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1981-Apri
l Clinical trials for development of dual chambered (DDD)
pacemaker
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1982-November
CSA performs 10,000th coronary bypass operation at Saint
Thomas
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1985-March
First heart transplant in Tennessee done at Saint Thomas
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1988-July
Began use of automatic implantable cardiac defibrillator
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1991-June
Established cryopreserved homograft valve and homograft
saphenous vein bank at Saint Thomas
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