Neurological complications after anaesthesia. A follow-up of 18,000 spinal and epidural anaesthetics performed over three years.

17 733 consecutive central blocks (8501 spinal and 9232 epidural anaesthetics) performed during a three-year period were analyzed for alleged complications. Neurological complications related to anaesthesia were reported in 17 cases of which 13 patients had persisting lesions after three spinal and ten epidural blocks. In two patients given spinal anaesthesia, the technique was inadequate. In seven epidural blocks, the connection between neurological lesion and the anaesthetic technique could be argued. In five of these cases, polyneuropathy or nonspecific neurological symptoms were present. Three complications after epidural blocks were paraplegias caused by spinal haematomas in patients with deranged haemostatic capacity.