The structure that relays an electrical impulse from the SA node to the left atrium in a normal heart is the:
A. bundle of His.
B. Bachmann's bundle.
C. Purkinje network.
D. AV node.
Answer: B
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During working hours, be prepared to forego such accessories as
a. belts. b. jewelry. c. clear nail polish. d. nose rings.
You have been called for a 13-year-old boy who was caught sniffing glue by his parents. The boy is lethargic and confused and complaining of "burning" in his mouth and nose, as well as nausea and vomiting. Based on the clinical presentation and mechanism of illness, how has this poison affected the boy's brain?
A) Absorbing through the small intestine into the bloodstream and then on to the brain B) Directly contacting the brain by crossing the mucous membranes of the mouth and nose C) Crossing from the lungs into the bloodstream and then circulating to the brain D) Absorbing fumes through the skin, nose, and eyes and then on to the brain
After successfully rewarming a patient's frozen foot and frozen toes, the EMT should:
A) Cover the foot and toes with dry, sterile dressings B) Gently massage the foot and toes C) Ambulate the patient to ensure return of adequate motor function D) Place the foot below the level of the heart to enhance circulation
Which of the following identifies whether or not a treatment or procedure is covered by an insurance policy?
A. preauthorization B. predetermination C. coordination of benefits D. precertification