CCT Practice Questions (2026) — Free Sample Questions with Answers

Answer: A

Remove the cart from service, tag it, and use another machine: Correct. Damaged insulation or a compromised ground creates a leakage-current and shock hazard; the unit must be tagged out and reported to biomedical engineering.

Straighten the ground pin and record the ECG on battery power: Field repairs are not allowed and battery use does not fix a damaged cord; the device still needs inspection.

Use a two-prong adapter so the plug fits the wall outlet: Defeating the ground removes protection against leakage current and increases shock risk.

Wrap the cracked area with tape and report it after the test: Tape is not an approved repair, and using damaged equipment exposes the patient to electrical hazard.

Damaged cords, missing ground pins or adapters are electrical safety hazards: remove from service, tag, report to biomed and use a safe unit.

Answer: B

Right chest, mirroring V4–V6 at the fifth intercostal space: That describes right-sided leads (V4R–V6R), used for right ventricular infarction.

Left back at the V6 level: posterior axillary, midscapular and paraspinal lines: Correct. V7 = left posterior axillary line, V8 = left midscapular line (tip of scapula), V9 = left paraspinal border, all at the horizontal level of V6.

Left back one intercostal space above V6, from spine out to the axilla: Posterior leads are placed in the same horizontal plane as V6, and V7 is lateral, not next to the spine.

Right back at the V6 level: paraspinal, midscapular and axillary lines: Posterior leads V7–V9 are on the left back, continuing from V6 around the left side.

V7–V9 continue V6's horizontal line around the left back: posterior axillary (V7), midscapular (V8), left paraspinal (V9).

Answer: C

Left bundle branch block: LBBB shows a broad, mostly negative QS or rS in V1 and broad, notched R waves in I and V6, not an rSR'.

Left anterior fascicular block: LAFB causes left axis deviation with a normal-width QRS, not a 0.14-sec QRS with rSR' in V1.

Right bundle branch block: Correct. QRS 0.12 sec or more, rSR' ('rabbit ears') in V1 and a wide terminal S in I and V6 are the RBBB criteria.

Wolff-Parkinson-White pattern: WPW shows a short PR and a delta wave slurring the start of the QRS, not a terminal rSR'.

Wide QRS: look at V1. Terminal R' (rSR') = RBBB; deep, broad negative QRS = LBBB.

Answer: B

Systolic BP rising from 128 to 176 mmHg during Stage 3: A progressive rise in systolic pressure with workload is the normal response.

Sustained ventricular tachycardia appearing on the monitor: Correct. Sustained VT is an absolute indication to terminate exercise; alert the supervising clinician immediately.

Isolated unifocal PVCs appearing during Stage 2: Occasional isolated PVCs are common during exercise and are not an indication to stop.

1 mm rapidly upsloping ST depression at peak exercise: Upsloping ST depression of this size is a common nondiagnostic finding; horizontal or downsloping depression over 2 mm is a relative indication.

Absolute stop criteria include sustained VT, ST elevation of 1 mm or more in non-Q leads (not V1/aVR), SBP drop over 10 mmHg with ischemia, moderate-to-severe angina, CNS symptoms, poor perfusion, technical failure and the patient's wish to stop.

Answer: A

Installing a fresh battery and confirming recording on all channels: Correct. Verifying power and an active, clean signal on every channel before the patient leaves is the key pre-application function check.

Telling the patient to keep the activity diary next to the recorder: The diary is important for symptom correlation but does not affect how long the device records.

Shaving and abrading the skin more firmly at each electrode site: Skin prep improves signal quality and adhesion but does not cause the recorder itself to stop.

Placing the electrodes over the ribs instead of soft tissue areas: Bony placement reduces motion artifact but does not keep the recorder powered and recording.

Before hookup: new battery (or full charge), correct patient data and start time, and a hookup check showing a clean signal on each channel; after return, confirm full-duration data.

Answer: B

Sinus tachycardia: Sinus tachycardia has one upright P wave before each QRS, not sawtooth waves at twice the ventricular rate.

Atrial flutter with 2:1 conduction: Correct. Sawtooth flutter waves near 300/min, with every second wave conducted, give a regular ventricular rate around 150.

Atrial fibrillation with rapid response: Atrial fibrillation is irregularly irregular with chaotic fibrillatory waves, not organized sawtooth waves.

Multifocal atrial tachycardia: MAT is irregular with at least three distinct P-wave shapes.

A regular narrow rhythm at about 150 should prompt a search for hidden flutter waves (best seen in II, III, aVF and V1).