A heart bypass operation relies on the talents of a surgical team but they can't do it alone - they need the help of a heart-lung bypass machine to keep the patient alive. This machine keeps the chest organs motionless while a continuous supply of oxygen and nutrients is pumped through the circuit. Watch the procedure above and witness the tense moments between life and death.

Animation developed by Visible Productions, Inc.

Want to know how to look marvelous without splurging so much? Dr. Oz invites three beauty experts to share the smartest ways to save money while looking fabulous starting from your hair and makeup tools to the beauty products you use.