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               Correlation of ECG Changes and Areas of Damage

                                       Leads with  ST segment          Affected myocardial area       Occluded coronary artery

                                       elevation

                                       V1-V2                           septal                         Proximal LAD


                                       V3-V4                           Anterior                       LAD

                                       V5-V6                           Apical                         Distal LAD , LCx , or RCA

                                       I , avL                         Lateral                        LCX

                                       II , Avf , III                  Inferior                       RCA or LCx



               4.ตรวจหำระดับเอนไซม์ของหัวใจ (Cardiac enzyme)
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