what is the expected pharmacological action of propranolol

ATI RN

Proctored Pharmacology ATI

1. What is the expected pharmacological action of propranolol?

A. Block stimulation of beta1 receptors
B. Alter water and electrolyte transport in the large intestine
C. Block stimulation of beta2 receptors
D. Both A and C are correct

Correct answer: D

Rationale: Propranolol exerts its pharmacological action by blocking stimulation of both beta1 and beta2 receptors. By doing so, it leads to decreased heart rate and blood pressure. Therefore, both options A and C are correct as propranolol affects both types of beta receptors. Choice B is incorrect as propranolol does not alter water and electrolyte transport in the large intestine.

2. A client is receiving discharge teaching for a new prescription of Fluoxetine for PTSD. Which of the following statements should be included in the teaching?

A. You may experience a decreased desire for intimacy while taking this medication.
B. You should take this medication in the evening to help promote sleep.
C. You may experience fewer urinary adverse effects if you urinate just before taking this medication.
D. You should wear sunglasses when outdoors due to the light sensitivity caused by this medication.

Correct answer: A

Rationale: One of the potential adverse effects of fluoxetine and other SSRIs is a decreased libido, which can impact intimacy. It is essential for the nurse to educate the client about this possible side effect to promote awareness and understanding of the medication's effects.

3. What is the therapeutic use of metformin?

A. Lower blood pressure
B. Diminish seizure activity
C. The maintenance of a person's blood glucose levels
D. Increase heart rate and decrease gastrointestinal secretions

Correct answer: C

Rationale: Metformin is commonly prescribed to manage and control blood glucose levels in individuals with diabetes. It helps in reducing the amount of glucose produced by the liver and improves the body's response to insulin, thereby aiding in the regulation of blood sugar levels. It is not used to lower blood pressure, diminish seizure activity, increase heart rate, or decrease gastrointestinal secretions.

4. A client in the operating room received a dose of Succinylcholine. During the operation, the client suddenly develops rigidity, and their body temperature begins to rise. The healthcare provider should anticipate a prescription for which of the following medications?

A. Neostigmine
B. Naloxone
C. Dantrolene
D. Vecuronium

Correct answer: C

Rationale: Muscle rigidity and a sudden rise in temperature are manifestations of malignant hyperthermia. Dantrolene acts on skeletal muscles to reduce metabolic activity and treat malignant hyperthermia effectively. Neostigmine (choice A) is used to reverse the effects of non-depolarizing neuromuscular blockers, not to treat malignant hyperthermia. Naloxone (choice B) is an opioid antagonist used for opioid overdose. Vecuronium (choice D) is a non-depolarizing neuromuscular blocker and is not used to treat malignant hyperthermia.

5. When should a blood sample be obtained for a peak serum level of gentamicin when administered by IV infusion for 1 hour at 0900?

A. 1000
B. 1030
C. 1100
D. 1130

Correct answer: B

Rationale: The nurse should obtain the blood sample for the peak serum level at 1030. This timing allows for 30 minutes to elapse after the completion of the 1-hour IV infusion, which is the recommended window for obtaining the peak serum level of gentamicin.