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 a sequence of repeated weights is necessary, the healthcare provider should aim to weigh the patient at the same time of day and with consistent clothing. Using a standardized balance or electronic standing scale is recommended for accurate measurements. The patient should remove shoes and heavy outer clothing. It is not required for the patient to always be weighed in undergarments. What is the most appropriate indicator of the patient's overall well-being?

A. General health
B. Genetic makeup
C. Nutritional status
D. Activity and exercise patterns

Correct answer: A

Rationale: Weight measurements are essential to assess general health, particularly in monitoring growth patterns. Height and weight recordings are crucial indicators of overall well-being, reflecting the individual's health status. Genetic makeup does not change with weight fluctuations, making it an inappropriate indicator. Nutritional status and activity levels can influence weight but are not as comprehensive as general health in reflecting overall well-being.

3. Which of these statements is true regarding the use of Standard Precautions in the healthcare setting?

A. Standard Precautions apply to all body fluids, except sweat.
B. Alcohol-based hand rub should be used if hands are not visibly dirty.
C. Standard Precautions are intended for use with all patients, regardless of their risk or presumed infection status.
D. Standard Precautions are to be used only when non-intact skin, excretions containing visible blood, or expected contact with mucous membranes are present.

Correct answer: C

Rationale: Standard Precautions are designed to reduce the risk for transmission of microorganisms from both recognized and unrecognized sources. They are intended for use with all patients, regardless of their risk or presumed infection status. Standard Precautions apply to all body fluids, secretions, and excretions except sweat - whether or not they contain visible blood, non-intact skin, or mucous membranes. Hands should be washed with soap and water if visibly soiled with blood or body fluids. Alcohol-based hand rubs can be used if hands are not visibly soiled. Choice A is incorrect because Standard Precautions apply to all body fluids, secretions, and excretions except sweat. Choice B is incorrect because alcohol-based hand rub should be used when hands are not visibly dirty. Choice D is incorrect because Standard Precautions are not limited to situations involving non-intact skin, excretions with visible blood, or expected mucous membrane contact.

4. When evaluating the temperature of older adults, what aspect should the healthcare provider remember about an older adult's body temperature?

A. The body temperature of the older adult is lower than that of a younger adult.
B. An older adult's body temperature is approximately the same as that of a young child.
C. Body temperature varies based on the type of thermometer used.
D. In older adults, body temperature can fluctuate widely due to less effective heat control mechanisms.

Correct answer: A

Rationale: When evaluating the temperature of older adults, it is important to note that their body temperature is usually lower than that of younger adults, with a mean temperature of 36.2�C. Choice B is incorrect because an older adult's body temperature is not approximately the same as that of a young child. Choice C is incorrect because body temperature is a physiological parameter and does not vary based on the type of thermometer used. Choice D is incorrect because while older adults may have less effective heat control mechanisms, their body temperature is typically lower, not widely fluctuating.

5. The acronym FAST is used to help responders remember the steps to recognizing which of the following conditions?

A. Onset of labor in a pregnant woman
B. Stroke
C. Heart attack
D. Migraine

Correct answer: B

Rationale: The correct answer is B: Stroke. The acronym FAST is used to help recognize the signs of a stroke. The letters stand for Face, Arms, Speech, and Time. This mnemonic helps in identifying facial drooping, arm weakness, speech difficulties, and the importance of time in seeking emergency care. Choices A, C, and D are incorrect because the FAST acronym specifically pertains to stroke recognition, not the onset of labor, heart attacks, or migraines.