RESUMEN
Remifentanil, an ultra-short acting opioid, exhibits at low doses distinct sedative properties that may be useful for supplementation of regional or local anesthesia. We described two patients suffered from serious underlying medical problems who underwent unilateral inguinal herniorrhaphy. One of them was 61 year-old male patient who had type B viral hepatitis, Child class B liver cirrhosis and rheumatoid arthritis with severe joint deformity including instability of cervical vertebrae. The other patient was 73 year-old man who had severe coronary artery occlusive disease which was recently managed with coronary stent and was underwent hemodialysis three times a week due to chronic renal failure. Monitored anesthesia care (MAC) with remifentanil through target controlled infusion (TCI) and local infiltration and ilioinguinal-hypogastric nerve block (IHNB) were done for herniorrhaphy. The operations were performed successfully without any complications such as respiratory depression or hypoxia and all patients and surgeon were very satisfied with MAC.