For nearly two decades anesthesiologists and obstetricians have turned to this handbook as the definitive reference for obstetric anesthesia. For nearly two decades anesthesiologists and obstetricians have turned to this handbook as the definitive reference for obstetric anesthesia authoritative yet . For nearly two decades anesthesiologists and obstetricians have turned to this handbook as the definitive reference for obstetric anesthesia. As the field of obstetric anesthesia continues to change rapidly both in technique and in specific pharmaceutical agents used it is essential for all practitioners . As the field of obstetric anesthesia continues to change rapidly both in technique and in specific pharmaceutical agents used it is essential for all