When the cardiac muscle cell is stimulated, the cell is said to _____
a. polarize
b. recover
c. depolarize
d. repolarize
C
The movement of charged particles across a cell membrane causing the inside of the cell to become positive is called depolarization. Depolarization must take place before the heart can mechanically contract and pump blood.
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The nurse has admitted a patient to the ED following a fall from a first-floor hotel balcony. The patient is 22 years old and smells of alcohol. The patient begins to vomit in the ED. Which of the following interventions is most appropriate?
a. Insert an oral airway to prevent aspiration and to protect the airway. b. Offer the patient an emesis basin so that you can measure the amount of emesis. c. Prepare to suction the oropharynx while maintaining cervical spine immobilization. d. Send a specimen of the emesis to the laboratory for analysis of blood alcohol content.
During fetal development, several factors can affect the outcome of bone development. All of the following influence the development except:
1. Fifth's disease. 2. Exposure to cat feces. 3. Caffeine consumption. 4. Contaminated water.
Which should the nurse recognize are adverse effects associated with digoxin (Lanoxin)?
A. Tachycardia and hypotension B. Blurred vision and tachycardia C. Anorexia and nausea D. Anorexia and constipation
A nurse in the emergency room suspects intimate partner violence (IPV) after examining a client. Another nurse questions how often this occurs. Which response by the nurse would be most accurate?
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