This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Negative pressure dressing is used for 
Select and explain. 
A. Removal of eschar, B. Chronic non-healing diabetic ulcer, C. Unexplored fistulas, D. Untreated osteomyelitis
B: Chronic non-healing diabetic ulcer
Answer: B: Chronic non-healing diabetic ulcer 
Explanation: Answer- B. Chronic non-healing diabetic ulcerNegative-pressure wound therapy (NPWT) is a therapeutic technique using a vacuum dressing to promote healing in acute or chronic wounds and enhance healing ofsecond and third degree burns.Use in the treatment of diabetes-associated chronic leg wounds.