What biomechanical factors are more important in compression depth for children lifesavers? A randomized crossover study - 28/11/18

Doi : 10.1016/j.ajem.2018.05.003

Martín Otero-Agra ^a,^b,^{^⁎} , Antonio Rodríguez-Núñez ^c,^d,^e, Ezequiel Rey ^a, Cristian Abelairas-Gómez ^c,^e,^f, Iker Besada-Saavedra ^a, Ana Pilar Antón-Ogando ^a, Sergio López-García ^g, José Luis Martín-Conty ^h, Roberto Barcala-Furelos ^a,^c,^e
^a REMOSS Research Group, Faculty of Education and Sport Sciences, University of Vigo, Pontevedra, Spain
^b Nursing University School of Pontevedra, University of Vigo, Pontevedra, Spain
^c CLINURSID Network Research, Department of Psychiatry, Radiology and Public Health, University of Santiago de Compostela, Santiago de Compostela, Spain
^d Paediatric Emergency and Critical Care Division, Clinical University Hospital, University of Santiago de Compostela, Santiago de Compostela, Spain
^e Institute of Research of Santiago (IDIS) and SAMID Network, Spain
^f Faculty of Education Sciences, University of Santiago de Compostela, Santiago de Compostela, Spain
^g Faculty of Education, Pontifical University of Salamanca, Salamanca, Spain
^h Nursing University School of Toledo, University of Castilla la Mancha, Toledo, Spain

^⁎Corresponding author at: Faculty of Education and Sport Sciences, University of Vigo, Campus de A Xunqueira s/n, CP: 36005 Pontevedra, Spain.Faculty of Education and Sport SciencesUniversity of VigoCampus de A Xunqueira s/nPontevedraCP: 36005Spain

Abstract

Objective

To evaluate the biomechanical aspects involved in Cardiopulmonary Resuscitation's compression depth by children.

Methods

A randomized crossover study with 196 children between 9 and 14 years-old was conducted. The children performed four CPR hands-only tests of 1 min in four different heights (floor, 5 cm, 10 cm, and 15 cm). Anthropometric, angulation and quality of CPR variables were registered during the tests.

Results

CPR quality was sub-optimal in all tests. Tests with the simulated victim placed on the floor had the best compression quality. Children that made deeper compressions had significantly higher values in all anthropometric variables. Analysis gives more discriminatory power to the anthropometric variables than angulation variables on compression depth.

Conclusion

Chest compression depth obtained by children depends more on their anthropometric characteristics than on their body position. The approximate age to perform compressions with an acceptable quality is 12 years-old. The use of steps increased arm angle, getting it closer to 90° but did not increase quality CPR when compared with performance on the floor.

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Keywords : Children, Cardiopulmonary Resuscitation, Depth, Biomechanical analysis, Anthropometric, Elevation, Step

Plan

Influence of elevation

Influence of depth and elevation

Evaluation of biomechanical variables on depth

Discussion

Limitations

Conclusions

Conflicts of interest

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Vol 37 - N° 1

P. 100-108 - janvier 2019 Retour au numéro

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What biomechanical factors are more important in compression depth for children lifesavers? A randomized crossover study - 28/11/18

Abstract

Objective

Methods

Results

Conclusion

Plan

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