Adult Health 1 Exam 1

Correct Answer: C

Rationale: The correct answer is C: Decreases hepatic glucose production. Metformin primarily works by reducing the production of glucose in the liver (hepatic glucose production) and by improving insulin sensitivity in various tissues. Choice A is incorrect as metformin does not stimulate insulin secretion from the pancreas. Choice B is incorrect as metformin increases insulin sensitivity in various tissues, not just muscle cells. Choice D is incorrect as metformin does not delay glucose absorption from the intestines.

Correct Answer: C

Rationale: The correct intervention for the nurse to implement is to add sterile water to the suction control chamber. This action helps maintain the proper functioning of the chest tube system by regulating the negative pressure. Increasing wall suction is not recommended as it could lead to excessive negative pressure. Giving blood from the collection chamber as autotransfusion is inappropriate and poses a risk of complications such as air embolism. Manipulating blood in the tubing is also unsafe as it could introduce air into the system, increasing the risk of complications for the client.

Correct Answer: B

Rationale: The most important instruction for a client with tuberculosis (TB) is to take all prescribed medications as directed. This is crucial to prevent the development of drug-resistant TB. While avoiding close contact with others until treatment is complete (Choice A) is important to prevent the spread of TB, ensuring the client completes the prescribed medication regimen is the priority. Scheduling a follow-up appointment (Choice C) is important for monitoring but not as critical as medication adherence. Wearing a mask in public places (Choice D) can help reduce the spread of TB but is not as essential as taking medications as prescribed.

Correct Answer: A

Rationale: The correct answer is A, Phlebitis. Phlebitis is the inflammation of a vein, often caused by irritation from an IV catheter, resulting in warmth, redness, and swelling at the site. Infiltration (choice B) refers to the leaking of IV fluids into the surrounding tissues, causing swelling and pallor, not redness and warmth like in the scenario described. An allergic reaction (choice C) would present with itching, hives, or anaphylaxis, rather than localized warmth, redness, and swelling. Fluid overload (choice D) typically manifests as generalized edema, shortness of breath, and weight gain, not localized symptoms at the IV site.

Correct Answer: A

Rationale: Pursed-lip breathing is a characteristic finding in clients with COPD. It helps keep the airways open during exhalation, acting as a compensatory mechanism to prevent airway collapse, which is common in COPD. Hyperresonance on percussion is typically found in conditions like emphysema, which is a component of COPD but not characteristic of the overall disease. Bradycardia is not typical in COPD; instead, clients often exhibit tachycardia due to chronic hypoxemia. High-pitched inspiratory crackles are more commonly associated with conditions like pneumonia, not COPD.