An AVM, or arteriovenous malformation, is a tangle of abnormal and poorly formed arteries and veins that can occur in any part of the body. If an AVM bleeds, it can be life-threatening. The answer to the question of whether an AVM can bleed again depends on the type and location of the AVM, as well as the treatment that was received.
If an AVM is successfully treated with surgery, then the risk of it bleeding again is greatly reduced. However, even with successful surgery, there is still a small chance of recurrence. This is because not all of the abnormal vessels may have been removed, and some may develop again over time. Additionally, AVMs can be located in areas of the body that are difficult to access surgically.
If an AVM is treated with embolization, which is a minimally invasive procedure, then there is also a small risk of recurrence. Embolization is a procedure in which a catheter is inserted into the affected vessels to block them off and prevent blood from flowing through them. While this is generally successful in preventing bleeding, it does not guarantee that the abnormal vessels have been completely eliminated.
Finally, if an AVM is treated with medication alone, then there is an increased risk of recurrence. Medication can help reduce the size of the AVM, but it cannot prevent it from bleeding again.
In conclusion, while it is possible for an AVM to bleed again, the risk of recurrence is greatly reduced if the AVM is successfully treated with surgery or embolization. Therefore, it is important to seek medical attention and follow the recommended treatment plan.