ECG Challenge: A 90-Year-Old Woman with Intermittent Lightheadedness
The patient is a 90-year-old woman who presents to urgent care with a 2-week history of intermittent lightheadedness. She denies syncope, chest pain, shortness
29 May 2018 ... In LBBB, the depolarization of the heart is reversed, resulting in prolonged QRS duration; LBBB may be caused by aortic stenosis, dilated ...