The relationship between abnormal echocardiographic septal motion and myocardial perfusion in patients with significant obstruction of the left anterior descending artery.

authors have further suggested that AESM implies not only a critical left anterior descending lesion, but that the lesion is proximal to the first septal perforator branch.10 13 Despite the usefulness of coronary angiography in defin- ing the presence of significant obstruction of the major cor- onary arteries, the procedure does not allow visualization of small vessels and therefore does not provide complete information concerning resting myocardial perfusion.