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 is the most likely cause of constipation in a client?

A. Postponing bowel movement when the urge to defecate occurs
B. Intestinal infection
C. Antibiotic use
D. Food allergies

Correct answer: A

Rationale: The correct answer is to postpone bowel movement when the urge to defecate occurs. Clients who delay bowel movements by ignoring the urge to defecate or not evacuating promptly, such as in situations where they are not near a bathroom, are at higher risk of developing constipation. This behavior leads to a decrease in bowel movement frequency, slowed intestinal motility, and increased fecal water absorption, resulting in hard, dry stools that are difficult to pass. Intestinal infection (choice B), antibiotic use (choice C), and food allergies (choice D) are less likely to be direct causes of constipation compared to postponing bowel movements.

3. An examiner is using an ophthalmoscope to examine a patient's eyes. The patient has astigmatism and is nearsighted. Which of these techniques by the examiner would indicate that the examination is being correctly performed?

A. Rotating the lens selector dial to bring the object into focus
B. Using the large full circle of light when assessing pupils that are not dilated
C. Rotating the lens selector dial to the black numbers to compensate for astigmatism
D. Using the grid on the lens aperture dial to visualize the external structures of the eye

Correct answer: A

Rationale: To correctly perform an eye examination using an ophthalmoscope on a patient with astigmatism and nearsightedness, the examiner should rotate the lens selector dial to bring the object into focus. This adjustment helps compensate for nearsightedness or farsightedness but does not correct astigmatism. Rotating the lens selector dial to the black numbers is not an appropriate technique for compensating for astigmatism. Using the grid on the lens aperture dial is primarily for visualizing external structures of the eye, not for addressing refractive errors. The large full circle of light is typically used when assessing dilated pupils, not for examining patients with astigmatism and nearsightedness. Therefore, the correct technique is rotating the lens selector dial to bring the object into focus.

4. The functional health pattern assessment data states: 'Eats three meals a day and is of normal weight for height.' The nurse should draw which of the following conclusions about this data? Select all that apply.

A. Client has an actual health problem
B. Client has a wellness diagnosis
C. Collaborative health problem needs to be written
D. Possible nursing diagnosis exists

Correct answer: B

Rationale: The assessment data provided indicates a healthy pattern of nutrition and a normal weight for height, suggesting a positive health status. This aligns with a wellness diagnosis, such as 'Potential for enhanced nutrition,' which focuses on improving health further. An actual health problem refers to a current health issue present in the client, which is not evident in this data. Collaborative health problems involve interprofessional collaboration and are not indicated based on the information provided. While a diet assessment may be needed to evaluate food quality, the initial data suggests a wellness-focused approach to care.

5. During auscultation of a patient's heart sounds, the nurse hears an unfamiliar sound. Which action would the nurse take?

A. Ask the patient how he or she is feeling.
B. Document the findings in the patient's record.
C. Wait 10 minutes and auscultate the sound again.
D. Ask another nurse to double-check the finding.

Correct answer: D

Rationale: When encountering an unfamiliar sound during auscultation, it is crucial for the nurse to seek confirmation from another healthcare professional. Asking the patient about their feelings may not provide insight into the unfamiliar sound. Simply documenting the findings without verification may lead to errors in interpretation. Waiting and auscultating again after 10 minutes might delay necessary intervention. Consulting another nurse for a second opinion ensures accurate identification of the unfamiliar sound and appropriate follow-up actions.