Correct Answer: B

Rationale: The presentation of knee pain and swelling following a fall onto a flexed knee, along with a palpable effusion and tenderness along the joint line, is highly suggestive of a meniscus injury. The McMurray's test specifically evaluates for meniscal tears. In this case, the presence of pain and clicking with passive knee flexion and internal rotation indicates a medial meniscus tear as the most likely diagnosis. Patellar tendinitis usually presents with anterior knee pain that is worsened by activities such as jumping or running. Lateral collateral ligament (LCL) sprain typically presents with lateral knee pain and instability. Quadriceps tendon rupture would present with significant weakness and inability to fully extend the knee, which is not described in this scenario.

Correct Answer: C

Rationale: If Jose is complaining of dyspnea despite continuous oxygen therapy, the nurse's initial intervention should be to assess the patency of the tubing delivering the oxygen. A blockage in the tubing could restrict the flow of oxygen to the patient, leading to inadequate oxygen delivery and worsening dyspnea. By ensuring the tubing is clear and functioning properly, the nurse can address a potential issue with oxygen delivery before considering other interventions like giving PRN medication or involving the physician. Re-assessing the patient would also be important after ensuring the tubing's patency to evaluate the effectiveness of the intervention.

Correct Answer: D

Rationale: Negligence refers to the failure to take proper care in doing something. In this scenario, the nurse failed to exercise the standard of care expected in placing a heating pad directly on Mr. C's lower leg, knowing his history of peripheral vascular disease. This failure led to a burn and subsequent infection that required a skin graft for treatment. The actions of the nurse were negligent as they did not meet the expected standard of care, resulting in harm to the patient. This situation does not fit the definition of assault, malpractice, or vicarious liability, making negligence the most appropriate choice.

Correct Answer: C

Rationale: Beta-adrenergic agonists stimulate beta-adrenergic receptors in the heart, leading to an increase in heart rate (tachycardia). This is a common adverse effect associated with the use of beta-adrenergic agonists in the management of conditions such as asthma. Monitoring for tachycardia is important because it can potentially lead to other complications such as palpitations, arrhythmias, and exacerbation of underlying cardiovascular conditions. It is essential for the nurse to closely monitor the patient for any signs or symptoms of tachycardia and report any abnormalities to the healthcare provider promptly to ensure appropriate management and prevent further complications.

Correct Answer: C

Rationale: This type of admission is considered voluntary because the patient willingly agrees to be admitted to the hospital for treatment. The patient has signed the admission forms and consented to receive the necessary care, indicating a willingness to participate in their treatment plan. In a voluntary admission, the individual retains the right to make decisions about their treatment and can choose to leave the hospital against medical advice if they wish to do so.