Correct Answer: C

Rationale: Anterior cruciate ligament (ACL) reconstruction is a common surgical procedure performed to repair a torn ACL. This procedure involves replacing the damaged ACL with a graft, often using a portion of the patient's own patellar tendon, hamstring tendon, or an allograft (donor tissue). ACL reconstruction is typically indicated for patients with ACL tears that result in knee instability and functional limitations, especially in active individuals who participate in sports or activities requiring pivoting and cutting movements. Arthroscopic surgery is commonly used to perform ACL reconstruction, allowing for smaller incisions and faster recovery compared to traditional open surgeries. Post-operative rehabilitation and physical therapy are crucial components of the recovery process following ACL reconstruction surgery to optimize outcomes and return to pre-injury activity levels.

Correct Answer: B

Rationale: Validity refers to the extent to which a test accurately measures what it is intended to measure. In the context of screening tests for diseases, validity is crucial in assessing whether the test can correctly distinguish between individuals who have the disease (true positives) and those who do not have the disease (true negatives). This includes the ability to minimize false positives (incorrectly identifying someone as having the disease) and false negatives (incorrectly identifying someone as not having the disease). Therefore, when assessing the ability of a screening test to distinguish correctly between persons with and without a disease, we are essentially evaluating its validity.

Correct Answer: D

Rationale: Filipinos have generally low awareness about osteoporosis. Despite the increasing number of cases in the country, many Filipinos still lack knowledge about the disease and its risk factors. Osteoporosis is a significant health concern in the Philippines, especially among the elderly population, but there is still a need for more education and awareness campaigns to improve prevention and management strategies.

Correct Answer: C

Rationale: Hypokalemia (low levels of potassium) increases the risk of digoxin toxicity. This is because digoxin competes with potassium for binding sites on the sodium-potassium ATPase pump in the cell membrane. When potassium levels are low, there is an increased binding of digoxin to these pumps, leading to enhanced entry of calcium into the cells. This can result in an increased intracellular calcium concentration, leading to digoxin toxicity and potential cardiac arrhythmias. Therefore, monitoring and correcting potassium levels is crucial in patients prescribed digoxin to reduce the risk of toxicity.

Correct Answer: C

Rationale: The nurse should reposition the patient to alleviate pressure on vulnerable areas. Pressure injuries can develop when there is prolonged pressure on specific areas of the skin, leading to reduced blood flow and tissue damage. Repositioning the patient helps to relieve the pressure and prevent the development of pressure injuries. Applying a pressure-relieving device may also be helpful, but the immediate action should be to reposition the patient to address the issue. Documenting the observation is important for documentation purposes, but the priority is to take action to prevent harm to the patient. Continuing with the positioning as planned without addressing the inadequate skin protection could lead to the development of pressure injuries, which should be avoided.