AIM: The quality of cardiopulmonary resuscitation (CPR) is a crucial determinant of outcome following cardiac arrest. Interruptions in chest compressions are detrimental. We aimed to compare the effect of mouth-to-mouth ventilation (MMV), mouth-to-pocket mask ventilation (MPV) and bag-valve-mask ventilation (BMV) on the quality of CPR. MATERIALS AND METHODS:Surf lifeguards in active service were included in the study. Each surf lifeguard was randomized to perform three sessions of single-rescuer CPR using each of the three ventilation techniques (MMV, MPV and BMV) separated by 5 min of rest. Data were obtained from a resuscitation manikin and video recordings. RESULTS:A total of 60 surf lifeguards were included (67% male, 33% female, mean age 25 years). Interruptions in chest compressions were significantly reduced by MMV (8.9 ± 1.6 s) when compared to MPV (10.7 ± 3.0 s, P < 0.001) and BMV (12.5 ± 3.5s, P < 0.001). Significantly more effective ventilations (visible chest rise) were delivered using MMV (91%) when compared to MPV (79%, P < 0.001) and BMV (59%, P < 0.001). The inspiratory time was longer during MMV (0.7 ± 0.2 s) and MPV (0.7 ± 0.2s, P < 0.001 for both) compared to BMV (0.5 ± 0.2s). Tidal volumes were significantly lower using BMV (0.4 ± 0.2L) compared to MMV (0.6 ± 0.2L, P < 0.001) and MPV (0.6 ± 0.3 L, P < 0.001), whereas no differences were observed when comparing MMV and MPV. CONCLUSION:MMV reduces interruptions in chest compressions and produces a higher proportion of effective ventilations during lifeguard CPR. This suggests that CPR quality is improved using MMV compared to MPV and BMV.
RCT Entities:
AIM: The quality of cardiopulmonary resuscitation (CPR) is a crucial determinant of outcome following cardiac arrest. Interruptions in chest compressions are detrimental. We aimed to compare the effect of mouth-to-mouth ventilation (MMV), mouth-to-pocket mask ventilation (MPV) and bag-valve-mask ventilation (BMV) on the quality of CPR. MATERIALS AND METHODS: Surf lifeguards in active service were included in the study. Each surf lifeguard was randomized to perform three sessions of single-rescuer CPR using each of the three ventilation techniques (MMV, MPV and BMV) separated by 5 min of rest. Data were obtained from a resuscitation manikin and video recordings. RESULTS: A total of 60 surf lifeguards were included (67% male, 33% female, mean age 25 years). Interruptions in chest compressions were significantly reduced by MMV (8.9 ± 1.6 s) when compared to MPV (10.7 ± 3.0 s, P < 0.001) and BMV (12.5 ± 3.5s, P < 0.001). Significantly more effective ventilations (visible chest rise) were delivered using MMV (91%) when compared to MPV (79%, P < 0.001) and BMV (59%, P < 0.001). The inspiratory time was longer during MMV (0.7 ± 0.2 s) and MPV (0.7 ± 0.2s, P < 0.001 for both) compared to BMV (0.5 ± 0.2s). Tidal volumes were significantly lower using BMV (0.4 ± 0.2L) compared to MMV (0.6 ± 0.2L, P < 0.001) and MPV (0.6 ± 0.3 L, P < 0.001), whereas no differences were observed when comparing MMV and MPV. CONCLUSION: MMV reduces interruptions in chest compressions and produces a higher proportion of effective ventilations during lifeguard CPR. This suggests that CPR quality is improved using MMV compared to MPV and BMV.
Authors: Michael D Clark; Mikaela P Davis; Meredith A Petschauer; Erik E Swartz; Jason P Mihalik Journal: J Athl Train Date: 2018-03-22 Impact factor: 2.860
Authors: Ramón Fungueiriño-Suárez; Roberto Barcala-Furelos; Marta González-Fermoso; Santiago Martínez-Isasi; Felipe Fernández-Méndez; Violeta González-Salvado; Rubén Navarro-Patón; Antonio Rodríguez-Núñez Journal: Biomed Res Int Date: 2018-04-24 Impact factor: 3.411
Authors: Louise Nørkjær; Mathilde Stærk; Kasper G Lauridsen; Tabita K Gallacher; Jakob B Løyche; Kristian Krogh; Bo Løfgren Journal: Open Access Emerg Med Date: 2020-04-02