The four essential features of post-traumatic stress disorder include:
A) chronic confusion.
B) unexplained attraction to war memorabilia.
C) feelings of anger.
D) migration to crowds for security.
C
Health Professions
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In atrial fibrillation, what is the approximate atrial rate?
A. 100-300 bpm B. 300-600 bpm C. 400-800 bpm D. 200-400 bpm
Health Professions
Before you perform an ECG on your patient, he informs you that he has a pacemaker but isn't sure what kind. A portion of the ECG tracing is shown here. What type of pacemaker does this patient have? 
A. Ventricular pacemaker B. Atrial pacemaker C. AV pacemaker D. Atriobiventricular pacemaker
Health Professions