which of the following terms describes the amount of blood ejected per heartbeat

ATI RN

ATI Proctored Nutrition Exam 2019

1. Which of the following terms describes the amount of blood ejected per heartbeat?

A. Stroke volume
B. Cardiac output
C. Ejection fraction
D. Afterload

Correct answer: A

Rationale: The correct answer is A: Stroke volume. Stroke volume refers to the amount of blood ejected by the left ventricle in one contraction. Choice B, Cardiac output, is the total volume of blood pumped by the heart per minute and is calculated by multiplying stroke volume by heart rate. Choice C, Ejection fraction, is the percentage of blood pumped out of the left ventricle with each heartbeat. Choice D, Afterload, refers to the pressure or resistance that the ventricles must overcome to eject blood during systole. Therefore, in the context of the question, the term that specifically describes the amount of blood ejected per heartbeat is stroke volume.

2. What is the first step in decontamination?

A. Immediately applying a chemical decontamination foam to the area of contamination
B. Thoroughly washing and rinsing the patient with soap and water
C. Immediately applying personal protective equipment
D. Removing the patient's clothing and jewelry, then rinsing the patient with water

Correct answer: D

Rationale: The correct first step in decontamination is to remove the patient's clothing and jewelry to prevent further exposure and then rinse the patient with water. This helps to eliminate any contaminants on the patient's body. Choice A is incorrect because applying a chemical decontamination foam should come after removing clothing. Choice B is incorrect as washing and rinsing the patient should follow the removal of clothing. Choice C is incorrect as personal protective equipment should be worn by the individual performing the decontamination, not applied to the patient.

3. A client who 1) ___ diet requires 2) _ amounts of vitamin C.

A. A) Follows a vegan diet, B) More
B. B) Smokes cigarettes, B) More
C. A) Follows a vegan diet, C) The same
D. B) Smokes cigarettes, C) The same

Correct answer: B

Rationale: The correct answer is B) Smokes cigarettes, More. Smoking increases the need for vitamin C as it can deplete the body's vitamin C levels. Vegan diets, on the other hand, require more vitamin C for optimal absorption due to the absence of heme iron, which enhances non-heme iron absorption. Choices A and C are incorrect because vegan diets require more vitamin C, while smoking increases the need for vitamin C.

4. Which dietary modification is most suitable for a client with type 2 diabetes who wants to improve glycemic control?

A. Increase intake of saturated fats
B. Decrease intake of refined carbohydrates
C. Completely avoid all fruits
D. Increase intake of sugary snacks

Correct answer: B

Rationale: Decreasing the intake of refined carbohydrates is the most effective dietary modification for a client with type 2 diabetes who aims to improve their glycemic control. Refined carbohydrates can cause sudden spikes in blood sugar levels, making diabetes management more difficult. Increasing the intake of saturated fats (Choice A) is not advisable as it can negatively impact heart health. Completely avoiding all fruits (Choice C) is unnecessary because most fruits have a low glycemic index and provide essential nutrients. Increasing the intake of sugary snacks (Choice D) will deteriorate glycemic control due to their high sugar content.