Which LAA shape resembles a swimming bird and is more complicated due to its bends?

The LAA, or Left Atrial Appendage, can indeed take on various shapes, each with its anatomical implications. The "swan" shape is characterized by its long, slender neck and the elegant, flowing curves that resemble the silhouette of a swimming bird. This particular morphology can present challenges during occlusion procedures due to its complex anatomy that includes bends and potentially difficult angles. The intricate design of the LAA in this shape necessitates careful planning and technique during intervention to ensure successful closure and to minimize the risk of complications.

In contrast, the other shapes like "windsock," "cauliflower," and "chicken wing," while having their own complexities, do not evoke the same level of challenge when it comes to their anatomical pathways and occlusion interventions as the swan-shaped LAA. Understanding these shapes is crucial for clinicians to tailor their procedures appropriately and anticipate the challenges that may be encountered based on the anatomical variation of the appendage.