The advantage is that long-term anticoagulation is not required. The disadvantage is that it will need replaced. Here are some additional questions. Not all will apply to you. Again this would depend upon the individual case, your preferences and the surgeon.
Any second surgery is more complex but the risks are still low.
I hope you find this information useful. Information provided in the heart forum is for general purposes only. Only your physician can provide specific diagnoses and therapies. Please feel free to write back with additional questions. The Heart Center website contains a directory of the cardiology staff that can be used to select the physician best suited to address your cardiac problem.