Correct Answer: A

Rationale: The correct answer is to apply a hydrocolloid dressing. This type of dressing helps maintain a moist environment that is conducive to healing in stage 3 pressure ulcers. Providing wound debridement (choice B) is more suitable for higher stages of pressure ulcers where there is necrotic tissue. Changing the dressing daily (choice C) may be necessary but is not the primary action for a stage 3 pressure ulcer. Applying moist gauze (choice D) is not the recommended approach as it does not provide the same benefits as a hydrocolloid dressing.

Correct Answer: B

Rationale: The best position for a patient experiencing shortness of breath is the Semi-Fowler's position. This position promotes lung expansion and improves oxygenation by allowing the chest to expand more fully. The Supine position (lying flat on the back) may worsen breathing difficulties by reducing lung capacity. The Trendelenburg position (feet elevated higher than the head) is not recommended for patients with shortness of breath as it can increase pressure on the diaphragm and compromise breathing. The Prone position (lying face down) is also not suitable for patients experiencing shortness of breath as it may further restrict breathing.

Correct Answer: B

Rationale: An aPTT of 60 seconds indicates the client is receiving an effective dose of heparin. The activated partial thromboplastin time (aPTT) measures the time it takes for a clot to form, and a therapeutic range for heparin therapy is usually 1.5 to 2 times the control value, which is around 60-80 seconds. An INR of 1.5 is not related to heparin therapy, as it is commonly used to monitor warfarin therapy. Platelet count and potassium levels are not direct indicators of the effectiveness of heparin therapy.

Correct Answer: A

Rationale: The correct answer is hypokalemia. Loop diuretics can cause potassium depletion leading to hypokalemia, which is particularly concerning as it can result in cardiac arrhythmias. Hyponatremia (choice B) is not typically associated with loop diuretics. Hyperkalemia (choice C) is less common in patients on loop diuretics. Hypercalcemia (choice D) is not a typical electrolyte imbalance associated with loop diuretics.

Correct Answer: A

Rationale: Clients should avoid consuming any food or drink for 8 hours before the glucose tolerance test to ensure accurate results. Choice A is the correct instruction for the client preparing for a glucose tolerance test. Drinking water, taking an antacid, or consuming milk before the test can interfere with the accuracy of the results. Water or any other substance might affect the concentration of glucose in the blood, leading to inaccurate test results. Antacids and milk can also interfere with the test outcome. Therefore, the client should follow the instruction to fast for 8 hours before the test.