RT Journal Article SR Electronic T1 Left anterior fascicular block: an ischaemic response during treadmill testing. JF British Heart Journal JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 51 OP 52 DO 10.1136/hrt.65.1.51 VO 65 IS 1 A1 Y Chandrashekhar A1 H C Kalita A1 I S Anand YR 1991 UL http://heart.bmj.com/content/65/1/51.abstract AB A patient in whom exercise induced reversible ischaemic left anterior fascicular block is reported. Glyceryl trinitrate relieved the fascicular block. Coronary angiography showed a 90% obstruction of the left anterior descending artery. The left anterior fascicular block induced by exercise disappeared after a successful coronary angioplasty.