The class I antidysrhythmic drugs block sodium channels. However, the nurse needs to realize that class I drugs have different actions. Which category of class I antidysrhythmic drugs accele-rates repolarization?
a. Class IA
b. Class IB
c. Class IC
d. Class IA and IB
B
Only class IB drugs increase repolarization.
Class IA drugs delay repolarization.
Class IC drugs prolong prodysrhythmic actions.
Class IA drugs delay repolarization; class IB drugs increase repolarization.
You might also like to view...
A patient has a disease resulting in a deficit of acetylcholinesterase. What effects will the patient experience?
A) Increased rapidity of neural transmission B) Reversed direction of neural transmission C) Rapid resetting of postsynaptic membrane receptors D) Delayed resetting of postsynaptic membrane receptors
A client having difficulty sleeping asks the nurse what the complications of sleep deprivation might be. Which topic will the nurse include when responding to the client?
A) Fatigue occurring at night B) Auditory hallucinations C) Improved wound healing D) Development of Alzheimer's disease
What type of wound would the nurse expect to find in a patient who has a wound healing by primary intention?
A) A surgical wound with a large amount of exudate B) A large abraded area that is infected C) A pressure ulcer with pink granulation tissue in the wound bed D) A surgical wound that is clean and well-approximated
A 52-year-old male suffered a myocardial infarction secondary to atherosclerosis and ischemia. Once blood flow is returned to the damaged heart, reperfusion injury occurs as a result of:
a. oxidation stress. b. vacuolation. c. decreased intracellular calcium. d. lipid acceptor proteins.