Correct Answer: A

Rationale: The correct answer is A. Blood type A is considered the rarest because it is less common in the general population compared to other blood types. The rarity of blood type A is due to the combination of genetic factors that determine blood type. In contrast, blood types B and O are more common in the population, while blood type AB is considered the universal recipient type and is therefore not the rarest. Blood type A is less prevalent, making it the correct answer in this scenario.

Correct Answer: A

Rationale: The correct answer is A: take a hot tub bath or shower in the morning. This is effective as the warm water helps to relax muscles and joints, reducing stiffness. It also improves circulation, which can alleviate morning stiffness in patients with rheumatoid arthritis. Incorrect choices: B: Putting joints through passive ROM before active movement may exacerbate stiffness if not done properly. C: Sleeping with a hot pad may provide temporary relief but does not address the root cause of morning stiffness. D: Taking aspirin can help with pain but does not directly address stiffness. Waiting 15 minutes before moving may not be as effective as soaking in warm water.

Correct Answer: B

Rationale: Rationale: 1. NPH insulin peaks in 4-12 hours, making 4:00 PM the highest risk time. 2. 10:00 AM is too soon for peak effect. 3. Noon is too early for peak effect. 4. 10:00 PM is too late for peak effect. In summary, B is correct as it aligns with NPH insulin peak time, while other options are too early or too late.

Correct Answer: A

Rationale: Step 1: Pulmonary edema is caused by fluid accumulation in the lungs due to increased pressure in the pulmonary vasculature. Step 2: Decreased left ventricular pumping leads to congestive heart failure, causing increased pressure in pulmonary circulation. Step 3: This increased pressure forces fluid from the capillaries into the alveoli, causing pulmonary edema. Step 4: Increased left atrial contractility (B) would not directly lead to pulmonary edema. Step 5: Decreased right ventricular elasticity (C) and increased right atrial pressure (D) are not directly related to the pathophysiology of pulmonary edema. Summary: The correct answer is A because decreased left ventricular pumping directly contributes to the increased pressure in the pulmonary circulation that leads to pulmonary edema. Choices B, C, and D do not align with the primary underlying disorder of pulmonary edema.

Correct Answer: A

Rationale: The correct answer is A: Urine output increased. Furosemide is a loop diuretic that works by increasing urine output, thus helping to reduce fluid volume in the body. This effect is crucial in managing conditions like heart failure and edema. Increased urine output indicates that the medication is working as intended. Choice B: Heart rate increased is incorrect as furosemide does not directly affect heart rate. Choice C: Serum potassium decreased is incorrect as furosemide can lead to potassium loss, but this is not the primary indicator of its effectiveness. Choice D: Pulse pressure increased is incorrect as furosemide does not typically impact pulse pressure.