ABSTRACT
Objective To evaluate the efficacy of acetate Ringer's solution for fluid therapy in the patients with dangerous placenta previa undergoing cesarean section. Methods One hundred fifty-two pa-tients, aged 22-41 yr, with body mass index of 20-30 kg/m2 , of American Society of Anesthesiologists physical status Ⅱ or Ⅲ, scheduled for elective cesarean section under general anesthesia, were allocated to 2 groups ( n=76 each) using a random number table method: acetate Ringer's solution group ( group AR) and lactated Ringer's solution group ( group LR) . Acetate Ringer's solution and lactated Ringer's so-lution 500 ml were intravenously infused at an initial rate of 15 ml·kg-1 ·h-1 followed by an infusion of 10 ml·kg-1·h-1 until patients leaved the operating room in two groups. Blood samples were collected from the left radial artery immediately before fluid replacement, at the end of fluid replacement and at 6 h after sur-gery for blood gas analysis. The development of arrhythmia was recorded during fluid replacement. The postpartum hemorrhage at 2 h after surgery was calculated. Results Compared with group LR, the Mg2+level was significantly increased and blood glucose was decreased at the end of fluid replacement, the inci-dence of arrhythmia was decreased ( P ＜ 0. 05) , and no significant change was found in each parameter of blood gas analysis at 6 h after surgery, postpartum hemorrhage at 2 h after surgery or consumption of ephed-rine in group AR ( P＞0. 05) . Conclusion Acetate Ringer's solution can be effectively used for fluid ther-apy, maintain the internal environment stable and prevent the occurrence of arrhythmia effectively during cesarean section in the patients with dangerous placenta previa.
ABSTRACT
Objective To investigate the different effect among ropivacaine,bupivacaine,lidocaine on analgesia after harvesting grafts from the scalp in burn patients. Methods 84 patients who need harvesting grafts from the scalp after burn were divided in 4 groups random-ly(n=21). Patients in group C hypodermically injected with saline 200 mL were control,while patients in group R injected with 0. 05% ropi-vacaine 200 mL,group B with 0. 188% bupivacaine,and group L with 0. 1% lidocaine. Motor activity assessment scale( MAAS) and visual analogue scale(VAS) were made before anesthesia(T0) and 20 min,5 h,10 h after awake of patients. VAS were made focus on head and body in part. Vital signs were also monitored and recorded for assessment of security. Results All patients in 4 groups had passed the period of operation safely. Patients in group R have better VAS than other groups. Conclusion Low concentration ropivacaine hypodermically injec-tion of head is helpful to relieve the pain after harvesting grafts from the scalp.