Heart valves serve what purpose?
A) They prevent oxygenated blood from flowing through the coronary arteries.
B) They control the heart's electrical signals.
C) They prevent blood from flowing forward.
D) They prevent backflow of blood.
D
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Hormones are the chemical transmitters that regulate all of the following EXCEPT _________
a. sexual function in females only b. sexual function in males and females c. metabolism d. tissue function
In a patient with extreme hypothermia who appears to be in cardiac arrest, you should assess the pulse for how long?
A) 30 to 45 seconds B) 20 to 30 seconds C) 15 to 20 seconds D) 5 to 10 seconds
Which of the following is NOT one of the three methods of venipuncture?
A. Vacuum tube method B. Caterpillar method C. Syringe and needle method D. Butterfly method
You assess an unresponsive 65-year-old man and find that he is apneic and pulseless. The patient's wife tells you that he has an automatic implanted cardioverter/defibrillator. After initiating CPR, you should:
A) deactivate the implanted defibrillator by running a magnet over it. B) apply the AED as soon as possible and analyze his cardiac rhythm. C) ask the wife why and when he had the automatic defibrillator implanted. D) avoid using the AED because the implanted defibrillator is more effective.