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Walk the Even Hospital Database by book and chapter — the raw source passages that ground Ask, DDx, and the rest.

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contentuptodate· Content· item f12_56_13199

©2013 UpToDate ® Print Email Algorithm to localize accessory pathway in preexcitation syndrome Mapping algorithm for localization of accessory pathway in the preexcitation syndrome using the morphology of the delta wave on the electrocardiogram. R/S: R-S wave ratio; +: positive Δ; ±: isoelectric Δ; -: negative Δ wave; Sens: sensitivity; Spec: specificity; PPV: positive predictive value; LL: left (L) lateral; LAL: L anterolateral; LP: L posterior; LPL: L posterolateral; LPS: L posteroseptal; RA: right (R) anterior; RAP: R anterior paraseptal; RAL: R anterolateral; RL: R lateral; RPL: R posterolateral; RP: R posterior; AS: R anteroseptal; MS: midseptal; RPS: R posteroseptal; CS/MCV: coronary sinus/middle cardiac vein; %: percent. Data from Arruda M, Wang X, McClelland J, et al, Pacing Clin Electrophysiol 1993; 16:865.