Correct Answer: A

Rationale: Beta-blockers are a class of medications commonly used to manage hypertension. One of the main mechanisms of action of beta-blockers is to reduce heart rate and contractility by blocking the beta-adrenergic receptors in the heart. As a result, one of the potential adverse effects of beta-blockers is bradycardia, which refers to a slower than normal heart rate. Therefore, the nurse should closely monitor the patient for signs and symptoms of bradycardia when starting or adjusting the dose of a beta-blocker. Symptoms of bradycardia may include dizziness, fainting, fatigue, or shortness of breath. If bradycardia is severe or symptomatic, it may require dose adjustments or discontinuation of the beta-blocker to prevent complications.

Correct Answer: B

Rationale: Molluscum contagiosum is a viral skin infection caused by the poxvirus. It typically presents as multiple dome-shaped, translucent papules with central umbilication on the face and trunk. The lesions are usually asymptomatic but can be itchy. Molluscum contagiosum is a common infection in children but can also occur in adults, especially those who are immunocompromised. The lesions can gradually increase in number over time. Basal cell carcinoma, sebaceous hyperplasia, and keratoacanthoma do not typically present with the characteristic features of molluscum contagiosum.

Correct Answer: C

Rationale: A profession is characterized by having a body of knowledge, a code of ethics, and engaging in research. However, being a member of a professional organization is not a defining characteristic of a profession. While many professionals may choose to join professional organizations for networking, support, and career advancement reasons, membership in such organizations is not universally required or exclusive to being considered a professional in a particular field. Hence, the presence or absence of professional organization membership does not determine the professional status of an individual.

Correct Answer: A

Rationale: Having a tracheostomy means that a patient has an artificial opening in their neck to help them breathe. Therefore, any issues related to breathing, such as blockages in the tracheostomy tube or difficulty in clearing secretions, can pose a major problem for a patient with a tracheostomy. It is crucial to monitor the patient's respiratory status closely and intervene promptly if any breathing difficulties arise to prevent potential respiratory distress or complications.

Correct Answer: D

Rationale: Scabies is caused by an infestation of the microscopic mite Sarcoptes scabiei. This parasitic mite burrows into the upper layer of the skin, where it lays eggs and causes intense itching and skin irritation. The transmission of scabies usually occurs through close and prolonged skin-to-skin contact with an infested person. Unlike viruses, bacteria, and fungi, which are microorganisms that can also cause skin infections, scabies specifically refers to an infestation by a parasitic mite.