RESUMO
Objective: To investigate the hemostasis effect of hemocoagulase for injection in scalp incision in craniocerebral surgery, and evaluate its effect on coagulation function and drug safety. Methods: Before undergoing craniotomy, 60 patients were randomly divid-ed into the study group and the control group. The study group was injected with hemocoagulase for injection at 1u im at the night before surgery, 1u im 1h before incision and 1u im 15min before incision. The control group was injected with 0. 9% saline at the same time with the same volume. The hemorrhagic volume, hemorrhagic volume per square decimeter, hemostatic time, blood coagulation and ad-verse events were tested and compared between the groups. Results: In the study group, the mean hemorrhagic volume was (37. 18 ± 2. 96)g, the mean hemorrhagic volume per square decimeter was (0. 23 ± 0. 16)g·cm-2and the mean hemostatic time was (125. 53 ± 36. 42)s. In the control group, the corresponding value was (60. 69 ± 2. 30) g, (0. 42 ± 0. 25) g·cm-2and (182. 72 ± 52. 29) s, re-spectively. The hemorrhagic volume, hemorrhagic volume per square decimeter and hemostatic time significantly decreased in the study group when compared with those in the control group (P<0. 05). No significant difference in blood coagulation and safety (P>0. 05). No adverse event was reported. Conclusion: Hemocoagulase for injection shows promising hemostasis effect with high safety, which can ensure craniocerebral surgery going well with shortened operation time.
RESUMO
Objective: To study the attachment, proliferation and ALP activity of osteoblasts on Ti-24Nb-4Zr-7.9Sn(TNZS) alloy surface treated by microarc oxidation (MAO). Methods: The surface roughness and energy of TNZS before and after MAO treated was examined by physicochemical methods, and pure titanium used as control. The primary cultured osteoblasts separated from calvarium of fetal rats were cultured and the third passage osteoblasts were seeded on 3 different surfaces of Ti, TNZS, MAO-TNZS discs. Biological assays were performed by MTT method. All data were statistically analyzed. Results: The surface energy and roughness of MAO-TNZS was higher than that of other groups; during the initial period of the cell adhesion on the materials, there were no differences among the three teams. But after 2 h, the cells adhesions on the surface of Mao-TNZS were higher than that on smooth surface and Ti (P