BACKGROUND: Thoracic epidural anaesthesia (TEA) is used widely in colorectal surgery. However, there is increasing concern that epidurals are associated with postoperative hypotension, mediating a potential reduction in splanchnic flow. The aim was to review the literature on the effects of TEA on splanchnic blood flow. METHODS: PubMed and Cochrane databases were searched. Search terms used were: English language, 'thoracic epidural splanchnic flow', 'thoracic epidural gut blood flow', 'thoracic epidural intestinal blood flow' and 'thoracic epidural colonic blood flow'. Abstracts were reviewed by two independent researchers and irrelevant studies excluded. The full text of the remaining articles was then retrieved. RESULTS: Twenty-two abstracts were reviewed and three excluded. Nineteen papers were reviewed in full and seven irrelevant articles excluded. Five human studies investigated the effects of TEA on splanchnic flow. Two studies measured splanchnic flow directly and found an epidural-mediated fall in flow, unresponsive to intravenous fluids and requiring vasopressors or inotropes to restore baseline flow. The remaining three studies had inconsistent findings and haemodynamic stability was maintained. The seven animal studies identified were heterogeneous in both methodology and findings. Three suggested a protective role for thoracic epidurals in septic shock and pancreatitis. CONCLUSION: These findings are inconsistent; however, the two studies that investigated the effects of vasoconstrictors on splanchnic blood flow directly both found a significant epidural-mediated reduction in splanchnic blood flow that was unresponsive to fluid therapy.
BACKGROUND: Thoracic epidural anaesthesia (TEA) is used widely in colorectal surgery. However, there is increasing concern that epidurals are associated with postoperative hypotension, mediating a potential reduction in splanchnic flow. The aim was to review the literature on the effects of TEA on splanchnic blood flow. METHODS: PubMed and Cochrane databases were searched. Search terms used were: English language, 'thoracic epidural splanchnic flow', 'thoracic epidural gut blood flow', 'thoracic epidural intestinal blood flow' and 'thoracic epidural colonic blood flow'. Abstracts were reviewed by two independent researchers and irrelevant studies excluded. The full text of the remaining articles was then retrieved. RESULTS: Twenty-two abstracts were reviewed and three excluded. Nineteen papers were reviewed in full and seven irrelevant articles excluded. Five human studies investigated the effects of TEA on splanchnic flow. Two studies measured splanchnic flow directly and found an epidural-mediated fall in flow, unresponsive to intravenous fluids and requiring vasopressors or inotropes to restore baseline flow. The remaining three studies had inconsistent findings and haemodynamic stability was maintained. The seven animal studies identified were heterogeneous in both methodology and findings. Three suggested a protective role for thoracic epidurals in septic shock and pancreatitis. CONCLUSION: These findings are inconsistent; however, the two studies that investigated the effects of vasoconstrictors on splanchnic blood flow directly both found a significant epidural-mediated reduction in splanchnic blood flow that was unresponsive to fluid therapy.
Authors: Donald E Low; William Allum; Giovanni De Manzoni; Lorenzo Ferri; Arul Immanuel; MadhanKumar Kuppusamy; Simon Law; Mats Lindblad; Nick Maynard; Joseph Neal; C S Pramesh; Mike Scott; B Mark Smithers; Valérie Addor; Olle Ljungqvist Journal: World J Surg Date: 2019-02 Impact factor: 3.352
Authors: Jeroen L A van Vugt; Kostan W Reisinger; Joep P M Derikx; Djamila Boerma; Jan H M B Stoot Journal: World J Gastroenterol Date: 2014-09-21 Impact factor: 5.742
Authors: A L M Tavy; A F J de Bruin; K van der Sloot; E C Boerma; C Ince; P G Noordzij; D Boerma; M van Iterson Journal: World J Surg Date: 2018-12 Impact factor: 3.352
Authors: Rikard Ambrus; Rune B Strandby; Niels H Secher; Kim Rünitz; Morten B S Svendsen; Lonnie G Petersen; Michael P Achiam; Lars B Svendsen Journal: BMC Anesthesiol Date: 2016-10-06 Impact factor: 2.217