BACKGROUND AND PURPOSE Stents are known to have hemodynamic and biologic effects in addition to their mechanical scaffold effect. To determine whether stents affect long-term outcomes after coiling of unruptured aneurysms, we compared angiographic outcomes at 2 years postembolization for stent- and nonstent-assisted coiled unruptured aneurysms. MATERIALS AND METHODS Stent-assisted coiling was...

BACKGROUND AND PURPOSE We sought to investigate factors determining growth rate of unruptured intracranial aneurysms as well as formation of new (de novo) aneurysms in patients from a time period when unruptured aneurysms were not treated surgically. METHODS Eighty-seven patients (79 had ruptured aneurysms clipped at start of follow-up) with 111 unruptured aneurysms as well as an additional 7...

BACKGROUND AND PURPOSE We have previously reported the difference in length of stay and hospital charges for patients with cerebral aneurysms treated with either clipping or coiling at our institution. We now report an analysis of the same comparison at a national level conducted using the Nationwide Inpatient Sample database. METHODS We obtained the Nationwide Inpatient Sample from the Healt...

Background and Purpose—We have previously reported the difference in length of stay and hospital charges for patients with cerebral aneurysms treated with either clipping or coiling at our institution. We now report an analysis of the same comparison at a national level conducted using the Nationwide Inpatient Sample database. Methods—We obtained the Nationwide Inpatient Sample from the Healthc...

OBJECTIVE To determine, for abdominal aortic aneurysm surgery, whether a previously reported relationship between hospital case volume and mortality rate was observed in Ontario hospitals and to assess the potential impact of age on the mortality rate for elective surgery. DESIGN Population based observational study using administrative data. SETTING All Ontario hospitals where repair of ab...

370 residents of Rochester, Minnesota, with clinicallyrecognized unruptured abdominal aortic aneurysm (AAA), were identified through record review. The rolling entry period was 1951-1984. Of these 181 had at least one documenting ultrasound. Five persons had rupture of the aneurysm within 48 hours of the ultrasound exam, and were excluded from the study. The study group consisted of the remaini...

The optimal treatment and appropriate follow-up period for an unruptured vertebral artery (VA) and/or posterior inferior cerebellar artery (PICA) dissection have not been established. Decisions regarding treatment of these vascular lesions are usually based on the manifesting symptoms and changes in radiologic findings during the follow-up period. We experienced a patient who had a simultaneous...

MATERIALS AND METHODS: Hospitalizations for clipping or coiling of unruptured cerebral aneurysms from 2001 to 2008 were identified by cross-matching ICD codes for the diagnosis of unruptured aneurysm (437.3) with procedural codes for clipping (39.51) or coiling (39.52, 39.79, or 39.72) of cerebral aneurysms and excluding all patients with a diagnosis of subarachnoid hemorrhage (430) and intrace...