For a driver with a history of heart failure, which condition may prevent certification?

The condition that prevents certification for a driver with a history of heart failure is having a left ventricular ejection fraction (LVEF) of less than 50% combined with episodes of ventricular tachycardia. This scenario raises significant safety concerns, as these factors indicate compromised heart function and an increased risk for serious cardiac events. The FMCSA guidelines stipulate that drivers should have an LVEF of at least 50% to be considered for certification, especially when accompanied by symptoms such as tachycardia, which can lead to fainting or sudden cardiac arrest.

In contrast, the other options present conditions that are more favorable for driver certification. Having an LVEF over 50% with no symptoms suggests that the heart is functioning within acceptable limits, and there are no reported cardiac issues. Normal ECG readings indicate the absence of electrical disturbances in the heart, which is vital for safe driving. Lastly, having no previous incidents of chest pain suggests a lower risk of acute coronary events, further supporting the driver’s potential for certification. Together, these factors illustrate why the first option is the most concerning in the context of FMCSA guidelines.