Results 301 to 310 of about 64,412 (328)

Right ventricular outflow tract obstruction

2014
Conditions that result in right ventricular outflow tract obstruction, i.e. valvular, supravalvular, and branch pulmonary stenosis, are discussed.
Demosthenes G. Katritsis, Bernard J. Gersh, A. John Camm   +2 more
openaire   +2 more sources

Acquired right ventricular outflow tract obstruction in twin‐to‐twin transfusion syndrome; a prospective longitudinal study

Prenatal Diagnosis, 2018
The pathophysiology of right ventricular outflow tract obstruction (RVOTO) in twin‐to‐twin transfusion syndrome (TTTS) recipients is incompletely understood. We aimed to investigate the development and spectrum of RVOTO in TTTS recipients.
S. Eschbach, A. D. T. ten Harkel, J. Middeldorp, F. Klumper, D. Oepkes, E. Lopriore, M. Haak   +6 more
semanticscholar   +1 more source

Left ventricular outflow tract obstruction

2009
Left ventricular outflow tract obstruction (LVOTO) accounts for 5–10% of all congenital heart defects. LVOTO occurs at the valvar (70%), subvalvar (14%), and supravalvar (8%) level, and several levels of obstruction often coexist (8%) [1]. Another type of muscular subaortic stenosis, present with hypertrophic cardiomyopathy, is known as hypertrophic ...
Michael D. Tsifansky, Ricardo A. Munoz, Victor O. Morell   +2 more
openaire   +2 more sources

Left ventricular outflow obstruction

1986
The echocardiographic hallmark of a congenitally stenotic aortic valve is the presence of systolic doming [1]. During ejection, the aortic cusps curve toward the center of the aortic lumen without separating completely. M-mode echocardiography is not reliable in the detection of this restricted valvular opening as echoes from the base of the doming ...
openaire   +1 more source

Right ventricular outflow obstruction

1986
Pulmonary valve stenosis can be diagnosed only indirectly by M-mode echocardiography: the diagnosis is based essentially on the effects of abnormal presystolic ventricular pressure on pulmonary valve opening [1].
openaire   +1 more source

Dynamic left ventricular outflow obstruction experimentally induced

American Heart Journal, 1966
Abstract In 15 unanesthetized dogs the administration of toxic doses of amphetamine resulted in the prompt appearance of a high degree of subvalvular and left ventricular outflow tract obstruction. Hemodynamic, angiocardiographic, and postmortem findings revealed striking similarities between the experimental model and the clinical disease idiopathic
E G, Zalis, T W, Inmon, G D, Lundberg, R A, Knutson   +3 more
openaire   +2 more sources

Left Ventricular Outflow Tract Obstruction

2015
Left ventricular outflow tract (LVOT) obstruction is a general term that includes all the obstructive lesions affecting the left ventricle and the aortic arch. Subaortic stenosis can be caused by fibrous rings, hypertrophied muscle, or abnormal mitral valve attachments.
openaire   +1 more source

Left ventricular outflow tract obstruction

2003
Aortic stenosis is rare in infancy. It is present in 0.004–0.34% of live births; 75% of patients are males. It ranks 9th among critical congenital heart diseases in infants (2.9%). Incidence increases with age to become the second most common congenital heart disease after ventricular septal defect in the third decade of life.
openaire   +1 more source

Left ventricular outflow tract obstruction

Catheterization and Cardiovascular Diagnosis, 1989
R S, Freedberg, I, Kronzon
openaire   +2 more sources

Left ventricular outflow tract obstruction

2016
Conditions that result in left ventricular outflow tract obstruction, i.e. valvular aortic stenosis, due to a bicuspid aortic valve, and subvalvular and supravalvular aortic stenosis are discussed.
Demosthenes G. Katritsis, Bernard J. Gersh, A. John Camm   +2 more
openaire   +1 more source