Local signs of wound infection consist of pain and tenderness, swelling, warmth, and erythema.

伤口感染的局部征象是疼痛，压痛，肿胀，发热，以及红斑。

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The factors of failure were disturbance of local blood circulation, wound infection followed rib necrosis, T-tube injured mucomembrane then became a new stenosis, and restenosis for scar constitution.

局部皮肤血循环差（大剂量放射治疗后，反复多次手术局部瘢痕重） ，伤口感染软骨坏死排出，T形管损伤黏膜形成新的瘢痕狭窄和瘢痕体质。

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AIM: to observe the local hemostasis, analgesia, anti-infection and healing effects of multifunctional wound dressing based on isobutyl-chitosan, which is derived from chitosan.

目的：观察以壳聚糖衍生物-异丁基壳聚糖为基质材料的多功能创面敷料的局部止血、镇痛、抗感染和促愈合作用。

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