[Subarachnoid anesthesia with minimal doses of lidocaine in ambulatory arthroscopic surgery of the knee].

The objective is demonstrate that subarachnoid anesthesia with 2% isobaric lidocaine at low doses (0.5 mg/kg) is safe and effective for outpatient arthroscopic surgery of the knee. This was a prospective study of 150 ASA I-III patients undergoing arthroscopic knee surgery as outpatients under subarachnoid anesthesia.