Objective To analyze the clinical effect of L-thyroxine combined with selenium yeast in patients with lymphocytic thyroiditis.Methods The clinical data of 96 patients with lymphocytic thyroiditis from March 2015 to September 2016 was analyzed retrospectively.The cases were divided into study group(48 cases)and control group(48 cases)according to double-blind method.The control group were treated with levothyroxine and the study group were treated with levothyroxine combined with selenium yeast.Free tetraiodothyronine(FT4),free triiodothyronine(FT3),thyrotropin(TSH),thyroglobulin antibody(TGAb),serum thyroid peroxidase antibody(TGAb)and serum thyroid peroxidase(TPOAb),the level of peripheral blood T cell subsets and the total effective rate between the two groups were compared.Results After treatment,the levels of FT4,FT3,TSH,TGAb and TPOAb in the two groups were significantly better than those before treatment(P<0.05).FT4,FT3,TSH,TGAb,TPOAb levels in the study group were significantly better than that in the control group(P<0.05).Compared with the control group,the T lymphocyte subsets of the study group after treatment were significantly better(P<0.05).Compared with the control group,the total effective rate of the study group was significantly higher(P<0.05).Conclusion The effect of L-thyroxine combined with selenium yeast in the treatment of lymphocytic thyroiditis patients is very significant.The treatment method is worthy of promotion in the clinical treatment.

BACKGROUND:The safety and efficacy of simultaneous bilateral total knee replacement or selective unilateral total knee arthroplasty in patients with severe osteoarthritis of the knees are stil controversial. OBJECTIVE:To compare safety and clinical efficacy of patients with osteoarthritis knees after simultaneous bilateral total knee replacement or selective unilateral total knee replacement. METHODS:Total y 60 cases with severe osteoarthritis of the knees (90 knees) undergoing total knee replacement were divided into unilateral total knee replacement group (n=30, 30 knees), and the simultaneous bilateral total knee replacement group (n=30, 60 knees). RESULTS AND CONCLUSION:There was no significant difference in the incidence of other complications such as infection, mortality, pulmonary embolism in patients of both groups (P>0.05). The incidence of cardiovascular complications, postoperative blood loss and blood transfusion were higher in the bilateral knee group than in the unilateral knee group (P<0.05). During fol ow-up at 1 year after replacement, no significant differences in range of motion, muscle strength of quadriceps and hospital for special surgery knee score were detected in patients of both groups (P>0.05). However, Visual Analogue Scale scores were significantly lower in the bilateral knee group than in the unilateral group (P<0.05). These data indicated that the risk of cardiovascular complications was high in patients receiving bilateral total knee replacement. Patients with severe cardiovascular disease should avoid simultaneous bilateral total knee arthroplasty.