ABC versus CAB for cardiopulmonary resuscitation: a prospective, randomized simulator-based trial

Marsch, Stephan; Tschan, Franziska; Semmer, Norbert K.; Zobrist, Roger; Hunziker, Patrick R.; Hunziker, Sabina (2013). ABC versus CAB for cardiopulmonary resuscitation: a prospective, randomized simulator-based trial. Swiss medical weekly, 143, w13856. EMH Schweizerischer Ärzteverlag 10.4414/smw.2013.13856

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QUESTIONS UNDER STUDY: After years of advocating
ABC (Airway-Breathing-Circulation), current guidelines
of cardiopulmonary resuscitation (CPR) recommend CAB
(Circulation-Airway-Breathing). This trial compared ABC
with CAB as initial approach to CPR from the arrival of
rescuers until the completion of the first resuscitation cycle.
METHODS: 108 teams, consisting of two physicians each,
were randomized to receive a graphical display of either the
ABC algorithm or the CAB algorithm. Subsequently teams
had to treat a simulated cardiac arrest. Data analysis was
performed using video recordings obtained during simulations.
The primary endpoint was the time to completion
of the first resuscitation cycle of 30 compressions and two
ventilations.
RESULTS: The time to execution of the first resuscitation
measure was 32 ± 12 seconds in ABC teams and 25 ±
10 seconds in CAB teams (P = 0.002). 18/53 ABC teams
(34%) and none of the 55 CAB teams (P = 0.006) applied
more than the recommended two initial rescue breaths
which caused a longer duration of the first cycle of 30
compressions and two ventilations in ABC teams (31 ± 13
vs.23 ± 6 sec; P = 0.001). Overall, the time to completion
of the first resuscitation cycle was longer in ABC teams (63
± 17 vs. 48 ± 10 sec; P <0.0001).CONCLUSIONS: This randomized controlled trial found
CAB superior to ABC with an earlier start of CPR and a
shorter time to completion of the first 30:2 resuscitation
cycle. These findings endorse the change from ABC to
CAB in international resuscitation guidelines.

Item Type:

Journal Article (Original Article)

Division/Institute:

07 Faculty of Human Sciences > Institute of Psychology > Work and Organisational Psychology

UniBE Contributor:

Semmer, Norbert

Subjects:

100 Philosophy > 150 Psychology
300 Social sciences, sociology & anthropology

ISSN:

1424-7860

Publisher:

EMH Schweizerischer Ärzteverlag

Language:

English

Submitter:

Diana Cristina Romano

Date Deposited:

02 May 2014 17:14

Last Modified:

10 Mar 2021 04:53

Publisher DOI:

10.4414/smw.2013.13856

BORIS DOI:

10.7892/boris.48330

URI:

https://boris.unibe.ch/id/eprint/48330

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