left atrial appendage occlusion (LAAO) devices
Left atrial appendage occlusion (LAAO) devices on the market include Abbott’s Amplatzer Amulet (left) and Boston Scientific’s Watchman (right). [Images courtesy of Abbott and Boston Scientific]

Women appear more likely than men to experience adverse events or lengthened hospital stays from left atrial appendage occlusion (LAAO) devices, the FDA announced today.

In a letter to health care providers, the FDA said researchers have yet to determine the reason for the difference — and that it is working with device makers to understand the cause.

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