Anderson JL, Berce M, Hartley DE Endoluminal aortic grafting with renal and superior mesenteric artery incorporation by graft fenestration. J Endovasc Ther. 2001 Feb;8(1):3-15. doi: 10.1177/152660280100800102.
Gasper WJ, Reilly LM, Rapp JH, Grenon SM, Hiramoto JS, Sobel JD, Chuter TA Assessing the anatomic applicability of the multibranched endovascular repair of thoracoabdominal aortic aneurysm technique. J Vasc Surg. 2013 Jun;57(6):1553-8; discussion 1558. doi: 10.1016/j.jvs.2012.12.021. Epub 2013 Feb 6.
Iwase T, Inoue K, Sato M, Yoshida Y, Ueno K, Tanaka H, Tamaki S Transluminal repair of an infrarenal aortoiliac aneurysm by a combination of bifurcated and branched stent grafts. Catheter Cardiovasc Interv. 1999 Aug;47(4):491-4. doi: 10.1002/(SICI)1522-726X(199908)47:43.0.CO;2-I.
Kinney EV, Kaebnick HW, Mitchell RA, Jung MT Repair of mycotic paravisceral aneurysm with a fenestrated stent-graft. J Endovasc Ther. 2000 Jun;7(3):192-7. doi: 10.1177/152660280000700304.
May J, White GH, Yu W, Ly CN, Waugh R, Stephen MS, Arulchelvam M, Harris JP Concurrent comparison of endoluminal versus open repair in the treatment of abdominal aortic aneurysms: analysis of 303 patients by life table method. J Vasc Surg. 1998 Feb;27(2):213-20; discussion 220-1. doi: 10.1016/s0741-5214(98)70352-0.
Mitchell RS, Miller DC, Dake MD, Semba CP, Moore KA, Sakai T Thoracic aortic aneurysm repair with an endovascular stent graft: the "first generation". Ann Thorac Surg. 1999 Jun;67(6):1971-4; discussion 1979-80. doi: 10.1016/s0003-4975(99)00436-1.
Thompson JP, Boyle JR, Thompson MM, Strupish J, Bell PR, Smith G Cardiovascular and catecholamine responses during endovascular and conventional abdominal aortic aneurysm repair. Eur J Vasc Endovasc Surg. 1999 Apr;17(4):326-33. doi: 10.1053/ejvs.1998.0760.
Walker SR, Yusuf SW, Wenham PW, Hopkinson BR Renal complications following endovascular repair of abdominal aortic aneurysms. J Endovasc Surg. 1998 Nov;5(4):318-22. doi: 10.1583/1074-6218(1998)0052.0.CO;2.
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.