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Tiger Stripes
Author(s) -
Kerut Edmund Kenneth
Publication year - 2007
Publication title -
echocardiography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 62
eISSN - 1540-8175
pISSN - 0742-2822
DOI - 10.1111/j.1540-8175.2007.00431.x
Subject(s) - reprint , citation , library science , medicine , computer science , physics , astronomy
On occasion a high amplitude band-like signal is noted on Doppler spectral recordings of valvular regurgitation (Fig. 1). However, clinically these “tiger stripes” are most often noted with porcine mitral prosthetic valves (Fig. 2), and may be indicative of an acute flail prosthetic leaflet.1–5 These band-like signals appear to be associated with an intracardiac oscillating structure,6 with the first band (lowest frequency on the Doppler recording) representing its fundamental frequency. These structures vibrate with a single frequency (not chaotic) with several harmonic overtones.7,8 These tiger stripe frequencies may occur in the absence of blood flow turbulence.6 Also, the observed Doppler fundamental frequency (and amplitude) appears to be proportional to regurgitant flow rate across the valve.7