Whilst on the operating table the pieces of tape over Clay's eyes change position.
The endotracheal tube (breathing tube) was not secured to the patient. It is standard practice to secure this tube to the patient in order to keep it in place.
The surgeon starts prepping the op site even before the anesthesiologist intubates the patient. Usually you first sedate, then anesthetize & intubate the patient before any preparations starts b/c the sedatives and hypnotics tend to make a person susceptible to hallucinations & bad trips that could be triggered by sensory input (noise, light, the cold from the disinfectant).
Clay's heart shows an asystole on the EKG monitor, yet the surgeon yells "V-Fib" (Ventricular Fibrillation) and calls for the defibrillator, clearly he is not in Ventricular Fibrillation but in asystole, and asystole i.e. non-beating heart, cannot and must not be defibrillated.
The tagline is a gross misrepresentation of statistics. The actual estimate of awareness during anesthesia is 1:14000 for high risk patients to as low as 1:42000.
In the flashback where Clay is initially rushed to the ER, Dr. Harper says 'We have a massive heart attack, possible MI'. MI is an abbreviation for myocardial infarction which is commonly known as a heart attack.