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Simplified flow-chart: cs – current sample; CAND – VB candidate; Vmax – max value of CAND; RRc – current RR interval; RRc-1 – last but one RR interval; qrs – QRS buffer; ectopic – EB buffer; susp – buffer for subsequent analysis; TPL – normal QRS template; BW – biphasic wave; RE – requirement to BW ectopic beat; RRE – reduced RE.
