Controversy exists about whether one-dimensional wave theory can explain the "self-canceling" waves that accompany the diastolic pressure decay and discharge of the arterial reservoir. Although it has been proposed that reservoir and wave effects be treated as separate phenomena, thus avoiding the issue of self-canceling waves, we have argued that reservoir effects are a phenomenological and ma...

In this work, the nonlinear boundary value problem in electrohydrodynamics flow of a fluid in an ion-drag configuration in a circular cylindrical conduit is studied numerically. An effective collocation method, which is based on orthonormal Bernstein polynomials is employed to simulate the solution of this model. Some properties of orthonormal Bernstein polynomials are introduced and utilized t...

Open-vent volcanic activity is typically sustained by ascent and degassing of shallow magma, in which the rate magma supply to upper feeding system largely exceeds eruption. Such unbalance between supplied (input) erupted (output) rates thought result from steady, degassing-driven, convective overturning a conduit/feeding dyke. Here, we characterize circulation at Stromboli volcano combining in...

It has been shown that diffuse luminance flicker increases optic nerve head blood flow. The current study has been performed to quantify changes in retinal blood flow during flicker stimulation. In a group of 11 healthy volunteers, red blood cell velocity and retinal vessel diameters were assessed with bi-directional laser Doppler velocimetry and the Zeiss retinal vessel analyzer before, during...

Follow up cystoscopy clearly showed tan, friable bladder neck mass. After transurethral resection, pathology identified a solitary fibrous tumor with diffuse mitotic features concerning for malignancy. Due to these features and the site of tumor being the trigone and bladder neck, a partial cystectomy was unfeasible. The patient elected to undergo a radical cystoprostatectomy with ileal conduit...

The unsteady three-dimensional numerical simulation calculation of the vertical axial flow pump device is performed based on CFD to examine pressure pulsation and energy distribution features water within siphon outlet conduit (SOC) under hydraulic coupling conduit. signals (PPS) monitoring points are decomposed using Hilbert–Huang approach via empirical mode decomposition (EMD) Hilbert spectru...

This second report in the series on coronary artery bypass presents the authors experience and personal views on the internal thoracic artery (ITA) which date to 1966. There has been a very gradual evolution in the acceptance of this conduit which was initially compared with the saphenous vein and viewed as an improbable alternative to it. As is common with concepts and techniques which are 'ou...

UNLABELLED 99mTc-pertechnetate scintigraphy plays an essential role in the management of a variety of thyroid and parathyroid disorders. The authors report an unusual case of mediastinal tracer distribution of 99mTc-pertechnetate and 99mTc-MIBI in relation to an oesophageal conduit following oesophago-gastrectomy and reconstructive surgery on thyroid scintigraphy. This is a rare but important c...

BACKGROUND Patients with repaired coarctation are at increased risk of hypertension and cardiovascular disease despite successful repair. We studied the function of conduit arteries in upper and lower limbs of patients late after successful coarctation repair and its relation to age at surgery. METHODS AND RESULTS Flow-mediated dilatation (FMD) and the dilatation after sublingual nitroglyceri...

A 47-year-old patient visited our outpatient clinic. She was born with tricuspid atresia with normally connected great arteries without pulmonary stenosis (type Ic); a ventricular septal defect connected the pulmonary artery and hypoplastic right ventricle (RV) with the left ventricle. When she was 14 years old, a Fontan-Bjork procedure was performed.1 The atrial and the ventricular septal defe...