A Vermont couple has donated $1 million to Fletcher Allen Health Care in Burlington for heart research.
The grant from Tom and Mary Evslin of Stowe will go toward research into improving treatment for atrial fibrillation, a common type of rapid heartbeat.
About 5.5 million Americans have atrial fibrillation, which raises the risk for stroke and death.
The hospital says medication often doesn't provide a cure. An alternative is catheter ablation which uses heat to change how electricity flows through the heart.