larry: we re back. dwayne isom s cardiac team has performed more than 30,000 open heart surgeries. he s literally held my heart in his hand. we followed his patient, 73-year-old gerald munshine, as he underwent triple bypass surgery. take a look at this story. this all happened because i took a stress test, which i take yearly. and it showed that i had some what they call ischemia, which is the heart muscle wasn t getting enough oxygen. he could die. the reason we re doing this is even though he doesn t have any symptoms, he s got a good chance of dropping dead over the next year. he s got some blockage right in this vessel, and that s actually