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Effect of epidural blockade on indicators of splanchnic perfusion and gut function in critically ill patients with peritonitis: a randomised comparison of epidural bupivacaine with systemic morphine.

Abstract：

OBJECTIVES:(a) To measure gastric tonometry values in critically ill patients with peritonitis and to assess the impact of epidural analgesia on these values. (b) To assess the impact of epidural analgesia on gastro-intestinal motility by abdominal ultrasound and paracetamol absorption. (c) To observe any change in clinical outcome that may result from the use of epidural analgesia in such patients. DESIGN:A double-blinded, prospective, randomised and controlled study of general intensive therapy unit (ITU) patients. PATIENTS:Twenty-one patients admitted with peritonitis and adynamic small bowel following abdominal surgery were randomly allocated to receive either intravenous morphine or epidural bupivacaine for analgesia. MEASUREMENTS AND RESULTS:Gastric intramucosal pH (pHig) and the mucosal:arterial PCO2 gradient (Pg-PaCO2) were measured at admission and after 24 h of analgesia. Analysis of mean changes in tonometry values showed a rise in Pg-PaCO2 and a fall in pHig in the morphine group and a significant difference between groups in the Pg-PaCO2 trends (p = 0.024). Significant improvements in the ultrasound appearance of the small bowel were observed in the epidural group (p = 0.0037, Mann-Whitney U test of median changes in a locally developed scoring system). There were no significant differences between the groups in any of the variables derived from the paracetamol absorption test (n = 10); both groups showed persistently delayed gastric outflow throughout the study period. CONCLUSIONS:Epidural analgesia resulted in improvements in gastric mucosal perfusion and the ultrasound appearance of the small bowel, indicating potential clinical benefit in a group of patients in whom epidural catheterisation is traditionally contraindicated.

journal_name

Intensive Care Med

journal_title

Intensive care medicine

authors

Spackman DR,McLeod AD,Prineas SN,Leach RM,Reynolds F

doi

10.1007/s001340000671

keywords:

subject

Has Abstract

pub_date

2000-11-01 00:00:00

pages

1638-45

issue

eissn

0342-4642

issn

1432-1238

journal_volume

pub_type

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Effect of epidural blockade on indicators of splanchnic perfusion and gut function in critically ill patients with peritonitis: a randomised comparison of epidural bupivacaine with systemic morphine.