نتایج جستجو برای: arterial obstruction
تعداد نتایج: 183608 فیلتر نتایج به سال:
lipidaemic agents (usually a statin). If coronary arterial spasm seems a likely aetiological agent in such a patient, I also prescribe a vasodilator, i.e. a calcium channel blocker, an ACE inhibitor, or an angiotensin receptor blocker. These patients represent a very interesting subset of individuals with myocardial infarction. I am convinced that they will continue to be the subject of clinica...
Cystic adventitial disease is rare, but it is one of the well-recognized causes of non-atherosclerotic arterial stenosis or obstruction. Despite one of its most common symptoms being chronic intermittent claudication, it may be misdiagnosed as arterial embolism when presented with acute ischemic symptoms. Surgical resection is recommended because of recurrence or a low success rate with aspirat...
The unique dual blood supply of the liver (75% portal venous, 25% hepatic arterial) makes multiphase helical computed tomography (CT) a highly suitable technique for hepatic evaluation with imaging in two (arterial and portal venous) or more phases. Multiphase helical CT has become an important tool in the detection and characterization of hepatic tumors. In some situations, hemodynamic changes...
BACKGROUND After aortic valve replacement, left ventricular afterload is often characterized by the residual valve obstruction. Our objective was to determine whether higher systemic arterial afterload-as reflected in blood pressure, pulsatile and resistive load-is associated with adverse clinical outcomes after transcatheter aortic valve replacement (TAVR). METHODS AND RESULTS Total, pulsati...
Myocardial characterisation is conventionally assessed using cardiac MRI (cMRI). Delayed dual-energy computed tomography (CTD) may provide useful myocardial in patients with acute infarction. This prospective case series described experience and feasibility of this technique contemporary, real-world practice. Patients admitted to Auckland City Hospital, New Zealand, infarction found have left v...
The severity of pulmonary hypertension was evaluated by right cardiac catheterization in 89 patients with stable chronic obstructive pulmonary disease, both at rest and during maximum treadmill exercise. Thirty-one patients were found to have pulmonary hypertension at rest, defined as a mean pulmonary arterial pressure of 20 mm Hg or more. Although the remaining 58 patients had normal mean pulm...
purpose: to evaluate the nature of obstruction in difficult irrigation after probing for congenital nasolacrimal duct obstruction (cnldo). methods: in a prospective interventional study, the nature of obstruction in 75 eyes of 68 children aged between 12 and 23 months with cnldo who had difficult irrigation after probing was evaluated. all patients underwent monocanalicular silicone intubation....
Several physiological and pharmacological influences are known to alter the degree of obstruction in hypertrophic obstructive cardiomyopathy (hypertrophic subaortic stenosis, muscular subaortic stenosis). Increased left ventricular-arterial systolic gradients in the beats following a ventricular ectopic contraction and following the administration of isoprenaline and of digitalis are probably r...
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