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

NCLEX-PN

Nclex Exam Cram Practice Questions

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

A. renal failure
B. psoriasis
C. lupus
D. cirrhosis

Correct answer: D

Rationale: Cirrhosis is the correct answer. In cirrhosis, the liver is unable to detoxify ammonia to urea, leading to an accumulation of ammonia in the blood. This can result in hepatic encephalopathy, a condition characterized by high ammonia levels affecting brain function. Renal failure (Choice A), psoriasis (Choice B), and lupus (Choice C) are not directly associated with an increased risk of high ammonia levels as seen in cirrhosis.

2. Which of the following isoenzymes is elevated in a client who has had a myocardial infarction?

A. CPK-BB
B. CPK-MM
C. CPK-MB
D. CPK-MI

Correct answer: C

Rationale: CPK-MB is the correct answer as it is elevated in clients who have had a myocardial infarction. CPK-BB is elevated in clients with brain damage, and CPK-MM is elevated in clients with skeletal muscle damage. CPK-MI, mentioned in the rationale, does not exist, making it an incorrect choice.

3. Which of the following tasks are appropriate for an LPN to perform?

A. Adjusting the cervical traction device of a 68-year-old client as instructed by the charge nurse.
B. performing operation on a woman in labour
C. Assessing a 36-year-old man newly admitted for chest pain.
D. Obtaining an occult blood sample from a 16-year-old client with ulcerative colitis.

Correct answer: D

Rationale: Tasks appropriate for an LPN to perform include teaching, obtaining samples, and documenting. LPNs can educate clients on care practices, such as teaching a new mother how to care for her baby. Obtaining samples, like an occult blood sample, falls within the scope of an LPN's responsibilities. Assessments, especially initial assessments, should be conducted by a registered nurse or physician, making option C incorrect. Adjusting devices like a cervical traction device should be done based on direct orders from prescribing providers, not charge nurses, making option A inappropriate for an LPN's role.

4. When should the biohazard emblem be affixed to containers according to the orientation nurse educator reviewing the biohazard legend with a class of new employees?

A. when there is presence of blood and body fluids.
B. when there is the need for droplet precautions.
C. when there is contact isolation.
D. when there is the potential for airborne transmission.

Correct answer: A

Rationale: The correct answer is 'when there is presence of blood and body fluids.' When handling body substances like blood and body fluids, the risk of transmission of infections increases. Federal regulations mandate warning labels on containers to alert employees and waste collectors. The biohazard emblem consists of a three-ring symbol overlaying a central concentric ring. Blood, wound drainage, feces, and urine are examples of body fluids that can transmit infections and diseases to others. The other choices, B, C, and D, are incorrect because the presence of the biohazard emblem is specifically linked to the handling of blood and body fluids, not to droplet precautions, contact isolation, or airborne transmission.

5. How should an infant be secured in a car?

A. To hold the infant while sitting in the middle of the back seat of the car
B. To place the infant in the front seat in a rear-facing infant safety seat if the car has passenger-side air bags
C. To place the infant in a booster seat in the front seat with the shoulder and lap belts secured around the infant
D. To secure the infant in the middle of the back seat in a rear-facing infant safety seat

Correct answer: D

Rationale: The recommended way to secure an infant in a car is to place them in the middle of the back seat in a rear-facing infant safety seat. Option A is incorrect because infants should never be held while in a moving vehicle due to safety concerns. Option B is incorrect because placing an infant in the front seat with a rear-facing safety seat can be risky if the car has passenger-side airbags. Option C is incorrect as booster seats are not suitable for infants. Therefore, the correct choice is to secure the infant in the middle of the back seat in a rear-facing infant safety seat.