The doctor asked me if I am having a pacemaker, should I donate blood? Please advise me, thank you.

I have a pacemaker for more than 4 years and have checked it every 6 months, the doctor said the battery has 12 years left, but why now suddenly my heart rate drops to 41, making me dizzy, then I take a deep breath to get the rhythm The heart rate stabilized as at 60 beats/min. In 1 hour I got it about 3 times. Is this situation caused by the machine or what, doctor? So the doctor asked me to put on a pacemaker but my heart rate decreased, what should I do? Thank you doctor.

The doctor told me how to treat ventricular septal defect when I was 68 years old? Is there any risk? Thank you doctor.

I have bradycardia 40 beats/1 minute and grade 2/4 tricuspid regurgitation. Doctor tell me how to treat bradycardia with tricuspid valve regurgitation? Is there any other method besides surgery? Thank you doctor.

My father has bradycardia 52 beats/min. So the doctor asked me how to treat bradycardia? The doctor advises my father on a suitable diet