Objective To investigate the clinical value of preset balloon in abdominal aorta in assisting cesarean section for patients with placenta previa complicated by placenta accreta.Methods Preset balloon in abdominal aorta was performed in 72 patients with placenta previa complicated by placenta accreta before cesarean section was carried out.Of the 72 patients,pernicious placenta previa (type A) was seen in 33,scar uterus,placenta previa with placenta accreta (type B) in 36 patients,and placenta previa complicated by placenta accreta with no cesarean section history (type C) in 3.The amount of blood loss during cesarean section,the course of uterine resection,the X-ray radiation dose in performing placement of balloon,and the procedure-related complications were recorded.Results The average amount of intraoperative blood loss in type A,B and C group was 1461 ml,947 ml and 533 ml,respectively.Subtotal hysterectomy was adopted in 9 patients and uterine repair in 32 patients.The average radiation doses in 17 patients who received preset balloon procedure in 2015 and in 55 patients who received preset balloon procedure in 2016 were (28.5±14.1) mGy and (3.7±2.5) mGy,respectively.During hospitalization period,one patient developed right superficial femoral artery thrombosis,one patient developed venous thrombosis of right lower extremity,and subcutaneous hematoma occurred in two patients.Conclusion Temporary occlusion of the abdominal aorta with preset balloon to assist the cesarean section for patients with placenta previa complicated by placenta accreta can effectively reduce the amount of intraoperative blood loss and markedly reduce hysterectomy rate.The procedure of preset balloon is simple,and the X-ray exposure time is short.Skilled and experienced manipulation can further reduce the incidence of complications.

Four unreported monoterpene indole alkaloids, tabernaecorymines B-E (1-4), together with twenty-one known indole alkaloids (5-25) were obtained from the stem bark of Tabernaemontana corymbosa. Their structures and absolute configurations were elucidated by extensive spectroscopy, quantum chemical calculations, DP4+ probability analyses and Mo₂(OAc)₄-induced electronic circular dichroism experiment. The antibacterial and antifungal activities of these compounds were evaluated and some of them showed significant activity against Staphylococcus aureus,Bacillus subtilis, Streptococcus dysgalactiae and Candida albicans.
Tabernaemontana ; Anti-Infective Agents ; Antifungal Agents ; Anti-Bacterial Agents ; Indole Alkaloids