Analgesia — Peri-Operative Management of Patients Undergoing Laparoscopic Colorectal Surgery
Citation(s)
Kong SK, Onsiong SM, Chiu WK, Li MK Use of intrathecal morphine for postoperative pain relief after elective laparoscopic colorectal surgery. Anaesthesia. 2002 Dec;57(12):1168-73.
Senagore AJ, Delaney CP, Mekhail N, Dugan A, Fazio VW Randomized clinical trial comparing epidural anaesthesia and patient-controlled analgesia after laparoscopic segmental colectomy. Br J Surg. 2003 Oct;90(10):1195-9.
Taqi A, Hong X, Mistraletti G, Stein B, Charlebois P, Carli F Thoracic epidural analgesia facilitates the restoration of bowel function and dietary intake in patients undergoing laparoscopic colon resection using a traditional, nonaccelerated, perioperative care program. Surg Endosc. 2007 Feb;21(2):247-52. Epub 2006 Dec 9.
Randomised Controlled Trial Comparing the Effects of Epidural, Spinal and PCA in Patients Undergoing Laparoscopic Colectomy.
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.
