Subendocardial, nontransmural, or non-Q-wave @entity583 (NQM) carries a serious prognosis. Many previous studies of NQMI include only @entity1 without new Q waves at the time of @entity1188 . Since the site of transmural MI (by Q waves) has implications concerning extent of @entity1002 , we wondered what the extent of @entity301 and @entity1002 is among acute MI @entity1 who have neither new nor old Q waves. Furthermore, we sought to determine whether ST-T wave patterns or resting LV ejection fraction (EF), alone or combined, could separate NQMI @entity1 with significant @entity301 from those with normal or nearly normal coronaries. Therefore, we retrospectively examined angiographic and electrocardiographic data in 55 symptomatic @entity1 with NQMI. ST-T wave patterns on admission were classified as either @entity63 (transient ST elevation, persistent horizontal ST @entity308 , or persistent deep T wave inversion) or nonspecific. Eleven @entity1 (20%) had normal or nearly normal coronaries (N); ten @entity1 (18%) had one, seven @entity1 (13%) had two, and 19 @entity1 (34%) had three vessel @entity301 ; eight @entity1 (15%) had left main (LM) disease. Six of the 11 N @entity1 had ergonovine tests and all six were negative. Segmental LV wall motion abnormalities (WMA) were commonly observed; however, diffuse LVWMA were present only among @entity1 with three vessel and LM disease. EF was below 0.50 in 48% of @entity1 with three vessel or LM disease. Although @entity63 wave patterns were more common (P less than 0.05) among @entity1 with significant @entity301 than among N @entity1 , neither the ST-T wave pattern nor EF, alone or in combination, allowed confident @entity8664 @entity1 from significant @entity301 @entity1 . We conclude 1) A large proportion of NQMI @entity1 have @entity66 , or normal or nearly normal coronaries. 2) Despite the absence of Q waves, @entity1002 is common and the degree of @entity1002 is worse among @entity1 with more extensive @entity301 . 3) NQMI @entity1 who may have normal or nearly normal coronaries cannot be reliably separated from NQMI @entity1 with significant @entity301 on the basis of ST-T wave patterns or resting LVEF. 4) Coronary angiography appears warranted to assess the extent of @entity301 in symptomatic NQMI @entity1 .

Electrocardiographic ST-T wave patterns, extent of coronary artery disease, and left ventricular performance following non-Q-wave XXXX .

@entity1 :: ('9606', 'Species') :: ['patients'] @entity308 :: ('MESH:D003866', 'Disease') :: ['depression'] @entity66 :: ('MESH:D004194', 'Disease') :: ['LM disease, three vessel disease'] @entity301 :: ('MESH:D003327', 'Disease') :: ['CAD'] @entity63 :: ('MESH:D007511', 'Disease') :: ['ischemic ST-T', 'ischemic'] @entity8664 :: ('MESH:C536108', 'Disease') :: ['separation of N'] @entity1188 :: ('MESH:D007238', 'Disease') :: ['infarction'] @entity583 :: ('MESH:D009203', 'Disease') :: ['myocardial infarction'] @entity1002 :: ('MESH:D018487', 'Disease') :: ['LV impairment', 'coronary disease (CAD) and left ventricular (LV) dysfunction', 'LV dysfunction']
@entity583 :: (MESH:D009203,Disease) :: ['myocardial infarction']
