a urine pregnancy test

NCLEX-RN

NCLEX RN Predictor Exam

1. A urine pregnancy test:

A. May be negative even if a blood pregnancy test is positive.
B. Is positive only during the first trimester of pregnancy.
C. Will be negative if the amount of LH isn't enough to meet or exceed the sensitivity of the testing device.
D. All of the above.

Correct answer: A

Rationale: A urine pregnancy test detects HCG in a pregnant woman's urine. Blood levels of HCG are usually higher and register earlier than HCG levels in the urine. Choice A is correct because urine pregnancy tests may be negative even if a blood pregnancy test is positive due to the differences in HCG levels in blood and urine. Choice B is incorrect because a urine pregnancy test can be positive throughout pregnancy, not just in the first trimester. Choice C is incorrect because LH (luteinizing hormone) is not the hormone detected in a pregnancy test; it is HCG (human chorionic gonadotropin). Choice D is incorrect because not all the statements provided are true.

2. A resident brings several electronic devices to a nursing home. One of the devices has a two-pronged plug. What rationale should the nurse provide when explaining why an electrical device must have a three-pronged plug?

A. Controls stray electrical currents.
B. Promotes efficient use of electricity.
C. Shuts off the appliance if there is an electrical surge.
D. Divides the electricity among the appliances in the room.

Correct answer: A

Rationale: A three-pronged plug functions as a ground to dissipate stray electrical currents. This helps prevent electrical shocks and ensures the safety of the user. Choice B is incorrect because the number of prongs on a plug does not impact the efficient use of electricity. Choice C is incorrect because a three-pronged plug does not shut off the appliance during an electrical surge; that role is typically fulfilled by surge protectors. Choice D is incorrect as a three-pronged plug does not divide electricity among appliances in a room; it primarily serves as a safety measure to handle excess electrical currents.

3. Cheryl M. has a serious swallowing disorder. She has asked you for a glass of water. The doctor has ordered honey thickness liquids for her. Water is not a honey thickness liquid. It is much thinner. What should you do?

A. Tell the resident that she cannot have water.
B. Give her applesauce instead of the water.
C. Tell Cheryl that she is NPO until midnight.
D. Thicken the water and give it to her.

Correct answer: D

Rationale: You can give Cheryl the water that she has requested; however, since water is not a honey-thick liquid as ordered by the doctor, you must thicken it with a commercial thickener before giving it to her. This will ensure that the water is at the appropriate consistency for her swallowing disorder. Choices A, B, and C are incorrect: A) Telling the resident she cannot have water is not the best course of action without attempting to modify it first. B) Giving her applesauce instead of water does not address the specific request for water. C) Placing Cheryl on NPO status until midnight is unnecessary and does not address her immediate request for water.

4. During a work shift, how can a nurse best demonstrate the dynamic nature of the nursing process?

A. Collaborating with the client to establish healthcare goals
B. Reviewing the client's medical record history
C. Explaining the purpose of administered medications to the client
D. Rapidly resetting priorities for client care based on changes in the client's condition

Correct answer: D

Rationale: The nursing process is dynamic as it involves adapting to the changing health status of the client. Rapidly resetting priorities for client care based on changes in the client's condition exemplifies this dynamic nature by responding promptly to evolving circumstances. Collaborating with the client to establish healthcare goals (Option A), reviewing the client's medical record history (Option B), and explaining the purpose of administered medications to the client (Option C) are all essential nursing actions but do not directly showcase the dynamic nature of the nursing process.

5. In the Gram Stain procedure, which component acts as the mordant?

A. Crystal violet
B. Methyl alcohol
C. Iodine
D. Safranin

Correct answer: C

Rationale: In the Gram Stain procedure, the mordant is Gram's Iodine. The purpose of the mordant is to form a complex with the crystal violet, enhancing its ability to bind to the cell wall. Crystal violet is actually the primary stain used in the Gram Stain procedure to initially color all cells. Methyl alcohol is the decolorizer that removes the crystal violet from certain cell types. Safranin is the counterstain used to stain those cells that did not retain the crystal violet stain after the decolorization step.