Golden Hr and the Platinum 10

The Golden Hour and the Platinum Ten: Where Did These Numbers Come From?

Two numbers have been drilled into every trauma provider in this country. Sixty minutes to definitive care. Ten minutes on scene.

You’ve heard them in class. You’ve probably taught them, I have. The lesson underneath is solid; trauma is time sensitive and screwing around costs lives.

But here’s what doesn’t get said out loud: neither number came from research proving that 60 minutes or 10 minutes was the cutoff. The Golden Hour grew out of Cowley’s vision for rapid trauma care, while the Platinum Ten became a benchmark for getting critically injured patients off the scene quickly. Somewhere along the way they stopped being teaching tools and started working their way into doctrine.

That matters, because if you teach a student a number, the student is going to chase the number. Teach him why the number exists, and he’ll make a good call on the day the number doesn’t fit.

Who Was Cowley?

R Adams Cowley was a thoracic and cardiovascular surgeon at the University of Maryland. Army-trained, politically sharp, and stubborn about a problem most of medicine had pushed aside…patients who survived the injury and then died of shock anyway.

He called shock a momentary pause in the act of death, a window if you wish.  He believed that you could interrupt that pause or close the window if you moved fast enough.

In 1959 the Army handed him $100,000 to study shock in actual patients. What it bought wasn’t much to look at: one room, no operating suite, a supply closet, and two beds. That was the first clinical “Shock trauma unit” in the United States. Up and running by 1960, later stretched to a whopping four beds.

Patients came in on referrals from other doctors, and most of them came in dying. Around the hospital, people called it the death lab.

Cowley and his crew saved enough patients to put an end to the “Death Lab” title. Those four beds turned into a 32-bed trauma center, Maryland had its first statewide EMS system and the Shock Trauma Center carries his name today. R Adams Cowley Shock Trauma Center, part of the University of Maryland Medical Center.

A father of modern trauma medicine. Hard to argue with that.

So Where Did Sixty Minutes Come From?

Here’s the part that conveniently gets left off the slide deck.

The sixty-minute Golden Hour didn’t come from research identifying 60 minutes as a cutoff. It was Cowley’s conviction, stated publicly and in his writings: critically injured patients needed definitive care rapidly, and he placed that critical period within the first hour.

Now look at what else Cowley was doing during that period.

He was building and promoting an entirely new trauma system, and helicopters were a major part of it.

Beginning in the late 1960s, Cowley worked with Maryland officials and the Maryland State Police to develop helicopter transport capable of moving critically injured patients directly to specialized trauma care. The first Maryland State Police civilian medevac mission occurred in March 1970. His 1973 paper in the Journal of Trauma described the economics and performance of Maryland’s helicopter program.

Later historical accounts have suggested that the Golden Hour also helped Cowley build support for the trauma center and helicopter system. What we can’t establish is that he chose sixty minutes because it fit the helicopter program.

That’s not a knock on the dude.

Cowley was right about the thing that actually mattered: speed plus organized trauma care saves people. The system he helped build fundamentally changed trauma care in Maryland and helped shape the modern trauma system.

But sixty minutes was a concept, not a measured physiologic threshold.

And that’s when I started questioning the number.

So, I Started Looking.

This is where I went down the rabbit hole.

If sixty minutes has been repeated in trauma care for decades, I wanted to know what evidence actually established it. Not whether time matters in trauma. We already know it does. I wanted to know something much more specific:

Why sixty minutes?

In the early 1970s, Cowley promotes the Golden Hour concept. No objective data established sixty minutes as a physiologic threshold, but the trauma system he was building was absolutely worth building. The concept caught on. It’s short, memorable, and easy to understand.

Then in 2001, somebody finally went looking for the evidence behind the number.

E. Brooke Lerner, an EMS researcher at SUNY Buffalo, and Ronald Moscati, an emergency physician, conducted a detailed search of the medical literature and historical record looking for objective evidence supporting the Golden Hour.

They couldn’t find it.

They titled their paper The Golden Hour: Scientific Fact or Medical “Urban Legend”?

Their conclusion wasn’t that time doesn’t matter in trauma. We know that’s important. They found no objective evidence supporting the Golden Hour as a defined sixty-minute threshold.

That answered part of my question.

Then another rabbit hole appeared.

What happens when you stop looking at the history of the number and actually compare EMS time against patient survival?

This is where it gets a little juicy.

2010: Now There Was Data to Test It

In 2010, Craig Newgard and his colleagues took the question further. Newgard is an emergency physician and researcher at Oregon Health & Science University, working through its Center for Policy and Research in Emergency Medicine. EMS, trauma systems, and outcomes research are his field.

Using data from the Resuscitation Outcomes Consortium, Newgard and his co-authors looked at 3,656 seriously injured patients with abnormal field physiology, transported by 146 EMS agencies to 51 Level I and II trauma centers across North America.

Then they asked a pretty straightforward question: Did EMS time predict who died?

They looked at activation time, response time, scene time, transport time, and total EMS time. In this group of patients, none of those time intervals showed a significant association with mortality. That’s a pretty bold statement there Cotton…when you’ve spent your career hearing about the Golden Hour. And no, the study doesn’t say time is irrelevant. Newgard and his colleagues never claimed that. Their study got to the answer I was looking for: in this population of seriously injured patients, they couldn’t demonstrate that EMS time intervals predicted mortality.

That lines up with what I’ve seen working in EMS. Some patients don’t have anything close to an hour. An uncontrolled junctional bleed, an airway you can’t maintain, a tension pneumothorax, those patients are working on a much shorter clock.

Other patients can look terrible and remain compensated considerably longer.

That’s where the sixty-minute rule itch starts.

The patient doesn’t know they’re at minute 42. Their physiology doesn’t suddenly change because the clock hits 60.

The injury sets the clock. The number on the wall doesn’t.

A few years later, trauma surgeon Frederick Rogers and his colleagues took another look at the Golden Hour. Their 2015 review reached much the same place: the idea that trauma patients universally need definitive care within sixty minutes rests on a much weaker scientific foundation than the confidence with which we’ve repeated it. They also raised the same question about its prehospital companion, the Platinum Ten Minutes.

And that brings me to the other number.

The Platinum Ten Has the Same Problem

The Platinum Ten Minutes came into trauma education through PHTLS as a scene-time benchmark for critical patients: find the life threats, fix what has to get fixed right there, and go.

As a concept, sure, that’s cool. There is real evidence that shorter scene times matter for certain patients, especially penetrating trauma and serious hemorrhage. The trouble starts when ten minutes becomes the goal instead of the reminder.

Run an active violence incident through it. Shots fired, cops moving to the threat, casualties down somewhere nobody can get to yet. Ten minutes go by while the threat gets located and contained. Then fifteen. Maybe twenty minutes before RTF gets hands on anybody.

So when did their Platinum Ten start? At the moment they got shot? When the first car rolled up? When RTF made entry? When somebody finally got a tourniquet on?

Their physiology never waited for anybody to start a clock. They started bleeding when they got hit and kept bleeding no matter what the response was doing. That ten-minute benchmark is describing a scene that doesn’t exist on that call.

Rural trauma breaks it the same way. Twenty minutes for the closest unit to get there. Fifteen more to cut somebody out. Time to the HLZ, then a thirty-minute flight to a Level I. That patient blows past sixty minutes before anybody does a single thing wrong.

Did the system fail?

Not if the bleeding got found and stopped, the life threats got managed, nobody wasted time on things that didn’t matter, extrication moved as fast as that wreck allowed, and the patient went to the right place the first time.

Whether he rolled through the doors at 58 minutes or 68 tells you almost nothing. Those other questions tell you everything.

The FTS Take: Threat, Environment, Time

At Freedom Training Solutions, we run these calls through three questions instead of a stopwatch.

Threat. What can kill the patient, you, or somebody else right now? Sometimes that’s the bleeding. Sometimes it’s the shooter, the fire, the car that isn’t stable, or the lane of traffic you’re kneeling in. Answer that one first, because it decides whether treatment is even possible where you’re standing.

Environment. What does this spot actually let you do? A trauma bay, a ditch, an upside-down car, a warm zone hallway, and the back forty are not the same place. Same injury, different answer, depending on where he’s lying and what you brought with you.

Time. What has to happen now, what can wait, when does help show up, when can you actually move him, and how long until additional resources or definitive care are available?

Then the one that matters most: is what I’m doing right now worth the time it’s costing?

That question works at minute three and it works at minute forty. A stopwatch only works if somebody started it while you were watching.

Keep the Lesson, Lose the Deadline

Cowley’s number did real work. It pushed this whole profession toward faster transport, better triage, and the expectation that a critical trauma patient would move toward surgery instead of sitting there waiting for it. That lesson stays.

What shouldn’t stay is treating a benchmark like a law of physiology. Different injuries, different patients, different environments, different circumstances. They all come with different time requirements. Pretending otherwise trains people to hit a number instead of reading a patient.

Trauma is time sensitive. It’s not stopwatch dependent.

The question isn’t whether you made the Golden Hour.

It’s whether you made the best use of the time you had.

Anthony G. Forton, NRP, TP-C

Freedom Training Solutions

References

Lerner EB, Moscati RM. The Golden Hour: Scientific Fact or Medical “Urban Legend”? Academic Emergency Medicine. 2001;8(7):758-760.

Newgard CD, Schmicker RH, Hedges JR, et al. Emergency Medical Services Intervals and Survival in Trauma: Assessment of the “Golden Hour” in a North American Prospective Cohort. Annals of Emergency Medicine. 2010;55(3):235-246.

Cowley RA, Hudson F, Scanlan E, et al. An Economical and Proved Helicopter Program for Transporting the Emergency Critically Ill and Injured Patient in Maryland. Journal of Trauma. 1973;13(12):1029-1038.

Clark DE. R A Cowley, the “Golden Hour,” the “Momentary Pause,” and the “Third Space.” The American Surgeon. 2017;83(12):1401-1406.

Rogers FB, Rittenhouse KJ, Gross BW. The Golden Hour in Trauma: Dogma or Medical Folklore? Injury. 2015;46(4):525-527. doi:10.1016/j.injury.2014.08.043.

Harmsen AMK, Giannakopoulos GF, Moerbeek PR, Jansma EP, Bonjer HJ, Bloemers FW. The influence of prehospital time on trauma patients outcome: a systematic review. Injury. 2015;46(4):602-609.

McCoy CE, Menchine M, Sampson S, Anderson C, Kahn C. Emergency Medical Services Out-of-Hospital Scene and Transport Times and Their Association With Mortality in Trauma Patients Presenting to an Urban Level I Trauma Center. Annals of Emergency Medicine. 2013;61(2):167-174. doi:10.1016/j.annemergmed.2012.08.026.

University of Maryland Medical Center. History of the Shock Trauma Center.

National Association of Emergency Medical Technicians. PHTLS: Prehospital Trauma Life Support, 10th Edition. Jones & Bartlett Learning.