ATI RN
ATI Proctored Pharmacology Quizlet Questions
Question 1 of 5
A 32-year-old anesthesiology resident injects himself with ketamine after he is served with divorce papers from his wife. In addition to being suspended from his hospital because of his actions, he would likely exhibit which of the following behaviors?
Correct Answer: D
Rationale: Ketamine, an NMDA antagonist, causes dissociative anesthesia. Slurred speech is correct-users often exhibit altered speech, disorientation, and motor impairment. Hypersensitivity to pain contradicts ketamine's analgesia. Loss of consciousness occurs at high doses, but self-injection suggests sub-anesthetic use. Normal gait is unlikely due to ataxia. Tranquil affect (E) doesn't fit agitation or dissociation. Slurred speech reflects ketamine's CNS depression, consistent with abuse scenarios.
Question 2 of 5
Antifibrinolytic drugs:
Correct Answer: A
Rationale: Antifibrinolytic drugs work by inhibiting the activity of plasmin, an enzyme responsible for the breakdown of fibrin clots. By blocking the activation of plasminogen to form plasmin, these drugs help stabilize the formed fibrin clot, thus promoting hemostasis and preventing excessive bleeding. This mechanism is particularly useful in conditions where increased fibrinolysis is a concern, such as in surgical procedures or certain bleeding disorders. Examples of antifibrinolytic drugs include tranexamic acid and aminocaproic acid.
Question 3 of 5
While assessing a patient who is receiving intravenous digitalis, the nurse recognizes that the drug has a negative chronotropic effect. How would this drug effect be evident in the patient?
Correct Answer: B
Rationale: Digitalis has a negative chronotropic effect, meaning it slows down the heart rate. This can be evident in a patient by observing a decrease in their heart rate. Chronotropy refers to the heart rate or rhythm of the heart. Digitalis works by inhibiting the sodium-potassium pump in the heart muscle cells, leading to an increase in intracellular calcium levels. This results in a decreased heart rate and improved contractility of the heart muscle. Therefore, a decreased heart rate is the expected effect when a patient is receiving intravenous digitalis.
Question 4 of 5
A patient is mowing his lawn on a hot Saturday afternoon. He begins to notice chest pain. What should his first action be?
Correct Answer: B
Rationale: When a patient begins to experience chest pain, especially during physical activity like mowing the lawn on a hot day, the first action should be to stop the activity immediately and sit or lie down. This is because chest pain could be a sign of a serious issue like a heart attack. By stopping the physical activity and resting, the patient can help reduce the workload on the heart and potentially prevent further strain or damage. It is important to take chest pain seriously and seek medical attention promptly.
Question 5 of 5
In assessing a patient before administration of a cardiac glycoside, the nurse knows that which lab result can increase the toxicity of the drug?
Correct Answer: A
Rationale: Low potassium levels, known as hypokalemia, can increase the toxicity of cardiac glycosides such as digoxin. These drugs work by inhibiting the sodium-potassium pump in cardiac cells, leading to increased intracellular sodium levels. When potassium levels are low, it can worsen this effect and lead to increased risk of cardiac dysrhythmias and toxicity from the drug. Potassium levels should be carefully monitored in patients taking cardiac glycosides to prevent complications. A potassium level of 2.8 mEq/L is considered significantly low and would pose an increased risk of toxicity with cardiac glycoside use.