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. A parent calls the pediatric clinic and is frantic about the bottle of cleaning fluid her child drank for 20 minutes. Which of the following is the most important instruction the nurse can give the parent?

A. This too shall pass.
B. Take the child immediately to the ER
C. Contact the Poison Control Center quickly
D. Give the child syrup of ipecac

Correct answer: C

Rationale: In situations where a child has ingested a potentially harmful substance, contacting the Poison Control Center quickly is crucial. The Poison Control Center can provide specific guidance tailored to the child's situation, which can include whether immediate medical attention is necessary or if any actions need to be taken at home. Option A, 'This too shall pass,' is not appropriate as it dismisses the seriousness of the situation. Option B, 'Take the child immediately to the ER,' may not always be the best course of action without guidance from experts. Option D, 'Give the child syrup of ipecac,' is outdated advice and not recommended as a first response to poisoning incidents.

3. When a patient is standing in anatomical position, where are their feet?

A. Facing forward with the toes spread open
B. Facing out to the sides to open the hips
C. Side by side and facing forward; toes resting comfortably
D. The feet are pointed inward.

Correct answer: B

Rationale: When a person is standing in anatomical position, their feet are side by side, and they are facing forward with the toes pointing out to the sides to open the hips. This position allows for proper alignment of the body for anatomical reference. Choice A is incorrect because the feet should not be spread open, but rather side by side. Choice C is incorrect as it does not mention the correct positioning of the feet. Choice D is incorrect as the feet should not be pointed inward, but rather facing out to the sides to open the hips.

4. Improper placement of the hands under the rib cage when performing the Heimlich maneuver could result in:

A. damage to the manubrium of the sternum.
B. damage to the xiphoid process.
C. damage to the coccyx.
D. None of the above is possible, even with improper hand placement.

Correct answer: B

Rationale: The xiphoid process is a small, cartilaginous extension at the inferior end of the sternum. Placing the hands improperly during the Heimlich maneuver too close to this process can result in it breaking off and potentially causing damage to internal organs. Choices A and C are incorrect because the manubrium of the sternum and the coccyx are not in the area where the hands would typically be placed during the Heimlich maneuver.

5. A patient suffering from hyperglycemia would be experiencing:

A. Low blood sugar
B. High blood sugar
C. Normal blood sugar
D. None of the above

Correct answer: B

Rationale: Hyperglycemia is a condition characterized by high blood sugar levels. In this state, there is an excess of glucose in the bloodstream. Patients with hyperglycemia are often diagnosed with diabetes. The term 'hyperglycemia' specifically refers to elevated blood sugar levels. Therefore, the correct answer is 'High blood sugar.' Choices A, C, and D are incorrect because hyperglycemia indicates elevated blood sugar levels and not low or normal levels.