ABSTRACT
Objective To evaluate radiofrequency ablation (RFA) assisted splenic preservation in traumatic splenic rupture.Methods Data of 70 cases with traumatic rupture of the spleen at our hospital from Septembcr 2009 to June 2014 were retrospectively analysed.Patients were divided into two groups according to different surgical methods,namely,RFA group (n =35) and control conventional surgery group (n =35).Results In the RFA group,34 cases underwent successful spleen preserving operation,the success rate was 97％.In control group,26/35 cases received splenic preservation operations successfully,the success rate was 74％ (26/35) (x2 =7.467,P ＜ 0.05).Average operation time,bleeding during operation and intra-operative transfusion in RFA group were (80 ± 22) min,(116 ± 66) ml and 5 cases,rcspectively,significantly better than that in control of group.(122 ± 80) min,(237 ± 192) ml and 13 cases,respectively (t =4.58,t =3.324;x2 =4.786,P ＜ 0.05).Postoperative bleeding,hospital stay and cases receiving transfusion in RFA group were (113 ± 72)ml,(7.8 ± 1.2) d and 2 cases,respectively,which were remarkably better than those in control group of (246 ± 140) ml,(10.2 ± 1.6) d and 8 cases (t =3.267,t =4.536;x2 =4.9;P ＜ 0.05).Postoperative complications in the two groups were similar (x2 =0.913,P ＞ 0.05).Conclusions Compared with traditional spleen preserving surgery,RFA is simple and effective.It can greatly reduce the difficulty and risks of splenic preservation surgery,increasing the preservation of ruptured spleen.
ABSTRACT
10 male subjects participated in the environmental simulation study to evaluate the operation ergonomics at high-temperature in the cockpit. Grip strength, perception, dexterity, reaction and intelligence were measured respectively during the tests at 40 degrees C and 45 degrees C, simulating the high-temperatures in a simulation cockpit chamber. Then the data obtained were compared to the combined index of heat stress (CIHS). The average values of each item of the subjects' performance at the two different temperatures are compared. The results indicated that CIHS exceeded the heat stress safety line after 45 min at 40 degrees C, grip strength decreased by 12%, and perception increased by 2.89 times. In contrast, at 45 degrees C, CIHS exceeded the safety line after 20 min, grip strength decreased by 3.2%, and perception increased by 4.36 times. However, Finger dexterity was less affected. Reaction ability was first accelerated, and then slowed down. The error rate in the intelligence test increased to a greater extent. At the high temperatures, the minimum perception was the most affected, followed by grip strength, reaction and finger dexterity were less affected, while the intelligence did not decline, but rise.