Search results for "Enos"

From Clinical Imaging to Patient-Specific Computational Model: Rapid Adaptation of the Living Heart Human Model to a Case of Aortic Stenosis

2021

Aortic stenosis (AS) is the most common acquired heart valve disease in the developed world. Traditional methods of grading AS have relied on the measurement of aortic valve area and transvalvular pressure gradient. Recent research has highlighted the existence of AS variants that do not meet classic criteria for severe AS such as low-flow, low-gradient AS. With the development of sophisticated multi-scale computational models, investigation into the left ventricular (LV) biomechanics of AS offers new insights into the pathophysiology that may guide treatment decisions surrounding AS. Building upon our prior study entailing LV-aortic coupling where AS conditions were applied to the idealize…

Pathologist’s Findings after PTCA (The Mechanism of Angioplasty)

1991

Knowledge of the pathological changes induced by percutaneous transluminal coronary angioplasty (PTCA) is necessary to understand its complications.

A rare case of infrarenal aortic coarctation in a young female

2020

Abstract Introduction Infrarenal abdominal aortic coarctation (AAC) is an extremely rare disease. It can be associated with renal artery stenosis determining secondary renal hypertension. Presentation of case We report a case of AAC in young female patient presenting systemic hypertension non-responder to medical treatment. Diagnostics revealed the involvement of the right renal artery as the cause of hypertension. The management consisted of percutaneous renal artery stenting and close surveillance for the aortic segment. The treatment was uneventful with resolution of the hypertensive condition. Discussion AAC etiology is unknown. There are no studies comparing the long-term treatment out…

Resistance of the internal mammary artery to restenosis: a histomorphologic study of various porcine arteries.

2007

<i>Background/Aims:</i> Restenosis after percutaneous transluminal angioplasty (PTA) of the internal mammary artery (IMA) grafts is much less pronounced than in other arteries and venous grafts. The aim of the study was to test whether various arteries respond differently to dilatation. <i>Methods:</i> PTA of the IMA, carotid, renal and circumflex coronary (RCx) arteries was performed in 9 pigs (balloon to artery ratio of 1:1.5). After 8 weeks, angiography was repeated and vessels prepared for histological analysis. Immunohistochemical staining was done to examine proliferative activity (Ki67) and to identify the vasa vasorum of the adventitia (F VIII-RA). <i>R…

Das Verhalten der Kollateralen bei der perkutanen transluminalen Angioplastie

1990

The fate of 106 collaterals was investigated following percutaneous transluminal dilatation of 113 stenoses and occlusions. Following dilatation, 78% of collaterals were unchanged and 22% could no longer be demonstrated. The success of the dilatation had no bearing on the fate of the collaterals. Collaterals beginning or ending in a dilated portion of vessel disappeared more frequently (30%) than the others (11%). Following five dilatations, some vessels were demonstrated in the area of stenosis, which had not been demonstrated previously. Evidently local events, such as displacement of arteriosclerotic plaques may lead to occlusion or reopening of vessels. Remaining collaterals may be of g…

Fully Percutaneous Transaxillary Aortic Valve Replacement With Effective Bailout Plan for Vascular Complications.

2020

Percutaneous puncture of an aorto‐bifemoral bypass graft and successful closure with MANTA ® device in transfemoral TAVR

2021

Transfemoral aortic valve replacement (TAVR) has become a standard therapeutic option for patients with symptomatic severe aortic stenosis. Special anatomies can pose distinct challenges for vascular access and later closure of the access site, for example, in preoperated patients. Here, we elucidate a case of transfemoral TAVR with vascular access by direct puncture of an aorto-bifemoral bypass graft and illustrate the feasibility of vascular closure by an anchored collagen-plug vascular closure device (Teleflex MANTA® ).

Angioplastie der Arteria subclavia: Technik, Früh- und Spätergebnisse

2008

Percutaneous transluminal angioplasty (PTA) was performed in 22 patients (13 women and nine men; mean age 57 years [44-74] ) with symptomatic obstruction of the subclavian artery which was due to arteriosclerotic stenosis in 14, occlusion in six patients, radiogenic multiple stenoses in one (after radiotherapy for breast cancer), and stenoses of the left and right subclavian artery in one patient with Takayasu's arteritis. Primary success occurred in 21 (91%). The only complication was a stenosis of the brachial artery after combined brachiofemoral recanalization of a subclavian artery occlusion, but it did not require treatment. No emboli were noted. A good long-term result was achieved in…

Die direkte perkutane radiologische Jejunostomie (PRJ) und Duodenostomie: eine retrospektive Auswertung

2005

Purpose: To present our experience with direct percutaneous radiologic duodenostomy and jejunostomy (PRJ) for alimentation. Materials and Methods: A retrospective study identified 24 patients who had undergone percutaneous jejunostomy or duodenostomy guided by CT and fluoroscopy over a period of 9 years. Whenever possible, the jejunum was inflated with a 5 French diagnostic catheter and jejunopexy was performed using Cope anchors (T-fasteners). A 12 to 14 French locking pigtail drain was inserted for alimentation. In 8 patients, percutaneous direct jejunostomy was performed using only fluoroscopy. In 9 patients, both CT and fluoroscopy were used to guide the jejunostomy. In all 7 patients w…

Percutaneous Femoropopliteal Bypass: 2-Year Results of the DETOUR System

2021

Purpose: This study investigated the 2-year safety and effectiveness of the PQ Bypass DETOUR system as a percutaneous femoropopliteal bypass. Materials and Methods: Seventy-eight patients with 82 long-segment femoropopliteal lesions were enrolled in this prospective, single-arm, multicenter study. The DETOUR system deployed Torus stent grafts directed through a transvenous route. Eligible patients included those with lesions of >10 cm and average of 371±55 mm. Key safety endpoints included major adverse events (MAEs) and symptomatic deep venous thrombosis in the target limb. Effectiveness endpoints included primary patency defined as freedom from ≥50% stenosis, occlusion, or clinically-d…