Supraglottic Airways in the Field

Why this matters

A supraglottic airway sits above the vocal cords and can still move air. It is not a fake tube. In many systems it is the first advanced airway, or the rescue airway, and it can get oxygen in faster than repeated failed looks. You still have to size it, seat it, seal it, and confirm it with a continuous waveform.

When an SGA Fits

• Use it in cardiac arrest when your protocol wants a rapid advanced airway. It is an acceptable advanced airway in adult out-of-hospital cardiac arrest. You still confirm it and keep watching the waveform. Arrest is not a reason to skip the waveform.
• Use it as rescue after a failed tube, or when the bag is difficult, if you are authorized. A two-person bag with a two-handed jaw-thrust seal still beats a one-handed E-C clamp when you are bagging.
• Some systems use it as the first airway for certain provider levels. Your protocol decides who places it.
• It is not a reason to skip suction, positioning, or the waveform.

Clinical sequence

1. Size it the way the manufacturer and your training teach, using the weight or height cues you were taught.
2. Set out suction, oxygen, and the waveform adapter before you insert it. Do not place it in a dirty airway with suction still in the pocket.
3. Insert it the way you were trained. Do not invent a new angle under stress.
4. Inflate the cuff if the device is designed for a cuff. Confirm chest rise and a waveform.
5. Secure it well. Check depth and the waveform after every move, including a log roll and packaging. It can come out.

How SGAs Fail

• The device is the wrong size, it sits at the wrong depth, or it leaks. Vomit, cords in spasm, trauma, or the patient’s anatomy can keep it from sealing.
• You feel reassured even though you do not have a continuous waveform.
• You use it when a complete blockage needs a different plan, such as choking care or a surgical airway if you are trained.

In practice

• A supraglottic airway is still an advanced airway. Monitor it with a continuous waveform when you have one.
• Know when your protocol moves you from this device to an endotracheal tube, or to a cannot-intubate, cannot-oxygenate pathway.
• Write down the size, the time, how you confirmed it, and the waveform trend.

Common errors

• Inserting it in a dirty airway with suction not ready.
• Not checking it again after packaging.
• Treating it as if it cannot move once it is in.

Practice

Related: Waveform capnography, Failed oxygenation (DOPE-S).

Sources & Further Study

Named guidelines for further study. They are not clinical orders and do not replace your protocol or medical direction.

• NASEMSO National Model EMS Clinical Guidelines (2022) — U.S. EMS model language; follow your protocol
• AHA 2025 Part 9: Adult Advanced Life Support — an SGA is an acceptable advanced airway in adult arrest; confirm with waveform
• A supraglottic airway is an acceptable advanced airway during adult cardiac arrest. Confirmation with a waveform still applies.
• ILCOR CoSTR (2026) — for trained basic life support EMS, ventilation with an SGA or a bag-mask is a weak suggestion; your protocol decides who places the device
• Your SGA manufacturer training and airway protocol.