to properly read a meniscus
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Nursing Elites

NCLEX-RN

NCLEX RN Predictor Exam

1. To properly read a meniscus,

Correct answer: A

Rationale: To properly read a meniscus, it is essential to hold the measuring device at eye level to avoid parallax error. Reading the bottom of the curve of the liquid level is correct because the meniscus is the concave or convex curve at the liquid's surface. Choice B is incorrect because reading the top of the curve where the liquid adheres to the walls of the container can lead to inaccurate measurements. Choices C and D are incorrect as they suggest holding the device at table level, which can introduce parallax error and result in an incorrect reading.

2. The healthcare professional is preparing to use a stethoscope for auscultation. Which statement is true regarding the diaphragm of the stethoscope?

Correct answer: A

Rationale: The diaphragm of the stethoscope is designed for listening to high-pitched sounds like breath, bowel, and normal heart sounds. It should be firmly held against the person's skin to ensure optimal sound transmission, leaving a ring after use. On the other hand, the bell of the stethoscope is ideal for detecting soft, low-pitched sounds such as extra heart sounds or murmurs. Therefore, the diaphragm is not used to block out low-pitched sounds but rather to enhance the detection of high-frequency sounds.

3. Assuming that an elderly patient will have a difficult time understanding the directions for how to take medication is an example of:

Correct answer: B

Rationale: Stereotyping is defined as providing a generalization about a person based on their culture or characteristics. In this scenario, assuming that an elderly patient will have difficulty understanding medication directions solely based on their age is an act of stereotyping. The healthcare provider is attributing a generalized trait to the patient without considering individual differences. Prejudice, on the other hand, involves forming a negative opinion about someone based on their heritage or culture, which is not evident in this situation. Encoding refers to the process of converting information into a form that can be stored in memory, and rationalization involves justifying one's behavior or decisions with logical reasons, neither of which are applicable in this context.

4. Digestion, elimination, and ___________ are the three functions of the digestive system.

Correct answer: C

Rationale: The correct answer is 'absorption.' The three main functions of the digestive system are digestion, absorption, and elimination. Absorption refers to the process of absorbing nutrients and other substances from the digested food into the bloodstream. Choices A, B, and D are incorrect: Constriction is not a primary function of the digestive system, relaxation is not a distinct function in this context, and peristalsis is a muscular movement that aids in digestion but is not one of the three main functions of the digestive system.

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?

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.

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