ANS Questions Flashcards
What occurs when a drug binds to a receptor in the body?
A. It alters the receptor to become nonresponsive to its usual endogenous molecules.
B. It increases or decreases the activity of that receptor.
C. It gives the receptor a new function.
D. It prevents the action of the receptor by altering its response to chemical mediators.
B. It increases or decreases the activity of that receptor.
The nurse administers a medication to a patient that stimulates the function of the parasympathetic nervous system. The nurse should assess the patient for which intended effect? A. Reduced esophageal motility B. Improved bladder emptying C. Dilation of the pupils D. Decreased gastric secretions
B. Improved bladder emptying
A nurse administers a medication that activates dopamine receptors. The nurse should assess the patient for which intended effect? A. Uterine muscle relaxation B. Contraction of skeletal muscle C. Improved renal perfusion D. Decreased piloerection
C. Improved renal perfusion
The nurse teaches a patient about Bethanechol, a muscarinic agonist. Which statement by the patient requires an intervention by the nurse?
A. “Urgency may occur, so I should be near a bathroom.”
B. “I should avoid the use of beta-blockers in future.”
C. “This drug may cause an increase in my blood pressure.”
C. “This drug may cause an increase in my blood pressure.”
A patient is prescribed Bethanechol, a muscarinic agonist, for urinary retention. If the patient exhibits signs of an overdose, such as increased salivation and sweating, bradycardia, or hypotension, which medication should the nurse administer?
A. Nicotine
B. Atropine
B. Atropine
When teaching a nursing student about an antagonist, which statement would the nurse include in their teaching?
A. An antagonist destroys a receptor.
B. An antagonist avoids receptors.
C. An antagonist prevents receptor activation.
D. An antagonist improves receptor sensitivity.
C
The nurse knows that the advantage of patients having multiple types of receptors to regulate bodily functions is what?
A. Reduction of side effects and toxicity
B. Higher degree of specificity
C. Lower therapeutic index
D. Improved maximal efficacy
A
Phenylephrine, an alpha-1 agonist, is contained in many nasal decongestant products. Which action contributes to its therapeutic effect? A. Vasoconstriction B. Vasodilation C. Bronchoconstriction D. Bronchodilation
A
The nurse is preparing to give bethanechol, a muscarinic agonist. Which patient response is an expected outcome of this drug?
A. Oxygenation improves because of bronchodilation.
B. Wheezing decreases due to bronchodilation.
C. Heart rate decreases to 60 beats/min.
D. Diarrhea stool count decreases.
C
A man is placed on prazosin, an alpha-1 antagonist, for hypertension. Which adverse effect is most likely to result from taking this drug? A. Postural hypotension B. Rebound hypertension C. Urinary retention D. Bradycardia
A
A nurse is preparing to give a medication that stimulates the beta2 receptors. Which response will the nurse expect from this drug? A. Increased peristalsis B. Hypoglycemia C. Bronchodilation D. Constriction of the pupil
C
A nursing student asks the nurse about receptor specificity of adrenergic agonist medications. What will the nurse say? A. “As the dosage of these medications increases, drugs in this class are more selective.” B. “Dopamine is selective for dopamine receptors and has no effects on alpha or beta receptors.” C. “Epinephrine is the most selective alpha-adrenergic agonist medication.” D. “Specificity is relative and is dose dependent.”
D
A patient is receiving dopamine for treatment of shock. What would indicate to the nurse that the medication is effective? A. Decreased mean arterial pressure B. Gain of 2 kg in 24 hours C. Increased heart rate D. Increased urine output
D
A pregnant patient with diabetes and hypertension is given terbutaline to delay preterm labor. Which side effect might the nurse expect? Select all that apply. A. Bronchospasm B. Decreased urine output C. Hyperglycemia D. Increased heart rate E. Decreased BP
A-D
Which adverse effect(s) may result from administration of bethanechol? Select all that apply. A. Drooling B. Urinary retention C. Pupil constriction D. Tachycardia E. Diarrhea
A,C,E
The nurse is administering isoproterenol, a beta1 and beta2 agonist. The nurse understands activation of these two receptors will result in which expected drug effects? Select all that apply. A. Increased force of heart contraction B. Increased heart rate C. Decreased glucose levels D. Bronchial dilation E. Excessive drowsiness F. Decreased cardiac output
A,B,D
Which receptors are considered adrenergic receptors? Select all that apply. A. Beta2 B. Alpha2 C. Muscarinic1 D. Alpha1 E. Dopamine F. Beta1
A,B,D,E,F
Which receptors mediate responses to the neurotransmitter acetylcholine? Select all that apply. A. Alpha1 B. Nicotinic C. Muscarinic D. Dopamine E. Beta2
B,C
A nurse prepares to administer a new prescription for bethanechol, a muscarinic agonist. Which information in the patient’s history should prompt the nurse to consult with the prescriber before giving the drug? A. Hypertension B. Constipation C. Psoriasis D. Asthma
D
The nurse is caring for a group of patients who are all receiving anticholinergic drugs. In which patient is an anticholinergic drug contraindicated?
A. A 60-year-old woman with an overactive bladder
B. A 26-year-old man being prepared for surgery today
C. A 72-year-old man with glaucoma
D. A 45-year-old woman with peptic ulcer disease
C
The nurse is reviewing drugs on the emergency cart with regard to their therapeutic action. Which medications can help initiate heart contraction during a cardiac arrest? A. Subcutaneous terbutaline B. Topical phenylephrine C. Intravenous epinephrine D. Inhaled albuterol
C
The nurse in the cardiac care unit is caring for a patient receiving epinephrine. Which assessment criterion takes priority in the monitoring for adverse effects of this drug? A. Blood urea nitrogen B. Cardiac rhythm C. Central nervous system (CNS) tremor D. Lung sounds
B
The nurse is caring for several patients prescribed propranolol. In which patient condition is propranolol contraindicated? A. Hypertension B. Cardiac dysrhythmias C. Diabetes D. Angina
C
