QRS amplitude - cardioegypt2011
QRS amplitude - cardioegypt2011
QRS amplitude - cardioegypt2011
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5-Maximum Deflection Index<br />
( MDI)<br />
o It is defined as the shortest time to<br />
maximum positive or negative deflection in<br />
any precordial lead divided by the <strong>QRS</strong><br />
duration.<br />
o A cut-off value of 0.55 has high sensitivity<br />
(100%) and specificity (98%) for epicardial<br />
VT.<br />
R&M Solutions<br />
o This was mainly adopted for epicardial VTs<br />
arising from sinuses of Valsalva.<br />
www.rmsolutions.net
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