BACKGROUND AND PURPOSE The limits of cerebral blood flow-pressure autoregulation have not been adequately defined for pediatric patients. Mean arterial blood pressure below these limits might contribute to brain injury during cardiac surgery. The purpose of this pilot study was to assess a novel method of determining the lower limits of pressure autoregulation in pediatric patients supported wi...

PURPOSE Use of a composite graft combining a polytetrafluoroethylene graft with an autogenous vein is an option for limb salvage in the absence of an adequate single segment vein graft. We aimed to investigate the results of infrainguinal bypass with a composite graft. MATERIALS AND METHODS We retrospectively reviewed 11 infrainguinal arterial bypasses on 11 limbs which underwent surgery from...

An extracranial-intracranial bypass graft was established in 16 dogs. The graft was routed deep in the lateral pharyngeal space as opposed to the subcutaneous course in front of the ear, which may be hazardous. Of 10 common carotid-middle cerebral arterial bypass grafts three were still patent four and a half, six, and 11 months postoperatively. The remaining seven arterial and six venous bypas...

Arterial revascularization in patients with peripheral arterial disease (PAD) reestablishes large arterial blood supply to the ischemic muscles in lower extremities via bypass grafts or percutaneous transluminal angioplasty (PTA). Currently no gold standard is available for assessment of revascularization effects in lower extremity muscles. This study tests a novel near-infrared diffuse correla...

AIMS The aim of this study was to evaluate the diagnostic accuracy in the assessment of coronary artery bypass grafts using 64-slice computed tomography (CT) technology. METHODS AND RESULTS CT coronary angiography was performed for 96 bypasses in 31 patients with suspected coronary artery disease using a Siemens Sensation 64-slice CT-scanner and compared with invasive coronary angiography (IC...

BACKGROUND Maintaining flow in a newly established high-flow bypass into the intracranial circulation may be threatened by low blood pressure. OBJECTIVE To identify mean arterial blood pressure below which early graft failure may ensue. METHODS Computational fluid dynamic blood flow simulation and Doppler ultrasound-derived velocities were combined to study 12 patients with common carotid-t...

A multicenter, international PQ Bypass DETOUR study was performed between 2015 and 2017. Seventy-eight patients with 82 femoropopliteal (FP) arterial lesions were treated Torus stent grafts (PQ Bypass, Milpitas, Calif) through a transvenous route (chronic total occlusion, 96%; average occlusion length, 16 cm; lesion 37 cm). The technical success rate 96%. After 2 years of follow-up, major amput...

Renin-angiotensin system activation is suspected of being involved in postcoronary surgery hypertension, but appears to be useful in maintaining blood pressure during anesthesia and cardiopulmonary bypass. To clarify these points, 19 patients were compared: ten as a control group and nine who received captopril during two days before surgery. Anesthesia was the same for the two groups, and card...

background  : on-pump coronary artery bypass graft (cabg) surgery impairs gas exchange in the early postoperative period. the main object on this study was evaluation of changes in arterial blood gas values in patients underwent on pump cabg surgery receiving different dose of intravenous nitroglycerin (ntg). methods : sixty-seven consecutive patients undergoing elective on-pump cabg randomly e...