A nurse is reviewing the effects of adrenergic drugs on the body. The nurse demonstrates understanding of this group of drugs by identifying that which of the following would occur if the drug stimulates beta-1 receptors?
A) Vasoconstriction of peripheral blood vessels
B) Decreased gastrointestinal tract secretions
C) Increased force of myocardial contractions
D) Bronchodilation
Ans: C
Feedback:
Stimulation of beta-1 receptors leads to an increase in heart rate and an increase in the force of myocardial contraction. Peripheral vasoconstriction occurs when alpha-1 receptors are stimulated. Decreased gastrointestinal motility and secretions occur when alpha-2 receptors are stimulated. Bronchodilation occurs when beta-2 receptors are stimulated.
You might also like to view...
Change the following to a decimal
1.25% = _____
A patient is scheduled for a procedure to test mental function at 6 a.m. At 3 a.m. the patient requests something for sleep. What is the nurse's best response?
a. "I'll call your prescriber and request an order for something to help you sleep." b. "Your prescriber has ordered temazepam (Restoril). I will give you a dose now." c. "I'm sorry, but there is not enough time for sleep now before your procedure." d. "I'm sorry, but you already received a dose of temazepam last evening at 9."
The nurse is assisting with a physical examination on a child who has been admitted with a diagnosis of possible child abuse
Which finding should alert the nurse to the possibility that the child may have been abused? A) The child has a fractured bone B) The child has bruises on the knees and elbows C) The child is hyperactive and angry D) The child has a burn that has not been treated
The nurse teaches a patient to self-administer insulin. How can the nurse best evaluate whether the patient understands the instructions?
a. Observe as the patient prepares and injects a dose of insulin. b. Have the patient list the steps of the procedure for insulin administration. c. Ask the patient an open-ended question about feelings related to the procedure. d. Ask the patient to repeat the information in the insulin pamphlet that was provided.