PT  - JOURNAL ARTICLE
AU  - Johannes B.M. Harbers
AU  - Hans Folgering
AU  - Mathieu J.M. Gielen
AU  - Marcel A.W.M. Hasenbos
AU  - Ris Dirksen
AU  - Cees Gort
TI  - Ventilatory Function and Continuous High Thoracic Epidural Administration of Bupivacaine with Sufentanil Intravenously or Epidurally: A Double-blind Comparison
AID  - 10.1136/rapm-00115550-199116020-00001
DP  - 1991 Mar 01
TA  - Regional Anesthesia: The Journal of Neural Blockade in Obstetrics, Surgery, & Pain Control
PG  - 65--71
VI  - 16
IP  - 2
4099  - http://rapm.bmj.com/content/16/2/65.short
4100  - http://rapm.bmj.com/content/16/2/65.full
SO  - Reg Anesth Pain Med1991 Mar 01; 16
AB  - Variables of ventilation were obtained preoperatively and during the first two postoperative days in 28 patients after thoracic surgery. All patients received 0.5% bupivacaine with epinephrine, 5 μg·ml−1 (5-10 ml), through an epidural catheter at the thoracic level supplemented by light general anesthesia. One hour after the initial dose of bupivacaine, patients were randomly allocated to one of two groups: an epidural (EP) sufentanil and an intravenous (IV) sufentanil group. Both groups received 0.125% bupivacaine via continuous epidural infusion postoperatively for three days. In addition, the EP group received 0.83 μg · ml−1 sufentanil added to the epidural infusion of 5-10 ml · hour−1, while the IV group received an identical dose of sufentanil via continuous intravenous infusion of 5-10 ml · hour−1. The ventilatory response to 5% CO2 was analyzed preoperatively and on postoperative Days 1 and 2. No significant depression in ventilatory response to CO2 could be detected by measurement of minute ventilation and mouth occlusion pressure at 100 milliseconds (P0.1). Pain measurement was assessed by blinded observers using the Inverse Visual Analog Scale, where 0 signifies most pain and 10 signifies least pain. The mean scores were above 7 in both groups and were attained at similar analgesic requirements. The incidence of side effects was not different. Only the initial mean sufentanil plasma levels in patients of the IV group were higher than those of the EP group. This study shows that the variables of ventilation were not affected by sufentanil administered via the epidural or the intravenous route, and that both techniques provided excellent pain relief when employed to supplement low-dose 0.125% bupivacaine epidurally.