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I agree that it's unacceptable to stop CPR to place an ET tube on a cardiac arrest, outside of a few select situations, e.g. copious amounts of blood in the airway, inability to ventilate by other means. I do think that it's possible to intubate (+/- a bougie) a lot of people without stopping compressions, and have done this on the last few arrests I've worked. At the same time, I think there's no shame in throwing in a King, either as a primary airway, or after taking a look and realising that this is not the airway that's going to be captured easily during CPR. Anecdotally, I like having a good capnograph, and have had some problems with getting consistent readings on a King. In terms of a comparison between supraglottic airways and ET tubes, I think you're got a couple of issues: 1. A supraglottic airway can fail due to glottic edema, e.g. anaphylaxis, caustic ingestion injury, inhalation burn, angioedema 2. The cuff on most supraglottic airways typically fails at fairly low pressures versus an ETT. So this might not be the best airway to use on someone who requires high peak pressures to ventilate. 3. Not everyone is going to be easy to ventilate using a supraglottic airway. Granted, these will work for the vast majority patients. I'm looking forward to seeing some data published from studies comparing primary ETI versus primary SGA versus primary BVM. This should resolve some of the issues over which approach is best.