What piece of extra equipment is important for a resident using an oxygen concentrator?

Correct Answer: D

Rationale: The correct answer is D: Nasal cannula. A resident using an oxygen concentrator needs a nasal cannula to deliver the oxygen from the concentrator to their lungs effectively. The nasal cannula is a lightweight, flexible tube that is placed in the nostrils to provide a continuous flow of oxygen. It ensures proper oxygen delivery and improves the resident's breathing. A portable oxygen tank (Choice A) is not necessary when using an oxygen concentrator, as the concentrator generates oxygen continuously. An irrigation catheter (Choice B) and a specimen container (Choice C) are not relevant to oxygen therapy and are not needed for a resident using an oxygen concentrator.

Correct Answer: D

Rationale: Step-by-step rationale for why the correct answer is D (Testosterone): 1. Testes are male reproductive glands. 2. They secrete testosterone, a male sex hormone. 3. Testosterone plays a crucial role in male sexual development and function. 4. It is responsible for the development of male reproductive tissues. Summary: A: Potassium - Not a hormone secreted by the testes. B: Progesterone - Female sex hormone, not secreted by the testes. C: Epinephrine - Hormone secreted by the adrenal glands, not the testes.

Correct Answer: B

Rationale: The correct answer is B: A reduced chance of pneumonia. Regular activity and exercise strengthen the respiratory muscles, improve lung function, and enhance overall respiratory health. This reduces the risk of infections such as pneumonia by improving the body's ability to fight off respiratory illnesses. Incorrect choices: A: An increased chance of infection - This is incorrect as regular activity and exercise actually boost the immune system, reducing the likelihood of infections. C: Diminished oxygen level - This is incorrect as exercise increases oxygen intake and improves oxygen delivery to the body's tissues. D: Decreased circulation - This is incorrect as exercise improves circulation, leading to better oxygen and nutrient delivery throughout the body.

Correct Answer: C

Rationale: Rationale: 1. Jaw dropping (option C) is a common occurrence post-mortem due to relaxation of jaw muscles. 2. Low blood pressure (option A) is not observable externally after death. 3. High fever (option B) is a physiological response, not a post-mortem change. 4. Perspiration (option D) ceases after death due to lack of metabolic activity.

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.