Between June 1978 and January 1982, 115 patients underwent 122 subclavian artery-pulmonary artery shunts using polytetrafluoroethylene (PTFE Impra) grafts. Forty-six of the patients had a ductus dependent pulmonary circulation, the patency of which was maintained by an infusion of prostaglandin E2 in 29 cases. There were nine hospital deaths, four of which were related to shunt failure. Five pa...

BACKGROUND Peripheral arterial disease is a source of morbidity and mortality. Surgical vascular reconstruction is a treatment option but probability of failure and complications are important concerns. In this study, we evaluated outcome of surgical infrainguinal reconstruction and factors affecting graft patency for a period of one year. METHODS In this cohort study, 85 consecutive patients...

Purpose: To determine the effect of intraluminal brachytherapy on stent patency and survival after metallic stent placement in patients with primary bile duct carcinoma. Materials and Methods: Twenty-seven patients with primary bile duct carcinoma underwent metallic stent placement; in 16 of the 27 intraluminal brachytherapy with an iridium-192 source (dose, 25 Gy) was the performed. Obstructio...

HYPOTHESIS Thrombolysis is an accepted technique to salvage a failed infrainguinal bypass graft. Careful case selection, including consideration of the native arterial runoff and the type and location of the graft, will portend a better clinical outcome and prolonged graft patency. DESIGN Retrospective study of an inception cohort of 91 acutely thrombosed grafts. SETTING Academic tertiary c...

Objective To examine patency of the cerebral anterior and posterior communicating arteries in patients with ischaemic stroke with or without diabetes mellitus. Methods This retrospective study included patients with acute ischaemic stroke treated between July 2011 and May 2016. Cerebral infarction was evaluated by magnetic resonance imaging. Anterior and posterior communicating-artery patency w...

BACKGROUND To investigate the efficacy, safety, and patency following treatment of wall-adherent thrombus in hemodialysis vascular access with a wall-contact device, the Arrow-Trerotola percutaneous thrombolytic device (PTD). METHODS We retrospectively reviewed an existing database of procedures fulfilling the following criteria: thrombosed hemodialysis access, wall-adherent thrombus, and use...

BACKGROUND Our objective is to provide provision of primary and secondary patency rates data and incidence of complications. Despite the publication of some review articles and small prospective trials about vascular accesses, controversy still exists regarding the choice of the outflow conduit and especially the choice of the fistula to be formed in secondary and tertiary access procedures. ...

Saphenous vein was the conduit used in the first series of coronary surgery, and, with the exception of revascularization of the left anterior descending coronary artery, it remains the most commonly used conduit.1 There are several reasons for this. First, because of its relatively large diameter and wall characteristics, it is technically easy to use; second, it is plentiful, and therefore ca...

Accumulation of soft tissue or dentinal remnants in the apical region is a common event that can cause blockage of root canals. This event can be avoided if apical patency is performed during the root canal shaping procedures. However, there is no consensus on the role of apical patency in relation to the success of endodontic treatment of necrotic teeth with apical periodontitis. Therefore, th...

Intr Maintaining the patency of arterial lines is essential for obtaining accurate physiological measurements, enabling blood sampling and minimising the time, expense and patient discomfort incurred by line replacement. HS is commonly used to maintain and prolong arterial line patency. In 2008, a National Patient Safety Agency alert advised organisations to minimise its use for this purpose fo...