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. What is a common symptom of vitamin D deficiency?

Correct answer: C

Rationale: The correct answer is C: Bone pain. Vitamin D deficiency often leads to bone pain and weakness as it plays a crucial role in maintaining bone health by aiding in the absorption of calcium. Hair loss (choice A) is not a common symptom of vitamin D deficiency. Night blindness (choice B) is typically associated with vitamin A deficiency, not vitamin D deficiency. Rashes (choice D) are not a common symptom of vitamin D deficiency.

3. Which of the following best represents the goal of reflective listening?

Correct answer: C

Rationale: The correct answer is C. The goal of reflective listening is to keep the patient talking, allowing them to express their thoughts and concerns fully. Choice A, 'Repeating what the patient says,' is incorrect as reflective listening involves paraphrasing or summarizing rather than verbatim repetition. Choice B, 'Informing using direct advice,' is incorrect because reflective listening focuses on understanding the patient's perspective rather than providing direct advice. Choice D, 'Warning the patient,' is also incorrect as reflective listening aims to create a safe and open environment for the patient to share without feeling judged or warned.

4. After cleaning the abrasions and applying antiseptic, the nurse applies a cold compress to the swollen ankle as ordered by the physician. This statement shows that the nurse has a correct understanding of the use of a cold compress:

Correct answer: C

Rationale: The correct understanding of using a cold compress includes knowing that it helps prevent edema and reduces pain. Cold application constricts blood vessels, reducing blood flow to the area, which helps decrease swelling and pain. Choices A, B, and D are incorrect because cold compresses do not directly affect blood viscosity, safety compared to hot compresses, or eliminate toxic waste products due to vasodilation. It is essential for nurses to have a clear understanding of the rationale behind interventions to provide effective patient care.

5. This study, which is an in-depth study of one boy, is a:

Correct answer: A

Rationale: The correct answer is 'A: case study.' A case study involves an in-depth examination of a single individual, group, or event. In this scenario, focusing on one boy aligns with the definition of a case study. The other options are not applicable: B) A longitudinal study involves following subjects over a period of time, C) A cross-sectional study examines a population at a single point in time, and D) An evaluative study assesses the effectiveness of a program or intervention, which is not the focus of the given scenario.

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