This ECG was taken from a 66-year-old woman who presented to the emergency department complaining of chest pain and shortness of breath. She attributed her symptoms to her COPD, but stated that her aerosol treatment had not helped. She waited for some time before deciding to go to the hospital, then drove herself. In the emergency department, she had blood drawn, an I.V. started, and an aerosol treatment of albuterol. She was then taken to the radiology dept.