Atrial fibrillation with left bundle branch block and intermittent right axis deviation during acute myocardial infarction

Changing axis deviation and paroxysmal atrial flutter associated with subclinical hyperthyroidism

“…It has also been reported that increased factor X activity in patients with subclinical hyperthyroidism represents a potential hypercoagulable state [4,8]. Rarely, it has also been reported intermittent changing axis deviation during atrial fibrillation [9][10][11] and during atrial flutter [7]. We present a case of paroxysmal atrial flutter and changing axis deviation associated with subclinical hyperthyroidism, in a 76-year-old Italian man.…”

Left Bundle Branch Block With Intermittent QRS Axis Switching Observation of a Hypertensive Patient for 18 Years

“…They also described a 78-year-old woman with atrial fibrillation, CLBBB with intermittent RAD, and EF of 45% who had been admitted to hospital with acute myocardial infarction. 8) Intermittent RAD was identified at the time of admission. Coexistent predivisional LBBB and left posterior hemiblock were suggested.…”

“…The QRS axis of CLBBB is usually normal axis or LAD. Only a few reports have described CLBBB with a changing QRS axis, [4][5][6][7][8] whereas all reported cases describe acute symptoms and follow-up periods ranging from 1 day to 10 months. The present patient developed a narrow QRS complex over 6 years followed by LBBB with a changing QRS axis over the next 12 years.…”

Changing axis deviation and intermittent right bundle branch block during acute myocardial infarction

“…Changing bundle branch block [4,5], new right bundle branch block [6], right bundle branch conduction disturbances [7] have been reported in literature. Changing axis deviation has been reported alone [8] or during acute myocardial infarction [4,9] also associated with atrial fibrillation [10]. Intermittent right axis deviation has been rarely reported in the presence of left bundle branch block [11,12] also during atrial fibrillation [13] and with acute myocardial infarction too [10].…”