manual hematocrits are done

NCLEX-RN

NCLEX RN Predictor Exam

1. When are manual hematocrits done?

A. to monitor anemia
B. by using a microhematocrit tube.
C. to measure the percentage of plasma to cells.
D. All of the above.

Correct answer: D

Rationale: Manual hematocrits are performed to monitor anemia, which involves measuring the percentage of red blood cells in the blood. The process involves collecting blood in a microhematocrit tube, then centrifuging it to separate the plasma from the cells. By measuring the ratio of plasma to cells, healthcare providers can assess the patient's hematocrit level. Therefore, all the provided options are correct as they collectively describe the purpose and procedure of manual hematocrits.

2. A client is about to have a TENS unit attached for pain relief. Which of the following actions is most appropriate in this situation?

A. Inform the client that he may experience tingling sensations.
B. Connect the TENS unit before the client goes to bed for the night.
C. Inform the client that the TENS unit may have pain-reducing effects for 10 to 15 days.
D. After treatment, inform the client that he may not use a TENS unit again for at least 2 weeks.

Correct answer: A

Rationale: When attaching a TENS unit for pain relief, it is essential to inform the client that he may experience tingling sensations. This is a common sensation experienced when using a TENS unit, but it should not cause muscle twitching. The therapeutic effects of a TENS unit usually last between 3 to 5 days. Choice B is incorrect because there is no specific recommendation to connect the TENS unit before bedtime. Choice C is incorrect as stating that the TENS unit may have pain-reducing effects for 10 to 15 days is inaccurate, as the effects typically last 3 to 5 days. Choice D is incorrect because there is no guideline suggesting that the client cannot use a TENS unit again for at least 2 weeks after treatment.

3. What is the most effective step in hand washing?

A. Using friction to remove potential pathogens.
B. Using hospital-grade soap.
C. Moisturizing the hands after washing to prevent cracking.
D. Washing hands with soap for at least 15 seconds.

Correct answer: A

Rationale: The most effective step in hand washing is using friction to remove potential pathogens. While using soap, moisturizing hands, and washing for a sufficient duration are important aspects of hand hygiene, the mechanical action of rubbing hands together with friction is crucial in dislodging and removing dirt, debris, and potential pathogens. Hospital-grade soap may be beneficial, but the physical act of friction is key to effective hand washing. Moisturizing after washing is important for skin health but not the most effective step in the hand washing process. Simply washing hands for a specific duration, such as 15 seconds, without proper friction may not effectively remove contaminants. Therefore, using friction for thorough cleaning is the most crucial step in hand washing.

4. Which of the following tests would MOST LIKELY be performed on a patient who is being monitored for coagulation therapy?

A. PT/INR
B. CBC
C. PTT
D. WBC

Correct answer: A

Rationale: The correct answer is A: PT/INR. Prothrombin times (PT/INR) are commonly used to monitor patients on Coumadin (warfarin) therapy, an anticoagulant that slows the blood's ability to clot. Monitoring PT/INR levels helps ensure the patient is receiving the appropriate dosage of Coumadin. Choice B, CBC (Complete Blood Count), is a general test that provides information on red blood cells, white blood cells, and platelets but is not specific to monitoring coagulation therapy. Choice C, PTT (Partial Thromboplastin Time), is another coagulation test but is not as commonly used for monitoring Coumadin therapy. Choice D, WBC (White Blood Cell count), is unrelated to monitoring coagulation therapy and is used to assess immune system function.

5. A home health nurse is preparing to visit her next client, whom she has never visited before. Which of the following actions indicates the nurse is upholding safety precautions?

A. Send a text to the client to confirm the location of the house
B. Leave her purse and valuables on the seat in the car and lock the doors
C. Ask the client to keep an extra set of keys in case the car is locked
D. Keep the car windows rolled up when in an unfamiliar environment

Correct answer: D

Rationale: The correct answer is to keep the car windows rolled up when in an unfamiliar environment. This action helps uphold safety precautions for the home health nurse. When visiting a new client in an unfamiliar area, it is essential to ensure personal safety. Keeping the car windows rolled up can prevent potential intruders or unwanted individuals from gaining access to the nurse while in the vehicle. This precaution is important for personal safety and security. Choice A, sending a text to the client to confirm the location of the house, is not directly related to the nurse's safety during the visit. While communication with the client is important, it does not directly address the nurse's safety. Choice B, leaving her purse and valuables on the seat in the car, poses a security risk. It is not advisable to leave valuables visible in the car, as it may attract thieves and compromise the nurse's safety. Choice C, asking the client to keep an extra set of keys, is more related to accessibility and convenience rather than the nurse's safety. While having an extra set of keys may be helpful, it does not directly address safety precautions for the nurse.