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General product and reference information for lab and clinic staff, not medical advice and not a procedure guide. Clinical use belongs to trained clinicians following local protocols and the manufacturer’s instructions for use.
Short answer
An intubation bougie is a long, slim, flexible introducer used as an aid to tracheal intubation. The same device is sold as an endotracheal tube introducer, and it is easy to confuse with an intubation stylet, which is a rod that sits inside the tube. A 2022 systematic review describes tracheal tube introducers and stylets as “some of the most widely used devices for aiding practitioners in performing endotracheal intubation” (PubMed abstract, checked 2026-10-30).
What is an intubation bougie?
A bougie in this sense is a thin introducer that is placed first and used as a guide for the tracheal tube. Catalogues list it as an endotracheal tube introducer. The Médecins Sans Frontières Unicat supply catalogue, for example, lists “ENDOTRACHEAL TUBE INTRODUCER, sterile, s.u., CH15, 70 cm” under the class “Intubation device guides” (checked 2026-10-30).
The words overlap in everyday use, so it helps to separate them. The stylet is covered in detail in our guide to the stylet for an endotracheal tube; the tube itself is explained in What Is an Endotracheal Tube? and its dimensions in Endotracheal Tube Sizes.
Bougie, tube introducer and stylet: how the terms differ
Endotracheal tube introducer
This is the catalogue name for the bougie. It is a separate device: it is not supplied inside the tube.
Intubation stylet
A stylet is a malleable rod that is pre-loaded inside the tracheal tube to hold its shape. In the United States the stylet has its own FDA product code (“Stylet, Tracheal Tube”, 21 CFR 868.5790, Class I), covered on our stylet guide.
Regulatory lookup for the bougie
A query of the openFDA device classification database for “bougie” on 2026-10-30 returned esophageal, eustachian, urological and gastro-urology bougies, and no airway or intubation entry. openFDA notes that its data are unvalidated, so a missing hit is not a classification; it only means a staff member cannot assume an FDA class lookup will work for this product name.
What the trials found
Each row below is taken from the study’s own PubMed abstract (checked 2026-10-30).
| Source | Setting | Reported result |
|---|---|---|
| BOUGIE trial, Driver et al., JAMA 2021;326(24):2488-2497 | Randomised trial, 1,102 critically ill adults, 7 emergency departments and 8 intensive care units in the US | First-attempt success 80.4% with bougie and 83.0% with stylet (difference -2.6 percentage points, 95% CI -7.3 to 2.2, P = .27); the authors concluded the bougie did not significantly increase first-attempt success. |
| Tollman and Ahmed, Eur J Trauma Emerg Surg 2022;48(3):1723-1735 | Systematic review and meta-analysis, prehospital setting | With video technology, first-pass success favoured bougies (RR 1.15, 95% CI 1.10-1.21); without it, no statistical difference. Stylets led to a shorter time to intubation and bougies were easier to use. |
These studies address different settings, so they should not be read as a single ranking of devices.
Where it matters for labs, clinics and supply decisions
A catalogue entry is the concrete place where these terms meet stock. The Unicat entry above states the following attributes, which is a usable checklist of what a product listing should say:
| Attribute | What the example entry states |
|---|---|
| Product name | Endotracheal tube introducer |
| Sterility | Supplied sterile and “must remain sterile until its use” |
| Use | Single use: intended for one patient during a single procedure, not for reprocessing |
| Size and length | CH15 and 70 cm (other entries list, for example, CH06 and 50 cm) |
| Classification | “Intubation device guides” |
The same entry does not state the introducer’s material or tip shape, so a listing that omits them leaves a gap that only the manufacturer’s instructions for use can fill. For related background on sterile status in purchasing, see sterile vs. non-sterile classifications in purchasing.
Common misunderstandings
- “A bougie is just a stylet.” Not in the catalogue sense: the introducer is a separate device, while the stylet is the rod inside the tube.
- “The trials show the bougie is better.” The BOUGIE trial found no significant difference in first-attempt success; the Tollman meta-analysis found an advantage only where video technology was used.
- “An FDA class lookup will confirm it.” openFDA returned no airway-bougie entry for the term on 2026-10-30.
FAQ
What is an intubation bougie?
A long, thin, flexible introducer used as a guide for tracheal intubation. It is supplied under names such as endotracheal tube introducer and is a different item from the stylet loaded inside the tube.
What is the difference between an endotracheal tube introducer and a bougie?
In supply catalogues they are the same device under two names.
What is the difference between a bougie and an intubation stylet?
The stylet is a rod placed inside the tracheal tube; the bougie is a separate introducer. The BOUGIE randomised trial compared the two and found no significant difference in first-attempt success (80.4% vs 83.0%).
Are intubation bougies single-use?
The catalogue example cited here is sterile and single-use, intended for one patient and one procedure. Other products may differ; the manufacturer’s instructions for use govern.
Sources
- Driver BE, Semler MW, et al. BOUGIE randomized clinical trial, JAMA 2021;326(24):2488-2497, https://pubmed.ncbi.nlm.nih.gov/34879143/ (checked 2026-10-30).
- Tollman J, Ahmed Z. Tracheal tube introducers and stylets in the prehospital setting, Eur J Trauma Emerg Surg 2022, https://pubmed.ncbi.nlm.nih.gov/34333690/ (checked 2026-10-30).
- Médecins Sans Frontières Unicat, Endotracheal tube introducer, sterile, s.u., CH15, 70 cm, https://unicat.msf.org/cat/product/12505 (checked 2026-10-30).
- openFDA device classification API, query “bougie”, https://api.fda.gov/device/classification.json?search=device_name:bougie (checked 2026-10-30).
