Omega-3 Fatty Acids and Postoperative Complications After Colorectal Surgery (omega3)

• ClinicalTrials.gov Identifier: NCT00488904
• Recruitment Status: Completed
• First Posted: June 20, 2007
• Last Update Posted: April 12, 2010
• Sponsor: Aalborg University Hospital
• Information provided by: Aalborg University Hospital

Study Description

Brief Summary:

To discover whether an Omega-3 fatty acid (eicosapentaenoic acid/EPA and docosahexaensyre/DHA) enriched nutritional supplement given 7 days preoperatively and 7 days postoperatively may reduce the frequency of postoperative infectious complications defined as: pneumonia, wound infection, urinary tract infection, peritonitis (including anastomotic leakage) and septic conditions of any cause in patients who undergo elective operations for colorectal cancer compared with a nutritional preparation that is identical apart from the EPA content.

Condition or disease	Intervention/treatment	Phase
Colorectal Cancer	Dietary Supplement: supportan; Dietary Supplement: supportan placebo	Phase 4

Detailed Description:

Several earlier studies indicate that perioperative supplements of Omega-3 fatty acids can reduce the risk of postoperative complications after major surgery through an immune modulating effect in the form of a downward adjustment of the inflammatory response. (1-7) The interpretation of these studies is made more difficult by differences in their method of administration (parentally/enterally), differences in the time of the intervention (preoperative/postoperative) and differences in the selection of patients (malnourished cancer patients / upper GI cancer patients/mixed surgical patients) and finally because many of the studies deal with a so-called immune modulating preparation containing a mixture of arginine, Omega-3 fatty acids and ribonucleic acid.

The biological effects of fish oils are related to their content of such things as Omega-3 fatty acids that can be incorporated in cell membranes where they influence receptor function, enzyme activity and the production of lipid mediators. The cells from the immune system perform their functions through membrane-associated activities like secretion of cytokines, antibodies, lymphocyte transformation and contact lysine. These functions can be affected by changes in the membrane structure. (7;8) Besides the effect parameter of postoperative septic complications, many of these studies use pseudoparameters such as length of stay, need for respirator treatment, time in intensive care as well as a wide range of biochemical changes whose relevance to the clinic process can be difficult to assess. (1-7;9-13;). It is well-known that early enteral nutrition reduces the risk of postoperative complications (14; 15). Many of the aforementioned studies similarly point to a benefit from using Omega-3 fatty acid enriched nutritional preparations preoperatively. There is now a commercially manufactured nutritional preparation for peroral consumption containing Omega-3 fatty acids - Supportan (Fresenius-Kabi). The preparation is more energy intensive than similar drink preparations, but does not otherwise differ in composition from standard preparations. It is approved by the Danish Veterinary and Food Administration for this study.

In 2 x 200ml of Supportan 3 g EPA and DHA are given daily. In other studies up to 10 g have been given daily without side effects. (6; 16)

Study Design

• Study Type: Interventional (Clinical Trial)
• Actual Enrollment: 148 participants
• Allocation: Randomized
• Intervention Model: Parallel Assignment
• Masking: Double (Participant, Investigator)
• Primary Purpose: Prevention
• Official Title: Omega-3 Fatty Acids and Postoperative Complication After Colorectal Surgery
• Study Start Date: June 2007
• Actual Primary Completion Date: January 2010
• Actual Study Completion Date: February 2010

Arms and Interventions

Arm	Intervention/treatment
Experimental: a	Dietary Supplement: supportan; 2 sip feed pr. day
Placebo Comparator: b	Dietary Supplement: supportan placebo; 2 sip feed pr. day

Outcome Measures

Primary Outcome Measures :

1. In previous studies a complication frequency (infectious complications) of at least 30% was found for this type of operation (14; 17) This figure has to be reduced to 10% (MIREDIF = 20%). [ Time Frame: 1 year ]

   Primary outcome measures are infectious complications after surgery for colorectal cancer defined as: pneumonia, cystitis, wound infection, intraabdominal abscess, peritonitis, septicemia, other infections.

   30 day mortality and other complications such as bleeding, wound dehiscence, anastomotic leakage will also be registered

Secondary Outcome Measures :

1. The secondary outcome variable is hospitalisation time and mortality. Given the material's size, it is not expected to be possible to demonstrate a significant reduction in mortality [ Time Frame: 1 year ]
2. incorporation of fatty acids in cell membranes [ Time Frame: after 7 days of intervention ]
   laboratory test on blood sample (leucocytes
3. development in interleukins after surgery [ Time Frame: day 1-4 after surgery ]
   analysis of blood sample
4. lenght of stay in hospital

Eligibility Criteria

• Ages Eligible for Study: Child, Adult, Older Adult
• Sexes Eligible for Study: All
• Accepts Healthy Volunteers: No

Criteria

Inclusion Criteria:

• Adult patients for elective colorectal resection for cancer, ASA group 1-3 (see annex)

Exclusion Criteria:

• Diabetes Mellitus
• Alcohol consumption > 5 drinks per day
• Acute operation
• Non Danish speakers
• Patients with untreated psychiatric conditions
• Pregnant or breast-feeding women
• Patients with ICD-pacemaker
• Patients with reduces kidney function and immunosuppressed patients
• patients that eat or drink omega-3 fatty acids
• patients operated for 2 different cancers in 1 operation

Contacts and Locations

Locations

Denmark

Aalborg Hospital

Aalborg, Denmark, 9000 Aalborg

Sponsors and Collaborators

Aalborg University Hospital

Investigators

• Study Director: Erik be schmidt, professor; Aalborg Hospital the lipid clinic

More Information

Publications:

Braga M, Gianotti L, Vignali A, Cestari A, Bisagni P, Di Carlo V. Artificial nutrition after major abdominal surgery: impact of route of administration and composition of the diet. Crit Care Med. 1998 Jan;26(1):24-30.

Braga M, Gianotti L, Nespoli L, Radaelli G, Di Carlo V. Nutritional approach in malnourished surgical patients: a prospective randomized study. Arch Surg. 2002 Feb;137(2):174-80.

Gianotti L, Braga M, Vignali A, Balzano G, Zerbi A, Bisagni P, Di Carlo V. Effect of route of delivery and formulation of postoperative nutritional support in patients undergoing major operations for malignant neoplasms. Arch Surg. 1997 Nov;132(11):1222-9; discussion 1229-30.

Schilling J, Vranjes N, Fierz W, Joller H, Gyurech D, Ludwig E, Marathias K, Geroulanos S. Clinical outcome and immunology of postoperative arginine, omega-3 fatty acids, and nucleotide-enriched enteral feeding: a randomized prospective comparison with standard enteral and low calorie/low fat i.v. solutions. Nutrition. 1996 Jun;12(6):423-9.

Senkal M, Mumme A, Eickhoff U, Geier B, Späth G, Wulfert D, Joosten U, Frei A, Kemen M. Early postoperative enteral immunonutrition: clinical outcome and cost-comparison analysis in surgical patients. Crit Care Med. 1997 Sep;25(9):1489-96.

Tsekos E, Reuter C, Stehle P, Boeden G. Perioperative administration of parenteral fish oil supplements in a routine clinical setting improves patient outcome after major abdominal surgery. Clin Nutr. 2004 Jun;23(3):325-30. Erratum in: Clin Nutr. 2004 Aug;23(4):755-6.

Weiss G, Meyer F, Matthies B, Pross M, Koenig W, Lippert H. Immunomodulation by perioperative administration of n-3 fatty acids. Br J Nutr. 2002 Jan;87 Suppl 1:S89-94.

Wachtler P, König W, Senkal M, Kemen M, Köller M. Influence of a total parenteral nutrition enriched with omega-3 fatty acids on leukotriene synthesis of peripheral leukocytes and systemic cytokine levels in patients with major surgery. J Trauma. 1997 Feb;42(2):191-8.

Braga M, Vignali A, Gianotti L, Cestari A, Profili M, Di Carlo V. Benefits of early postoperative enteral feeding in cancer patients. Infusionsther Transfusionsmed. 1995 Oct;22(5):280-4.

Di Carlo V, Gianotti L, Balzano G, Zerbi A, Braga M. Complications of pancreatic surgery and the role of perioperative nutrition. Dig Surg. 1999;16(4):320-6.

Heslin MJ, Latkany L, Leung D, Brooks AD, Hochwald SN, Pisters PW, Shike M, Brennan MF. A prospective, randomized trial of early enteral feeding after resection of upper gastrointestinal malignancy. Ann Surg. 1997 Oct;226(4):567-77; discussion 577-80.

McCarter MD, Gentilini OD, Gomez ME, Daly JM. Preoperative oral supplement with immunonutrients in cancer patients. JPEN J Parenter Enteral Nutr. 1998 Jul-Aug;22(4):206-11.

Beier-Holgersen R, Boesby S. Influence of postoperative enteral nutrition on postsurgical infections. Gut. 1996 Dec;39(6):833-5.

Beier-Holgersen R, Brandstrup B. Influence of early postoperative enteral nutrition versus placebo on cell-mediated immunity, as measured with the Multitest CMI. Scand J Gastroenterol. 1999 Jan;34(1):98-102.

Meydani SN. Effect of (n-3) polyunsaturated fatty acids on cytokine production and their biologic function. Nutrition. 1996 Jan;12(1 Suppl):S8-14. Review.

Brandstrup B, Tønnesen H, Beier-Holgersen R, Hjortsø E, Ørding H, Lindorff-Larsen K, Rasmussen MS, Lanng C, Wallin L, Iversen LH, Gramkow CS, Okholm M, Blemmer T, Svendsen PE, Rottensten HH, Thage B, Riis J, Jeppesen IS, Teilum D, Christensen AM, Graungaard B, Pott F; Danish Study Group on Perioperative Fluid Therapy. Effects of intravenous fluid restriction on postoperative complications: comparison of two perioperative fluid regimens: a randomized assessor-blinded multicenter trial. Ann Surg. 2003 Nov;238(5):641-8.

Raitt MH, Connor WE, Morris C, Kron J, Halperin B, Chugh SS, McClelland J, Cook J, MacMurdy K, Swenson R, Connor SL, Gerhard G, Kraemer DF, Oseran D, Marchant C, Calhoun D, Shnider R, McAnulty J. Fish oil supplementation and risk of ventricular tachycardia and ventricular fibrillation in patients with implantable defibrillators: a randomized controlled trial. JAMA. 2005 Jun 15;293(23):2884-91.

Wu D, Meydani SN. n-3 polyunsaturated fatty acids and immune function. Proc Nutr Soc. 1998 Nov;57(4):503-9. Review.

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):

Sorensen LS, Thorlacius-Ussing O, Schmidt EB, Rasmussen HH, Lundbye-Christensen S, Calder PC, Lindorff-Larsen K. Randomized clinical trial of perioperative omega-3 fatty acid supplements in elective colorectal cancer surgery. Br J Surg. 2014 Jan;101(2):33-42. doi: 10.1002/bjs.9361. Epub 2013 Nov 26.

Sorensen LS, Rasmussen HH, Aardestrup IV, Thorlacius-Ussing O, Lindorff-Larsen K, Schmidt EB, Calder PC. Rapid incorporation of ω-3 fatty acids into colonic tissue after oral supplementation in patients with colorectal cancer: a randomized, placebo-controlled intervention trial. JPEN J Parenter Enteral Nutr. 2014 Jul;38(5):617-24. doi: 10.1177/0148607113491782. Epub 2013 Jun 20.

• Responsible Party: Lone Schmidt Sørensen, Fresenius Kabi
• ClinicalTrials.gov Identifier: NCT00488904
• Other Study ID Numbers: 123omega; VN2005/35
• First Posted: June 20, 2007
• Last Update Posted: April 12, 2010
• Last Verified: April 2010

Keywords provided by Aalborg University Hospital:

infection; colorectalcancer; omega-3 fedtsyre; complications

Additional relevant MeSH terms:

Postoperative Complications; Pathologic Processes