Correct Answer: B

Rationale: The presentation described is consistent with nummular eczema, also known as discoid eczema. Nummular eczema typically presents as circular or oval-shaped patches of eczematous rash with fine scaling and central clearing. It is often pruritic and can be triggered by exposure to irritants such as new soaps or laundry detergents. The distribution on the trunk and proximal extremities is also typical for nummular eczema. Tinea corporis (ringworm) would present with a more raised, scaly, and well-defined border with central clearing. Pityriasis rosea presents with a herald patch followed by smaller oval or round lesions in a "Christmas tree" distribution. Lichen planus would present with polygonal, purplish, flat-topped papules typically located on flexural surfaces and extremities.

Correct Answer: C

Rationale: For managing a conscious patient with a dislocated shoulder, the appropriate action is to provide analgesia to help manage the pain and discomfort associated with the dislocation. Applying ice packs to the affected shoulder can also help reduce swelling and provide some relief. It is important to refrain from attempting to reduce the dislocation by pulling on the affected arm, as this can cause further damage and worsen the injury. Applying a splint to immobilize the arm in the dislocated position is also not recommended, as this can lead to complications and hinder the reduction process. Administering intravenous fluids to prevent dehydration is not directly related to managing a dislocated shoulder in a conscious patient.

Correct Answer: A

Rationale: The priority nursing intervention for a woman in active labor diagnosed with postpartum hemorrhage (PPH) due to uterine atony is to massage the uterus to promote contraction. Uterine massage helps to stimulate uterine muscle tone and contraction, which can help control bleeding by reducing the size of blood vessels and promoting hemostasis. It is important to address the uterine atony promptly to prevent further blood loss and stabilize the patient's condition. Other interventions such as blood transfusion, administering antibiotics, and elevating the mother's legs can be considered based on the patient's response to the initial intervention of uterine massage.

Correct Answer: D

Rationale: Acute respiratory distress syndrome (ARDS) is a severe condition characterized by widespread inflammation in the lungs leading to increased pulmonary vascular permeability, non-cardiogenic pulmonary edema, and respiratory failure. In ARDS, the alveolar-capillary barrier is disrupted, resulting in fluid accumulation in the alveoli and impaired gas exchange.

Correct Answer: A

Rationale: The sudden onset of severe vertigo, nausea, vomiting, and nystagmus in a patient with a recent upper respiratory tract infection is highly suggestive of vestibular neuritis. Vestibular neuritis is typically caused by inflammation of the vestibular nerve, often following a viral infection such as an upper respiratory tract infection. This condition presents with acute, severe, continuous vertigo without associated hearing loss. The presence of nystagmus, along with the absence of hearing loss, helps differentiate vestibular neuritis from Meniere's disease (which typically presents with episodic vertigo, hearing loss, and tinnitus) and acoustic neuroma (which presents with gradual onset of symptoms including unilateral hearing loss, tinnitus, and imbalance). Benign paroxysmal positional vertigo (BPPV) typically presents with brief episodes of vertigo triggered by specific head movements, rather than the continuous vertigo seen in this case.