New to this site! My elderly Father, aged 89, is currently taking 50mg Metoprolol (sustained release) and Xarelto 20mg. Those are his only meds. His History: includes 6 bypasses in 2001, successful. Virtually nothing cardiac related until his severe aortic stenosis was found in early 2021. He also has A-flutter. Aortic valve replaced June 2021, goes home, complete heart block, back via helicopter and gets pacer 2 days after being discharged. My question: This guy has never fallen until September of 2021. He's now fallen 4x! He reports he's incredibly fatigued, leg weakness, and real lack of balance. We are all panicked b/c of the blood thinner, etc, etc. Says it feels as if his legs don't work, knees buckle, etc. Is this the metoprolol? He wore a Ziopatch last month and had some runs of SVT - all shorter than 20 seconds, highest HR was 160. Now cardiologist wants to raise Metoprolol to 75mg and my sister and I (both nurses) are uncomfortable with that. All my Dad wants to do is be balanced and stable enough to get into his awesome Swiss tractor and mow the field. He's normally a very active guy. He's had some dependent edema lately too - rectified with some PRN Lasix/Potassium. Otherwise healthy....mind as sharp as ever! Would love some thoughts! <3