from an ecg reading a qrs complex represents
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Nursing Elites

ATI RN

ATI Nutrition Practice Test A 2019

1. What does a QRS Complex represent in an ECG reading?

Correct answer: C

Rationale: The QRS Complex in an ECG reading represents ventricular depolarization, which is the process of the heart's ventricles preparing to contract by changing the electrical charge in the cell, hence choice 'C' is the correct answer. Choice 'A' is incorrect because atrial depolarization is represented by the P wave in an ECG reading, not the QRS Complex. Choice 'B' is incorrect as ventricular repolarization is depicted by the T wave, not the QRS Complex. Finally, choice 'D' is also incorrect because the QRS Complex is not the end of ventricular depolarization, but the process itself.

2. A nurse is providing dietary teaching for a client who has a burn injury and adheres to a vegan diet. The nurse should recommend which of the following foods as the best source of protein to promote wound healing?

Correct answer: D

Rationale: Lentils are an excellent source of plant-based protein, essential for wound healing in a vegan diet. Brown rice, orange juice, and pureed avocado are not protein-rich foods like lentils and would not provide sufficient protein for wound healing in this scenario.

3. Transmission of HIV from an infected individual to another person occurs:

Correct answer: D

Rationale: Understanding the underlying pathology and therapeutic techniques ensures that nursing care is not only reactive but also preventative, reducing the risk of complications.

4. Sam is trying to lose weight by skipping lunch. By the middle of the afternoon, Sam is very uncomfortable and feels that they "have" to eat. Sam is experiencing:

Correct answer: D

Rationale: Hunger is the physiological need to eat, which Sam is experiencing due to skipping a meal and the body signaling the need for nutrients.

5. Which vitamin acts most like a hormone?

Correct answer: C

Rationale: The correct answer is Vitamin D. Although vitamin D, also known as calciferol, has been called a vitamin, it is more appropriately classified as a hormone. Like hormones, vitamin D acts to control the function of other cell types. For example, it helps the body absorb and regulate skeletal calcium and phosphorus levels. Choice A (Vitamin A) plays a crucial role in vision and immune function. Choice B (Vitamin B) is a complex of different vitamins that play various roles in the body. Choice D (Vitamin C) is important for collagen production and acts as an antioxidant.

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