Bundgaard-Nielsen M, Secher NH, Kehlet H 'Liberal' vs. 'restrictive' perioperative fluid therapy--a critical assessment of the evidence. Acta Anaesthesiol Scand. 2009 Aug;53(7):843-51. doi: 10.1111/j.1399-6576.2009.02029.x. Epub 2009 Jun 10. Review.
Camus Y, Delva E, Cohen S, Lienhart A The effects of warming intravenous fluids on intraoperative hypothermia and postoperative shivering during prolonged abdominal surgery. Acta Anaesthesiol Scand. 1996 Aug;40(7):779-82.
Cheatham ML, Chapman WC, Key SP, Sawyers JL A meta-analysis of selective versus routine nasogastric decompression after elective laparotomy. Ann Surg. 1995 May;221(5):469-76; discussion 476-8.
Eskicioglu C, Forbes SS, Aarts MA, Okrainec A, McLeod RS Enhanced recovery after surgery (ERAS) programs for patients having colorectal surgery: a meta-analysis of randomized trials. J Gastrointest Surg. 2009 Dec;13(12):2321-9. doi: 10.1007/s11605-009-0927-2. Epub 2009 May 21.
Fujita S, Saito N, Yamada T, Takii Y, Kondo K, Ohue M, Ikeda E, Moriya Y Randomized, multicenter trial of antibiotic prophylaxis in elective colorectal surgery: single dose vs 3 doses of a second-generation cephalosporin without metronidazole and oral antibiotics. Arch Surg. 2007 Jul;142(7):657-61.
Galvão CM, Marck PB, Sawada NO, Clark AM A systematic review of the effectiveness of cutaneous warming systems to prevent hypothermia. J Clin Nurs. 2009 Mar;18(5):627-36. doi: 10.1111/j.1365-2702.2008.02668.x. Review.
Gustafsson UO, Thorell A, Soop M, Ljungqvist O, Nygren J Haemoglobin A1c as a predictor of postoperative hyperglycaemia and complications after major colorectal surgery. Br J Surg. 2009 Nov;96(11):1358-64. doi: 10.1002/bjs.6724.
Habib AS, El-Moalem HE, Gan TJ The efficacy of the 5-HT3 receptor antagonists combined with droperidol for PONV prophylaxis is similar to their combination with dexamethasone. A meta-analysis of randomized controlled trials. Can J Anaesth. 2004 Apr;51(4):311-9.
Houborg KB, Jensen MB, Hessov I, Laurberg S Little effect of physical training on body composition and nutritional intake following colorectal surgery--a randomised placebo-controlled trial. Eur J Clin Nutr. 2005 Aug;59(8):969-77.
Karanicolas PJ, Smith SE, Kanbur B, Davies E, Guyatt GH The impact of prophylactic dexamethasone on nausea and vomiting after laparoscopic cholecystectomy: a systematic review and meta-analysis. Ann Surg. 2008 Nov;248(5):751-62. doi: 10.1097/SLA.0b013e3181856024. Review.
Kehlet H, Wilmore DW Evidence-based surgical care and the evolution of fast-track surgery. Ann Surg. 2008 Aug;248(2):189-98. doi: 10.1097/SLA.0b013e31817f2c1a. Review.
Kehlet H Multimodal approach to control postoperative pathophysiology and rehabilitation. Br J Anaesth. 1997 May;78(5):606-17. Review.
Lewis SJ, Egger M, Sylvester PA, Thomas S Early enteral feeding versus "nil by mouth" after gastrointestinal surgery: systematic review and meta-analysis of controlled trials. BMJ. 2001 Oct 6;323(7316):773-6.
Ljungqvist O, Scott M, Fearon KC Enhanced Recovery After Surgery: A Review. JAMA Surg. 2017 Mar 1;152(3):292-298. doi: 10.1001/jamasurg.2016.4952. Review.
Nelson R, Tse B, Edwards S Systematic review of prophylactic nasogastric decompression after abdominal operations. Br J Surg. 2005 Jun;92(6):673-80. Review.
Nygren J, Soop M, Thorell A, Hausel J, Ljungqvist O; ERAS Group An enhanced-recovery protocol improves outcome after colorectal resection already during the first year: a single-center experience in 168 consecutive patients. Dis Colon Rectum. 2009 May;52(5):978-85. doi: 10.1007/DCR.0b013e31819f1416.
Nygren J, Thorell A, Ljungqvist O Preoperative oral carbohydrate nutrition: an update. Curr Opin Clin Nutr Metab Care. 2001 Jul;4(4):255-9. Review.
Platell C, Hall J What is the role of mechanical bowel preparation in patients undergoing colorectal surgery? Dis Colon Rectum. 1998 Jul;41(7):875-82; discussion 882-3.
Punjasawadwong Y, Boonjeungmonkol N, Phongchiewboon A Bispectral index for improving anaesthetic delivery and postoperative recovery. Cochrane Database Syst Rev. 2007 Oct 17;(4):CD003843. Review. Update in: Cochrane Database Syst Rev. 2014;6:CD003843.
Rao W, Zhang X, Zhang J, Yan R, Hu Z, Wang Q The role of nasogastric tube in decompression after elective colon and rectum surgery: a meta-analysis. Int J Colorectal Dis. 2011 Apr;26(4):423-9. doi: 10.1007/s00384-010-1093-4. Epub 2010 Nov 24. Review.
Rasmussen MS, Jørgensen LN, Wille-Jørgensen P Prolonged thromboprophylaxis with low molecular weight heparin for abdominal or pelvic surgery. Cochrane Database Syst Rev. 2009 Jan 21;(1):CD004318. doi: 10.1002/14651858.CD004318.pub2. Review.
Slim K, Vicaut E, Panis Y, Chipponi J Meta-analysis of randomized clinical trials of colorectal surgery with or without mechanical bowel preparation. Br J Surg. 2004 Sep;91(9):1125-30.
Song F, Glenny AM Antimicrobial prophylaxis in colorectal surgery: a systematic review of randomized controlled trials. Br J Surg. 1998 Sep;85(9):1232-41. Review. Erratum in: Br J Surg 1999 Feb;86(2):280.
Walker KJ, Smith AF Premedication for anxiety in adult day surgery. Cochrane Database Syst Rev. 2009 Oct 7;(4):CD002192. doi: 10.1002/14651858.CD002192.pub2. Review.
Wille-Jørgensen P, Guenaga KF, Castro AA, Matos D Clinical value of preoperative mechanical bowel cleansing in elective colorectal surgery: a systematic review. Dis Colon Rectum. 2003 Aug;46(8):1013-20. Review.
Zafar N, Davies R, Greenslade GL, Dixon AR The evolution of analgesia in an 'accelerated' recovery programme for resectional laparoscopic colorectal surgery with anastomosis. Colorectal Dis. 2010 Feb;12(2):119-24. doi: 10.1111/j.1463-1318.2009.01768.x. Epub 2009 Jan 16.
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.