Diagnosis and Management of 1:1 Atrial Flutter in the Setting of Aortic Valve Endocarditis and Embolic Stroke.

Atrial flutter is a rapid, regular atrial tachyarrhythmia that occurs most commonly in patients with underlying structural heart disease. Spontaneous 1:1 conduction of atrial flutter is indeed rare, but its diagnosis and management is of critical importance. We describe a case of a 65-year-old man with hypertension, preserved ejection fraction heart failure, end-stage renal disease, Parkinson's disease, and Alzheimer's dementia, in whom atrial flutter was associated with 1:1 atrioventricular conduction. Our patient was hemodynamically unstable with aortic valve endocarditis and recent septic embolic stroke. This case report emphasizes the importance of recognition and management to avoid hemodynamic compromise.