The blog, Seyisanchez, claims that:
According to the latest available statistics, nearly twice as many patients are resuscitated [at Stony Brook University Hospital in New York] every year compared to other U.S. hospitals — the average resuscitation rate at Stony Brook is an astounding 33 percent, which contrasts sharply with the 18 percent average elsewhere. So how does it all work? The techniques [Dr. Sam Parnia] advocates are not cryogenics – freezing the body immediately after death – but cooling it down to best preserve brain cells while keeping up the level of oxygen in the blood. This buys time to fix the underlying problem and restart the heart, he claims.
Also, from here, the Dr. Parnia restates his claim (along with more detailed explanation of the cooling process):
With today's medicine, we can bring people back to life up to one, maybe two hours, sometimes even longer, after their heart stopped beating and they have thus died by circulatory failure.
Is this true?