A 65-year-old male with a history of heart failure presents to an urgent care center with shortness of breath of 2 days duration. He denies chest pain, nausea, or vomiting. He reports that he ran out of his medications about a week ago.
View the ECG and consider what your diagnosis and next steps would be. Resolution of the case is described on the next page.
(Case presented by Catherine Reynolds, MD, McGovern Medical School, Department of Emergency Medicine, The University of Texas Health Science Center of Houston.)