Heart surgery and personality changes

Cardiac Health Admin Ask Doctor T 3 Comments


My husband had a heart attack 17 yrs. ago at age 37. He had a 5-way bypass surgery at age 40. After the surgery there was a drastic change in his personality. I expected that recovery would take a little while, but he was completely different.  He went from being an easy-going, sharp, good-natured person to very angry and abusive. I was very confused and tried to get info from Drs., etc. but no one seemed to know what was going on, and didn’t take it very seriously. Instead of getting better, he kept getting worse, and his personality was completely different. He wasn’t the same person at all. We had a lot of problems for years. He has gotten better little by little, and no longer has the anger problem, but he isn’t the same person at all. He’s not nearly as sharp as he was and his personality is completely different.Do you have any idea what’s going on with him? It makes me very sad because I feel like I have lost my best friend.


Hi Ginny,
I am so sorry to hear about this. The kind of changes your husband suffered after his bypass surgery are most likely caused by mini strokes. A small percentage of patients complain of mental changes that may be the result of new mini-strokes, also called transient ischemic attacks (TIA), because the symptoms are like those of a stroke but do not last long. A TIA happens when blood flow to part of the brain is blocked or reduced, often by a blood clot. After a short time, blood flows again and the symptoms go away. With a stroke, the blood flow stays blocked, and the brain has permanent damage. In your husband’s case it appears permanent damage may have happened.

A study, published in 2001 indicated that half of people undergoing bypass surgery developed memory or thinking problems in the days following it, and that these problems were occasionally still evident five years later. Another study found that short-term confusion, memory loss, and poorer problem solving and information processing may happen in some patients after bypass surgery, but are usually temporary and reversible. Most people return to their pre-bypass level of function between 3 and 12 weeks after surgery. Long-term changes occur, too, but these are usually mild and tend to affect things such as how fast you can solve problems or process information.

It doesn’t help for you to know that this is a rare event, certainly to the extent you mention:
Treatment starts with, first of all, recognizing the problem and is aimed preventing other strokes and help with functional rehabilitation. If indeed his problems were a direct result of the surgery and not associated other medical problems, full recovery should be possible.
Hope this helps,
Dr T

Comments 3

  1. I noticed changes in my father after heart surgery. He recovered some of his memory but I attributed it to anesthesia. I heard anesthesia in senior citizens can cause temporary fuzzy memories.

  2. Hi Ginny
    I came across this post while doing some research. I am a spiritual healer – but before you pass any judgment you may want to listen to what I have to say. I deal with the human energy field and it has a lot to do with when it is weakened or damaged it can change our mood our personality the way we think and the way we feel. In your husband’s case after the heart attack his human energy field became compromised and basically and to put it bluntly a spirit has entered his energy field influencing the person he is today. My technique works and I am successful at helping others with similar issues. I am reputable and you can see this by going to my website whitelightandwishes.com if you have any questions please ask. Warmest regards Ruth 🙂

    1. Personality changes after heart surgery are most likely caused by (mini) strokes and treatment should be focused on diagnosis, initial treatment and the prevention of recurrences. Treatment such as what you suggest may play an important adjunctive role and is unfortunately frequently neglected.
      Dr T

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