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Objective: To discuss the new idea of on-the-spot recompression treatment and multidisciplinary treatment (MDT) for patients with unstable vital signs of type II decompression sickness. To provide reference for the nearby treatment of patients with critical decompression sickness. Methods: The clinical data of a case of a multi-disciplinary collaborative treatment of type II decompression sickness complicated with multiple organ dysfunction syndrome (MODS) admitted to a third-class A hospital in January 2020 were analyzed and summarized. Results: The patient suffered from consciousness disturbance and shock after 3 min of diver's blow-up out of the water. CT examination showed gas accumulation in the systemic multi-organ venous system, and laboratory examination suggested MODS. The oxygen inhalation regimen was given in the session of recompression treatmen by 0.12-0.18 MPa. Intravenous fluid was the total of 8900 ml in the session, and the total recompression treatment time was 9 h 45 min. The patient was still in unconscious when he finished the session. CT re-examination confirmed the elimination of venous bubbles, and laboratory examination indicated multiple organ failure (MOF) . The patient was given comprehensive supporting treatment by mechanical assisted breathing and following by continuons renal replacement therapy (CRRT) and extrocorporeal membrane oxygenation (ECMO) in the intensive care unit, and was discharged after 32 d of hospitalization. Conclusion: Critical decompression sickness patients with unstable vital signs are taken to a local general hospital with hyperbaric oxygen chamber and intensive care unit. The successful treatment can be achieved by organizing diving medicine, hyperbaric oxygen medicine and critical medical personnel for MDT.

Objective: To observe the therapic effects of the recompression treatment schedule D2 (breathing 100% oxygen at 0.12 MPa gauge pressure) on the type I decompression illness (DCI) by hyperbaric chamber pressurized with air., Methods: The recompression treatment schedule D2 was from the decompression treatment tables of in Germany BGI690. Seven cases on work site group (work site group) and five cases in hospital (hospital group) were treated using recompression treatment. All cases suffered from type I DCI after normal decompression procedures from working in compressed air in tunnel construction. These patients were treated with basic schedule D2 or extended schedule D2 according to the symptoms of the cases responded to recompression therapy., Results: In the work site group, the pains of joints, arms and legs were released quickly, the therapic effects appeared at (8.1 +/- 8.1) min, the cases were cured with a recompression therapy of basic schedule D2, the total mean time of treatment was (150 +/- 0.0) min. In the hospital group, the pains of joints, arms and legs disappeared slowly, the therapic effects appeared at (115.0 +/- 60.0) min, the cases were cured with a recompression therapy of extended schedule D2, the total mean time of treatment was (270.0 +/- 0.0) min, which was significantly longer than that in the work site group (P<0.01)., Conclusions: The treatment pressure is 0.12 MPa(gauge pressure) in schedule D2 with medical hyperbaric chamber pressurized with air,which can be used for treatment of type I DCI, the curative effects in the work site group are better than those in the hospital group.