to properly read a meniscus

NCLEX-RN

NCLEX RN Predictor Exam

1. To properly read a meniscus,

A. hold the measuring device at eye level and read the bottom of the curve of the liquid level
B. hold the measuring device at eye level and read the top of the curve of the liquid level where the liquid adheres to the walls of the container.
C. hold the measuring device at table level and, looking down into the measuring device, read the bottom of the curve of the liquid level.
D. hold the measuring device at table level and, looking down into the measuring device, read the top of the curve of the liquid level.

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. You have been assigned to take an apical pulse for one of the patients on the nursing unit. How will you do this?

A. You will place the stethoscope over the heart and listen for any irregular beats.
B. You will place the stethoscope over the heart and count the beats per minute.
C. You will place your fingertip over the patient's wrist and feel for any irregular beats.
D. You will place your fingertip over the patient's wrist and count the beats per minute.

Correct answer: B

Rationale: To take an apical pulse accurately, you should place the stethoscope over the heart and count the number of beats per minute. This method provides a precise assessment of the heart rate. While listening for irregular beats is essential for assessing the heart's rhythm, the primary objective of taking an apical pulse is to determine the heart rate. Choices C and D are incorrect because the apical pulse is not taken at the wrist; instead, it is obtained by auscultating at the apex of the heart, usually at the point where the fifth intercostal space meets the midclavicular line.

3. What does the medical term 'diaphoresis' mean?

A. Profuse vomiting
B. Profuse sweating
C. Gasping for air
D. None of the above

Correct answer: B

Rationale: The correct answer is B: Profuse sweating. Diaphoresis is a medical term that refers to excessive sweating. It is commonly seen in emergency situations such as heart attacks or diabetic episodes. Choice A, 'Profuse vomiting,' is incorrect as diaphoresis is not related to vomiting. Choice C, 'Gasping for air,' is also incorrect as it refers to difficulty breathing, not sweating. Choice D, 'None of the above,' is incorrect as diaphoresis specifically relates to sweating.

4. A client is taking a walk down the hallway when she suddenly realizes that she needs to use the restroom. Although she tries to make it to the bathroom on time, she is incontinent of urine before reaching the toilet. What type of incontinence does this situation represent?

A. Relex incontinence
B. Urge incontinence
C. Total incontinence
D. Functional incontinence

Correct answer: D

Rationale: Functional incontinence occurs when a client develops an urge to void but may not be able to reach the toilet in time. In this scenario, the client had the urge to use the restroom but was unable to make it in time, leading to incontinence. Functional incontinence may be related to conditions that cause the client to forget bladder sensation until the last minute, such as cognitive changes, or the client may have mobility problems that prevent her from reaching the bathroom in time. Choice A, Reflex incontinence, is incorrect as reflex incontinence is characterized by the involuntary loss of urine due to hyperreflexia of the detrusor muscle. Choice B, Urge incontinence, is not the correct answer as urge incontinence is the involuntary loss of urine associated with a strong desire to void. Choice C, Total incontinence, is also incorrect as it refers to the continuous and unpredictable loss of urine, not specifically related to the inability to reach the toilet in time.

5. When dismissing a 5-year-old boy from the pediatrics unit, what type of seat belt restraint should the child wear as the parents drive the car to the front door of the hospital?

A. A 5-point restraint in the back seat, facing backward
B. A booster seat with a lap and shoulder belt in the back seat
C. A lap belt in the back seat
D. A lap and shoulder belt in the front seat

Correct answer: B

Rationale: A 5-year-old child riding in a car should use a restraint system for safety. The Centers for Disease Control and Prevention recommend that children under 13 years should not ride in the front seat of a car due to safety concerns. For a 5-year-old child, a booster seat with a lap and shoulder belt in the back seat is the most appropriate choice. This setup ensures proper protection and restraint for the child's size and age. Choice A is incorrect because a 5-point restraint system facing backward is not suitable for a 5-year-old child in a car. Choice C is incorrect as a lap belt alone does not provide adequate protection for a child of this age. Choice D is incorrect as children should not be seated in the front seat, especially at this young age.