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. When providing mouth care to a patient in a coma, what should you do to provide good and safe mouth care?

A. keep the head of the bed up to prevent aspiration
B. brush the teeth and rinse the mouth with a cup of water
C. use a special foam swab to brush only the tongue
D. use a special foam swab to brush the tongue and teeth

Correct answer: D

Rationale: When providing mouth care to a patient in a coma, it is crucial to use a special foam swab to brush the tongue and teeth. This method helps maintain good oral hygiene for comatose patients. Special foam swabs are designed to effectively clean all areas of the mouth, including the cheeks and tongue, ensuring thorough care. Using water for mouth care in comatose patients can lead to aspiration, so it is important to avoid this practice. Keeping the head of the bed up alone does not prevent aspiration during mouth care for comatose patients, making choice A incorrect. Merely brushing the tongue (choice C) or using a foam swab only on the tongue (choice B) may not provide the comprehensive mouth care necessary for patients in a coma.

3. Patients exhibiting signs of cyanosis will:

A. show signs of hyperoxia.
B. have increased O2 saturation.
C. have blood levels of CO2 higher than O2 levels.
D. None of the above.

Correct answer: C

Rationale: Cyanosis is a bluish discoloration of the skin and mucous membranes resulting from low blood oxygen levels. When a patient exhibits cyanosis, it indicates that their blood is poorly oxygenated, leading to a higher concentration of CO2 compared to oxygen. Options A and B are incorrect as cyanosis is associated with low oxygen levels, not hyperoxia or increased O2 saturation. Therefore, the correct answer is that patients exhibiting cyanosis will have blood levels of CO2 higher than O2 levels.

4. A nurse is preparing to insert a small-bore nasogastric feeding tube for a client's enteral feedings. In which method does the nurse measure the correct length of the tube?

A. From the tip of the nose to the xiphoid process
B. From the tip of the nose to the earlobe to the xiphoid process
C. From the earlobe to the xiphoid process
D. From the tip of the nose to the earlobe to the umbilicus

Correct answer: B

Rationale: When preparing to insert a nasogastric tube, the nurse must measure the correct length to ensure that the end of the tube will be in the correct position in the stomach. The accurate method to measure the length is from the tip of the nose to the earlobe to the xiphoid process. This length ensures that the end of the tube reaches the stomach, avoiding placement in the small intestine or esophagus. Choice A is incorrect as it does not include the earlobe, which is essential for accurate measurement. Choice C is incorrect because measuring from the earlobe alone does not provide the correct length for positioning in the stomach. Choice D is incorrect as it includes the umbilicus, which is not the appropriate landmark for measuring the length of a nasogastric tube intended for stomach placement.

5. After taking the vital signs for your patient and finding them to be normal, what should you do next?

A. Report the vital signs to the doctor
B. Write the vital signs on a scrap paper
C. Call the family members
D. Document them on the graphic VS form

Correct answer: D

Rationale: After assessing and finding that the vital signs are normal for the patient, the appropriate action would be to document them on the graphic VS form. This form is used to track and record vital sign measurements accurately and consistently. Reporting the normal vital signs to the doctor is not necessary unless there are concerning trends or deviations. Writing the vital signs on a scrap piece of paper is not recommended as it may not be an official or reliable record. Calling the family members is unrelated to the process of documenting and tracking vital signs for the patient.