which of the following cardiac valves prevents blood from returning to the left ventricle of the heart which of the following cardiac valves prevents blood from returning to the left ventricle of the heart
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Nursing Elites

ATI RN

ATI Anatomy and Physiology

1. Which of the following cardiac valves prevents blood from returning to the left ventricle of the heart?

Correct answer: aortic

Rationale: The correct answer is the aortic valve. The aortic valve is located between the left ventricle and the aorta, preventing the backflow of blood into the left ventricle once it has been pumped out during systole. Choice A, pulmonic, is incorrect as it is associated with the right side of the heart. Choice B, mitral, is incorrect as it is the valve between the left atrium and ventricle. Choice C, tricuspid, is incorrect as it is located between the right atrium and ventricle.

2. The college health nurse is providing health education for freshmen. Which of the following pieces of information about immunizations is applicable to individuals of this age group?

Correct answer: B

Rationale: For freshmen in college, the yearly administration of the flu vaccine is recommended. This is important to protect against seasonal influenza outbreaks that can spread rapidly in close living quarters such as dormitories. Choice A is incorrect as oral polio vaccine is not typically given to individuals of this age group. Choice C is incorrect as tetanus toxoid boosters are usually recommended every 10 years, not within 2 years. Choice D is incorrect as the administration of the hepatitis A vaccine is not mandatory for all individuals in this age group.

3. The nurse is caring for a patient who is at risk for infection. Which action by the nurse indicates correct understanding about standard precautions?

Correct answer: C

Rationale: The correct understanding of standard precautions includes wearing appropriate personal protective equipment to prevent exposure to body fluids. Wearing eyewear when emptying the urinary drainage bag is crucial as it protects the nurse's eyes from potential splashes of body fluids. Teaching the patient about good nutrition (Choice A) is important for overall health but is not directly related to standard precautions. Disposing of an uncapped needle correctly (Choice B) is part of safe needle handling but does not specifically relate to standard precautions. Donning gloves when wearing artificial nails (Choice D) is not a correct understanding of standard precautions, as artificial nails can harbor microorganisms and increase the risk of infection transmission.

4. Monitoring the number of times a medication is given utilizing the 'five rights' is an example of which phase of the Six Sigma program?

Correct answer: A

Rationale: In the Six Sigma program, the 'Measure' phase focuses on monitoring and measuring processes to ensure they meet the desired standards. This includes tracking the number of times a medication is given correctly using the 'five rights' principle. Therefore, the correct answer is A. Choice B, 'Management,' does not specifically relate to monitoring processes or data collection, so it is not the correct answer. Choice C, 'Quantitative,' refers to the use of numerical data in decision-making, which is a broader concept and not specific to monitoring processes within the Six Sigma framework. Choice D, 'Goal,' is too general and does not capture the specific phase of Six Sigma that involves monitoring and measuring processes.

5. Which laboratory data indicate the client’s pancreatitis is improving?

Correct answer: A

Rationale: The correct answer is A. Amylase and lipase are enzymes specifically related to pancreatitis. A decrease in their serum levels indicates improvement in pancreatitis. White blood cell count (WBC), choices C and D, are not direct markers for pancreatitis improvement. Bilirubin levels, choice C, are more related to liver function rather than pancreatitis. Blood urea nitrogen (BUN) level, choice D, is a marker for kidney function, not pancreatitis.

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