HESI RN
HESI Pharmacology Practice Exam
1. Intravenous heparin therapy is prescribed for a client. While implementing this prescription, a nurse ensures that which of the following medications is available on the nursing unit?
- A. Protamine sulfate
- B. Potassium chloride
- C. Phytonadione (vitamin K)
- D. Aminocaproic acid (Amicar)
Correct answer: A
Rationale: Protamine sulfate is the antidote for heparin, working to reverse its effects in case of excessive bleeding. It should be readily available when administering heparin to manage any potential bleeding complications effectively. Potassium chloride is not the antidote for heparin and is typically used to correct low potassium levels. Phytonadione (vitamin K) is used to reverse the effects of warfarin, not heparin. Aminocaproic acid (Amicar) is used to treat or prevent excessive bleeding but is not the antidote for heparin.
2. A client with portosystemic encephalopathy is receiving oral lactulose (Chronulac) daily. The nurse assesses which of the following to determine medication effectiveness?
- A. Lung sounds
- B. Blood pressure
- C. Blood ammonia level
- D. Serum potassium level
Correct answer: C
Rationale: In portosystemic encephalopathy, the liver's ability to detoxify ammonia is impaired, leading to elevated blood ammonia levels, which can cause neurological symptoms such as encephalopathy. Lactulose is given to reduce ammonia levels by promoting its excretion through the bowel. Therefore, assessing the blood ammonia level is crucial to determine the effectiveness of lactulose therapy in managing portosystemic encephalopathy.
3. A client is learning how to mix regular insulin and NPH insulin in the same syringe. Which action, if performed by the client, indicates the need for further teaching?
- A. Withdraws the NPH insulin first
- B. Withdraws the regular insulin first
- C. Injects air into the NPH insulin vial first
- D. Injects an amount of air equal to the desired dose of insulin into the vial
Correct answer: A
Rationale: When mixing regular insulin with another insulin preparation, it is crucial to withdraw the regular insulin first to prevent contamination. NPH insulin should be drawn after the regular insulin to maintain the integrity of each insulin type. Therefore, if the client withdraws the NPH insulin first, it indicates the need for further teaching. Choice B is correct as withdrawing regular insulin first is the appropriate step. Choice C is incorrect as air should be injected into the vial containing the regular insulin to maintain pressure. Choice D is incorrect as injecting air equal to the desired dose of insulin into the vial is a correct step in preparing the insulin for withdrawal.
4. The nurse provides medication instructions to an older hypertensive client who is taking 20 mg of lisinopril (Prinivil, Zestril) orally daily. The nurse evaluates the need for further teaching when the client states which of the following?
- A. I can skip a dose once a week.
- B. I need to change my position slowly.
- C. I take the pill after breakfast each day.
- D. If I get a bad headache, I should call my doctor immediately.
Correct answer: A
Rationale: Lisinopril should be taken daily as prescribed and not skipped. Skipping doses can lead to ineffective treatment.
5. Rifabutin (Mycobutin) is prescribed for a client with active Mycobacterium avium complex (MAC) disease and tuberculosis. The nurse monitors for which side effects of the medication? Select one that doesn't apply.
- A. Signs of hepatitis
- B. Flu-like syndrome
- C. Low neutrophil count
- D. Vitamin B6 deficiency
Correct answer: D
Rationale: Rifabutin is known to cause side effects such as hepatitis, flu-like syndrome, low neutrophil count, and ocular pain or blurred vision. Vitamin B6 deficiency is not associated with rifabutin but is a side effect of isoniazid (INH). Therefore, the nurse should not monitor for Vitamin B6 deficiency when administering rifabutin.
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