Costco, slow but sure? Message Board

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Non-Tech : Costco, slow but sure?

COST 913.59

+0.6%

Nov 28 9:30 AM EST

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To: Mat Miller who wrote (350)	1/17/1998 2:42:00 PM
From: WalleyB	Read Replies (1) of 1147

Mat, >They are connected by screwing in the ends into the heart wall! I heard a doc on the radio the other day mention a time when the profession beleived that just touching the heart with anything would kill it. Isn't it mind boggling that they can not only touch it, hold it, cut it out and replace it and apparently screw into into it! I am intriqued by the mechanics of this. Did they first install a socket or sleeve for the screws to fasten to - which would provide a broader surface area of the heart for the screws to grab? Or simply bore into the wall of the heart muscle? It would seem to this laymen (that's an understatement) that the muscle would loosen around the wires over time and the wires would fall out...hey there's something to keep you up at night wondering about <g>. When ever I lay on my side at night and the sound of my pulse is picked up by the ear pressed to the pillow I listen for a while, then it's all I can do listen for one more beat until I turn away from it. Must be some manifestation of hypochondria. Ever seen that simulated heart pump at the Pacific Science center? You squeeze this bladder that fits into your hand and move hydraulic fluid through a tube. The Fluid and pressure is calibrated to equal the average force required for a heart to pump one time for each squeeze. I think my hand petered out after about 5 or 6 squeezes. OK so I am a wimp, Hulk Hogan could no doubt do it 20 times or more but the effort required is unreal. Seen Titanic yet? I think the wife has me down for that today. Talk later jim

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