scholarly journals (P2-3) Analysis of Chest Compression Rate and Its Affect on the Quality of Chest Compressions

2011 ◽  
Vol 26 (S1) ◽  
pp. s136-s136
Author(s):  
Z.T. Emberts ◽  
J.H. Schwab ◽  
A.L. Williams ◽  
M.L. Birnbaum ◽  
P.D. Padjen ◽  
...  
Keyword(s):  
Life Support ◽  
Survival Rates ◽  
Heart Association ◽  
Hand Position ◽  
Compression Rate ◽  
Chest Compressions ◽  
Support Providers ◽  
Position Data ◽  
Modern Era

BackgroundIn the last 50 years of modern-era cardiopulmonary resuscitation (CPR), survival rates remain dismal, worldwide. International CPR guidelines recommended a compression rate of at least 100 per minute. There is little evidence documenting if and to what extent high compression rates affect the quality of chest compressions.ObjectivesAn objective of this study was to evaluate the effect mean compression rate (MCR) had on the overall quality of chest compressions. Investigators hypothesized that MCRs > 110 would result in a smaller percentage of adequate: compressions (PAC); depth (PAD); and recoil (PAR).MethodsIn this observational pilot study, basic life support providers were recruited from prehospital and in-hospital settings to provide 10 minutes of continuous chest compressions, based on the 2005 American Heart Association guidelines. An adequate compression was defined as a compression that was > 35 mm, had full recoil, and correct hand position. Data were recorded using the Laerdal PC Skill reporting System.ResultsNinety four (91.3%) of 103 participants completed 10 minutes of compressions. Rescuers represented a variety of backgrounds, average age of 35.5 ± 11.0 years. Fifty eight (56.2%) rescuers had performed CPR in the last two years, and 54 (52.4%) practiced prehospital EMS. Providers that did not complete the entire 10 minutes tended to have a higher MCR than those completing 10 minutes, 114.2 ± 19.3 vs. 105.8 ± 15.4 respectively. Within the first two minutes, rescuers with a MCR > 110 delivered 45% of their compressions adequately, compared to 60% when a rescuer's MCR was < 110. This initial disparity was primarily due to decreased PAR, not decreased PAD. After 2 minutes, higher MCRs correlated with decreased PAC, due to decreased PAD.ConclusionsData indicates a higher MCR results in decreased PAC, PAD, and PAR, likely attributed to increased rescuer fatigue.

scholarly journals (A153) Analysis of Chest Compressions: Measured Using the Quality Compression Index and Performance Disparities among Demographic Characteristics

2011 ◽  
Vol 26 (S1) ◽  
pp. s43-s44
Author(s):  
J.H. Schwab ◽  
A.L. Williams ◽  
M.L. Birnbaum ◽  
Z.T. Emberts ◽  
P.D. Padjen ◽  
...  
Keyword(s):  
Basic Life Support ◽  
Life Support ◽  
Healthcare Providers ◽  
Hand Position ◽  
Compression Index ◽  
Chest Compressions ◽  
Male Sex ◽  
And Performance ◽  
Over Time

IntroductionCardiopulmonary resuscitation (CPR) guidelines throughout the world stress the importance of high quality chest compressions soon after cardiac arrest as the most significant factor in determining survival. Little evidence exists, internationally, documenting the quality of compressions provided by healthcare providers. In this study investigators sought to determine the quality of chest compressions delivered by rescuers. It was hypothesized that greater variably in compression quality exists between rescuers than variability in individual rescuers over time.MethodsIn this observational pilot study, basic life support (BLS) providers from prehospital and in-hospital settings were invited to participate in the investigation. Ten minutes of continuous chest compressions were recorded on the Resusci Anne and the Laerdal PC Skillreporting System. An adequate compression was defined as a compression with depth > 38mm, full chest recoil, and correct hand position. The Quality Compression Index (QCI) was developed to factor rate into the characteristics of an adequate compression. QCI is a scaled performance index calculated every 30 seconds.ResultsProviders came from a variety of clinical backgrounds, aged 35.5 ± 11.0 years. Of the 103 total participants, 94 (91.3%) completed 10 minutes of compressions. The most significant degradation in the quality of compressions occurred within the first two minutes. There was greater variability between different rescuers than the variability over time. Mean Square Error (MSE) due to subjects was comparatively greater than the MSE due to time (63.2 vs. 7.68). Performance of CPR, male sex, < 45 years of age, and prehospital background, correlated with higher quality. Time since last BLS certification and the number of times a rescuer completed a BLS class did not correlate with the quality.ConclusionsGreater variability in the quality of compressions exists between different rescuers than a rescuer over time. Some participants were not able to deliver ideal compressions from the start, when the effects of fatigue were minimal.

scholarly journals Basic life support providers’ assessment of centre of the chest and inter-nipple line for hand position and their underlying anatomical structures

Resuscitation ◽  
2011 ◽  
Vol 82 (2) ◽  
pp. 190-194 ◽  
Author(s):  
Joyce Yeung ◽  
Thomas Butler ◽  
James W. Digby ◽  
John Hughes ◽  
David Higgie ◽  
...  
Keyword(s):  
Basic Life Support ◽  
Life Support ◽  
Hand Position ◽  
Support Providers ◽  
Anatomical Structures

scholarly journals Quality of Chest Compressions Differs over Time between Advanced and Basic Life Support

2015 ◽  
Vol 06 (12) ◽  
pp. 944-953
Author(s):  
Pär Lindblad ◽  
Annika Åström Victorén ◽  
Christer Axelsson ◽  
Bjarne Madsen Härdig
Keyword(s):  
Basic Life Support ◽  
Life Support ◽  
Chest Compressions ◽  
Over Time

scholarly journals Metronome Use Positively Affect Cardiopulmonary Resuscitation Parameters: Prospective Observational Multicenter Manikin Study

2020 ◽  
Keyword(s):  
Cardiopulmonary Resuscitation ◽  
Minute Ventilation ◽  
Heart Association ◽  
High Volume ◽  
Compression Rate ◽  
Compression Depth ◽  
Manikin Study ◽  
Volume Ventilation ◽  
Cpr Quality

Objective: Clinical studies have shown that eliminating performer errors is important to ensure high quality cardiopulmonary resuscitation (CPR). Literature on the effects of metronome use on the quality of CPR is scarce. This study aimed to investigate the effect of metronome use on the quality of cardiopulmonary resuscitation. Methods: Thirty volunteer emergency physicians who were divided into 15 groups participated in this prospective, observational, multi-center, manikin study. Firstly, each participant performed conventional CPR on a manikin, and then performed metronome-guided CPR after a short break. Parameters affecting CPR quality were evaluated based on the recommendations of the 2015 American Heart Association CPR and Emergency Cardiovascular Care Guideline. In addition, the fatigue levels of participants were evaluated using the Borg Fatigue Index. Results: Metronome-guided CPR significantly improved the chest compression rate (median (Interquartile Range-IQR); 128 (22) compressions/min vs. 110 (2) compressions/min; 95%CI, p < 0.001), deep compression rate (median (IQR); 95.25 (80) compressions/min vs. 72.63 (105) compressions/min; 95%CI, p < 0.001), compression depth (median (IQR); 62.50 (11) mm vs. 60.25 (14) mm; 95%CI, p = 0.016), ventilation number (median (IQR); 11.25 (6) ventilations/min vs. 9.50 (1) ventilations/min; 95%CI, p = 0.001), high-volume ventilation count (median (IQR); 10.13 (6) ventilations/min vs. 9.50 (1) ventilations/min; 95%CI, p = 0.026), minute ventilation volume (median (IQR); 11.75 (10) L/min vs. 8.03 (3) L/min; 95%CI, p < 0.05), and fatigue levels (median (IQR); 3 (2) vs. 2 (2); in 95%CI, p < 0.05). Conclusions: Our study showed that metronome is a useful device for reaching effective CPR. Metronome guidance may change the CPR parameters positively. This study is in accordance with previous studies which have investigated the effect of metronome-guided CPR on survival.

scholarly journals An alternative method of chest compression from over-the-head during cardiopulmonary resuscitation

2019 ◽  
Author(s):  
Michał Ćwiertnia ◽  
Marek Kawecki ◽  
Tomasz Ilczak ◽  
Monika Mikulska ◽  
Mieczyslaw Dutka ◽  
...  
Keyword(s):  
Cardiopulmonary Resuscitation ◽  
Chest Compression ◽  
Artificial Respiration ◽  
Hand Position ◽  
Chest Compressions ◽  
Confined Spaces ◽  
Medical Response ◽  
Emergency Interventions ◽  
The Subject

Abstract Background Maintaining highly effective cardiopulmonary resuscitation (CPR) can be particularly difficult when artificial respiration using a bag-valve-mask device, combined with chest compression have to be carried out by one person. The aim of the study is to compare the quality of CPR conducted by one paramedic using chest compression from the patient’s side, with compression carried out from behind the patient’s head. Methods The subject of the study were two methods of CPR – ‘standard’ (STD) and ‘over-the-head’ (OTH). The STD method consisted of 30 chest compressions from the patient’s side, and two attempts at artificial respiration after moving round to behind the patient’s head. In the OTH method, both compression and respiration were conducted from behind the patient’s head. Results Both CPR methods were conducted by 38 paramedics working in medical response teams. The average time of the interruptions between compression cycles (STD 9.184 s, OTH 7.316 s, p<0.001); the depth of compression 50–60 mm (STD 50.65%, OTH 60.22%, p<0.001); the rate of compression 100–120/min. (STD 46.39%, OTH 53.78%, p<0.001); complete chest wall recoil (STD 84.54%, OTH 91.46%, p<0.001); correct hand position (STD 99.32%, OTH method 99.66%, p<0.001). The remaining parameters showed no significant differences in comparison to reference values. Conclusions The demonstrated higher quality of CPR in the simulated research using the OTH method conducted by one person justifies the use of this method in a wider range of emergency interventions than only for CPR conducted in confined spaces.

Commencing one-handed chest compressions while activating emergency medical system using a handheld mobile device in lone-rescuer basic life support: a randomised cross-over simulation study

2021 ◽  
pp. emermed-2021-211774
Author(s):  
Sang O Park ◽  
Dong Hyuk Shin ◽  
Changhoon Kim ◽  
Young Hwan Lee
Keyword(s):  
Simulation Study ◽  
Basic Life Support ◽  
Life Support ◽  
Controlled Trial ◽  
Medical System ◽  
Emergency Medical System ◽  
Hand Position ◽  
Chest Compressions ◽  
Paired Difference ◽  
Emergency Medical

IntroductionIn conventional basic life support (c-BLS), a lone rescuer is recommended to start chest compressions (CCs) after activating the emergency medical system. To initiate earlier CCs in lone-rescuer BLS, we designed a modified BLS (m-BLS) sequence in which the lone rescuer commences one-handed CCs while calling for help using a handheld cellular phone with the other free hand. This study aimed to compare the quality of BLS between c-BLS and m-BLS.MethodsThis was a simulation study performed with a randomised cross-over controlled trial design. A total of 108 university students were finally enrolled. After training for both c-BLS and m-BLS, participants performed a 3-minute c-BLS or m-BLS on a manikin with a SkillReporter at random cross-over order. The paired mean difference with SE between c-BLS and m-BLS was assessed using paired t-test.ResultsThe m-BLS had reduced lag time before the initiation of CCs (with a mean estimated paired difference (SE) of −35.0 (90.4) s) (p<0.001). For CC, a significant increase in compression fraction and a higher number of CCs with correct depth were observed in m-BLS (with a mean estimated paired difference (SE) of 16.2% (0.6) and 26.9% (3.3), respectively) (all p<0.001). However, no significant paired difference was observed in the hand position, compression rate and interruption time. For ventilation, the mean tidal volumes did not differ. However, the number of breaths with correct tidal volume was higher in m-BLS than in c-BLS.ConclusionIn simulated lone-rescuer BLS, the m-BLS could deliver significantly earlier CCs than the c-BLS while maintaining high-quality cardiopulmonary resuscitation.

Abstract 038: American Heart Association Mission: Lifeline Breakthrough Series Collaborative Improving the Survival Rates for Out of Hospital Cardiac Arrest by Focusing on Early CPR With an Emphasis on Chest Compressions

2017 ◽  
Vol 10 (suppl_3) ◽  
Author(s):  
Charles R Siegel ◽  
Anjan Chakrabarti ◽  
Lewis Siegel ◽  
Forrest Winslow ◽  
Thomas Hall
Keyword(s):  
Cardiac Arrest ◽  
Quality Improvement ◽  
Performance Measures ◽  
Effective Diffusion ◽  
Survival Rates ◽  
Public Health Problem ◽  
Heart Association ◽  
Performance Measure ◽  
Compression Rate ◽  
Hospital Cardiac Arrest

Introduction: Out-of-hospital cardiac arrest (OHCA) remains a highly morbid public health problem. Despite improving practices and clear guidelines, mortality from this condition remains high at 90%, with survivors often suffering from poor neurologic outcomes. To determine the feasibility of quality improvement collaboratives to narrow gaps between evidence-based practice and patient care for OHCA, we conducted a pilot study of the AHA Resuscitation Collaborative. Methods: Eight emergency medical service agencies participated in the quality improvement collaborative pilot project. We identified several OHCA performance measures to assess the quality of care, guide collaborative activities, and monitor change in performance over time. Over the course of four learning sessions, participants were trained in quality improvement and performance measurement, analyzed performance measure results, and shared successes and challenges. Results: Five remaining agencies underwent the process outlined in Figure 1. Adherence to performance measures, including compression rate compliance (Figure 2), improved over the course of the collaborative. Compression rate compliance in Figure 2 corresponds to the process improvement efforts of the Chesapeake Fire Department with achievement of goals for optimal range of chest compression rate between 100 and 120 compressions per minute during resuscitations. Conclusion: As demonstrated in Virginia, the collaborative approach was an effective framework to improve OHCA care. Improvement in performance measures, the evident commitment of dedicated peers and colleagues, consistent collaboration, and the effective diffusion of best practices all support the continued use of this model.

Abstract 133: Electrical Insulating Gloves for Safe Hands-on Defibrillation Do Not Compromise the Quality of Chest Compressions

Circulation ◽  
2014 ◽  
Vol 130 (suppl_2) ◽  
Author(s):  
Jakob E Thomsen ◽  
Martin Harpsø ◽  
Graham W Petley ◽  
Svend Vittinghus ◽  
Charles D Deakin ◽  
...  
Keyword(s):  
Clinical Examination ◽  
Chest Compression ◽  
Electrical Insulation ◽  
Compression Rate ◽  
Chest Compressions ◽  
Compression Depth ◽  
Resuscitation Guidelines ◽  
Hands On ◽  
Class 1

Introduction: We have recently shown that Class 1 electrical insulating gloves are safe for hands-on defibrillation. Continuous chest compressions during defibrillation reduce the peri-shock pauses and increase the subsequent chance of successful defibrillation. In this study we have investigated the effect of these electrical insulation gloves on the quality of chest compressions, compared with normal clinical examination gloves. Methods: Emergency medical technicians trained in 2010 resuscitation guidelines delivered uninterrupted chest compressions for 6 min on a manikin, whilst wearing Class 1 electrical insulating gloves or clinical examination gloves. The order of gloves was randomized and each session of chest compressions was separated by at least 30 min to avoid fatigue. Data were collected from the manikin. Compression depth and compression rate were compared. Results: Data from 35 participants are shown in Figure 1. There was no statistically significant difference between Class 1 electrical insulating gloves in chest compression depth (median±range: 45 (28-61) vs 43 (28-61) p=0.69) and chest compression rate (113 (67-150) vs 113(72-145), p=0.87) when compared to clinical examination cloves. Conclusion: These preliminary data suggest that the use of Class 1 electrical insulation gloves does not reduce the quality of chest compressions during simulated CPR compared to clinical examination gloves.

Abstract 2003: More Chest Compressions and Fewer Shocks Are Given During Out-of-Hospital Cardiac Arrest Resuscitation With the 2005 AHA Guidelines

Circulation ◽  
2007 ◽  
Vol 116 (suppl_16) ◽  
Author(s):  
Lynn J White ◽  
Sarah A Cantrell ◽  
Robert Cronin ◽  
Shawn Koser ◽  
David Keseg ◽  
...  
Keyword(s):  
Cardiac Arrest ◽  
Life Support ◽  
Survival Rates ◽  
Automated Analysis ◽  
Spontaneous Circulation ◽  
Chest Compressions ◽  
Convenience Sample ◽  
Care Protocol ◽  
Before And After ◽  
Hospital Cardiac Arrest

Introduction Long pauses without chest compressions (CC) have been identified in CPR provided by EMS professionals for out-of-hospital cardiac arrest (OOHCA). The 2005 AHA ECC CPR guidelines emphasize CC. The 2005 AHA Basic Life Support (BLS) for Healthcare Professionals (HCP) course introduced a training method with more CPR skills practice during the DVD based course. The purpose of this before/after study was to determine whether CC rates increased after introduction of the 2005 course. Methods This urban EMS system has 400 cardiac etiology OOHCA events annually. A convenience sample of 49 continuous electronic ECG recordings of VF patients was analyzed with the impedance channel of the LIFEPAK 12 (Physio-Control, Redmond WA) and proprietary software. A trained researcher verified the automated analysis. Each CC during the resuscitation attempt and pauses in CC before and after the first defibrillation shock were noted. The time of return of spontaneous circulation (ROSC) was determined by medical record review and onset of regular electrical activity without CC. Medical records were reviewed for outcome to hospital discharge. The EMS patient care protocol for VF was changed on July 1, 2006 to comply with the 2005 AHA ECC guidelines. Cases were grouped by the OOHCA date: 9/2004 to 12/31/2006 (pre) and 7/1/2006 to 4/21/2007 (post). EMS personnel began taking the 2005 BLS for HCP course during spring 2006. Monthly courses over 3 years will recertify 1500 personnel. Results 29 cases were analyzed from the pre group and 20 from the post group. Compressions per minute increased from a mean (±SD) of 47 ± 16 pre to 75 ± 33 post (P < 0.01). The mean count of shocks given per victim decreased from 4.5 ± 4.0 pre to 2.8 ± 1.8 post (P < 0.04). The CC pause before the first shock was unchanged (23.6 ± 18.4 seconds to 22.1 ± 17.9). but the CC pause following that shock decreased significantly from 48.7 ± 63.2 to 11.8 ± 22.5 (p=0.008). Rates of ROSC (55% pre, 50% post) and survival to discharge (15% pre, 13% post) were similar. Conclusion Following introduction of the 2005 BLS for HCP course and the EMS protocol change, the quality of CPR delivered to victims of OOHCA improved significantly compared with pre-2006 CPR. The sample size was too small to detect differences in survival rates.

Abstract 64: A Tale of Seven EMS Systems: An Impedance Threshold Device and Improved CPR Techniques Double Survival Rates After Out-of-Hospital Cardiac Arrest

Circulation ◽  
2007 ◽  
Vol 116 (suppl_16) ◽  
Author(s):  
Tom P Aufderheide ◽  
Marvin Birnbaum ◽  
Charles Lick ◽  
Brent Myers ◽  
Laurie Romig ◽  
...  
Keyword(s):  
Cardiac Arrest ◽  
Hospital Discharge ◽  
Life Support ◽  
Survival Rates ◽  
Heart Association ◽  
Outcome Data ◽  
Therapeutic Interventions ◽  
Threshold Device ◽  
Hospital Cardiac Arrest ◽  
Impedance Threshold Device

Introduction: Maximizing outcomes after cardiac arrest depends on optimizing a sequence of interventions from collapse to hospital discharge. The 2005 American Heart Association (AHA) Guidelines recommended many new interventions during CPR (‘New CPR’) including use of an Impedance Threshold Device (ITD). Hypothesis: The combination of the ITD and ‘New CPR’ will increase return of spontaneous circulation (ROSC) and hospital discharge (HD) rates in patients with an out-of-hospital cardiac arrest. Methods: Quality assurance data were pooled from 7 emergency medical services (EMS) systems (Anoka Co., MN; Harris Co., TX; Madison, WI; Milwaukee, WI; Omaha, NE; Pinellas Co., FL; and Wake Co., NC) where the ITD (ResQPOD®, Advanced Circulatory Systems; Minneapolis, MN) was deployed for >3 months. Historical or concurrent control data were used for comparison. The EMS systems simultaneously implemented ‘New CPR’ including compression/ventilation strategies to provide more compressions/min and continuous compressions during Advanced Life Support. All sites stressed the importance of full chest wall recoil. The sites have a combined population of ~ 3.2 M. ROSC data were available from all sites; HD data were available as of June 2007 from 5 sites (MN, TX, Milwaukee, NE, NC). Results: A total of 893 patients treated with ‘New CPR’ + ITD were compared with 1424 control patients. The average age of both study populations was 64 years; 65% were male. Comparison of the ITD vs controls (all patients) for ROSC and HD [Odds ratios (OR), (95% confidence intervals), and Fisher’s Exact Test] were: 37.9% vs 33.8% [1.2, (1.02, 1.40), p=0.022] and 15.7% vs 7.9% [2.2, (1.53, 3.07), p<0.001], respectively. Patients with ventricular fibrillation had the best outcomes in both groups. Neurological outcome data are pending. Therapeutic hypothermia was used in some patients (MN, NC) after ROSC. Conclusion: Adoption of the ITD + ‘New CPR’ resulted in only a >10% increase in ROSC rates but a doubling of hospital discharge rates, from 7.9% to 15.7%, (p<0.001). These data represent a currently optimized sequence of therapeutic interventions during the performance of CPR for patients in cardiac arrest and support the widespread use of the 2005 AHA CPR Guidelines including use of the ITD.

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