RESUMEN
Objective To compare the effect of artianterior sacralia foramina block and sacral block on induced abortion.Mathods 263 women for induced abortion were randomly devided into three groups:the group for anteriora sacralia foramina block (n=95),the group for sacral block (n=90),the control group (n=78).Parameters before and after abortion measured include anesthesia area,skin of both legs and anus tempreture,blood pressure,pulse rate,resperatory rate,heart rate,clinical effect and VAS score.Results At 15 minutes after the anteriora sacralia foramina blocking,the anesthesia area involved distribution of medii clunium nerve,glacens nerve,puden-dus nerve,posterior femoris cutaneus nerve,ischiadicus nerve.The skin temperatures of both legs increased significantly (P＜0.01).Blood pressure,pulse rate,resperatory rate,and heart rate didn't vary markedly.The analgisia effect of anteriora sacralia foramina block was superior to sacral block.Conclusion The anteriora sacralia foramina block is simple,safe,effective,practical and can become a new approach for analgisia in induced abortion.