Certified EkG technician (CET) Practice Exam

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What can an increased amplitude of the QRS complex suggest in an EKG tracing?

Heart failure
Ventricular hypertrophy
Myocardial infarction
Atrial fibrillation

The correct answer is: Ventricular hypertrophy

An increased amplitude of the QRS complex in an EKG tracing typically suggests ventricular hypertrophy. This condition occurs when the heart’s ventricles thicken, often in response to increased workload resulting from conditions such as high blood pressure or valve disease. The thicker muscle requires a stronger electrical signal to depolarize, leading to the observed increase in QRS amplitude on the EKG. This is important for diagnosis, as it can indicate the heart's adaptation to sustained stress or changes in hemodynamic demands. Monitoring the QRS complex's amplitude helps healthcare professionals understand the cardiac condition and decide on further diagnostic testing or treatment options.