★胸前V字,張牙舞爪,急診唬爛熊是也★

LBBB時具有QRS complex與T wave的相互非同向性原則(rule of appropriate discordance)→故當有同向性出現時為異常表現(如C、D):要想到可能有MI
Sgarbossa's Criteria(AMI in LBBB的診斷criteria)→A minimal score of 3 was required for a specificity of 90 percent
ST-segment elevation of >/= 5 mm in the presence of a negative QRS complex(2分)
ST-segment elevation of >/= 1 mm in the presence of a positive QRS complex(5分)
ST-segment depression of >/= 1 mm in lead V1, V2 or V3(3分)

圖一 from http://ems12lead.blogspot.com/2008/12/identifying-ami-in-presence-of-lbbb_15.html
圖二 from Dr.Color翻譯的書籍