بررسی ارتباط نوع وسطح خونی مواد مخدر با طول مدت بی حسی نخاعی در بیماران وابسته به مواد افیونی

Comparison of the duration of spinal anesthesia in three groups opiates dependents, methadone user patients and non-dependent Evaluate the relationshipbetween blood levels of drug type and duration of spinal anesthesia in patients dependent on opiates