JOURNAL ARTICLE
RANDOMIZED CONTROLLED TRIAL

["Laryngeal Tube-D" (LT-D) and "Laryngeal Mask" (LMA)]

C H R Wiese, J Bahr, B M Graf
Deutsche Medizinische Wochenschrift 2009, 134 (3): 69-74
19085741

BACKGROUND AND OBJECTIVES: In 2005 the European Resuscitation Council (ERC) published a revised version of the guidelines for Advanced Life Support (ALS). One of the aims was to reduce the time without chest compression in the first period of cardiac arrest. We evaluated in a manikin study whether using the single use laryngeal tube (LT-D) instead of single use laryngeal mask (LMA) for emergency airway management could reduce the "No Flow Time" (NFT). The NFT is defined as the time during which no chest compressions take place.

METHODS: Randomised prospective study with 200 volunteers who performed a standardised simulated cardiac arrest management in a manikin following one-day cardiac arrest training (simulation scenario 430 s). Two supraglottic airway devices were compared (LT-D and LMA). Endpoints were the total "no flow time" during the scenario, and the successful airway management with the used airway device.

RESULTS: In the present manikin study the use of the LT-D significantly reduced NFT compared with the LMA (104.2 s vs. 124.0 s; p < 0.01). The LT-D was correctly positioned by 98 % of the participants on the first attempt compared to 74 % with the LMA. The LT-D was inserted significantly faster than the LMA (12.4 s vs. 29.1 s, p < 0.01). During the cardiac arrest simulation establishing and performing first ventilation took an average of 40.5 s with the LT-D compared to 47.9 s with LMA.

CONCLUSIONS: In this manikin study data showed that the LT-D may be a good alternative airway device compared to LMA for providing and maintaining a patent airway during resuscitation.

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