IN PART ONE OF A TWO NIGHT "NY MED" FINALE EVENT, A TOP SURGEON OPERATES ON A NEWBORN WITH A HEART THE SIZE OF A GRAPE

Plus: Dr. Oz Returns to Fix a Woman's Heart Valve and Give Her Husband Hope

And: A Patient in the ER Takes an Unusual Approach with His Doctor

For a full year ABC News cameras had unprecedented access to document the mayhem and the miracles that occur daily inside the walls of Columbia and Weill Cornell Medical Centers -- the crown jewels of the prestigious New York-Presbyterian Hospital in New York City -- for the eight-part series "NY Med." Lutheran Medical Center also participated, adding a Brooklyn dimension to the series. In "Episode 107" - the part one of a two-night "NY Med" finale event - airing TUESDAY, AUGUST 21 (10:00-11:00 p.m., ET), viewers will meet the following patients, doctors and nurses:

Dr. Mehmet Oz performs a heart valve replacement on an elderly woman whose husband is desperately afraid of losing her. Along the way, his charm keeps the woman's family at ease. Dr. Oz also has more of his amusing encounters with patients and staff wandering the floors of Columbia, castigating colleagues for their suicidal eating habits and getting an elderly patient to get up out of her wheelchair and dance with him.

Jill Schmidt is expecting her second child, but this baby has such serious heart abnormalities that it seems only a miracle worker could hope to save it. Enter Emile Bacha, a Lebanese-born pediatric heart surgeon. First, Jill must deliver the baby successfully, and then Bacha will try to reconstruct its heart.

Sebastian Schubl, a Dr. McDreamy-like young trauma surgeon, tries to save the day when a critically injured pedestrian struck by a vehicle is brought to the ER. As a doctor he struggles with the growing realization that he needs to become less emotionally attached to his patients. Not everyone can be saved, not even the Jamaican grandmother who strokes his head and comforts him after he has to break some difficult news to her.

Debbie Yi is a Korean-American ER doctor with a rapid fire, no-nonsense delivery and a mischievous sense of humor. While trying to sew up a patient's injured hand, Debbie is stunned when the man bursts into song, delivering what she calls a "musical serenade."

"NY Med" follows the irascible, compassionate and, at times, cocky attending surgeons who try to change the trajectory of lives by relying on sheer medical brilliance and a healthy dose of old fashioned good luck. The eight-part series takes a candid look at how cutting edge medicine often makes the difference, although even the best surgeons can find themselves flirting with disaster. The raucous ER staff trades jibes with strong-willed New Yorkers in moments that can be poignantly heartbreaking or off-the-hook hilarious. These doctors spend far more time with each other than with their families, developing complicated and intertwined personal relationships.

Terence Wrong is executive producer of "NY Med." Erica Baumgart and Chris Perera are supervising producers. Monica DelaRosa is series producer and Andy Genovese is the broadcast producer. "NY Med" is broadcast in 720 Progressive (720P), ABC's selected HDTV format, with stereo sound.