نتایج جستجو برای: coarctation
تعداد نتایج: 4936 فیلتر نتایج به سال:
t rue saccular aneurysm is exceptional in coarctation of aorta in children. a 6-year-old girl with headache and systemic arterial hypertension referred to our center for cardiovascular evaluation. physical examination revealed high blood pressure and weak lower extremity pulses. two-dimensional and doppler echocardiography and angiography demonstrated a saccular aneurysm of the descending aorta...
Background Knowledge about the volume of collateral flow provides insight into the severity of coarctation of the aorta and may be critical in planning the operative approach. There is currently no method for the quantification of collateral flow in coarctation of the aorta. In this study, we applied velocity encoded cine magnetic resonance imaging (VENC-MR) to establish the flow pattern and vo...
Tinnitus is a challenging condition to manage with no effective treatment. We report a case of lifelong tinnitus present in a patient who was cured with the surgical repair of his coarctation of aorta. The patient was a fit 37-year-old with coarctation of aorta, senserineural deafness and intractable tinnitus. He underwent a thoracotomy and tube by-pass of his coarctation of aorta. A complete r...
AIMS This study quantified hypertension load using 24-h ambulatory blood pressure monitoring after successful repair of coarctation of the aorta less than (1) or more than 10 years previously (2) and examined the influence of the surgical procedure (anastomosis or subclavian flap). METHODS AND RESULTS Ambulatory blood pressure recordings were obtained using an Accutracker II monitor every 30 ...
To establish an integrated non-invasive method for diagnosing coarctation, cross-sectional echocardiographic appearances of 48 neonates and infants with coarctation were combined with clinical information on the peripheral pulses. Measurements of the ascending aorta, aortic arch, and isthmus were made and compared with those from controls matched for weight and age. Confirmation of the coarctat...
To determine whether or not patients require cardiac catheterisation before surgery a computer based mathematical model was constructed based on decision theory. The model was specifically applied to sick infants under 3 months of age with suspected coarctation of the aorta, and a three way sensitivity analysis was carried out to assess the effects on the model of changes in the probabilities t...
This study was designed to examine the total body hemodynamics of abdominal aortic coarctation hypertension. The study quantitates both regional and organ blood flow and resistance in conscious rats both above and below an experimentally produced coarctation. The experimental group consisted of 10 male Sprague-Dawley rats with a mean pressure gradient of 68 mm Hg across the coarctation. This ex...
We performed color Doppler flow mapping in 15 patients, 1 week to 17 years old (mean 42 months), with coarctation of the aorta that was confirmed subsequently by angiography and/or surgery. Twelve patients had native coarctation and three had mild recoarctation after surgical repair. Color Doppler flow maps were analyzed with a digital analysis package and a Sony computer system. The diameter i...
OBJECTIVES We sought to assess the effect of successful stenting on the Doppler profile of aortic coarctation and to identify echocardiographic indexes that could be used for follow-up of such patients. BACKGROUND Doppler echocardiography demonstrates characteristic flow patterns in significant aortic coarctation. METHODS We undertook retrospective echocardiographic analyses before and at s...
From the time that coarctation of the aorta was first described by Morgagni in 1771 (cited by Evans, 1933) until 1944, when Crafoord and Nylin (1945) and Gross (1945) independently managed the lesion successfully by a surgical procedure, the lesion remained a curiosity which challenged the descriptive powers of anatomists and pathologists and which proved a diagnostic exercise for clinicians. T...
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