Yeah, the fluids mentioned here, with me it was really crazy. I don't know how much weight-wise gain my fluid was but I was so overloaded that I had NO toes, they were just faint lines on my feet which were just inflated blobs. My legs/feet were Michelen man squared. Other parts of my body too. It was frightening. I remember that I had some kind of squeezing motorized socks that I had to wear while lying down, to try to move the fluid out I guess. Swelling had gone down by when I had been discharged but just riding home in a car made one of my legs swell back up to Michelen proportions on the way home. Not fun but eventually my body got rid of all that crap (when left me about 20 pounds underweight oddly enough).
As far as Metoprolol goes I know I was on that after surgery but at some point was switched to Atenolol. Do not remember what the reasons were. Finally got off that as well (I do not have high blood BP in the first place). I was very ill just recovering from the surgery and could do nothing other than sleep/lie in bed along with forcing light exercise (walking) but I realize now that Metoprolol was to blame for some of that lack of energy.
I say that because about 5 years later I had a heart blockage which the Dr alleviated with a stent. Afterwards I was kept overnight in the hospital for observation/bleed precautions. I felt GREAT after the stent and was up & about walking the halls etc. Got up early the next morning at 6am waiting to be released. Then nurse came in and gave me Metoprolol, said I would be taking this as a precaution for several months. Within like 5-10 minutes after taking that pill I felt like I was transported to a planet with a gravitational field 100x this one. Was unbelievably weak & tired. Could not stay awake. Crawled back into bed and fell asleep. A friend who was going to give me a ride home came into my room about 2 hours later and I slept through that, did not even know he was there.
My "plan" such as it was prior to getting the stent on a Monday was to rest/recover for 2 days then go back to work that Thursday. However I found I could not function, could do nothing other than lie in bed, sleeping and just zoning out watching TV. Saw my PCP actually on Tuesday, drove myself, yet got lost on the way, did not know where I was, where I was going etc. Getting there I fell asleep in the waiting then in the exam room too. Told PCP I could not go back to work Thurs after all, was so tired could barely function (I ended up staying in the exam room & sleeping for like 30 minutes b4 I could even leave). PCP agreed I should rest up that week then reconvene following Monday.
Following Monday I was still no better energy wise. PCP lectured me that Bernie Sanders just had a stent and was back on the campaign trail. That I should not be this tired etc. Told me to get out and walk and walk. So I tried that and ended up only getting like 2 blocks and had to sit down on the curb and zone out/rest, then stumble back home like I was in a dream. I called to complain later that I could still not function, something was wrong. PCP had cardiologist call me who told me to take the Metoprolol at night instead of in the morning. Tried that, still no diff. I could NOT function behind lying in bed and sleeping all the time (note also that I had the most bizarre, realistic and scary nightmares during this time of my entire life).
After 2 weeks of this finally the Cardiologist told me to reduce the Metoprolol to 1/2 pill instead of 1 pill. The results were immediate. Next day I recovered my energy up to like 90%. Started researching Metoprolol which revealed that many people have similar issues with it, especially the bad dreams. Unfortunately in my experience Drs do not want to hear about any adverse drug effects and just treat anyone who brings up issues like this as a "problem patient".