Helito Camilo Partezani, Junqueira Jader Joel Machado, Gobbi Ricardo Gomes, Angelini Fábio Janson, Rezende Marcia Uchoa, Tírico Luis Eduardo Passarelli, Demange Marco Kawamura, Mota e Albuquerque Roberto Freire da, Pécora José Ricardo, Camanho Gilberto Luis
Knee Surgery Department, Orthopaedic and Traumatology Institute, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil.
Clinics (Sao Paulo). 2014 Nov;69(11):735-9. doi: 10.6061/clinics/2014(11)05.
Healing is an event that is fundamental to the success of total knee arthroplasty. The aims of the present study were to compare the rates of complications related to wound healing between two groups of volunteers submitted to total knee arthroplasty and to evaluate the effects of postoperative oxygen supplementation by means of a nasal catheter.
A total of 109 patients who underwent total knee arthroplasty were randomized into two groups, namely, groups that did and did not receive postoperative oxygen supplementation via a nasal catheter. The surgical wound was monitored every day during the hospital stay and on the 7th, 14th, 21st, 30th and 42nd postoperative days. Characteristics related to healing were observed, including hyperemia, dehiscence, necrosis, phlyctenules and deep and superficial infection.
There were no cases of deep infection. Hyperemia was statistically correlated with the total number of complications in the groups, with oxygen demonstrated to be a protective factor against hyperemia. Approximately 30% of the patients who exhibited hyperemia had other complications, independent of oxygen supplementation.
Oxygen supplementation following total knee arthroplasty was shown to be effective in diminishing hyperemia around the operative wound. The development of hyperemia was a precursor to other complications, irrespective of whether oxygen supplementation was used.
愈合是全膝关节置换术成功的一项基本要素。本研究的目的是比较两组接受全膝关节置换术的志愿者伤口愈合相关并发症的发生率，并评估经鼻导管进行术后氧疗的效果。
总共109例行全膝关节置换术的患者被随机分为两组，即接受和未接受经鼻导管术后氧疗的组。在住院期间以及术后第7天、14天、21天、30天和42天每天对手术伤口进行监测。观察与愈合相关的特征，包括充血、裂开、坏死、小脓疱以及深部和浅表感染。
无深部感染病例。充血与各组并发症总数在统计学上相关，氧被证明是预防充血的保护因素。出现充血的患者中约30%有其他并发症，与是否进行氧疗无关。
全膝关节置换术后进行氧疗被证明可有效减轻手术伤口周围的充血。充血的发生是其他并发症的先兆，无论是否使用氧疗。
