![]() ![]() A LCx occlusion produces ST elevation in the lateral leads I, aVL, and V5-6 (in addition to ST elevation in the inferior leads). The LCx territory covers the lateral part of the inferior wall and the left postero-basal area. An RCA occlusion typically produces ST elevation in lead III > lead II (as lead III is more rightward facing), as well as possible reciprocal ST depression in lead I and aVL. The RCA territory covers the medial part of the inferior wall, including the inferior septum. Inferior MIs primarily result from occlusion of the following two coronary arteries :ĭominant right coronary artery (RCA) in 80% of casesĭominant left circumflex artery (LCx) in 18% of cases Moreover, ST depression in aVL has been shown to be more prevalent than ST elevation in inferior leads among patients with inferior MIs. ![]() Since it is facing the superior parts of the left ventricle, it is the only lead that is truly reciprocal to the inferior wall. Lead aVL is an important lead when evaluating for inferior ischemia. This combination of findings raises suspicion for an occlusion myocardial infarction (OMI). These findings are suggestive of inferior ischemia and in the presence of active chest pain and electrical instability, must be treated as an acute process. Subtle ST segment depression and T wave inversion in leads I and aVL Well formed Q waves in leads III and aVF with small Q waves visible in lead II Progressive development of Q waves in II, III, aVF ![]() Why this EKG? This ECG highlights several important points:ġ) The identification of inferior ischemia:Īn inferior myocardial infarction (MI) is suggested by : ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |