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Airway scope and StyletScope for tracheal intubation in a simulated difficult airway.
Anesth Analg. 2009 Jan; 108(1):273-9.A&A

Abstract

BACKGROUND

Direct laryngoscopy is difficult when the cervical spine is immobilized. The Airway Scope and StyletScope are new laryngoscopes designed to facilitate intubation under these circumstances. Thus, in patients wearing a rigid cervical collar to simulate a difficult airway, we tested the hypothesis that the intubation success rates of the Airway Scope and StyletScope are similar, but that intubation with Airway Scope is faster.

METHODS

Adult patients requiring tracheal intubation as part of anesthesia were enrolled. After anesthesia induction and muscle relaxation, patients' necks were stabilized with a rigid Philadelphia collar and patients were randomly assigned to tracheal intubation with Airway Scope (n = 50) or StyletScope (n = 50). Overall intubation success rate, time required for intubation, the number of attempts required for successful intubation, and airway complications related to intubation were recorded.

RESULTS

Overall intubation success rates were 98% with Airway Scope and 96% with StyletScope. Intubation was 19 s faster with Airway Scope (32[8] s; mean) versus StyletScope (51[29] s). The number of required intubation attempts was similar with each device: 26/18/5 (first/second/third attempt) for Airway Scope versus 26/17/5 for StyletScope. The incidence of mucosal trauma and lip injury was similar, except esophageal intubation occurred only with StyletScope (n = 6); neither dental injury nor hypoxia occurred.

CONCLUSIONS

Both the Airway Scope and StyletScope offer high success rates in a simulated difficult airway achieved by a rigid collar. However, the Airway Scope is faster and less likely to cause esophageal intubation.

Authors+Show Affiliations

Department of Anesthesia, Kosei Hospital, Japan.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Randomized Controlled Trial
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

19095862

Citation

Komatsu, Ryu, et al. "Airway Scope and StyletScope for Tracheal Intubation in a Simulated Difficult Airway." Anesthesia and Analgesia, vol. 108, no. 1, 2009, pp. 273-9.
Komatsu R, Kamata K, Hamada K, et al. Airway scope and StyletScope for tracheal intubation in a simulated difficult airway. Anesth Analg. 2009;108(1):273-9.
Komatsu, R., Kamata, K., Hamada, K., Sessler, D. I., & Ozaki, M. (2009). Airway scope and StyletScope for tracheal intubation in a simulated difficult airway. Anesthesia and Analgesia, 108(1), 273-9. https://doi.org/10.1213/ane.0b013e31818a4398
Komatsu R, et al. Airway Scope and StyletScope for Tracheal Intubation in a Simulated Difficult Airway. Anesth Analg. 2009;108(1):273-9. PubMed PMID: 19095862.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Airway scope and StyletScope for tracheal intubation in a simulated difficult airway. AU - Komatsu,Ryu, AU - Kamata,Kotoe, AU - Hamada,Keiko, AU - Sessler,Daniel I, AU - Ozaki,Makoto, PY - 2008/12/20/entrez PY - 2008/12/20/pubmed PY - 2009/1/22/medline SP - 273 EP - 9 JF - Anesthesia and analgesia JO - Anesth Analg VL - 108 IS - 1 N2 - BACKGROUND: Direct laryngoscopy is difficult when the cervical spine is immobilized. The Airway Scope and StyletScope are new laryngoscopes designed to facilitate intubation under these circumstances. Thus, in patients wearing a rigid cervical collar to simulate a difficult airway, we tested the hypothesis that the intubation success rates of the Airway Scope and StyletScope are similar, but that intubation with Airway Scope is faster. METHODS: Adult patients requiring tracheal intubation as part of anesthesia were enrolled. After anesthesia induction and muscle relaxation, patients' necks were stabilized with a rigid Philadelphia collar and patients were randomly assigned to tracheal intubation with Airway Scope (n = 50) or StyletScope (n = 50). Overall intubation success rate, time required for intubation, the number of attempts required for successful intubation, and airway complications related to intubation were recorded. RESULTS: Overall intubation success rates were 98% with Airway Scope and 96% with StyletScope. Intubation was 19 s faster with Airway Scope (32[8] s; mean) versus StyletScope (51[29] s). The number of required intubation attempts was similar with each device: 26/18/5 (first/second/third attempt) for Airway Scope versus 26/17/5 for StyletScope. The incidence of mucosal trauma and lip injury was similar, except esophageal intubation occurred only with StyletScope (n = 6); neither dental injury nor hypoxia occurred. CONCLUSIONS: Both the Airway Scope and StyletScope offer high success rates in a simulated difficult airway achieved by a rigid collar. However, the Airway Scope is faster and less likely to cause esophageal intubation. SN - 1526-7598 UR - https://www.unboundmedicine.com/medline/citation/19095862/Airway_scope_and_StyletScope_for_tracheal_intubation_in_a_simulated_difficult_airway_ L2 - https://doi.org/10.1213/ane.0b013e31818a4398 DB - PRIME DP - Unbound Medicine ER -