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. The client is a chronic carrier of infection. To prevent the spread of the infection to other clients or healthcare providers, the nurse emphasizes interventions that do which of the following? (Berman & Snyder, 2012, p. 713)

A. Eliminate the reservoir
B. Block the portal of exit from the reservoir
C. Block the portal of entry into the host
D. Decrease the susceptibility of the host

Correct answer: B

Rationale: To prevent the spread of infection from a chronic carrier, the nurse should focus on blocking the portal of exit from the reservoir, which is the carrier person. By preventing the movement of the organism from the reservoir, the infection can be contained. Eliminating the reservoir is not feasible in this case as the carrier is a chronic carrier. Blocking the portal of entry into the host or decreasing the susceptibility of the host would only impact individual prevention and not the spread from the carrier to others.

3. When placing a patient in the AP position for an X-ray, what position would the patient be in?

A. Facing the X-ray film.
B. Right side against the X-ray film.
C. Left side against the X-ray film.
D. Facing away from the X-ray film

Correct answer: D

Rationale: The AP position stands for Anteroposterior Projection. When a patient is in the AP position for an X-ray, they are facing away from the X-ray film. This positioning allows for a clear view of the structures being imaged from front to back. Choices A, B, and C are incorrect because the patient is not facing or positioned against the X-ray film in the AP position, but rather facing away from it to capture the necessary diagnostic information.

4. Your patient who had AIDS/HIV has just died. Should you still use standard precautions as you provide post-mortem care?

A. Yes, because the virus is still transmissible
B. Yes, because respect must still be maintained
C. No, because the virus is no longer transmissible
D. No, because it is disrespectful

Correct answer: A

Rationale: Yes, you should still use standard precautions even after an HIV/AIDS patient has died. The virus can remain infectious after death, and healthcare workers need to protect themselves from potential exposure. Choice B is incorrect because while respect is important, the primary reason for using standard precautions is to prevent transmission of infectious diseases. Choice C is incorrect as the virus can still be transmissible even after the patient's death. Choice D is incorrect as using standard precautions is a matter of infection control, not a question of respect.

5. What is the first aid for frostbite?

A. Running cold water over the affected area. Warm or hot water will shock the area and cause more tissue damage.
B. Run warm water over the area to rapidly rewarm the affected area.
C. Run hot water over the area to warm the area as quickly as possible.
D. Cover the area with a blanket, using a heating pad if the blanket isn't warm enough.

Correct answer: A

Rationale: First aid for frostbite involves running cold water over the affected area. It is important to avoid warm or hot water as it can shock the area and cause further tissue damage. Warm water should not be used to rapidly rewarm the affected area. Similarly, hot water should also be avoided as it can warm the area too quickly and potentially cause harm. Covering the area with a blanket and using a heating pad may not be effective and can even lead to more damage. Seeking medical assistance is crucial if the tissue appears necrotic to prevent further complications.