Which of the following is used to diagnose ulcers, diverticulosis, tumors, and motility problems of the esophagus, stomach, duodenum, and small intestine?
A. Retrograde pyelogram
B. Myelography
C. KUB radiography
D. Barium swallow
E. Cholangiography
Answer: D
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Which of the following would cause an increased level of exhaled CO2?
a. Hyperthermia b. Pulmonary embolism c. Cardiac arrest d. Bronchospasm
While cleaning the ambulance following an emergency call, you find a syringe and a needle that were used by the paramedic to give a patient an injection. What is the proper way to dispose of used syringes and needles?
A) Recap the needle, and dispose of it in the garbage B) Remove the needle from the syringe, and dispose of it in the trash C) Bend the needle, and then dispose of it in a special garbage bag at the hospital D) Place the syringe and needle in a special puncture-resistant container
Identify the following rhythm: 
A. Atrial fibrillation B. Wandering atrial pacemaker C. Multifocal atrial tachycardia D. Atrial flutter
Which of the foliowing BEST describes a "standard"?
A. A set of criteria developed by trade unions that are recognized as "best practices" B. A set ofprinciples, protocols, or procedures that is developed by committees through a consensus process C. A set of general guidelines that have been used by practitioners for a number of years and become common practice D. A collection or compilation of rules and regulations enacted by a legislative body to become law in a particular jurisdiction