Quality of chest compressions during 10min of single-rescuer basic life support with different compression: ventilation ratios in a manikin model

Bjørshol, Conrad Arnfinn; Søreide, Eldar; Torsteinbø, Tor Harald; Lexow, Kristian; Nilsen, Odd Bjarte; Sunde, Kjetil

doi:10.1016/j.resuscitation.2007.11.009

Cited by 61 publications

(40 citation statements)

References 32 publications

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“…Several studies of simulated adult and pediatric CPR reported an impact of fatigue on quality of CC; [10][11][12][13]20,21 however, the evidence in newborn infants is limited. 14,15 Peak power output generated during pediatric resuscitation is comparable to power generated during intense exercise (for example, running 9 km h − 1 ).…”

Section: Discussionmentioning

confidence: 99%

Rescuer fatigue during simulated neonatal cardiopulmonary resuscitation

Cheung

O’Reilly

et al. 2014

J Perinatol

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Section: Discussionmentioning

confidence: 99%

Rescuer fatigue during simulated neonatal cardiopulmonary resuscitation

Cheung

O’Reilly

et al. 2014

J Perinatol

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“…Two randomized manikin studies (LOE 5) 213,214 demonstrated that Ͼ5 to 10 minutes of continuous chest compressions by laypeople resulted in significantly less compression depth compared with standard 30:2 CPR, and no difference in compression rate. In one LOE 5 manikin study 217 experienced paramedics demonstrated no decline in chest compression quality below guideline recommendations during 10 minutes of BLS with any of 3 different compression-ventilation ratios (15:2, 30:2, and 50:2).…”

Section: Rescuer Fatiguementioning

confidence: 97%

Part 12: Education, Implementation, and Teams

Mancini¹,

Soar²,

Bhanji³

et al. 2010

Circulation

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“…Subsequent studies comparing the two CVRs gave conflicting results. While participants of one study claimed 30:2 to be more exhausting, other investigators found that the quality of ECC did not decrease with the 30:2 ratio during a 10-minute, single-rescuer scenario [11,12]. …”

Section: Introductionmentioning

confidence: 99%

Impact of physical fitness and biometric data on the quality of external chest compression: a randomised, crossover trial

et al. 2011

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BackgroundDuring circulatory arrest, effective external chest compression (ECC) is a key element for patient survival. In 2005, international emergency medical organisations changed their recommended compression-ventilation ratio (CVR) from 15:2 to 30:2 to acknowledge the vital importance of ECC. We hypothesised that physical fitness, biometric data and gender can influence the quality of ECC. Furthermore, we aimed to determine objective parameters of physical fitness that can reliably predict the quality of ECC.MethodsThe physical fitness of 30 male and 10 female healthcare professionals was assessed by cycling and rowing ergometry (focussing on lower and upper body, respectively). During ergometry, continuous breath-by-breath ergospirometric measurements and heart rate (HR) were recorded. All participants performed two nine-minute sequences of ECC on a manikin using CVRs of 30:2 and 15:2. We measured the compression and decompression depths, compression rates and assessed the participants' perception of exhaustion and comfort. The median body mass index (BMI; male 25.4 kg/m2 and female 20.4 kg/m2) was used as the threshold for subgroup analyses of participants with higher and lower BMI.ResultsHR during rowing ergometry at 75 watts (HR75) correlated best with the quality of ECC (r = -0.57, p < 0.05). Participants with a higher BMI and better physical fitness performed better and showed less fatigue during ECC. These results are valid for the entire cohort, as well as for the gender-based subgroups. The compressions of female participants were too shallow and more rapid (mean compression depth was 32 mm and rate was 117/min with a CVR of 30:2). For participants with a lower BMI and higher HR75, the compression depth decreased over time, beginning after four minutes for the 15:2 CVR and after three minutes for the 30:2 CVR. Although found to be more exhausting, a CVR of 30:2 was rated as being more comfortable.ConclusionThe quality of the ECC and fatigue can both be predicted by BMI and physical fitness. An evaluation focussing on the upper body may be a more valid predictor of ECC quality than cycling based tests. Our data strongly support the recommendation to relieve ECC providers after two minutes.

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Quality of chest compressions during 10min of single-rescuer basic life support with different compression: ventilation ratios in a manikin model

Cited by 61 publications

References 32 publications

Rescuer fatigue during simulated neonatal cardiopulmonary resuscitation

Rescuer fatigue during simulated neonatal cardiopulmonary resuscitation

Part 12: Education, Implementation, and Teams

Impact of physical fitness and biometric data on the quality of external chest compression: a randomised, crossover trial

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