Objective To evaluate RNPT technology in the treatment of chronic ulcer clinical effect and summary treatment experience.Methods From 2014.1 to 2014.12, to select 30 burn orthopaedic patients in our hospital with RNPT treatment as experimental group, and 30 burn orthopaedic patients with normal treatment as control group,evaluation of wound healing in patients with symptom and sign integral.Results Switching frequency (5.8±1.4), carrion purification time (11.7±2.1) d, ulcer surface granulation growth time (17.1±1.8) d, wound epithelial time (28.4±5.7) d, negative pressure treatment (4.3±1.0) points, discharge rate 6.67% was lower than one before treatment 30%;1~12 months after treatment,there wasn’t sequelae; 2 groups patients’ number of ulcer, ulcer area, the depth of the ulcer, students of granulation tissue, epithelial tissue, the granulation of colour and lustre, gen margin of colour and lustre, ulcer surface of bitterness, pus necrosis, skin temperature, nature, and necrotic material quantity, the total score were lower than ones before the treatment, experimental group was lower than the control group, difference has statistical significance (P<0.05). ConclusionRNPT is better curative effect on chronic ulcer, indications, operation simple, and can fuly improve the symptoms and signs.%目的：评价RNPT技术治疗慢性溃疡临床疗效，总结治疗经验。方法2014年1月～2014年12月，新疆石河子大学医学院第一附属医院烧伤整形科就诊住院以RNPT治疗慢性溃疡30例，纳入实验组，另选30例纳入对照组采用常规换药治疗，以症状体征积分量表评价患者创面愈合情况。结果换药次数（5.8±1.4）次、腐肉净化时间（11.7±2.1）d、溃疡面肉芽生长时间（17.1±1.8）d，创面上皮化时间（28.4±5.7） d、负压治疗期间疼痛峰值（4.3±1.0）分，分泌物阳性率6.67%低于治疗前30.00%；治愈后，随访1～12个月，无后遗症；末次换药，实验组与对照组溃疡数量、溃疡面积、溃疡深度、新生肉芽组织、新生上皮组织、肉芽色泽、创缘色泽、溃疡面触痛、脓液、肤温、坏死物性质、坏死物量、总积分低于治疗前，实验组低于对照组，差异具有统计学意义（P＜0.05）。结论 RNPT治疗慢性溃疡疗效较好，适应证广，操作简单，可全面改善症状与体征。
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