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Urigüen JA, Ruiz de Gauna S, Gutiérrez JJ, Azcárate I, Leturiondo M, Redondo K, Russell JK, Daya MR. Metrics of impulsiveness of manual chest compressions for out-of-hospital cardiopulmonary resuscitation. Heliyon 2024; 10:e28739. [PMID: 38601572 PMCID: PMC11004537 DOI: 10.1016/j.heliyon.2024.e28739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 03/15/2024] [Accepted: 03/22/2024] [Indexed: 04/12/2024] Open
Abstract
Aim Propose new metrics of impulsiveness of manual chest compressions (CCs) that account for shape and duration, separate the characteristics of the compressive part of the CC cycle from those of the recoil part, and are uncorrelated to CC depth and rate. Methods We conducted a retrospective analysis of adult out-of-hospital cardiac arrest monitor-defibrillator recordings having CPR data. Specifically, episodes of adult patients with ≥ 1000 compressions free of leaning were examined. CCs were obtained from the depth signal of the valid episodes, and we calculated the novel metrics: compression area index (CAI), recoil area index (RAI), compression impulsiveness index (CII) and recoil impulsiveness index (RII). Generalized linear mixed-effects models and Jonckheere-Terpstra trend analyses were employed to measure differences between populations and trends, and the absolute value of Pearson's correlation coefficient | r | was used to report dependence between variables. Statistics are reported as median and interquartile range. Results We analyzed 982,340 CCs corresponding to 453 episodes, for which we calculated their CAI, RAI and duty cycle (DC). We analyzed the metrics for various populations: age, sex, any ROSC achieved and disposition, and found that CAI was significantly different according to patient disposition and RAI relative to age and sex (p < 0.05 ). None of the metrics was correlated strongly to depth or rate (| r | values of 0.22 or smaller), and all of them varied for CC series corresponding to the same rescuer over the course of resuscitation (p trend < 0.05 ). However, we observed that the metrics are not balanced, in that for any value of DC, CAI and RAI span almost their entire ranges. Conclusion The proposed metrics correctly and completely describe manual CC waveforms, improve upon the DC, since they depend on the signal waveform, and provide additional information to current indicators of quality CPR, depth and rate. Furthermore, they allow to differentiate the compressive and recoil parts of the CC cycle, reflecting influence of the rescuer (via CAI or CII) and of the biomechanics of the patient's chest (via RAI or RII). Thus, they have the potential to contribute to better understanding CPR dynamics and, eventually, to enhanced quality of CPR practice as additional indicators of proper manual CC technique.
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Affiliation(s)
- Jose Antonio Urigüen
- Group of Signal and Communications, University of the Basque Country (UPV/EHU), Bilbao, Bizkaia, Spain
- Department of Applied Mathematics, University of the Basque Country (UPV/EHU), Bilbao, Bizkaia, Spain
| | - Sofía Ruiz de Gauna
- Group of Signal and Communications, University of the Basque Country (UPV/EHU), Bilbao, Bizkaia, Spain
| | - Jose Julio Gutiérrez
- Group of Signal and Communications, University of the Basque Country (UPV/EHU), Bilbao, Bizkaia, Spain
| | - Izaskun Azcárate
- Group of Signal and Communications, University of the Basque Country (UPV/EHU), Bilbao, Bizkaia, Spain
- Department of Applied Mathematics, University of the Basque Country (UPV/EHU), Bilbao, Bizkaia, Spain
| | - Mikel Leturiondo
- Group of Signal and Communications, University of the Basque Country (UPV/EHU), Bilbao, Bizkaia, Spain
| | - Koldo Redondo
- Group of Signal and Communications, University of the Basque Country (UPV/EHU), Bilbao, Bizkaia, Spain
| | - James Knox Russell
- Center for Policy and Research in Emergency Medicine (CPR-EM), Department of Emergency Medicine, Oregon Health & Science University, Portland, OR 97239, USA
| | - Mohamud Ramzan Daya
- Center for Policy and Research in Emergency Medicine (CPR-EM), Department of Emergency Medicine, Oregon Health & Science University, Portland, OR 97239, USA
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Rappold TE, Morgan RW, Reeder RW, Cooper KK, Weeks MK, Widmann NJ, Graham K, Berg RA, Sutton RM. The association of arterial blood pressure waveform-derived area duty cycle with intra-arrest hemodynamics and cardiac arrest outcomes. Resuscitation 2023; 191:109950. [PMID: 37634859 PMCID: PMC10829972 DOI: 10.1016/j.resuscitation.2023.109950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 08/16/2023] [Accepted: 08/17/2023] [Indexed: 08/29/2023]
Abstract
AIM Develop a novel, physiology-based measurement of duty cycle (Arterial Blood Pressure-Area Duty Cycle [ABP-ADC]) and evaluate the association of ABP-ADC with intra-arrest hemodynamics and patient outcomes. METHODS This was a secondary retrospective study of prospectively collected data from the ICU-RESUS trial (NCT02837497). Invasive arterial waveform data were used to derive ABP-ADC. The primary exposure was ABP-ADC group (<30%; 30-35%; >35%). The primary outcome was systolic blood pressure (sBP). Secondary outcomes included intra-arrest physiologic goals, CPR quality targets, and patient outcomes. In an exploratory analysis, adjusted splines and receiver operating characteristic (ROC) curves were used to determine an optimal ABP-ADC associated with improved hemodynamics and outcomes using a multivariable model. RESULTS Of 1129 CPR events, 273 had evaluable arterial waveform data. Mean age is 2.9 years + 4.9 months. Mean ABP-ADC was 32.5% + 5.0%. In univariable analysis, higher ABP-ADC was associated with lower sBP (p < 0.01) and failing to achieve sBP targets (p < 0.01). Other intra-arrest physiologic parameters, quality metrics, and patient outcomes were similar across ABP-ADC groups. Using spline/ROC analysis and clinical judgement, the optimal ABP-ADC cut point was set at 33%. On multivariable analysis, sBP was significantly higher (point estimate 13.18 mmHg, CI95 5.30-21.07, p < 0.01) among patients with ABP-ADC < 33%. Other intra-arrest physiologic and patient outcomes were similar. CONCLUSIONS In this multicenter cohort, a lower ABP-ADC was associated with higher sBPs during CPR. Although ABP-ADC was not associated with outcomes, further studies are needed to define the interactions between CPR mechanics and intra arrest patient physiology.
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Affiliation(s)
- Tommy E Rappold
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, University of Pennsylvania School of Medicine, Philadelphia, PA, USA.
| | - Ryan W Morgan
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, University of Pennsylvania School of Medicine, Philadelphia, PA, USA
| | - Ron W Reeder
- Department of Pediatrics, University of Utah, Salt Lake City, UT, USA
| | - Kellimarie K Cooper
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, University of Pennsylvania School of Medicine, Philadelphia, PA, USA
| | - M Katie Weeks
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, University of Pennsylvania School of Medicine, Philadelphia, PA, USA
| | - Nicholas J Widmann
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, University of Pennsylvania School of Medicine, Philadelphia, PA, USA
| | - Kathryn Graham
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, University of Pennsylvania School of Medicine, Philadelphia, PA, USA
| | - Robert A Berg
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, University of Pennsylvania School of Medicine, Philadelphia, PA, USA
| | - Robert M Sutton
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, University of Pennsylvania School of Medicine, Philadelphia, PA, USA
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Panchal AR, Bartos JA, Cabañas JG, Donnino MW, Drennan IR, Hirsch KG, Kudenchuk PJ, Kurz MC, Lavonas EJ, Morley PT, O’Neil BJ, Peberdy MA, Rittenberger JC, Rodriguez AJ, Sawyer KN, Berg KM, Arafeh J, Benoit JL, Chase M, Fernandez A, de Paiva EF, Fischberg BL, Flores GE, Fromm P, Gazmuri R, Gibson BC, Hoadley T, Hsu CH, Issa M, Kessler A, Link MS, Magid DJ, Marrill K, Nicholson T, Ornato JP, Pacheco G, Parr M, Pawar R, Jaxton J, Perman SM, Pribble J, Robinett D, Rolston D, Sasson C, Satyapriya SV, Sharkey T, Soar J, Torman D, Von Schweinitz B, Uzendu A, Zelop CM, Magid DJ. Part 3: Adult Basic and Advanced Life Support: 2020 American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care. Circulation 2020; 142:S366-S468. [DOI: 10.1161/cir.0000000000000916] [Citation(s) in RCA: 371] [Impact Index Per Article: 92.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Kandasamy J, Theobald PS, Maconochie IK, Jones MD. Can real-time feedback improve the simulated infant cardiopulmonary resuscitation performance of basic life support and lay rescuers? Arch Dis Child 2019; 104:793-801. [PMID: 31164375 DOI: 10.1136/archdischild-2018-316576] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 03/14/2019] [Accepted: 03/18/2019] [Indexed: 11/03/2022]
Abstract
BACKGROUND Performing high-quality chest compressions during cardiopulmonary resuscitation (CPR) requires achieving of a target depth, release force, rate and duty cycle. OBJECTIVE This study evaluates whether 'real time' feedback could improve infant CPR performance in basic life support-trained (BLS) and lay rescuers. It also investigates whether delivering rescue breaths hinders performing high-quality chest compressions. Also, this study reports raw data from the two methods used to calculate duty cycle performance. METHODOLOGY BLS (n=28) and lay (n=38) rescuers were randomly allocated to respective 'feedback' or 'no-feedback' groups, to perform two-thumb chest compressions on an instrumented infant manikin. Chest compression performance was then investigated across three compression algorithms (compression only; five rescue breaths then compression only; five rescue breaths then 15:2 compressions). Two different routes to calculate duty cycle were also investigated, due to conflicting instruction in the literature. RESULTS No-feedback BLS and lay groups demonstrated <3% compliance against each performance target. The feedback rescuers produced 20-fold and 10-fold increases in BLS and lay cohorts, respectively, achieving all targets concurrently in >60% and >25% of all chest compressions, across all three algorithms. Performing rescue breaths did not impede chest compression quality. CONCLUSIONS A feedback system has great potential to improve infant CPR performance, especially in cohorts that have an underlying understanding of the technique. The addition of rescue breaths-a potential distraction-did not negatively influence chest compression quality. Duty cycle performance depended on the calculation method, meaning there is an urgent requirement to agree a single measure.
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Affiliation(s)
- Jeyapal Kandasamy
- Biomedical Engineering Research Group, Cardiff University, Cardiff, UK
| | - Peter S Theobald
- Biomedical Engineering Research Group, Cardiff University, Cardiff, UK
| | - Ian K Maconochie
- Paediatric Emergency Department, Imperial College Hospital NHS Healthcare Trust, London, UK
| | - Michael D Jones
- Biomedical Engineering Research Group, Cardiff University, Cardiff, UK
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