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. Which of the following statements best describes substance P?

A. Substance P decreases a client's sensitivity to pain
B. Substance P levels are drawn before administration of narcotic analgesics
C. Substance P is found in the brain and is responsible for pain control and management of depression
D. Substance P is found in the dorsal horn of the spinal column

Correct answer: D

Rationale: Substance P is a neurotransmitter found in the brain and the dorsal horn of the spinal column, not just in the brain. It is associated with pain transmission and modulation. Substance P is known to cause inflammation, edema, and pain. While it plays a role in pain perception, it does not decrease a client's sensitivity to pain (Choice A), nor are its levels typically drawn before administering narcotic analgesics (Choice B). Although substance P is involved in pain control, it is not responsible for managing depression (Choice C). Therefore, the correct statement is that substance P is found in the dorsal horn of the spinal column.

3. A client has become combative and is attempting to pull out his IV and take off his surgical dressings. The nurse receives an order to apply wrist restraints. Which action of the nurse signifies that restraints are being used safely?

A. The nurse ties the restraints in a square knot to prevent the client from untying them
B. The restraints are attached to a movable portion of the bed
C. The padded side of the restraint is applied next to the skin of the wrist
D. The nurse assesses the client's distal circulation every 24 hours

Correct answer: C

Rationale: Restraint use must prioritize the safety of the client. When applying restraints around the wrists, the padded side should be placed against the skin to help prevent skin breakdown. Additionally, restraints should be secured in quick-release knots to ensure they can be removed rapidly in case of an emergency. Choice A is incorrect as restraints should not be tied in a way that could prevent quick removal. Choice B is incorrect because restraints should not be attached to a movable part of the bed to avoid unintentional movement. Choice D is incorrect as assessing distal circulation is important but is not directly related to the safe application of restraints.

4. Where is the pulse point located on the top of the foot?

A. the dorsalis pedis
B. This is the pulse point checked in patients with peripheral vascular problems.
C. This pulse point may be absent in some patients due to a congenital anomaly.
D. All of the above.

Correct answer: D

Rationale: The pulse point located on the top of the foot is known as the dorsalis pedis pulse point. It is situated on the arch of the foot, slightly lateral to the midline. This pulse point is commonly examined in patients with peripheral vascular problems to assess blood flow adequacy. Additionally, some individuals may not have this pulse point due to a congenital anomaly. Therefore, all the given statements are correct in relation to the dorsalis pedis pulse point, making 'All of the above' the correct answer. Choices A, B, and C are all individually valid characteristics of the dorsalis pedis pulse point, hence selecting 'All of the above' as the correct answer is appropriate.

5. When performing a physical examination, safety must be considered to protect the examiner and the patient against the spread of infection. Which of these statements describes the most appropriate action the nurse would take when performing a physical examination?

A. Washing one's hands after removing gloves is necessary, even if the gloves are still intact
B. Hands are washed before and after every physical patient encounter
C. Hands are washed before the examination of each body system to prevent the spread of bacteria from one part of the body to another
D. Gloves are worn throughout the entire examination to demonstrate concern regarding the spread of infectious diseases

Correct answer: B

Rationale: The most appropriate action for the nurse to take when performing a physical examination is to wash their hands before and after every physical patient encounter. This practice helps prevent the spread of infection. Hands should also be washed after contact with blood, body fluids, secretions, and excretions, and after contact with any equipment contaminated with body fluids. It is crucial to wash hands after removing gloves, even if the gloves appear intact. Choice A is incorrect because washing hands after removing gloves is necessary to ensure thorough hygiene. Choice C is incorrect because hands should be washed before and after every patient encounter, not just before examining each body system. Choice D is incorrect because gloves should be worn when there is potential contact with body fluids, but they do not need to be worn throughout the entire examination.