Comparison of different chest compression positions for use while wearing CBRN-PPE: a randomized crossover simulation trial
Abstract
Background: The prevailing COVID-19 pandemic forces paramedics to take medical rescue operations using personal protective equipment (PPE) for aerosol-generating procedures (AGP). The use of PPE-AGP may reduce the effectiveness of the procedures performed, including airway management, intravascular access, or chest compression. The goal of the current study was to compare the quality by which a chest compression during simulated COVID-19 resuscitation while wearing PPE-AGP. A secondary goal was to assess provider preferences with standard versus OHD chest compression methods while wearing PPE-AGP.
Methods: This is a randomized cross-over single-blinded study involving 37 paramedics performing 2-min continuous chest compression using two methods: the standard chest compression (CC) method during which the rescuer takes a position to the side of the victim (STD) and over-the-head position (OHD). During cardiopulmonary resuscitation, study participants wore Class C PPE-AGP. Both the order of study participants and compression methods were random. The results were blinded before statistical analysis. The compression rate per minute (CPM), CC depth as well as full chest recoil were measured. The analysis was undertaken using STATISTICA (V13.3EN).
Results : Mean chest compression depth using distinct CC methods varied and amounted to 42 ± 2mm for STD vs. 46 ± 4mm for OHD (p < 0.001). Chest compressions based on the OHD method were associated with a lower frequency of chest compressions (107 ± 7CPM) compared with STD (114.5 ± 8; p< 0.001). A higher percentage of full chest recoil was observed in the case of STD (42 ± 6%) than in the case of OHD (34 ± 10%).
Conclusions: Based on the current simulation trial, it is impossible to clearly determine which method (STD vs. OHD) is more effective in resuscitation with PPE-AGP. Paramedics wearing PPE-AGP achieved better chest compression depth for OHD compared to the STD, however, OHD resuscitation causes a lower degree of full chest relaxation. A further well-designed clinical study looking at efficacy, safety, and outcomes is needed to confirm current results.
Keywords: chest compressioncardiopulmonary resuscitationqualitypositionpersonal protective equipmentCBRNCOVID-19SARS-CoV-2pandemicmedical simulationmanikin
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