each small square on the ekg paper is

NCLEX-RN

NCLEX RN Predictor Exam

1. Each small square on the EKG paper is:

A. 0.04 seconds long and 5mm tall
B. 0.2 seconds long and 5mm tall
C. 0.04 seconds long and 20mm tall
D. 0.04 seconds long and 1mm tall

Correct answer: D

Rationale: Each small square on an EKG paper represents 0.04 seconds long and 1mm tall. This standardization is essential for accurate measurements. One large square on EKG paper consists of 5 small squares in length and 5 small squares in height, which equals 0.2 seconds long and 5mm tall (0.5 mV). Choice A is incorrect because while the duration is correct, the height mentioned is not accurate. Choice B is incorrect as it provides the correct height but the duration is inaccurate. Choice C is incorrect as the height mentioned is exaggerated, and the duration is correct but the height is not. Therefore, the correct answer is 0.04 seconds long and 1mm tall.

2. In the term 'Hemoglobin,' the suffix '-globin' means:

A. Protein
B. Iron
C. Metal
D. Blood

Correct answer: A

Rationale: The suffix '-globin' in the term 'Hemoglobin' specifically refers to a protein. Hemoglobin is a protein found in red blood cells that carries oxygen. Choice B, 'Iron,' is incorrect as iron is a mineral component of hemoglobin but not the meaning of the suffix. Choice C, 'Metal,' is too broad and not specific to the meaning of the suffix in this context. Choice D, 'Blood,' is incorrect as it refers to the overall term 'Hemoglobin' rather than the specific meaning of the suffix '-globin.' Therefore, the correct answer is A: 'Protein.'

3. Where is the pulse point located on the top of the foot?

A. the dorsalis pedis
B. This is the pulse point checked in patients with peripheral vascular problems.
C. This pulse point may be absent in some patients due to a congenital anomaly.
D. All of the above.

Correct answer: D

Rationale: The pulse point located on the top of the foot is known as the dorsalis pedis pulse point. It is situated on the arch of the foot, slightly lateral to the midline. This pulse point is commonly examined in patients with peripheral vascular problems to assess blood flow adequacy. Additionally, some individuals may not have this pulse point due to a congenital anomaly. Therefore, all the given statements are correct in relation to the dorsalis pedis pulse point, making 'All of the above' the correct answer. Choices A, B, and C are all individually valid characteristics of the dorsalis pedis pulse point, hence selecting 'All of the above' as the correct answer is appropriate.

4. A patient's urine specimen tested positive for bilirubin. Which of the following is most true?

A. The patient should be evaluated for kidney disease
B. The specimen was probably left at room temperature for more than two hours
C. The specimen is positive for bacteria
D. The specimen should be stored in an area protected from light

Correct answer: D

Rationale: Bilirubin is easily broken down by light, so all samples testing positive for bilirubin should be protected from light exposure. Storing the specimen in an area protected from light helps maintain the integrity of the bilirubin levels for accurate testing. Choice A is incorrect because the presence of bilirubin in urine does not necessarily indicate kidney disease. Choice B is incorrect as the exposure to light, not room temperature, affects bilirubin levels. Choice C is incorrect as the presence of bilirubin does not indicate the presence of bacteria in the specimen.

5. A client is being transferred from a bed to a wheelchair. Which action is essential to maintain client safety in this situation?

A. Position the wheelchair at the foot of the bed
B. Maintain a space of at least 12 inches between the wheelchair and the bed
C. Place the footplates in the lowest position before transferring the client
D. Lock both wheels on the wheelchair before moving the client

Correct answer: D

Rationale: When transferring a client from a bed to a wheelchair, it is crucial to prioritize client safety. Locking both wheels on the wheelchair before moving the client is essential as it adds stability and prevents the wheelchair from moving unexpectedly during the transfer process. Placing the wheelchair at the foot of the bed allows for easier transfer, but ensuring the wheels are locked is more critical for safety. Maintaining a 12-inch space between the wheelchair and the bed is not as essential as ensuring wheel locks are engaged. While placing the footplates in the lowest position can enhance client comfort, it is not a safety measure that is as critical as securing the wheelchair by locking its wheels before the transfer.