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Chest wall mechanics during mechanical chest compression and its relationship to CPR-related injuries and survival.


ABSTRACT:

Aim

To determine compression force variation (CFV) during mechanical cardiopulmonary resuscitation (CPR) and its relationship with CPR-related injuries and survival.

Methods

Adult non-traumatic OHCA patients who had been treated with mechanical CPR were evaluated for CPR-related injuries using chest X-rays, thoracic computed tomography or autopsy. The CFV exerted by the LUCAS 2 device was calculated as the difference between the maximum and the minimum force values and was categorised into three different groups (high positive CFV ≥ 95 newton (N), high negative CFV ≤ -95 N, and low variation for intermediate CFV). The CFV was correlated with the CPR injuries findings and survival data.

Results

Fifty-two patients were included. The median (IQR) age was 57 (49-66) years, and 13 (25%) cases survived until hospital admission. High positive CFV was found in 21 (40.4%) patients, high negative CFV in 9 (17.3%) and a low CFV in 22 (42.3%). The median (IQR) number of rib fractures was higher in the high positive and negative CFV groups compared with the low CFV group [7(1-9) and 9 (4-11) vs 0 (0-6) (p = 0.021)]. More bilateral fracture cases were found in the high positive and negative CFV groups [16 (76.2%) and 6 (66.7%) vs 6 (27.3%) (p = 0.004)]. In the younger half of the sample more patients survived until hospital admission in the low CFV group compared with the high CFV groups [5 (41.7%) vs 1 (7.1%) (p = 0.037)].

Conclusions

High CFV was associated with ribcage injuries. In the younger patients low CFV was associated with survival until hospital admission.

SUBMITTER: Azeli Y 

PROVIDER: S-EPMC9112017 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature

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Publications

Chest wall mechanics during mechanical chest compression and its relationship to CPR-related injuries and survival.

Azeli Youcef Y   Barbería Eneko E   Fernández Alberto A   García-Vilana Silvia S   Bardají Alfredo A   Hardig Bjarne Madsen BM  

Resuscitation plus 20220511


<h4>Aim</h4>To determine compression force variation (CFV) during mechanical cardiopulmonary resuscitation (CPR) and its relationship with CPR-related injuries and survival.<h4>Methods</h4>Adult non-traumatic OHCA patients who had been treated with mechanical CPR were evaluated for CPR-related injuries using chest X-rays, thoracic computed tomography or autopsy. The CFV exerted by the LUCAS 2 device was calculated as the difference between the maximum and the minimum force values and was categor  ...[more]

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