EKG Technician Practice Test

Updated October 27, 2026

1. (Acquisition) Where is lead V6 placed?
   A.4th intercostal space, right sternal borderB.5th intercostal space, left midclavicular lineC.Left anterior axillary lineD.Left midaxillary line, at the same level as V4
2. (Interpretation) A regular rhythm at 48 beats per minute with normal P waves, PR interval and QRS is:
   A.Sinus bradycardiaB.Normal sinus rhythmC.Sinus tachycardiaD.Atrial fibrillation
3. (Acquisition) Thick, regular, evenly spaced lines on the tracing are most likely caused by:
   A.Muscle tremorB.Electrical (AC) interferenceC.A loose electrodeD.Breathing movement
4. (Safety) Before the EKG, the technician should identify the patient using:
   A.Their room numberB.Their bed number and diagnosisC.At least two identifiers, such as full name and date of birthD.The name on the door
5. (Interpretation) What does the T wave represent?
   A.Ventricular repolarizationB.Atrial depolarizationC.Ventricular depolarizationD.The AV node delay
6. (Acquisition) How many electrodes are used for a standard 12-lead EKG?
   A.6B.12C.10D.3
7. (Interpretation) In a 6-second strip of an irregular rhythm, there are 8 QRS complexes. What is the approximate heart rate?
   A.48 beats per minuteB.60 beats per minuteC.68 beats per minuteD.80 beats per minute