Specific ECG criteria in LBBB patients, including concordant
ST-segment elevation (criteria 1) or depression (criteria 2) or
pronounced discordant ST-segment elevation (criteria 3), in
specific ECG leads and an alternative ECG criteria, including
ST-segment depression or elevation discordant with the
QRS complex with a magnitude of at least 25% of the QRS
complex (alternative criteria 3), together with suggested
high-sensitivity cardiac troponin ((h)s-cTn) thresholds (eg,
hs-cTnT ≥42 ng/L at presentation), allow an accurate and
immediate triage to coronary angiography in patients with
LBBB and symptoms suggestive of AMI.
Original criteria
Modified criteria
ST-segment elevation (criteria 1) or depression (criteria 2) or
pronounced discordant ST-segment elevation (criteria 3), in
specific ECG leads and an alternative ECG criteria, including
ST-segment depression or elevation discordant with the
QRS complex with a magnitude of at least 25% of the QRS
complex (alternative criteria 3), together with suggested
high-sensitivity cardiac troponin ((h)s-cTn) thresholds (eg,
hs-cTnT ≥42 ng/L at presentation), allow an accurate and
immediate triage to coronary angiography in patients with
LBBB and symptoms suggestive of AMI.
Original criteria
Modified criteria
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