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. When performing an EKG, the patient starts to laugh out of feelings of anxiety. What would you expect the EKG to show? (Choose the BEST answer.)

A. Increased pulse rate, normal EKG
B. Decreased pulse rate, abnormal EKG
C. Tachycardia, poor EKG graph
D. Bradycardia, poor EKG graph

Correct answer: C

Rationale: When a patient laughs due to anxiety during an EKG, it is likely to cause tachycardia, which is a rapid heart rate. This increased heart rate can lead to poor EKG graph quality as the electrical signals from large moving muscles can interfere with data collection from the chest leads. Therefore, in this scenario, the EKG is expected to show tachycardia with poor graph quality. Choices A, B, and D are incorrect because a patient laughing out of anxiety is more likely to result in an increased pulse rate (tachycardia) rather than a decreased pulse rate (bradycardia) or a normal EKG.

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. Surgical asepsis is being performed when:

A. wiping down exam tables with bleach
B. sterilizing instruments
C. changing table paper
D. wearing gloves when performing injections

Correct answer: B

Rationale: Surgical asepsis refers to the process of maintaining a sterile environment to prevent the introduction of pathogens to a patient's body. Sterilizing instruments is a crucial aspect of surgical asepsis as it ensures that the instruments used during procedures are free from microorganisms that could cause infections. Wiping down exam tables with bleach may help in cleaning and disinfecting surfaces but does not pertain directly to maintaining a sterile field. Changing table paper is important for cleanliness and infection control but is not specifically related to surgical asepsis. Wearing gloves when performing injections is important for standard precautions and preventing the spread of infection but does not encompass the concept of surgical asepsis, which focuses on maintaining a sterile field during invasive procedures.

5. While caring for Mrs. Thomas, you see a notation on the nursing care plan that states 'ambulate at least 10 yards qid'. This patient will be assisted with ambulation at which of the following times?

A. 10:00 AM
B. 10 am and 2 pm
C. 10 am and 2 pm
D. 10 am, 2 pm, 6 pm, and 10 pm

Correct answer: D

Rationale: The correct answer is to assist the patient with ambulation at 10 am, 2 pm, 6 pm, and 10 pm as qid stands for four times per day. This schedule is commonly followed in healthcare facilities to ensure regular ambulation and exercise for the patient. Choices A, B, and C do not cover all the specified times for ambulation as indicated by the qid notation on the care plan.