metal detectors should not cause an issue since there may be very little if any metal but i do not know what type of heart valves you have or the details of your surgery. for this reason i advise you to discuss this patient-specific issue with the cardiovascular surgeon who is seeing you.
i have 2 mechanical heart valves. i'm flying for the first time. will there be a problem with the metal detectors. is there anything special i need to do.