Poor patency of arteriovenous ePTFE grafts remains a major clinical problem. Prophylactic balloon angioplasty of stenoses has been claimed to prolong graft patency and has been widely introduced into practice. In this manuscript we report the cost incurred in application of such a program involving graft surveillance and prophylactic angioplasty of ePTFE graft stenoses >50% diameter. All patien...

New technologies have produced a revolution in primary varicose vein treatments. Duplex ultrasound is now used for preoperative diagnosis, postoperative surveillance, and during many procedures. Ultrasound has also altered our understanding of the pathophysiology of chronic venous disease. Laser and radiofrequency saphenous ablations are common. Classic techniques, such as sclerotherapy, high l...

Background: Foam injection sclerotherapy for treating varicose veins is a newly emerging and minimally invasive technique. Its safety profile needs to be investigated. Objective: We documented the adverse effects associated with foam occurring in first 24 hours then at 2 4 weeks of follow up visits. Material Methods: This cross-sectional study was conducted Department Surgery Benazir Bhutto Hos...

BACKGROUND Carotid ultrasound appears to be useful in the assessment of cardiovascular risk. In this study, we have assessed the carotid intima-media thickness (CIMT) in a group of individuals without a history of cardiovascular events. METHODS A sample of 431subjects (189 [43.9%] males and 242 [56.1%] females) was obtained from an urban population using a stratified-cluster method in Mashhad...

OBJECTIVE Color and duplex Doppler ultrasound and digital subtraction angiography were compared for the evaluation of graft patency of the gastroepiploic artery (GEA). METHODS In 77 observations, ultrasound and digital subtraction angiography were compared. The coronary resistance index (cRI) was defined as the maximal systolic flow velocity minus the maximal diastolic flow velocity, divided ...

Patients and methods From January 1 2006 to March 31th 2014, patients who were diagnosed as deep vein thrombosis, either by conventional duplex studies or bedside ultrasound, were included. Medical records were reviewed by a 6-year-trained emergency clinician. Age less than 18, patient who was referred from outpatient department or from other hospital, patient who had the diagnosis of deep vein...

arotid endarterectomy (CEA) reduces the risk for stroke in selected patients with symptomatic and asymptomatic carotid atherosclerosis. Because of its observed benefit and the prevalence of carotid bifurcation atherosclerosis, CEA is the most commonly performed vascular reconstructive procedure. In general, the benefit of CEA is related to the degree of stenosis, although in two national trials...

In this paper we study the B-mode/Doppler duplex imaging problem. We begin by looking at the problem of determining the true velocity vector only. We develop a model for the power spectrum of a signal reeected by a line of point scatterers with a Poisson distribution. We show that with circularly symmetric apertures it is possible to use the expression of that power spectrum to determine the tr...

We report a case of a 58-year-old male patient who underwent successful endovenous radiofrequency ablation of the left great saphenous vein for CEAP class 4a venous disease. On the third postoperative day, he had a duplex ultrasound scan for evaluation which showed successful occlusion of the great saphenous vein (GSV) with class 2 endovenous heat-induced thrombus (EHIT) that disappeared during...