Correct Answer: B

Rationale: The brown pigmentation of the lower extremities in clients with venous stasis is primarily caused by the breakdown of red blood cells in the congested tissues. When there is venous stasis, the blood circulation is impaired, leading to a backup of blood in the lower extremities. This stagnant blood contains hemosiderin, a byproduct of red blood cell breakdown. Over time, the hemosiderin deposits in the tissues, causing the characteristic brown discoloration seen in conditions such as chronic venous insufficiency. This process is known as hemosiderin deposition and is a common consequence of venous stasis.

Correct Answer: B

Rationale: The brown pigmentation of the lower extremities in clients with venous stasis is primarily caused by the breakdown of red blood cells in the congested tissues. When there is venous stasis, the blood circulation is impaired, leading to a backup of blood in the lower extremities. This stagnant blood contains hemosiderin, a byproduct of red blood cell breakdown. Over time, the hemosiderin deposits in the tissues, causing the characteristic brown discoloration seen in conditions such as chronic venous insufficiency. This process is known as hemosiderin deposition and is a common consequence of venous stasis.

Correct Answer: C

Rationale: Ensuring that the nasogastric tube is functioning is the most important nursing action when caring for a patient with a paralytic ileus. A paralytic ileus is a condition where there is a temporary paralysis of the intestine, leading to a lack of bowel motility. This can result in a buildup of gas and fluids in the intestines, causing abdominal distension, pain, and potential complications.

Correct Answer: A

Rationale: The priority action for the nurse before initiating discharge teaching with a client with diabetes and a large wound is to assess the client's current knowledge regarding dressing changes. This step is crucial as it helps the nurse to understand the client's baseline understanding and skills related to wound care, which will guide the teaching process effectively. By asking the client to state what they know about the current dressing changes, the nurse can identify any knowledge gaps or misconceptions that need to be addressed. This assessment will ensure that the teaching is tailored to the client's specific needs and promotes successful wound healing and overall diabetes management.

Correct Answer: B

Rationale: Paroxysmal nocturnal dyspnea is a symptom commonly seen in patients with congestive heart failure (CHF). It is characterized by sudden awakening from sleep due to difficulty breathing and feeling of suffocation. This occurs because when the patient lies down, the redistribution of fluid in the body leads to increased fluid in the lungs, causing difficulty in breathing. Patients with CHF often experience worsening of symptoms at night, including paroxysmal nocturnal dyspnea, due to the shift in fluid dynamics in a supine position. Therefore, the client in this scenario is likely experiencing paroxysmal nocturnal dyspnea, a classic symptom of heart failure exacerbation.