Planking, while often considered a beneficial core-strengthening exercise, is not advisable for someone at high risk of aortic dissection. Here's why:

An aortic dissection occurs when the inner layer of the aorta tears, allowing blood to flow between the layers of the aortic wall, which can cause life-threatening complications. High-risk patients typically have weakened or dilated aortic walls due to conditions like hypertension, connective tissue disorders (e.g., Marfan syndrome), or previous aortic surgeries.

Planking exerts significant strain on your core muscles, leading to increased intra-abdominal pressure. This, in turn, can cause a spike in blood pressure, which puts added stress on the already compromised aortic wall. Any sudden or sustained elevation in blood pressure can increase the risk of dissection by amplifying the force against the weakened aorta.

Additionally, the isometric nature of planking, which involves holding your breath while straining (a Valsalva maneuver), can further elevate pressure inside your chest and blood vessels, further escalating the risk.

To minimize the risk of aortic dissection, it’s crucial to avoid exercises that cause sudden increases in blood pressure or require holding your breath while exerting force. It would be safer to engage in low-impact, controlled exercises, focusing on maintaining a steady heart rate and avoiding abrupt strain. Always consult with your cardiologist or a specialist to tailor a safe exercise regimen that suits your condition, but I cannot imagine they would ever advise you that planking is okay given your condition. Peace.