Melker vs. Scalpel-Bougie-Tube: The Fastest Cricothyrotomy Only Helps If You Start It
Melker vs. Scalpel-Bougie-Tube: The Fastest Cricothyrotomy Only Helps If You Start It
It’s anesthesia’s worst nightmare. You can’t intubate. You can’t ventilate. The sat is dropping, and the next step is the one most of us have spent our careers hoping to avoid, which is going through the front of the neck.
In This Guide
Now picture the two things you could reach for. One is a needle, the tool you’ve held every working day. The other is a scalpel.
In 2018, 28 anesthetists in Singapore tried it both ways on pig tracheas. The scalpel technique had a cuffed airway in place in a median of 45 seconds. The needle-first Melker technique took 101.
Then the researchers asked each of them which technique they would choose first. Ten of the 28 still said the needle.
That gap between what’s faster and what people reach for raises a question worth talking about.
Is the best cricothyrotomy technique the one that’s fastest once you start, or the one you’ll actually start without hesitating?
I filmed both techniques in the lab so you can watch them back to back. The videos are below, along with what the guidelines and the data say about each one.
Same Emergency, Two Names
Most of us learned it as can’t intubate, can’t ventilate (CICV), and the 2022 American Society of Anesthesiologists (ASA) difficult airway guidelines still word it that way. The Difficult Airway Society (DAS) in the UK calls it can’t intubate, can’t oxygenate (CICO), because oxygenation is what matters in that moment.
Whichever name you use, the situation is the same. Intubation and every way of oxygenating from above have failed, and the patient needs an airway through the front of the neck now.
The two guidelines handle the next step differently. The ASA doesn’t name a single technique. It tells us to identify a preferred invasive approach ahead of time, have it done by someone trained in it whenever possible, get it done as fast as possible and have an alternative if it fails. Surgical cricothyrotomy, with scalpel-bougie-tube as the example, is one of the options it lists.
DAS goes further. Its 2015 guidelines made scalpel-bougie-tube the standard for adults, and the 2025 update kept it.
Why the Scalpel Is the Default
The reasoning is practical. DAS lists the equipment as a scalpel with a number 10 blade, a bougie and a size 6.0 cuffed tube. All of that is standard OR equipment, so nobody has to hunt for a proprietary kit or find out the kit has expired.
That doesn’t mean those items are sitting together and ready in every room. The 2025 DAS guidelines say the equipment for every step of the algorithm, including front-of-neck access, must be immediately available anywhere airway management happens. That’s a good reason to open your difficult airway cart on a quiet day and look.
The technique itself is short. You stabilize the larynx, cut through the cricothyroid membrane, slide a bougie into the trachea alongside the blade and railroad the cuffed tube over it.
What changed in 2025: if you can’t clearly feel the membrane, or you aren’t sure, DAS now recommends starting with a vertical midline skin incision by default and finding the membrane with your fingers. Your facility’s protocol and your own training still decide what you do.
Scalpel-bougie-tube cricothyrotomy on a pig trachea.
Why the Needle Is Tempting
The Melker is a Seldinger technique. A needle goes in first, then a wire, then a dilator and airway catheter together. We place needles and wires every day, so the first move feels familiar in a way a neck incision doesn’t.
Familiar doesn’t mean fast. The Melker has more steps, and each one has to go right while the patient keeps desaturating. If the wire comes out or the dilator creates a false passage, you’re starting over.
There’s a practical problem too. The Melker only works if the kit is in your hands. In many facilities it lives on the difficult airway cart, so if the cart isn’t in the room, someone has to go get it while the sat keeps falling.
Look at the kit itself while you’re at it. Melker sets come in cuffed and uncuffed versions, and you should know which one you have.
Melker (Seldinger) cricothyrotomy on a pig trachea.
45 Seconds vs. 101 Seconds
Back to the Singapore study, because the details matter. The team at Changi General Hospital had each anesthetist perform both techniques on a fresh pig trachea. Their Melker arm was cannula-to-Melker, meaning they punctured the membrane with a 14-gauge IV cannula and then converted to the Melker airway over a wire.
Scalpel-Bougie
Cannula-to-Melker
Chang et al., Korean Journal of Anesthesiology, 2018. Twenty-eight anesthetists, pig tracheas, equipment laid out in advance.
Nobody failed either technique, and the difference in posterior tracheal wall injury was not statistically significant.
The stopwatch isn’t the whole story, though.
The needle got in fast
The needle puncture by itself took a median of about 33 seconds, which is faster than the full scalpel-bougie sequence. A cannula in the trachea is not a cuffed airway, and finishing the Melker conversion added roughly another minute.
The scalpel punished a missed first attempt
Posterior tracheal wall injury showed up in 3 of the 5 people who needed more than one scalpel attempt, compared with 2 of the 23 who got it on the first pass. Those are small numbers, but the authors’ conclusion was that the scalpel technique takes proficiency, and they recommended training every year.
The study couldn’t measure hesitation
The authors raised the concern themselves. Anesthetists are familiar with cannulas, and some may be reluctant to use a scalpel, which could delay the procedure. But the timer started when participants were told to begin, with the equipment already in front of them. Most were consultants, and 82 percent had done the same workshop the year before.
A bench study can tell us how long a technique takes after someone says go. It can’t tell us how long it takes a provider to decide to start, or how long it takes to fetch a kit.
The Two Techniques Side by Side
| Question | Scalpel-Bougie-Tube | Cannula-to-Melker |
|---|---|---|
| First move | Scalpel incision | Needle or cannula puncture |
| Equipment | Number 10 scalpel, bougie and 6.0 cuffed tube | Commercial kit with needle, wire, dilator and airway catheter (cuffed or uncuffed) |
| Where it lives | Standard OR items. Confirm they’re together and within reach. | Wherever your facility stocks the kit, often the difficult airway cart |
| Median time in the 2018 pig trachea study | 45.2 seconds | 101.3 seconds About 33 seconds for the puncture alone |
| First-pass success in that study | 82 percent | 82 percent for the puncture, 86 percent for the Melker conversion |
| Picked as first choice after doing both | 18 of 28 anesthetists | 10 of 28 anesthetists |
| What it has going for it | Fewer steps, a faster cuffed airway and the DAS default | A familiar Seldinger sequence and a needle-first start that some of us find easier to begin |
| What can go wrong | Hesitation to cut, bleeding that hides landmarks, and posterior wall injury after a missed first attempt | More steps, dependence on the kit, a lost wire or a false passage |
Where the Time Actually Goes
A closed claims analysis published in Anesthesiology in 2019 looked at 102 U.S. malpractice claims for difficult intubation from 2000 through 2012. A CICO emergency occurred in 80 of them.
In 31 of those 80, or 39 percent, the surgical airway was delayed. In 20 of the 31, the delay came at least partly from the anesthesiologist being slow to call for a surgical airway. In others, a surgeon wasn’t available or was reluctant.
Closed claims are the cases that ended badly enough to become lawsuits, so they can’t tell us how often this happens or which technique would have changed the outcome. What they show is that much of the lost time comes before anyone touches the neck.
The 2025 DAS guidelines make a similar point. They suggest the technical details of the procedure may matter less than the decision-making around it.
Decide Before the Emergency
DAS is direct about this. Having to choose between options in an emergency hurts performance, so the guidelines recommend repeated training, under stress and time pressure, in a single technique that will work in most situations.
A Melker kit in every room doesn’t solve that. Neither does telling each other to “just use the scalpel” while skipping over the hesitation. The decision has to be made ahead of time. Every anesthesia team should know which technique is the facility’s primary plan, what equipment it takes, where that equipment is and what the backup is if the first technique fails.
- Which front-of-neck technique does this facility expect me to use?
- Is the equipment already in the room, or is it on the difficult airway cart?
- How long would it take the cart to get to this room?
- When did I last do the whole technique myself, from finding landmarks to confirming ventilation?
- If the first technique fails, what is our backup?
What a Pig Trachea Can and Can’t Teach
Practicing on a pig trachea gives you something a video can’t. It turns a list of steps into something your hands have done.
What the lab gives you
- The feel of stabilizing the tissue
- Getting through the membrane
- Passing the bougie or the wire
- The whole sequence, start to finish
What it leaves out
- A short, thick neck
- Bleeding
- Distorted anatomy
- A falling saturation
The Singapore authors listed the same limits for their own study. Practice should make the procedure familiar. It shouldn’t convince any of us that the real one will be easy.
Where I Land
“I have never performed a cricothyrotomy on a patient. Every one I’ve done has been in the lab. In the lab, I was more confident starting with a needle than starting with a scalpel, and the Singapore numbers suggest I’m not alone.”
The evidence still says the scalpel gets a cuffed airway in faster once the procedure starts. Both of those are true. So my plan is to practice the scalpel technique until my discomfort stops costing time, and to know the Melker well enough to use it as a backup where it’s stocked.
Cricothyrotomy is rare, and most of us will never perform one on a patient. That’s the reason watching someone else do it isn’t enough. Open the cart and run the whole sequence with the real equipment before the day you need it.
Practice With Us
Our hands-on difficult airway workshops use pig tracheas so CRNAs can practice emergency front-of-neck access with the equipment in their own hands.
View Upcoming Courses ↗This article is for education. It doesn’t replace your facility’s protocol or hands-on training.
References
- Apfelbaum JL, Hagberg CA, Connis RT, et al. 2022 American Society of Anesthesiologists Practice Guidelines for Management of the Difficult Airway. Anesthesiology. 2022;136(1):31-81.
- Ahmad I, El-Boghdadly K, Iliff H, et al. Difficult Airway Society 2025 guidelines for management of unanticipated difficult tracheal intubation in adults. Br J Anaesth. 2026;136(1):283-307.
- Frerk C, Mitchell VS, McNarry AF, et al. Difficult Airway Society 2015 guidelines for management of unanticipated difficult intubation in adults. Br J Anaesth. 2015;115:827-848.
- Chang SS, Tong QJ, Beh ZY, Quek KH, Ang BH. A bench study comparing between scalpel-bougie technique and cannula-to-Melker technique in emergency cricothyroidotomy in a porcine model. Korean J Anesthesiol. 2018;71(4):289-295.
- Joffe AM, Aziz MF, Posner KL, Duggan LV, Mincer SL, Domino KB. Management of difficult tracheal intubation: a closed claims analysis. Anesthesiology. 2019;131(4):818-829.
