The role of cardiac MR in identifying annulus paradoxus, a specific marker for constrictive pericarditis
نویسندگان
چکیده
Background Distinguishing constrictive pericarditis from restrictive cardiomyopathy can be challanging. In normal subjects and many cardiac pathologies, the lateral mitral annulus compared to medial demonstrates more longitudinal excursion. This is due to the presence of more longitudinal fibres and lubrication offered by pericardium. Annulus paradoxus is a term used to define reversal of this phenomenon due to tethering of the pericardium and has been extensively reported as a specific marker of constrictive pericarditis in echocardiography by using tissue doppler imaging (TDI). TDI is a pulse wave doppler technique and has limitations due to aliasing and angle of interrrogation. We define an alternative way of demonstrating this phenomenon on CMR that will provide additive diagnostic power due to better spatial resolution.
منابع مشابه
Clinical signs in medicine: pulsus paradoxus.
Historical Aspects The reduction in pulse volume during inspiration was first described by Lomer in 1669 in constrictive pericarditis1. A similar finding was described by Floyer and later by William in 1850 in bronchial asthma1. Adolf Kussmaul (Freiberg, Germany) coined the term pulsus paradoxus in 1873 in three patients with constrictive pericarditis. The paradox was: (1) the discrepancy b...
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