Mar 31, 2005

Differences in time to defibrillation and intubation between two different ventilation/compression ratios in simulated cardiac arrest

Clemens KillHinnerk Wulf


During basic life support (BLS) by a two-rescuer-team early defibrillation and ALS procedures should be performed without interruptions of the BLS-ventilation/compression sequence. The objective of this study was to determine the impact of a ventilation/compression ratio of 5:50 versus 2:15 on the time intervals "Start BLS to first shock" and "Start BLS to intubation". Using a random cross over design 40 experienced paramedics performed a standard BLS/ALS-algorithm according to ILCOR guidelines in a manikin model with ventricular fibrillation (resusci skillreporter anne, Laerdal, Norway) performing both the 2:15 and the 5:50 ventilation/compression ratio. BLS was started with bag/valve/mask ventilation, a semi-automatic defibrillator (corpuls 08/16S) was connected with the manikin, ECG-analysis and three shocks were performed and the tracheal intubation was prepared. Ventilation/compression sequence was only interrupted during ECG-analysis and defibrillation. Expiratory volumes and number of compressions were measured. Variables were compared using paired Students t-test. In addition paramedics were interviewed about work-flow and emotional stress during the tests. The time interval "Start BLS to first shock" was 78 s (2:15-gro...Continue Reading

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Mentioned in this Paper

Ventricular Fibrillation
Expiratory Airflow
Likert Scale
Expiration, Function
Population Program Specialists
Basic Cardiac Life Support
Cross-Over Studies

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