Dear hopeful the story that you are about to hear is one of Terror horror and submission. 
It may be easier for me to just dictate a small part of this to you through my iPhone compared to typing it with my big fat fingers on a tiny little keyboard.
Otherwise I'm not quite sure how to get back onto the I guess blog or discussion.
The essence of what I'm looking for is that while on Coreg my lower body is retaining fluid ie swelling swollen and I need to get rid of this water weight.
I came off of Keurig cold turkey when immediately on to metoprolol my pre-surgical blogger and the doctors use LASIK in a two-day. I voided by way of catheter approximately 8 liters so far.
I have been released from the rehab facility without any incidents of pneumonia SARS MRSA or any other funky hospitalization disease so I feel ahead of the game but yet still have swelling in my lower extremities.
I have some anxiety I'm a little panicky and find a difficult to lay on my back with my feet up after having just a 6-way bypass and Maze ablation two hope my atrial fibrillation..Please excuse the autocorrect here on my cell phone I can only actually see two or three lines of text and I find it important to get this message back to you

Hi @cabgx6maze517. Interesting that your moniker reflects your recent surgery! I know that some people taking Carvedilol have symptoms of discomfort, but not me. I'm taking 25mg of Carvedilol (Coreg) twice a day for its double purpose -- relieving a-fib on my pulse and reducing my blood pressure. No problems for me from this medication. Perhaps that's related to the fact that I haven't had heart surgery of any kind (including cardioversion, ablation, or Maze procedure). Can I assume that your a-fib is under control, given the MAZE procedure you experienced? What keeps you awake? Was your blood pressure high before your surgery, or is it now? We would benefit form more information about your "horrific experience" with Coreg "during" your surgery, if you can share that.

As Teresa wondered a few hours ago, your doctor's response to your medication troubles is pivotal to relieving your symptoms. It also would be very helpful to those of us who share your symptoms. Martin

My primary care physician also is not in doubt that Carvedilol is the culprit, as well as the prescribing physician being in denial of the adverse effects. Our current path toward remedy is simply: determine the status quo> reduce the swelling of the extremities, using a reduced quantity of Lasix continue with but increase the Metoprolol and observe, repeat and observe with blood work to monitor kidney and liver function. Continued as outpatient while within the VA system.

@cabgx6maze517 Hi Tom: I'm glad to hear that you received some confirmation about your thoughts regarding the Carvedilol and that you have a "plan of action" to help with your symptoms. I wish you well and do hope that the swelling begins to be reduced and you begin to recover from this experience. Best wishes and please keep in touch with Mayo Connect. We value your sharing of your experiences and look forward to hearing from you again. Teresa

I am not a newbie when it comes to surgery, For I had my first double bilateral carpal tunnel releases in early 1985 the left hand radial and ulnar, with a repeat of the left hand before the year was over. By a surgeon whom I occasionally had lunch with at a DC area hospital where I worked as a Bio~med Tech in the clinical engineering department for a couple years, with a 2yr tech degree from Penn State University. I did an internship, paid off my student loans working is a couple diff facilities and left the field.

With the guidance of my PCP and cardiologist, I went cold turkey off the Carvedilol and have returned to pre surgery Metoprolol lowest level and increased to regular dosage, which has helped my body regain control of my BP swings. We have on two occasions used Lasix to reduce edema in lower legs and feet ( especially the left), with positive results , including wearing compression sox to reduce swelling.

I am keeping daily record of BP HR and Po2, and the only issue to address is a minor inconsistent Sinus rhythm, which I am watching trend toward higher numbers from low, and waiting to hear from arrhythmia specialist to guide toward specific technique for control.

things have settled down quite a bit for my body, mind and soul. Peace of mind has begun to set in. Time is again on my side.

I am looking for the happy medium between Haste and Hesitation, It would be a waste if I missed it.