3Maier RC, Control of postpartum hemorrhage with uterine packing[J]. Am J Obstet Gynecol, 1993,169(2 Pt 1):317-321.
4Vassilieff N,Rosencher N,Sessler DI,et al.The shivering threshold during spinal anesthesia is reduced in the elderly[J].Anesthesiology,1995,83:1162
5Tsai YC,Chu KS.A comparison of tramadol,amitriptyline,and meperidine for postepidural anesthetic shivering in parturients[J].Anesth Analg,2001,93(5):1288