You were referring to chest compressions when you referenced depth and rate were you not?
But while we're on the airway topic, what difference does it have on a person whether they're sitting at the head on the living room floor bagging with an ETT versus sitting at the head in the back of a moving ambulance bagging with an ETT?
Don't get me wrong I'm all for working on scene, and not transporting corpses, just from personal experience don't see much of a difference between CPR stationary or moving down the road with a calm driver (if the situation happens to warrant it).
On-scene, you're on your knees on a stable surface giving Cx compressions. In the ambulance, even with the best driver, you're standing, so you'll need to make postural adjustments as the driver brakes, accelerates, makes turns and such. Each time you need to adjust can take away from the force of the compressions. We know that any interruption in CPR will greatly reduce the CPP.
Good luck maintaining a CPP of at least 15mmHg throughout transport, let alone while moving the pt off-scene and into the ambulance. We all know that CPR while moving the pt out of a home and into the bus is virtually ineffective. There's too many interruptions, such as going up or down stairs, passing compressions to another provider as you go through doors, loading into the ambulance, out of the ambulance, etc. I feel that doing CPR while riding the stretcher is also ineffective. At least that is what the Q-CPR feedback is telling me. I also know that my compressions are nowhere near full strength when the pt is moving on our stretcher, even when riding the rail.
Basically, I feel that if working someone for 15-20 mins onscene doesn't result in ROSC, performing (basically) intermittent CPR going to and from the bus is basically sealing the deal. Even if they had a chance, the low quality CPR during pt movement takes away any chance they once had. You wouldn't stop CPR for 15, 30, even 60 seconds for no reason when first working the pt, so why is it okay to basically do the same thing when moving the pt from the residence to the ambulance? Also, if they do see ROSC during transit, how much worse is their neurological outcome and infarct now when compared to their outcome had you stayed on-scene and seen ROSC? Unless you have a Lucas or Autopulse, I feel that it's inappropriate to move a persistently asystolic pt.
Recent studies advocate quality, uninterrupted CPR. Any pt movement, and CPR while standing in a moving vehicle goes against that standard. Going against that standard is poor pt care.