Debes C, Aissou M, Beaussier M [Prehabilitation. Preparing patients for surgery to improve functional recovery and reduce postoperative morbidity]. Ann Fr Anesth Reanim. 2014 Jan;33(1):33-40. doi: 10.1016/j.annfar.2013.12.012. Epub 2014 Jan 17. Review. French.
Spanjersberg WR, Reurings J, Keus F, van Laarhoven CJ Fast track surgery versus conventional recovery strategies for colorectal surgery. Cochrane Database Syst Rev. 2011 Feb 16;(2):CD007635. doi: 10.1002/14651858.CD007635.pub2. Review.
West MA, Lythgoe D, Barben CP, Noble L, Kemp GJ, Jack S, Grocott MP Cardiopulmonary exercise variables are associated with postoperative morbidity after major colonic surgery: a prospective blinded observational study. Br J Anaesth. 2014 Apr;112(4):665-71. doi: 10.1093/bja/aet408. Epub 2013 Dec 8.
Wilson RJ, Davies S, Yates D, Redman J, Stone M Impaired functional capacity is associated with all-cause mortality after major elective intra-abdominal surgery. Br J Anaesth. 2010 Sep;105(3):297-303. doi: 10.1093/bja/aeq128. Epub 2010 Jun 23.
Prehabilitation Before Surgery in Colorectal Cancer With Improved Fast Track Rehabilitation : Part 1
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.
