It is also a story of Dr. DeBakey himself, a strong-willed pioneer who at one point was willing to die, concedes he was at times in denial about how sick he was and is now plowing into life with as much zest and verve as ever.

But Dr. DeBakey’s rescue almost never happened.

He refused to be admitted to a hospital until late January. As his health deteriorated and he became unresponsive in the hospital in early February, his surgical partner of 40 years, Dr. George P. Noon, decided an operation was the only way to save his life. But the hospital’s anesthesiologists refused to put Dr. DeBakey to sleep because such an operation had never been performed on someone his age and in his condition. Also, they said Dr. DeBakey had signed a directive that forbade surgery.

As the hospital’s ethics committee debated in a late-night emergency meeting on the 12th floor of Methodist Hospital, Dr. DeBakey’s wife, Katrin, barged in to demand that the operation begin immediately.

In the end, the ethics committee approved the operation; an anesthesiology colleague of Dr. DeBakey’s, who now works at a different hospital, agreed to put him to sleep; and the seven-hour operation began shortly before midnight on Feb. 9. “It is a miracle,” Dr. DeBakey said as he sat eating dinner in a Houston restaurant recently. “I really should not be here.”

The costs of Dr. DeBakey’s care easily exceeded $1 million. Methodist Hospital and his doctors say they have not charged Dr. DeBakey. His hospitalizations were under pseudonyms to help protect his privacy, which could make collecting insurance difficult. Methodist Hospital declined to say what the costs were or discuss the case further. Dr. DeBakey says he thinks the hospital should not have been secretive about his illness.

Dr. DeBakey’s doctors acknowledge that he got an unusually high level of care. But they said that they always tried to abide by a family’s wishes and that they would perform the procedure on any patient regardless of age, if the patient’s overall health was otherwise good.

Dr. DeBakey agreed to talk, and permitted his doctors to talk, because of a professional relationship of decades with this reporter, who is also a physician, and because he wanted to set the record straight for the public about what happened and explain how a man nearly 100 years old could survive.