CCT - Certified Cardiographic Technician Exercise Stress Testing Questions and Answers 1 — Questions and Answers
Question 1: A 78-year-old sedentary female is referred for a symptom-limited exercise stress test. Which of the following treadmill protocols is most appropriate for this patient?
- Modified Bruce Protocol (Correct answer)
- Standard Bruce Protocol
- Astrand-Ryhming Protocol
- Pharmacologic (Dobutamine) Protocol
Correct answer: Modified Bruce Protocol
The Modified Bruce Protocol starts at a lower workload (slower speed and less incline) and has smaller increments between stages compared to the Standard Bruce Protocol. This makes it more suitable for elderly, deconditioned, or post-myocardial infarction patients who may not tolerate the more demanding initial stages of the standard protocol.
Question 2: Which of the following findings is considered an absolute indication to terminate an exercise stress test immediately?
- Frequent premature ventricular contractions (PVCs)
- Patient request to stop (Correct answer)
- Downsloping ST-segment depression of 2 mm
- Systolic blood pressure of 210 mmHg
Correct answer: Patient request to stop
According to AHA/ACC guidelines, a patient's request to stop is an absolute indication for terminating the test. While arrhythmias, ST depression, and hypertension are significant and may lead to test termination (often as relative indications), the patient's explicit desire to stop must be honored immediately.
Question 3: A 60-year-old male is scheduled for a maximal exercise stress test. Using the most common standard formula, what is his age-predicted maximum heart rate (MHR)?
- 170 bpm
- 150 bpm
- 160 bpm (Correct answer)
- 180 bpm
Correct answer: 160 bpm
The most widely used and simplest formula to estimate maximum heart rate is 220 minus the patient's age. For a 60-year-old patient, the calculation is 220 - 60 = 160 bpm.
Question 4: A CCT is preparing a patient for a treadmill stress test. To ensure a high-quality ECG tracing with minimal artifact, what is the most critical preparatory step?
- Placing the limb leads on the distal extremities
- Ensuring the room is slightly cool
- Instructing the patient to grip the handrails tightly
- Abrading the skin at electrode sites (Correct answer)
Correct answer: Abrading the skin at electrode sites
Proper skin preparation, which includes cleaning and abrading the stratum corneum, is crucial for reducing skin impedance. Lower impedance allows for a better electrical signal to reach the electrode, significantly minimizing motion and other artifacts that are common during exercise.
Question 5: During the recovery phase of an exercise stress test, continuous monitoring of the patient's ECG and vital signs is essential. For how long should this monitoring typically continue?
- Exactly 3 minutes post-exercise
- For at least 6-8 minutes, or until ECG changes and symptoms resolve (Correct answer)
- Until the heart rate returns to precisely the resting baseline rate
- For 1 minute for every stage of exercise completed
Correct answer: For at least 6-8 minutes, or until ECG changes and symptoms resolve
The post-exercise recovery period is diagnostically important, as some ischemic changes or arrhythmias may only appear after the exercise has stopped. Standard procedure is to monitor the patient for a minimum of 6-8 minutes, and potentially longer if ECG abnormalities or patient symptoms persist or worsen.
Question 6: A patient is being screened for an exercise stress test. Which of the following conditions, if present and symptomatic, represents an absolute contraindication to proceeding with the test?
- Controlled hypertension
- Previous coronary artery bypass surgery
- Severe aortic stenosis (Correct answer)
- History of stable angina
Correct answer: Severe aortic stenosis
Symptomatic severe aortic stenosis is an absolute contraindication for exercise stress testing. Exertion in these patients can critically restrict cardiac output, leading to syncope, severe ischemia, or sudden cardiac death. The other options are not absolute contraindications.
CCT - Certified Cardiographic Technician Exercise Stress Testing Questions and Answers 1
A 78-year-old sedentary female is referred for a symptom-limited exercise stress test.
Which of the following treadmill protocols is most appropriate for this patient?