Yes, it is possible to prevent keloid scars after heart surgery. Here are some tips to help reduce your risk during heart surgery recovery: avoid exposing the scar to sunlight, keep the incision area clean, and follow your doctor's instructions for the wound healing process. Additionally, you can use topical products such as silicone gel sheeting or pressure therapy garments to apply gentle pressure to newly formed scars. It is important to remember that the development of keloid scarring after heart surgery is highly individualized and can vary widely from person to person. If you notice any irregular production or a noticeable scar on your chest wall, it is best to seek evaluation from experienced keloid experts who can help you find the most effective treatment plan for reducing the appearance of your scars and preventing further keloid growth.