First degree AV block echocardiography
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First degree AV block Microchapters |
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Diagnosis |
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Treatment |
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Case Studies |
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First degree AV block echocardiography On the Web |
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American Roentgen Ray Society Images of First degree AV block echocardiography |
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Risk calculators and risk factors for First degree AV block echocardiography |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Ahmed Elsaiey, MBBCH [2]
Overview
Echocardiography
f echocardiography in patients with symptoms suspected to be cardiac in origin, including symptoms potentially caused by bradycardia or conduction disorders such as syncope, or lightheadedness /presyncope with signs or symptoms of cardiovascular disease known to cause such symptoms (eg, aortic stenosis, hypertrophic cardiomyopathy or heart failure).S4.2.4-12 Although no prospective studies have defined the outcome of echocardiography-guided management in asymptomatic LBBB, the presence of LBBB in patients referred for echocardiography in evaluation of suspected congestive heart failure confers nearly a 4-fold increased likelihood of left ventricular systolic dysfunction.S4.2.4-3 2. Transthoracic echocardiography can identify various structural cardiac abnormalities underlying bradycardia or conduction disturbance, including cardiomyopathy, valvular heart disease, congenital anomalies, tumors, infections, infiltrative processes, immunologically mediated conditions, and diseases of the great vessels and pericardium.S4.2.4-12 However, the yield is higher when there are clinical indications of structural disease, including in patients with syncope who manifest signs or symptoms of cardiac disease (eg, bradycardia or conduction disorders).S4.2.4-11,S4.2.4-22,S4.2.4-24 Transesophageal echocardiography can be a useful adjunct for endocarditis with or without perivalvular complications, aortic dissection, or unruptured sinus of Valsalva aneurysm which have all been occasionally associated with bradycardia or conduction block.S4.2.4-58–S4.2.4-64