I am sorry to hear that your grandmother is in the hospital again, and it does sound like she has several very serious medical conditions that you all are trying to deal with all at once. In situations like these, it is important to maintain close communication with the primary medical team that is managing her stay in the hospital. Take time to make sure your questions are answered; sometimes, it can be helpful for you all to write your questions down so that you do not forget them when the medical team comes by.
Regarding the possibility that your grandmother may need a pacemaker. Pacemakers are commonly needed in elderly people whose hearts are suffering from multiple other problems such as the low heart rate that your grandmother has. Sometimes pacemakers can stabilize at least this one problem, allowing the team to focus on other problems. There are some risks to placing a pacemaker however, such as infection and bleeding
, and these risks should be weighed carefully against the potential benefits.
Again, your grandmother's primary medical team are the ones who can help you make these decisions, in collaboration with your grandmother's cardiologist
and other specialty physicians.