It's safe to say the Buffalo Bills medical staff saved Damar Hamlin's life Monday.

Less than 72 hours after Hamlin went into cardiac arrest during "Monday Night Football," the Bills safety has shown vast improvement, including responding to doctors' commands and even communicating with them through writing.

None of that would have been possible had it not been for the "textbook execution" by the Bills medical staff, according to officials from University of Cincinnati Medical Center.

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Damar Hamlin of the Buffalo Bills reacts after a missed Pittsburgh Steelers field goal during the second quarter at Highmark Stadium Oct. 9, 2022, in Orchard Park, N.Y. (Timothy T Ludwig/Getty Images)

"It just speaks really to the immediate recognition that there was something significantly and seriously wrong by the Bills medical staff. We cannot credit their team enough," University of Cincinnati Health physician Dr. William Knight told reporters Thursday afternoon. 

"Unfortunately, there are injuries occasionally that happen on sports fields, be it football or others, but it is incredibly rare to have something be this serious that happens like that. And to be that quickly recognized, what they did was immediately marshaled the emergency action plan."

"The Bills training staff who was with him immediately recognized that this was not a run-of-the-mill injury, and they had a significant event on their hands and immediately responded …," said Dr. Timothy Pritts. "It went as well as something like this can go under very challenging circumstances, and they did a fantastic job, which is why we're here today."

Buffalo Bills safety Damar Hamlin warms up prior to a game against the Cincinnati Bengals Jan. 2, 2023, at Paycor Stadium in Cincinnati. (Ian Johnson/Icon Sportswire via Getty Images)

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Pritts added it was "fair to say" that results could have been much different if the response was delayed even just a few extra seconds.

"It was promptly recognized by the Buffalo Bills medical staff, and that allowed for very immediate resuscitation on the field," Knight added.

According to Sports Illustrated, Bills assistant athletic trainer Denny Kellington administered CPR that was "absolutely vital" to saving Hamlin’s life after he collapsed on the field from cardiac arrest following a tackle early in the first quarter of Monday night’s game. 

Fans gather outside UC Medical Center for Damar Hamlin in Cincinnati Jan. 3, 2022. (Kyle Mazza/Anadolu Agency via Getty Images)

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Hamlin underwent CPR less than a minute after collapsing, and Bills staff performed resuscitation for nine minutes and used defibrillation.

The Bills also provided an update Thursday, saying Hamlin has shown "remarkable improvement" and appears to be "neurologically intact."  

WHD News' Paulina Dedaj contributed to this report.