The EMT-B should consider performing 2 minutes of CPR prior to attaching the AED to adult victims of cardiac arrest when
A. the arrest is caused by a traumatic injury
B. the patient's cardiac arrest was witnessed
C. the call-to-arrival time is more than 5 minutes.
D. the patient has known coronary artery disease
Ans: C. the call-to-arrival time is more than 5 minutes.
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You arrive on the scene of a motor vehicle collision and are presented with a patient complaining of chest pain after striking his chest on the steering wheel. On scene Emergency Medical Responders (EMRs) are maintaining cervical immobilization manually. He is alert and oriented and has a patent airway. His respirations are 24 with good chest rise and fall, and his skin is warm and dry. His heart
rate is 96 and SpO2 92% on room air. At this time you should: A) apply a cervical spine immobilization collar. B) provide supplemental oxygen. C) obtain a blood pressure and medical history. D) start positive pressure ventilation.
When a phosphor is struck by an x-ray photon, it will emit light
a. parallel to the angle of incidence. b. perpendicular to the angle of incidence. c. at a 45-degree angle to the angle of incidence. d. in all directions.