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Combitube: a study for proper use.
R M Urtubia1, C M Aguila, M A Cumsille
1Intensive Care and Anesthesia Unit, Mutual de Seguridad Hospital C. CH.C., Santiago, Chile.
Anesthesia and Analgesia
|March 29, 2000
Summary
The esophageal-tracheal Combitube (ETC) is effective for patients taller than 152 cm, extending its use to 185 cm. Direct tracheal intubation and adequate airway protection were confirmed in this study.
Area of Science:
- Emergency Medicine
- Anesthesiology
- Airway Management
Background:
- The esophageal-tracheal Combitube (ETC) is designed for difficult airways.
- Manufacturer guidelines recommend the ETC 37F SA for patients 122-152 cm in height.
- The study aimed to assess ETC efficacy in taller patients.
Purpose of the Study:
- Evaluate ventilation effectiveness and reliability of the ETC 37F SA in patients >152 cm.
- Assess airway protection adequacy with the ETC in esophageal position.
- Determine feasibility of direct tracheal intubation with the ETC in situ.
Main Methods:
- 25 adult patients (150-180 cm height) were studied.
- ETC 37F SA was inserted into the esophagus under direct vision.
- Ventilation, laryngoscopic view, and methylene blue presence were assessed.
Main Results:
- Effective and reliable ventilation was achieved in all patients.
- A direct relationship was found between pharyngeal balloon volume and patient height (P < 0.05).
- Adequate glottic view for direct tracheal intubation was observed; no methylene blue was detected in the hypopharynx.
Conclusions:
- The ETC Model 37F SA is suitable for patients 122-185 cm in height.
- Direct tracheal intubation is feasible with the ETC in the esophageal position in normal airways.
- The device provides adequate airway protection.