Laryngeal mask airway: Difference between revisions
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==Background== | |||
*Can use without muscle relaxants | |||
*Better than face mask | |||
*Can be used as bridge to fiberoptic intubation | |||
*Limited by unreliable seal at peak insp pressure | |||
*Aspiration risk | |||
*Mucosal trauma | |||
*LMA better than endotracheal for paramedics, especially in pediatric patients<ref>Zhu X-Y, Lin B-C, Zhang Q-S, Ye H-M, Yu R-J. A prospective evaluation of the efficacy of the laryngeal mask airway during neonatal resuscitation. Resuscitation. 2011;82(11):1405–1409. doi:10.1016/j.resuscitation.2011.06.010</ref><ref>Calkins MD, Robinson TD. Combat trauma airway management: endotracheal intubation versus laryngeal mask airway versus combitube use by Navy SEAL and Reconnaissance combat corpsmen. J Trauma. 1999;46(5):927–932</ref> | |||
*Intubating LMA (LMA-Fastrach) provides the opportunity to convert to a definitive airway after rescue with the supraglottic device | |||
==LMA Sizes== | ==LMA Sizes== | ||
{{LMA sizes}} | {{LMA sizes}} | ||
Revision as of 11:46, 2 February 2019
Background
- Can use without muscle relaxants
- Better than face mask
- Can be used as bridge to fiberoptic intubation
- Limited by unreliable seal at peak insp pressure
- Aspiration risk
- Mucosal trauma
- LMA better than endotracheal for paramedics, especially in pediatric patients[1][2]
- Intubating LMA (LMA-Fastrach) provides the opportunity to convert to a definitive airway after rescue with the supraglottic device
LMA Sizes
| Mask Size | Weight (kg) | Age (yr) | LMA Length (cm) | LMA Cuff Vol (mL) | Largest ETT^ (mm) |
| 1 | <5 | <0.5 | 10 | 4 | 3.5 |
| 1.5 | 5-10 | <1 | 10 | 5-7 | 4 |
| 2 | 6.5-20 | 1-5 | 11.5 | 7-10 | 4.5 |
| 2.5 | 20-30 | 5-10 | 12.5 | 14 | 5 |
| 3 | 30-60 | 10-15 | 19 | 15-20 | 6 |
| 4 | 60-80 | >15 | 19 | 25-30 | 6.5 |
| 5 | >80 | >15 | 19 | 30-40 | 7 |
^Largest ETT that can pass thorough "Intubating LMA" (ILMA)
See Also
References
- ↑ Zhu X-Y, Lin B-C, Zhang Q-S, Ye H-M, Yu R-J. A prospective evaluation of the efficacy of the laryngeal mask airway during neonatal resuscitation. Resuscitation. 2011;82(11):1405–1409. doi:10.1016/j.resuscitation.2011.06.010
- ↑ Calkins MD, Robinson TD. Combat trauma airway management: endotracheal intubation versus laryngeal mask airway versus combitube use by Navy SEAL and Reconnaissance combat corpsmen. J Trauma. 1999;46(5):927–932