Which of the following x-ray procedures increases the radiographer's risk of exposure to ionizing radiation compared to radiography?
1. Mobile C-arm fluoroscopy
2. Interventional procedures that use high level control fluoroscopy
3. Mobile radiographic examinations
a. 1 and 2 only
b. 1 and 3 only
c. 2 and 3 only
d. 1, 2, and 3
d. 1, 2, and 3
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You are first on the scene of a two-car motor vehicle collision. In one car there are two patients entrapped in the vehicle, while in the other, there is a male driver complaining of chest pain. Your primary concern is:
A) triaging the patients. B) calling for additional help. C) assuring personal safety. D) determining severity of injuries.
You have performed an ECG on a patient, resulting in the following ECG tracing. How would you classify the patient's rhythm? 
A. Sinus dysrhythmia B. Normal sinus rhythm C. Sinus bradycardia D. Sinus tachycardia