Ventricular ectopic activity and its relevance to aircrew licensing

Area of Science:

• Cardiology
• Aerospace Medicine
• Electrocardiography

Background:

• Ventricular ectopic complex (VEC) activity is common in both healthy individuals and those with cardiovascular disease.
• The predictive value of VECs for cardiovascular disease is debated, especially in asymptomatic individuals where they may be benign.

Purpose of the Study:

• To outline assessment guidelines for ventricular ectopic complexes in aviation license applicants.
• To differentiate between benign and potentially malignant VEC activity in the context of flight certification.

Main Methods:

• Review of electrocardiogram (ECG) findings, including unifocal VECs and complex ventricular activity.
• Consideration of further investigations such as exercise ECG and tape monitoring.
• Evaluation of criteria for aviation certification based on VEC characteristics.

Main Results:

• Unifocal VECs exceeding 2 per 100 on resting ECGs warrant further assessment for flight applicants.
• Complex VEC activity (multiformity, pairs, ventricular tachycardia, R-on-T, bigeminy, trigeminy, parasystole) is generally incompatible with certification.
• Bigeminal arrhythmias are considered relatively benign, while R-on-T beats and ventricular tachycardia are highly malignant.

Conclusions:

• Assessment of VECs in aviation applicants requires careful consideration of VEC type and frequency.
• Complex VEC activity poses significant risks and is largely disqualifying for flight certification.
• Further research into individual risk stratification for VECs is needed.