ATI RN
ATI Nutrition Proctored Exam 2023
1. Which enzyme is most essential for hydrolyzing large protein molecules?
- A. Gastric lipase
- B. Pepsin
- C. Mucus
- D. Intrinsic factor
Correct answer: B: Pepsin
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.
2. Which of the following is a common side effect of the drug metformin?
- A. Weight loss
- B. Weight gain
- C. Drowsiness
- D. Hypertension
Correct answer: A
Rationale: The correct answer is A, weight loss. Metformin is commonly associated with weight loss rather than weight gain. Metformin works by decreasing glucose production in the liver and improving insulin sensitivity, which can lead to weight loss in some individuals. Choices B, C, and D are incorrect. Weight gain is not a typical side effect of metformin. Drowsiness and hypertension are also not commonly associated with metformin use.
3. What are the expected manifestations of a thrombotic stroke?
- A. Gradual loss of function on one side of the body
- B. Loss of sensation in the affected extremity
- C. Sudden loss of consciousness
- D. Seizures and convulsions
Correct answer: A
Rationale: The correct answer is A: Gradual loss of function on one side of the body. Thrombotic strokes are caused by a clot forming in a blood vessel supplying the brain, leading to a gradual onset of symptoms due to impaired blood flow to specific brain regions. Choices B, C, and D are incorrect because loss of sensation, sudden loss of consciousness, seizures, and convulsions are not typically associated with thrombotic strokes. In a thrombotic stroke, the symptoms develop slowly over time, often over minutes to hours, and include manifestations such as weakness, numbness, or paralysis on one side of the body, along with other symptoms related to the affected brain area.
4. A client is receiving intermittent tube feedings and is at risk for aspiration. What should the nurse identify as a risk factor?
- A. A residual of 65mL 1 hour postprandial.
- B. History of gastroesophageal reflux disease.
- C. Receiving a high-osmolarity formula.
- D. Receiving a feeding in a supine position.
Correct answer: B
Rationale: The correct answer is B: History of gastroesophageal reflux disease. Gastroesophageal reflux disease increases the risk of aspiration due to the potential for regurgitation of stomach contents into the esophagus and airways. Choices A, C, and D are not directly related to an increased risk of aspiration. A residual of 65mL 1 hour postprandial may indicate delayed gastric emptying but is not a direct risk factor for aspiration. Receiving a high-osmolarity formula or receiving a feeding in a supine position are not specific risk factors for aspiration unless they contribute to reflux or other related issues.
5. Who typically collects blood specimens?
- A. The nurse
- B. Medical technologist
- C. Physician
- D. Pharmacist
Correct answer: A
Rationale: Nurses typically collect blood specimens from patients as part of their everyday duties in medical settings. They are trained in venipuncture techniques and are responsible for ensuring that blood samples are properly obtained and labeled for diagnostic testing. Medical technologists process and analyze the blood specimens in the laboratory under the direction of a physician, but the actual collection of specimens is commonly performed by nurses. Physicians are primarily responsible for diagnosing and treating medical conditions rather than collecting blood specimens. Pharmacists are healthcare professionals who specialize in medication management and dispensing, not in collecting blood specimens.