Flow dynamics in acute ischemic stroke due to embolic occlusion of a fetal posterior cerebral artery treated with endovascular thrombectomy - report of two cases.

The fetal variant of the posterior cerebral artery (fPCA) conserves a major blood flow from the anterior to the posterior cerebral circulation via a strong persistent caudal portion of the embryonic internal carotid artery. We present two cases where endovascular treatment in acute ischemic stroke was complicated by this flow diversion. Though direct thrombectomy of the fPCA using a stent retriever was feasible and successful in both cases outcome remained unfavourable due to a continuous redirection of embolic material into the posterior circulation.

Procedural sedation and analgesia for percutaneous trans-hepatic biliary drainage: Randomized clinical trial for comparison of two different concepts.

Procedural sedation and analgesia (PSA) is important during painful dilatation and stenting in patients undergoing percutaneous trans-hepatic biliary drainage (PTBD). A prospective, nonblinded randomized clinical trial was performed comparing different analgesic regimens with regard to the patient's comfort. Patients were randomly assigned to two treatment groups in a parallel study, receiving either remifentanil or combined midazolam, piritramide, and S-ketamine.

Anterocentral Portal in Ankle Arthroscopy.

Background: The anterocentral portal is not a standard portal in anterior ankle arthroscopy due to its proximity to the anterior neurovascular bundle. However, it provides certain advantages, including a wide field of vision, and portal changes become redundant. The purpose of this study was to evaluate the neurovascular complications after anterior ankle arthroscopy using the anterocentral portal.

Aortic stent graft placement under extracorporeal membrane oxygenation in severe multiple trauma.

Placement of an aortic stent graft under extracorporeal membrane oxygenation was the life-saving procedure in a case of severe head trauma and traumatic aortic dissection after injured by a railroad engine. Timely access to neurosurgery, heart surgery, and radiology providing minimal invasive interventions increase the chances of a favorable outcome.

Continuous intra-arterial nimodipine infusion in refractory symptomatic vasospasm after subarachnoid hemorrhage.

Introduction: Vasospasm still is a major cause of morbidity after aneurysmal subarachnoid hemorrhage. The purpose of this report is to describe the successful management of severe refractory vasospasm with continuous intra-arterial nimodipine (IAN) treatment.

Case Description: A 72-year old right handed woman was admitted with non-traumatic SAH WFNS grade 1.

The influence of gender on patency rates after iliac artery stenting.

Objective: The purpose of this study was to investigate the influence of gender on the long-term outcome after iliac artery stenting and to assess gender-specific differences of the influence of risk factors on treatment success and patency rates.

Methods: Between January 2000 and December 2006, 404 percutaneous transluminal angioplasties with primary stent deployment for symptomatic iliac artery occlusive disease were performed at our center. These included 128 interventions in women and 276 interventions in men.

Transcatheter embolization for the management of acute active inferior epigastric artery hemorrhages.

Purpose: To report a retrospective review of all patients who were admitted to the interventional radiology unit at our hospital for transcatheter arterial embolization (TAE) of an acute active hemorrhage of the inferior epigastric artery.

Methods: From 1996 to 2012, 52 consecutive patients (26 men; mean age 63±15 years) with hemodynamically relevant active abdominal wall hematoma were admitted for TAE of the inferior epigastric artery. Of these, 19 patients had spontaneous hemorrhage due to use of anticoagulants, 18 due to abdominal trauma, and 15 due to an iatrogenic complication.

Resolution of biliary stricture after living donor liver transplantation in a child by percutaneous trans-hepatic cholangiography and drainage: a case report.

Introduction: Intra-hepatic cholestasis arising from biliary strictures is a frequent complication in pediatric patients after liver transplantation. Minimally invasive procedures such as percutaneous drainage placement and balloon dilation are the preferred diagnostic and therapeutic modalities.

Case Presentation: We report the case of a 12-month-old Caucasian boy with biliary atresia who was initially treated with hepatoportoenterostomy.

Long-term outcome after surgical and endovascular management of true and false subclavian artery aneurysms.

Subclavian artery aneurysm is a rare but serious disease due to the risk of thrombosis, embolization, rupture and compression of adjacent structures. Treatment consists of surgical and endovascular techniques. Up to now few long-term follow-up results have been reported.

High dose erythropoietin increases brain tissue oxygen tension in severe vasospasm after subarachnoid hemorrhage.

Background: Vasospasm-related delayed cerebral ischemia (DCI) significantly impacts on outcome after aneurysmal subarachnoid hemorrhage (SAH). Erythropoietin (EPO) may reduce the severity of cerebral vasospasm and improve outcome, however, underlying mechanisms are incompletely understood. In this study, the authors aimed to investigate the effect of EPO on cerebral metabolism and brain tissue oxygen tension (PbtO2).

Endovascular popliteal thrombectomy using the self-expanding, retrievable Solitaire recanalization device.

Purpose: To present an initial peripheral application of the self-expanding, detachable, fully-retrievable Solitaire FR Recanalization Device for endovascular thrombectomy in the lower leg of a patient with acute peripheral limb ischemia.

Case Report: A 79-year-old woman with a long history of peripheral arterial occlusive disease and a femoropopliteal bypass graft presented with sudden grade IIb ischemia of the left lower leg. Conventional antegrade angiography identified total thrombotic occlusion of the tibioperoneal trunk below the distal femoropopliteal bypass anastomosis; the bypass itself was not occluded.

Angiopoietin-1 is associated with cerebral vasospasm and delayed cerebral ischemia in subarachnoid hemorrhage.

Background: Angiopoietin-1 (Ang-1) and -2 (Ang-2) are keyplayers in the regulation of endothelial homeostasis and vascular proliferation. Angiopoietins may play an important role in the pathophysiology of cerebral vasospasm (CVS). Ang-1 and Ang-2 have not been investigated in this regard so far.

Incidence and treatment of local stenosis or occlusion at the vascular access site leading to limb ischemia and new-onset intermittent claudication after percutaneous interventions: implications of vascular closure devices.

Objective: Vascular access site complications (ASCs) are an ongoing hazard of percutaneous interventions (PI). We analyzed incidence, indication, and results of operative repair of access site complications leading to acute limb ischemia (ALI) or new-onset severe claudication (CI) in our institution during an 8-year period.

Methods: Retrospective analysis: demographic parameters, details of coronary or vascular intervention, use of a vascular closure device (VCD), clinical presentation, diagnosis and therapy.

Multimodal neuromonitoring in a patient with aneurysmal subarachnoid hemorrhage associated with aortic coarctation.

Background: Aortic coarctation (AC) rarely remains undiagnosed until adulthood. Intracranial aneurysms and spontaneous subarachnoid hemorrhage (SAH) are more frequent in patients with AC than in the general population.

Methods: The purpose of this report is to describe the management of a poor grade SAH patient with previously undiagnosed AC using advanced monitoring techniques of the brain and the cardiovascular system.

A case of a traumatic trigeminal-cavernous fistula occluded by coil embolization.

Background: A trigeminal artery as the most common persisting embryonic carotid-basilar anastomosis is found in up to .2% of adults. In rare instances, trigeminal-cavernous fistulas develop either spontaneously or after a trauma.

Endovascular repair of isolated iliac artery aneurysms.

Purpose: To retrospectively evaluate a 12-year experience with endovascular repair of isolated iliac artery aneurysm (IAA).

Methods: From August 1997 through July 2009, 91 patients (81 men; mean age 71 years, range 31-90) underwent endovascular treatment for isolated IAA at our department. Of these, 77 patients received stent-grafts either alone or in combination with coils or an Amplatzer vascular plug (n = 2); 1 patient received a Smart stent combined with coils, and 13 patients were treated with coil embolization only.

Endovascular management of inadvertent subclavian artery catheterization during subclavian vein cannulation.

Purpose: To retrospectively review a 9-year experience with endovascular management of inadvertent subclavian artery catheterization during subclavian vein cannulation.

Materials And Methods: From June 2000 through July 2009 (109 months), 13 patients underwent endovascular management of inadvertent subclavian artery catheterization. All catheters were still in situ, including one 7-F catheter, six 8-F catheters, and six large-bore 10-11-F catheters.

Transcatheter arterial embolization for the management of iatrogenic and blunt traumatic intercostal artery injuries.

Objective: The purpose of this retrospective study was to evaluate transcatheter arterial embolization (TAE) for the management of iatrogenic and blunt traumatic intercostal artery (ICA) injuries associated with hemothorax and clinical deterioration.

Methods: From May 1999 through April 2007, 24 consecutive patients (17 men, 7 women; mean age 53 years) presenting with active ICA hemorrhage underwent TAE mainly by means of coils combined with polyvinyl alcohol (PVA) particles. Eleven of them had blunt traumatic injuries (group A, n = 11) and 13 had iatrogenic injuries (group B, n = 13).

Traumatic fistula between the middle meningeal artery and the sphenoparietal sinus.

Purpose: Post-traumatic fistulas between the middle meningeal artery and the cranial venous system are extremely rare. We describe clinical presentation and successful endovascular management of a case of post-traumatic fistula between the middle meningeal artery and the sphenoparietal sinus.

Methods: A 53-year-old man was admitted with multiple brain contusions and a temporoparietal fracture after a head trauma.

Evaluation of volumetric measurements in patients with acute type B aortic dissection--thoracic endovascular aortic repair (TEVAR) vs conservative.

Objective: The aim of this retrospective study was to evaluate aortic volume changes in patients with acute type B aortic dissection (TBD), treated either by thoracic endovascular aortic repair (TEVAR) or conservatively.

Materials And Methods: From July 1996 through March 2008, 76 patients presenting with acute TBD were referred to our department. To ensure a follow-up of at least 24 months, only 64 of them were included in the present study, with the cut-off for inclusion being March 2006.

Intra-arterial haemodynamic changes during cerebral three-dimensional rotational angiography.

Three-dimensional rotational angiography (3DRA) is useful for detecting, classifying and planning treatment for intracranial aneurysms. Prolonged contrast material (CM) injection, required for 3DRA, might cause blood pressure changes in the selectively catheterized artery. The purpose of this study was to assess the extent and clinical relevance of haemodynamic changes in the selected artery during 3DRA.

Acute pulmonary artery embolism during transcatheter embolization: successful resuscitation with veno-arterial extracorporeal membrane oxygenation.

Versatile particles from transcatheter embolization may accidentally enter the pulmonary circulation, causing severe pulmonary embolism. A 36-yr-old woman patient suffering from an arteriovenous malformation in the left shoulder underwent embolization with micro coils, N-butyl-2-cyanoacrylate/lipiodol and polyvinyl alcohol particles. During embolization, acute onset of tachycardia, hypotension, and decline in oxygen saturation indicated right ventricular failure and decreased pulmonary perfusion confirmed by angiography.

Endovascular repair of acute type B aortic dissection: midterm results.

Purpose: To evaluate midterm results of endovascular stent-graft placement for acute Stanford type B dissection (TBD).

Methods: A retrospective review was conducted of 35 consecutive patients who were treated with stent-graft implantation for acute TBD between July 1996 and July 2007. Computed tomographic (CT) volumetric analysis of the true lumen (TL) and false lumen (FL) changes in 23 patients was performed, as well as evaluation of the influence of re-entry points and length of stent-graft coverage on volume changes.

Endovascular therapy of distal anterior cerebral artery aneurysms-an effective treatment option.

Background: Surgical treatment of APAs is associated with relatively high morbidity and mortality. The aim of this study was to illustrate the technical achievements of endovascular procedures in the distal anterior cerebral artery area, technical difficulties and how they can be overcome, and the outcome of endovascular treatment of APAs.

Methods: Between 1997 and 2006, of 49 patients with APAs at our institution, 29 were treated endovascularly (4.

Serious complications following endovascular thoracic aortic stent-graft repair for type B dissection.

Objective: To describe our experience with endovascular stent-graft repairs in type B aortic dissection focusing on serious secondary complications resulting in immediate or late conversion to open repair.

Methods: From November 1997 to May 2007, 28 patients underwent a thoracic endovascular stent-graft procedure for acute symptomatic type B dissection at our institution. Indication for endovascular repair at our department is a complicated course of type B dissection, including thoracic aortic rupture, suspicion of impending rupture, visceral and/or peripheral ischemia, uncontrollable hypertension, and severe therapy-resistant pain.