OBJECTIVE:To prepare and appraise eucalyptus oil?-cyclodextrin inclusion compound,and to testify the feasibility of transforming the dosage form of eucalyptus oil by clathration techniques.METHODS:The physicochemical properties of inclusion compound was identified by thin-layer chromatography(TLC),infrared spectroscopy(IR),ultra-violet spectroscopy(UV)and gas chromatograph mass spectrometer(GC-MS),respectively.Meanwhile,the changes in constituents and clathration outcomes of eucalyptus oil before and after clathration were also investigated.RESULTS:The analytic result of TLC,IR and UV showed that stable inclusion compound has been formed from eucalyptus oil and?-cy?clodextrin.The result of GC-MS demonstrated that there was no significant change in the essential components and the percentage composition of eucalyptus oil before and after inclusion.CONCLUSION:Stable inclusion compound can be made from eucalyptus oil and?-cyclodextrin meanwhile without changes in main components and the percentage composition of eucalyptus oil.

Objective To investigate hemodynamic changes of deep vein in lower limb during the perioperative period of total hip arthroplasty (THA) and early diagnosis of deep vein thrombosis (DVT). Methods Doppler ultrasound, hemorheology detection and plasma D-dimer testing were done on 62 patients treated with THA. Statistical analysis was carried out on the data of patients with or without DVT to study the early diagnosis of DVT. Results The results of Doppler ultrasound showed DVT in 8 patients. Compared with postoperative concentration of plasma D-dimer, the preoperative con-centration of plasma D-dimer was significandy higher in patients with or without DVT (P < 0.05). The levels of hemorheological indices were significantly increased at postoperative day 7 (P < 0.05). Con-clusions Doppler ultrasound combined with plasma D-dimer testing and hemorheology detection are helpful in early diagnosis of DVT.