of subsequent crashes after syncope-associated crashes appears similar to that after syncope alone.
• Documented physician driving advice is crucial for mitigating crash risk in syncope patients.
• Further research into driving restrictions and advice for syncope patients is warranted.