نتایج جستجو برای: aortic stenosis
تعداد نتایج: 160989 فیلتر نتایج به سال:
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...
In severe valvular aortic stenosis, obstruction to ventricular contraction results in prolonged ventricular systole and diminished peak flow velocity. This may translate into weak or impalpable peripheral arterial pulses. We report a case of severe aortic stenosis associated with an impalpable carotid pulse (in the absence of local carotid artery disease) that became easily detectable following...
OBJECTIVE To investigate the presence of myocardial fibrosis determined by fragmented QRS in patients with severe aortic valve stenosis. SUBJECTS AND METHODS Eighty-seven consecutive patients with severe aortic valve stenosis and 83 age- and gender-matched control subjects were enrolled into this study. Severe aortic valve stenosis was defined as an aortic valve area <1 cm(2), a Vmax >4 m/s, ...
In a search for an indirect estimate of severity, data from 40 patients with pure aortic stenosis have been analyzed. Calculated aortic valvular areas ranged from 0.5 cm2 to 2.4 cm.2 Both aortic systolic upstroke time and the rate of aortic pressure rise were significantly altered by aortic stenosis; neither permitted reliable estimates of severity of the stenosis. An estimate of arterial compl...
As the population continues to age, aortic stenosis remains as the most prevalent valvular disease in Western countries. The number of elderly patients with aortic stenosis continues to pose both a diagnostic and therapeutic challenge. Despite new advances such as transcatheter aortic valvular replacement (TAVR), there is still much patient-provider decision making that needs to take place give...
DOI: 10.5935/abc.20180030 Low-flow low-gradient aortic stenosis with low ejection fraction is still one of the main challenges not only for echocardiography but to cardiology itself. It is the very late stage of aortic stenosis that portends very poor prognosis with medical treatment, in addition to a very high operative mortality.1 In subjects with that condition, dobutamine stress echocardiog...
Partial muscular inter-ventricular septal defect (VSD) or Pacman heart is a rare congenital or occasionally acquired anomaly. Concurrent Pacman heart and Shone's complex are extremely rare and have never been reported until now. We described a 37-year-old male patient with congenital Pacman heart, flail mitral valve (FMV), and a history of multiple congenital anomalies, including subvalvular ao...
C et al. Influence of pre-operative left ventricular contractile reserve on postoperative ejection fraction in low-gradient aortic stenosis. Outcome after aortic valve replacement for low-flow/low-gradient aortic stenosis without contractile reserve on dobutamine stress echocardiography.dictors of outcomes in low-flow, low-gradient aortic stenosis: results of the multi-center TOPAS Study. B-typ...
Echocardiographic analysis of the movement of the posterior mitral valve leaflet in 60 patients with lone mitral stenosis, 35 patients with aortic stenosis, and 18 patients with aortic and mitral stenosis showed a spectrum of initial posterior mitral valve leaflet movement in early diastole. The classical anterior movement was seen in 36 out of 60 patients with mitral stenosis (60%), and 8 out ...
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