scholarly journals 50% duty cycle may be inappropriate to achieve a sufficient chest compression depth when cardiopulmonary resuscitation is performed by female or light rescuers

2015 ◽  
Vol 2 (1) ◽  
pp. 9-15 ◽  
Author(s):  
Chang Jae Lee ◽  
Tae Nyoung Chung ◽  
Jinkun Bae ◽  
Eui Chung Kim ◽  
Sung Wook Choi ◽  
...  
Keyword(s):  
Cardiopulmonary Resuscitation ◽  
Chest Compression ◽  
Duty Cycle ◽  
Compression Depth

scholarly journals Effect of the Use of Metronome Feedback on the Quality of Pediatric Cardiopulmonary Resuscitation

2021 ◽  
Vol 18 (15) ◽  
pp. 8087
Author(s):  
Dongjun Yang ◽  
Wongyu Lee ◽  
Jehyeok Oh
Keyword(s):  
Cardiopulmonary Resuscitation ◽  
Chest Compression ◽  
Healthcare Providers ◽  
Compression Rate ◽  
Audio Feedback ◽  
Simple Method ◽  
Compression Depth ◽  
Pediatric Resuscitation ◽  
Cpr Quality

Although the use of audio feedback with devices such as metronomes during cardiopulmonary resuscitation (CPR) is a simple method for improving CPR quality, its effect on the quality of pediatric CPR has not been adequately evaluated. In this study, 64 healthcare providers performed CPR (with one- and two-handed chest compression (OHCC and THCC, respectively)) on a pediatric resuscitation manikin (Resusci Junior QCPR), with and without audio feedback using a metronome (110 beats/min). CPR was performed on the floor, with a compression-to-ventilation ratio of 30:2. For both OHCC and THCC, the rate of achievement of an adequate compression rate during CPR was significantly higher when performed with metronome feedback than that without metronome feedback (CPR with vs. without feedback: 100.0% (99.0, 100.0) vs. 94.0% (69.0, 99.0), p < 0.001, for OHCC, and 100.0% (98.5, 100.0) vs. 91.0% (34.5, 98.5), p < 0.001, for THCC). However, the rate of achievement of adequate compression depth during the CPR performed was significantly higher without metronome feedback than that with metronome feedback (CPR with vs. without feedback: 95.0% (23.5, 99.5) vs. 98.5% (77.5, 100.0), p = 0.004, for OHCC, and 99.0% (95.5, 100.0) vs. 100.0% (99.0, 100.0), p = 0.003, for THCC). Although metronome feedback during pediatric CPR could increase the rate of achievement of adequate compression rates, it could cause decreased compression depth.

Does the Q-CPR chest compression pad reliably determine compression depth during cardiopulmonary resuscitation?

2012 ◽  
Vol 29 ◽  
pp. 190 ◽  
Author(s):  
P. Schober ◽  
R. Krage ◽  
V. Lagerburg ◽  
D. van Groeningen ◽  
S. A. Loer ◽  
...  
Keyword(s):  
Cardiopulmonary Resuscitation ◽  
Chest Compression ◽  
Compression Depth

scholarly journals Instructions to “push as hard as you can” improve average chest compression depth in dispatcher-assisted cardiopulmonary resuscitation

Resuscitation ◽  
2008 ◽  
Vol 79 (1) ◽  
pp. 97-102 ◽  
Author(s):  
Muzna Mirza ◽  
Todd B. Brown ◽  
Devashish Saini ◽  
Tracy L. Pepper ◽  
Hari Krishna Nandigam ◽  
...  
Keyword(s):  
Cardiopulmonary Resuscitation ◽  
Chest Compression ◽  
Compression Depth

scholarly journals The potential of leg-foot chest compression as an alternative to conventional hands-on compression during cardiopulmonary resuscitation

2018 ◽  
Vol 26 (2) ◽  
pp. 106-110 ◽  
Author(s):  
Yoshiaki Takahashi ◽  
Takeji Saitoh ◽  
Misaki Okada ◽  
Hiroshi Satoh ◽  
Toshiya Akai ◽  
...  
Keyword(s):  
Heart Rate ◽  
Cardiopulmonary Resuscitation ◽  
Chest Compression ◽  
Basic Life Support ◽  
Life Support ◽  
Vital Signs ◽  
Borg Scale ◽  
Compression Depth ◽  
Hands On ◽  
Scale Scores

Background: Conventional hands-on chest compression, in cardiopulmonary resuscitation, is often inadequate, especially when the rescuers are weak or have a small physique. Objectives: This study aimed to investigate the potential of leg-foot chest compression, with and without a footstool, during cardiopulmonary resuscitation. Methods and Results: We prospectively enrolled 21 medical workers competent in basic life support. They performed cardiopulmonary resuscitation on a manikin for 2 min using conventional hands-on compression (HO), leg-foot compression (LF), and leg-foot compression with a footstool (LF + FS). We analyzed the compression depths, changes in the rescuers’ vital signs, and the modified Borg scale scores after the trials. The compression depth did not differ between the cases using HO and LF. In the case of LF + FS, compression depths ⩾5 cm were more frequently observed (median, inter-quartile range: 93%, 81%–100%) than in HO (9%, 0%–57%, p < 0.01) and LF (28%, 11%–47%, p < 0.01). The increase in the heart rate or modified Borg scale scores, after the trials, did not differ between the HO and LF group; however, the values were the lowest in the case of LF + FS (49 ± 18 beats/min and 5 (4–7) in HO, 46 ± 18 and 6 (5–7) in LF, and 32 ± 11 and 2 (1–3) in LF + FS, respectively, p < 0.01). However, the increase in blood pressure, SpO2, and respiratory rate were not different among each group. The increases in the heart rate and modified Borg scale scores negatively were correlated with the rescuers’ body size, in the case of HO and LF, but not LF + FS. Conclusion: LF can be used as an alternative to HO, when adequate HO is difficult. LF + FS could be used when rescuers are weak or have a small physique and when the victims are bigger than the rescuers.

scholarly journals A comparison of the effect of two methods of positioning the hands during basic and advanced cardiovascular life support on the chest compression depth in adults

2019 ◽  
Vol 11 (4) ◽  
pp. 314-317
Author(s):  
Mohammadreza Bastami ◽  
Parand Soliemanifard ◽  
Roholla Hemmati ◽  
Golnaz Forough Ameri ◽  
Mahboobeh Rasouli ◽  
...  
Keyword(s):  
Emergency Medicine ◽  
Nursing Students ◽  
Cardiopulmonary Resuscitation ◽  
Chest Compression ◽  
Life Support ◽  
Dominant Hand ◽  
Compression Depth ◽  
Men And Women ◽  
Significant Difference ◽  
Left And Right

Introduction: There is no agreement on how the hands are positioned in cardiopulmonary resuscitation (CPR). In this study, the effects of two methods of positioning the hands during basic and advanced cardiovascular life support on the chest compression depth are compared.<br /> Methods: In this observational simulation, the samples included 62 nursing students and emergency medicine students trained in CPR. Each student performed two interventions in both basic and advanced situations on manikins and two positions of dominant hand on non-dominant hand, and vice versa, within four weeks. At each compression, the chest compression depth was numerically expressed in centimeter. Each student was assessed individually and without feedback.<br /> Results: The highest mean chest compression depth was related to Basic Cardiovascular Life Support (BCLS) and the position of the dominant hand on non-dominant hand (5.50 ± 0.6) and (P = 0.04). There was no statistically significant difference in the basic and advanced regression variables in men and women except in the case of Advanced Cardiovascular Life Support (ACLS) with dominant hand on non-dominant hand (P = 0.018). There was no significant difference in mean chest compression during basic and advanced cardiovascular life support in left- and right-handed individuals (P = 0.09). <br /> Conclusion: When the dominant hand is on the non-dominant hand, more pressure with greater depth is applied.

scholarly journals Consistency and variability in human performance during simulate infant CPR: a reliability study

2020 ◽  
Vol 28 (1) ◽  
Author(s):  
Debora Almeida ◽  
Carol Clark ◽  
Michael Jones ◽  
Phillip McConnell ◽  
Jonathan Williams
Keyword(s):  
Chest Compression ◽  
Duty Cycle ◽  
Repeated Measures ◽  
Human Performance ◽  
Life Support ◽  
Intraclass Correlation ◽  
Minimal Detectable Change ◽  
Compression Rate ◽  
Quality Indices ◽  
Compression Depth

Abstract Background Positive outcomes from infant cardiac arrest depend on the effective delivery of resuscitation techniques, including good quality infant cardiopulmonary resuscitation (iCPR) However, it has been established that iCPR skills decay within weeks or months after training. It is not known if the change in performance should be considered true change or inconsistent performance. The aim of this study was to investigate consistency and variability in human performance during iCPR. Methods An experimental, prospective, observational study conducted within a university setting with 27 healthcare students (mean (SD) age 32.6 (11.6) years, 74.1% female). On completion of paediatric basic life support (BLS) training, participants performed three trials of 2-min iCPR on a modified infant manikin on two occasions (immediately after training and after 1 week), where performance data were captured. Main outcome measures were within-day and between-day repeated measures reliability estimates, determined using Intraclass Correlation Coefficients (ICCs), Standard Error of Measurement (SEM) and Minimal Detectable Change (MDC95%) for chest compression rate, chest compression depth, residual leaning and duty cycle along with the conversion of these into quality indices according to international guidelines. Results A high degree of reliability was found for within-day and between-day for each variable with good to excellent ICCs and narrow confidence intervals. SEM values were low, demonstrating excellent consistency in repeated performance. Within-day MDC values were low for chest compression depth and chest compression rate (6 and 9%) and higher for duty cycle (15%) and residual leaning (22%). Between-day MDC values were low for chest compression depth and chest compression rate (3 and 7%) and higher for duty cycle (21%) and residual leaning (22%). Reliability reduced when metrics were transformed in quality indices. Conclusion iCPR skills are highly repeatable and consistent, demonstrating that changes in performance after training can be considered skill decay. However, when the metrics are transformed in quality indices, large changes are required to be confident of real change.

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