hypokalemia is reflected in the ecg by which of the following
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ATI RN

ATI Nutrition Practice Test A 2019

1. Which of the following is reflected in an ECG due to hypokalemia?

Correct answer: B

Rationale: Hypokalemia, a condition characterized by low levels of potassium in the blood, is reflected in an ECG by a widening QRS Complex and a U wave. This is because potassium plays a key role in the electrical activity of the heart, and its deficiency can lead to abnormalities in the heart's rhythm as represented by these specific changes on the ECG. Choice A is incorrect as tall T waves and pathologic Q waves are more commonly associated with hyperkalemia or myocardial infarction, respectively, rather than hypokalemia. Choices C and D are also incorrect as they do not accurately reflect the ECG changes caused by hypokalemia.

2. Select all that apply. You are interested in learning about the effect of eating diet soft drinks on your health. Your internet search leads you to a website with the ending .com, which tells you that diet soft drinks contain sugar alcohols that can cause harm. Which of the following actions are logical?

Correct answer: D

Rationale: Logical steps include evaluating the credibility of the website, reading official guidelines, comparing information from credible sources, and verifying the author's qualifications.

3. Which of the following is a tricyclic antidepressant drug?

Correct answer: D

Rationale: Imipramine (Tofranil) is a tricyclic antidepressant drug. This class of medications is used to treat depression, and they work by increasing the levels of certain chemicals in the brain that help lift mood. On the other hand, Venlafaxine (Effexor) is a serotonin and norepinephrine reuptake inhibitor (SNRI), Fluoxetine (Prozac) is a selective serotonin reuptake inhibitor (SSRI), and Sertraline (Zoloft) is also an SSRI. Therefore, they are not classified as tricyclic antidepressants.

4. 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.

5. What is the end product of lipid digestion?

Correct answer: A

Rationale: The correct answer is A, fatty acid. During the process of lipid digestion, triglycerides are broken down into fatty acids and glycerol. These end products are then absorbed into the bloodstream or lymphatic system for further processing. Choices B, C, and D are incorrect because sucrose is a disaccharide, monosaccharide is a simple sugar unit, and amino acid is a building block of proteins, not the end product of lipid digestion.

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