Time on Pump vs. Cross clamp time

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wlaldridge

Anyone cast light on this:

When meeting with my surgeon for the first time, I was questioning the time I would be "on the pump". He made a clear distinction between that and the time the aorta is cross clamped. He said that was the more critical time.

Is this just because during cross clamping the heart is not being fed fresh oxygen via the arteries??
 
More importantly is the effects of X-clamping

More importantly is the effects of X-clamping

on 'Troponin' and the heart's ability to restore itself to its normal level of Troponin, which comes in two types.

If I can find the paper on it I'll post.

But my remembrance of cross clamp time two years ago had more to do with the ability of the heart to resume its pumping function once th aorta is unclamped. The X-clamping effected different people in different ways, and their hearts' varying ability to restore normal rates of Troponin production.
 
Here's one source link. You need Adobe Acrobat

Here's one source link. You need Adobe Acrobat

to view it.

Let me know if you can't and I'll copy and paste it.





AVR; 4/00; C-E bovine pericardial; ccf; cosgrove
 
http://www.ub.rug.nl/eldoc/dis/medicine/j.c.j.m.swaanenburg/c9.pdf

http://www.ub.rug.nl/eldoc/dis/medicine/j.c.j.m.swaanenburg/c9.pdf

/....there...
 
Golly--I thought a Master's Degree was going to last me a life time, but now I need to go further. These academic research articles make me feel "pumpheaded" long before being on the pump. I don't think getting a PhD. will help me at this point. But,
Seriously

Thanks for the article, it does scare me more and raise more questions.

I told that surgeon it was not a good thing to stop a guy's beating heart. This just proves it. He insists that it beats the alternative. Still not having symptoms makes me somewhat unwilling to have this thing done to me. I guess just one fainting spell or bout of angina would be enough to push me back to being a believer. So far being "sick" is only an intellectual knowledge. Some pain would make it more "emotional" and "real"

Thanks for the post.
 
It may be that you don't recognize the symptoms and won't until after your surgery. This was the case with me....it was so slow and insidious that even though I never had pain, I realized later that I had made changes to my life to accomodate my lack of cardiovascular reserve.

I stopped mowing the lawn, washing the car, running to meetings, vacuuming, etc., all unconsciously.

Just a thought...
 
wlaldredge: I 'managed' my aortic and

wlaldredge: I 'managed' my aortic and

mitral valve disease for nearly 50 years after two bouts of rheumatic fever, one at age 6 and the other as a 13 year old.

I had a functionally bicuspid aortic valve for a long time; my mitral still has +2 leak.

Depending on the type of life you wish to live, its 'style', your weight, conditioning, general health otherwise, immune system and a variety of other factors such as your stress levels (or lack of them) , lipid panel, thyroid output, etc., you could go until a 'minor' symptom rears its ugly head, like I did.

For me it was one episode of Congestive heart failure which scared the hell out of me but was in reality no big deal to the medical community. I thought I was going to die because I could not 'catch my breath'.

To the cardiologists it was a signal for more invasive testing including the definitive one, the catheter, which revealed a far more damaged valve under load (exercise and strain) and therefore immediate replacement was recommended.

From onset of CHF to replacement was nine months. In the interim my LV got weaker and more stretched. (It can deteriorate real fast after CHF).

Provided your Ejection fraction is healthy +50%, preferably +55,
your LV is in good shape with little to any hypertrophy and NO other CV problems, you could manage till symptomatic depending on what, as John says, you are willing to relinquish in your activities.

AV will have to be done one day, and the technological advances may make it worthwhile. But the risk is that when you come off the pump and X-clamp you want the strongest LV action you can get on restart. I think if I had stuck to my routine exam each year I might have had my AV replaced WITHOUT symptoms such as CHF in my case and possiblly saved more of my LV output. It will likely never get much shrinkage from its 4.5 cm size now, two years and 4 months post-op.

Preserving LV function to its maximum should be a primary focus.

Postponing the Timing is a bit of a luxury in this somewhat 'elective' environment but it could work to a disadvantage if the fear of surgery overrides the benefits. Those benefits are admittedly hard (but not impossible) to calculate without symptoms. How can you know for certain what they will be since you won't 'feel' much better than you do now?

But an ounce of prevention, etc...... may be the operative motivator.

On the other hand, as one surgeon told me, the Very best surgery, is No surgery.

Trust the best cardiologist you can find to suggest to you when
is the optimum time to get it done.
 
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