low levels of high density lipoproteins hdl are

ATI RN

Proctored Nutrition ATI

1. Low levels of high-density lipoproteins (HDL) are?

A. associated with being underweight
B. more prevalent in males
C. highly predictive of CHD risk
D. not a good predictor of CHD risk

Correct answer: C

Rationale: Low levels of HDL cholesterol are a strong predictor of coronary heart disease (CHD) risk because HDL helps to remove excess cholesterol from the bloodstream. Choice A is incorrect because low HDL levels are not associated with being underweight but rather with increased CHD risk. Choice B is incorrect as low HDL levels are not more prevalent in males but can affect both genders. Choice D is incorrect as low levels of HDL are indeed a good predictor of CHD risk.

2. A nurse is teaching a client about iron-rich foods. Which food is the best source of heme iron?

A. Spinach
B. Lentils
C. Beef liver
D. Tofu

Correct answer: C

Rationale: Heme iron, found in animal products like beef liver, is more easily absorbed than non-heme iron from plant sources.

3. Which enzyme is most essential for hydrolyzing large protein molecules?

A. Gastric lipase
B. Pepsin
C. Mucus
D. Intrinsic factor

Correct answer: B

Rationale: Pepsin, choice B, is the correct answer as it is a proteolytic enzyme that is essential for the breakdown of large protein molecules in the stomach. Gastric lipase, choice A, is incorrect because it primarily targets fats, not proteins, hence it is not involved in protein hydrolysis. Mucus, choice C, is incorrect as it serves to protect the stomach lining from acidic gastric juices and does not play a direct role in protein digestion. Intrinsic factor, choice D, is incorrect as it is vital for the absorption of Vitamin B12 in the small intestine and doesn't participate in the process of hydrolyzing proteins.

4. In managing Type 2 diabetes, what is the most important dietary change?

A. Increase carbohydrate intake
B. Increase fiber intake
C. Increase protein intake
D. Reduce fat intake

Correct answer: B

Rationale: Increasing fiber intake can help regulate blood sugar levels in patients with Type 2 diabetes.

5. Which systolic blood pressure measurement is classified as prehypertension?

A. 106 mmHg
B. 119 mmHg
C. 130 mmHg
D. 141 mmHg

Correct answer: B

Rationale: According to the blood pressure classification, a systolic blood pressure between 120-139 mmHg is considered prehypertension. This range indicates an increased risk for developing hypertension if not managed appropriately. Therefore, a systolic blood pressure of 119 mmHg falls into the prehypertension category. A systolic pressure of 106 mmHg is within the normal range, while 130 mmHg and above would be classified as stage 1 and stage 2 hypertension respectively, not prehypertension.