Case report: difficult spinal anaesthesia for caesarian section in two obese pregnant patients.

Two obese patients presented for Caesarean Section for poor progress in labour. Spinal anaesthesia was chosen because of obesity, gravidity and worry about possible related airway problems in both patients. In both cases the needle seemed to be short. In case 1, no cerebrospinal fluid (CSF) was obtained, and she was subsequently done under General Anaesthesia (GA); in case 2, CSF was obtained when the needle was pressed firmly into the patients back but flow stopped if the pressure was released. These case reports serve to illustrate that although spinal anaesthesia for obese pregnant patients may seem the safer alternative, mechanical difficulty may be considerable and eventually a GA may be considered in spite of possible risk of difficult intubation.