Author/Editor		Bulum, Joško; Strozzi, Maja; Anić, Darko; Žlahtič, Tadej; Vitez, Luka; Bunc, Matjaž
Title		Transcatheter aortic valve dislocation into the left ventricle caused by the watermelon effect
Type		članek
Vol. and No.		Letnik 4, št. 8
Publication year		2021
Volume		str. 1-4
ISSN		2165-7920 - Journal of clinical case reports
Language		eng
Abstract		Transcatheter aortic valve implantation (TAVI) is a well-established method for treating severe aortic stenosis. Prosthetic valve dislocation immediately after deployment is a rare and feared complication. We present a case of a patient with severe, symptomatic aortic stenosis who was admitted for TAVI. During balloon inflation the valve (Edwards SAPIEN XT) dislocated into the left ventricle as a result of the watermelon effect caused by a narrow, severely calcified sino-tubular junction. A second valve of the same type and size was immediately implanted in a suboptimal position in order to reduce severe aortic regurgitation. This facilitated the use of veno- arterial extracorporeal membrane oxygenation support (V-A ECMO). The patient was thereafter stabilized and transferred for urgent surgery, where both prosthetic valves were removed. The aortic valve was replaced with an additional reconstruction of the ascending aorta.
Keywords		aortic stenosis TAVI entricular device dislocation aortna stenoza TAVI dislokacija ventrikularne naprave