Abstract

Objective To study the effect of hyperbaric oxygen treatment profile of 0.12 MPa (gauge pressure) on air decompression sickness (DCS). Methods The patients were divided into the 0.12MPa HBO treatment group and the control group. In the 0. 12 MPa HBO treatment group, 7 cases of DCS occurred in the tunnel workers during maintenance of tunnel borers in the hyperbaric air environment. Following onset of the illness, the 0.12 MPa HBO treatment profile was used to treat the cases. Ten cases of the control group were chosen from 7 articles in the Chinese Biomedical Database from 1994 to 2008. These cases of DCS occurred following exposure in the compressed air chamber and required decompression procedures. Then, they were treated at a pressure of 0. 15-0.50 MPa. Results All the 7 cases in the 0. 12 MPa HBO treatment group were cured with just 1 compression treatment. For those cases in the control group,2 cases recovered completely with just 1 compression treatment, while 8 cases had relapses following hyperbaric air compression treatment and finally also recovered with repeated compression treatment (including HBO therapy). Cure rate for first recompression in the 0.12 MPa treatment group was significantly higher than that of the control group (P <0.01). Conclusions For compressed air DCS cases that occurred despite compliance with required decompression procedures, early application of the 0. 12 MPa HBO treatment profile could achieve satisfactory results, and the therapeutic effect was obviously superior than that of the traditional recompression profile. Key words: Diving; Decompression sickness; Recompression therapy; Hyperbaric oxygen therapy

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