PCCN Pharmacology & Pain Management

Question 1

A patient receiving morphine sulfate IV begins to experience respiratory depression. What is the most appropriate immediate intervention?

Accepted Answer

Administer naloxone

Answer

Morphine sulfate is an opioid analgesic, and respiratory depression is a serious adverse effect. Naloxone is an opioid antagonist that rapidly reverses the effects of opioids by competing for receptor sites. Administering naloxone is the immediate and most appropriate intervention to counteract life-threatening respiratory depression.

Question 2

Which of the following medications is classified as a beta-1 selective blocker and commonly used in heart failure management?

Accepted Answer

Metoprolol

Answer

Metoprolol is a beta-1 selective blocker, meaning it primarily blocks beta-1 adrenergic receptors in the heart, reducing heart rate and myocardial contractility. This action helps to decrease myocardial oxygen demand and is beneficial in managing heart failure. Propranolol, carvedilol, and labetalol are non-selective or have additional alpha-blocking properties.

Question 3

What is the primary concern when administering IV potassium chloride to a patient?

Accepted Answer

Arrhythmias

Answer

Administering IV potassium chloride too rapidly or in excessive amounts can lead to hyperkalemia, which significantly affects cardiac electrical activity. This can cause life-threatening arrhythmias, including bradycardia, heart block, and even cardiac arrest. Therefore, it must be administered slowly and carefully, often diluted, with close cardiac monitoring.

Question 4

A patient is prescribed a fentanyl patch for chronic pain. Which of the following instructions is most important?

Accepted Answer

Avoid exposing the patch to heat

Answer

Fentanyl patches release medication systemically, and heat (from heating pads, hot baths, or fever) can significantly increase the rate of fentanyl absorption. This accelerated absorption can lead to dangerously high serum fentanyl levels, increasing the risk of severe respiratory depression and overdose. Patients must be educated to avoid heat exposure to the patch.

Question 5

Which drug is commonly used for sedation in mechanically ventilated patients and has both anxiolytic and amnestic effects?

Accepted Answer

Midazolam

Answer

Midazolam is a short-acting benzodiazepine commonly used for sedation in mechanically ventilated patients due to its rapid onset and relatively short duration of action. It provides both anxiolytic (anxiety-reducing) and amnestic (memory-impairing) effects, which are beneficial for patient comfort and tolerance of mechanical ventilation. Other options have different primary uses or side effect profiles.

PCCN Exam Practice Test

PCCN Exam Practice Test

PCCN Pharmacology & Pain Management