Primary balloon dilatation of coarctation of the aorta was attempted in 10 consecutive neonates (age range 2-23 days). The coarctation site was crossed and the balloon inflated in all but one patient. In two patients with associated severe isthmal hypoplasia there was no change in the gradient after dilatation. In the remainder, the residual gradients were trivial and angiography showed complet...

Background and Purpose Diabetes mellitus impairs reactivity of large peripheral arteries and arterioles to activation of 0-adrenergic receptors. The goal of this study was to determine whether diabetes mellitus alters dilatation of cerebral arterioles to activation of /3-adrenergic receptors. Methods In vivo diameter of pial arterioles was measured in nondiabetic and diabetic (streptozotocin 50...

BACKGROUND Difficulty in cervical dilatation is a hard situation during the procedure of diagnostic dilatation and curettage in some cases. This study was performed to evaluate the effect of vaginal misoprostol for cervical priming before diagnostic dilatation and curettage. METHODS In this study 56 women were selected as the candidates for dilatation and curettage. The study was double blind...

We analyze the situation when the Hamiltonian in field theory can be replaced by the dilatation operator.

Gastric dilatation-volvulus (GDV) is an emergency condition involving abnormal, excessive gas distension and rotation of the stomach. The syndrome of GDV – both the gastric pathology and associated cardiovascular and other organ consequences is a major medical and surgical emergency, involving significant stress to both the patient, requiring the clinician to possess a sound and thorough knowle...

It has been shown by these experiments that after the removal of one superior cervical ganglion of a rabbit, 1/50 of a cubic centimeter of a 1:1,000 adrenalin solution (=0.02 of a milligram of adrenalin) per kilo of body weight injected intravenously, is practically the minimum amount that will produce in nearly all cases a perceptible dilatation of the pupil. In one out of eight animals this d...

The feasibility of using balloon dilatation to relieve stenosis caused by dysplasia of the pulmonary valve was assessed in seven patients (five female, mean age two years) with angiographically confirmed dysplasia who were identified among 38 patients with pulmonary valve stenosis selected for balloon dilatation over a two year period. The clinical features in three patients were consistent wit...

The mammalian myocardium responds to stretch by increasing both contractility and the release of atrial natriuretic peptide. These effects are observed in isolated perfused heart preparations as well as in vivo. That atrial natriuretic peptide release can be stimulated by activation of the phosphatidylinositol turnover pathway suggests a possible mechanism by which stretch might activate a biol...

BACKGROUND Vascular access is "the life line" for patients on chronic hemodialysis. The autogenous arteriovenous fistula provides the best access to the circulation because of low complication rate, long-term use, and lower cost, compared to arteriovenous graft and central venous catheter. The primary objective of this prospective study was to investigate the predictive value of vein diameter a...

BACKGROUND Replacement of the ascending aorta (Asc Ao) at the time of aortic valve replacement (AVR) is controversial because the risk of progressive dilatation following valve replacement is uncertain. Our aim was to determine the natural history of ascending aortic dilatation following AVR. METHODS AND RESULTS We studied 185 patients undergoing AVR at our institution between 1992 and 1999. ...