in evaluating the lab work of a client in a hepatic coma which of the following lab tests is most important
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NCLEX-PN

Nclex Exam Cram Practice Questions

1. When evaluating the lab work of a client in hepatic coma, which of the following lab tests is most important?

Correct answer: C

Rationale: When a client is in hepatic coma due to liver failure, the liver cannot metabolize amino acids completely, leading to elevated ammonia levels. Increased ammonia can cause brain-tissue irritation, worsening the coma. Therefore, monitoring serum ammonia levels is crucial in assessing the severity of hepatic coma. Choices A, B, and D are less relevant in the context of hepatic coma. Blood urea nitrogen primarily assesses kidney function, serum calcium levels are not directly related to hepatic coma, and serum creatinine is more indicative of kidney function rather than liver function in this scenario.

2. While observing a client using crutches for a leg injury, which action would indicate a need for more education by the LPN?

Correct answer: B

Rationale: The correct answer is B. Resting the axilla on the top padding can cause nerve damage; instead, the client should place the top padding 1-2 inches below the axilla with a firm grip on the handles for proper support and stability while using crutches. Having a slight bend in the elbow when using the handles (choice C) is a correct technique to ensure proper weight distribution. Leading with the uninjured leg when going down the stairs (choice D) is the correct way to maintain balance and prevent further injury to the injured leg. Therefore, choice B indicates a need for more education to prevent potential nerve damage and ensure safe crutch use.

3. A client with which of the following conditions is at risk for developing a high ammonia level?

Correct answer: D

Rationale: A client with cirrhosis is at risk for developing a high ammonia level due to impaired liver function. The liver normally converts ammonia into urea for excretion. In cirrhosis, this process is compromised, leading to elevated ammonia levels in the blood. Renal failure, psoriasis, and lupus do not typically cause high ammonia levels. Renal failure affects kidney function, while psoriasis and lupus are autoimmune conditions that do not directly impact ammonia metabolism.

4. A nurse is planning client assignments for the day. Which task should the nurse assign to the nursing assistant (unlicensed assistive personnel)?

Correct answer: A

Rationale: The nurse is legally responsible for client assignments and must assign tasks based on state nursing practice act guidelines and job descriptions provided by the employing agency. The nursing assistant is trained to measure, collect, and strain urine, making recording urinary output for a client with renal calculi a suitable task for the nursing assistant. This task falls within the nursing assistant's role description. Dressing change instructions for a client who had a mastectomy involve a higher level of skill and knowledge, beyond the scope of a nursing assistant. Reporting abnormal lab values to the health care provider for a client scheduled for a laparoscopic cholecystectomy requires interpretation and clinical judgment, which is typically not within the nursing assistant's role. Preprocedural teaching for a client scheduled for a cardiac stress test involves providing detailed information and education, which is usually the responsibility of a licensed nurse or other qualified healthcare provider.

5. What is the most appropriate feeding method for a client who is unable to swallow?

Correct answer: B

Rationale: Nasogastric feedings are the most appropriate feeding method for a client who is unable to swallow. Providing nothing by mouth can lead to nutritional deficiencies, while clear liquids might cause aspiration. Total parenteral nutrition is not necessary if the gastrointestinal tract is functional. Nasogastric feedings are preferred as they can safely provide nutrition without the risks associated with not eating or aspirating.

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