The delayed upstroke of the arterial pulse in valvular aortic stenosis has been attributed, in part, to prolonged left ventricular emptying. Left ventricular emptying rate, however, has not been measured in aortic stenosis. We assessed the rate of left ventricular emptying by computer analysis of biplane cineangiograms in seven normal subjects, six patients with mild to moderate aortic stenosis...

Corrected systolic time intervals of the left ventricle: the interval between the onset of the Q wave and the first heart sound (Q-MI), isovolumic contraction time (IVCT), and left ventricular ejection time (LVET) have been measured by noninvasive techniques in 26 patients with valvular aortic stenosis and in 25 patients with idiopathic hypertrophic subaortic stenosis. The results were compared...

Objective: This study aimed to determine whether preoperative frailty assessed using the five-item modified index (mFI-5) in patients undergoing posterior lumbar interbody fusion for spinal stenosis can predict poor patient outcomes.Methods: We retrospectively included 192 aged 18 years or older who were diagnosed with and underwent at a single hospital between March 2009 February 2021. calcula...

Recently, much emphasis has given to study the control and maintenance of production inventories of the deteriorating items. Rework is one of the main issues in reverse logistic and green supply chain, since it can reduce production cost and the environmental problem. Many researchers have focused on developing rework model, but few of them have developed model for deteriorating items. Due to t...

A study of the steady flow of blood through a horizontally symmetric artery with mild stenosis is presented by considering blood as a micropolar fluid. The viscosity of blood is considered as radial coordinate dependent. The non-linear pressure equations governing the flow are solved numerically using finite difference technique. The effects of micropolar fluid parameters and hematocrit on axia...

INTRODUCTION Central (superior vena cava, brachiocephalic, or subclavian) venous stenoses are a major impediment to long-term arteriovenous access in the upper extremities. The optimal management of these stenoses is still undecided. The purpose of this study was to determine the outcomes of primary angioplasty (PTA) vs primary stenting (PTS) in a dialysis access population at a tertiary referr...

Of 88 consecutive patients aged 20 to 77 years with severe symptomatic aortic valve disease requiring surgery, 51 patients had angina pectoris; of these 51, 41 had predominant aortic stenosis and 10 had severe aortic regurgitation. All patients with angina pectoris underwent coronary angiography; significant coronary arterial disease was encounted in 24 per cent of those with aortic stenosis an...

Background: Previous studies show that serum level of uric acid is significantly correlated with mortality and functional outcome in patients with ischemic stroke and according to some other studies, ischemic stroke is associated with stenosis of some stenoisis of somespecific brain vessels. The aim of this study was to investigate the frequency of hyperuricemia and its associa...