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Folke F, Shahriari P, Hansen CM, Gregers MCT. Public access defibrillation: challenges and new solutions. Curr Opin Crit Care 2023; 29:168-174. [PMID: 37093002 PMCID: PMC10155700 DOI: 10.1097/mcc.0000000000001051] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
Abstract
PURPOSE OF REVIEW The purpose of this article is to review the current status of public access defibrillation and the various utility modalities of early defibrillation. RECENT FINDINGS Defibrillation with on-site automated external defibrillators (AEDs) has been the conventional approach for public access defibrillation. This strategy is highly effective in cardiac arrests occurring in close proximity to on-site AEDs; however, only a few cardiac arrests will be covered by this strategy. During the last decades, additional strategies for public access defibrillation have developed, including volunteer responder programmes and drone assisted AED-delivery. These programs have increased chances of early defibrillation within a greater radius, which remains an important factor for survival after out-of-hospital cardiac arrest. SUMMARY Recent advances in the use of public access defibrillation show great potential for optimizing early defibrillation. With new technological solutions, AEDs can be transported to the cardiac arrest location reaching OHCAs in both public and private locations. Furthermore, new technological innovations could potentially identify and automatically alert the emergency medical services in nonwitnessed OHCA previously left untreated.
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Affiliation(s)
- Fredrik Folke
- Copenhagen University Hospital - Emergency Medical Services Capital Region
- Department of Clinical Medicine, University of Copenhagen
- Department of Cardiology, Copenhagen University Hospital - Herlev and Gentofte
| | - Persia Shahriari
- Copenhagen University Hospital - Emergency Medical Services Capital Region
- Department of Clinical Medicine, University of Copenhagen
| | - Carolina Malta Hansen
- Copenhagen University Hospital - Emergency Medical Services Capital Region
- Department of Cardiology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Mads Christian Tofte Gregers
- Copenhagen University Hospital - Emergency Medical Services Capital Region
- Department of Clinical Medicine, University of Copenhagen
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2
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Network of Automated External Defibrillators in Poland before the SARS-CoV-2 Pandemic: An In-Depth Analysis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19159065. [PMID: 35897427 PMCID: PMC9331639 DOI: 10.3390/ijerph19159065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 07/21/2022] [Accepted: 07/22/2022] [Indexed: 02/05/2023]
Abstract
Introduction: Sudden cardiac arrest (SCA), which causes more than half of all cardiovascular related deaths, can be regarded as a common massive global public health problem. Analyzing out-of-hospital cardiac arrest (OHCA) cases, one of the key components is automatic external defibrillators (AEDs). Aim: The aim of this study was to analyze the use and distribution of AEDs in Polish public places. Materials and methods: The data were analyzed by using the Excel and R calculation programs. Results: The data represents 120 uses of automatic external defibrillators used in Polish public space in the period 2008–2018. The analysis describes 1165 locations of AEDs in Poland. It was noted that the number of uses in the period 2010–2016 fluctuated at a constant value, with a significant rise in 2017. When analyzing the time of interventions in detail the following was noted: the highest percentage of interventions was observed in April, and the lowest in November; the highest number of interventions was observed on a Friday, while the least number of interventions was observed on a Sunday; most occurred between 12:00 to 16:00, and least between 20:00 to 8:00. Conclusions: The observed growth in the number of cases of AED use in public places is associated with the approach to training, the emphasis on public access to defibrillation, and, therefore, the growth of social awareness. This study will be continued. The next analysis would include 2020–2022 and would be a comparative analysis with the current research.
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Hardeland C, Sunde K, Ramsdal H, Hebbert SR, Soilammi L, Westmark F, Nordum F, Hansen AE, Steen-Hansen JE, Olasveengen TM. Factors impacting upon timely and adequate allocation of prehospital medical assistance and resources to cardiac arrest patients. Resuscitation 2016; 109:56-63. [PMID: 27768861 DOI: 10.1016/j.resuscitation.2016.09.027] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Revised: 09/01/2016] [Accepted: 09/28/2016] [Indexed: 10/20/2022]
Abstract
AIM Explore, understand and address issues that impact upon timely and adequate allocation of prehospital medical assistance and resources to out-of-hospital cardiac arrest (OHCA) patients. METHODS Mixed-methods design obtaining data for one year in three emergency medical communication centres (EMCC); Oslo-Akershus (OA), Vestfold-Telemark (VT) and Østfold (Ø). Data collection included quantitative data from analysis of dispatch logs, ambulance records and audio files. Qualitative data were collected through in-depth interviews and non-participant observations. RESULTS OA-, VT- and Ø-EMCC responded to 1095 OHCAs and 579 of these calls were included for further analysis (333, 143 and 103, respectively). There were significant site differences in their recognition of OHCA (89, 94 and 78%, respectively, p<0.001), provision of CPR instructions (83, 83 and 61%, respectively, p<0.001), time from call answered to initial CPR instructions (1.4min (1.2, 1.6), 1.1min (0,9, 1.2) and 1.3 (1.2, 1.7) respectively, p=0.002). The most frequent reason for delayed or failed recognition of OHCA was misinterpretation of agonal breathing. Interviews and observations revealed individual differences in protocol use, interrogation strategy and assessment of breathing. Use of protocol was only part of decision making, dispatchers trusted their own clinical experience and intuition, and used assumptions about the patient and the situation as part of decision making. CONCLUSION Agonal breathing continues to be the main barrier to recognition of cardiac arrest. Individual differences among dispatchers' strategies can directly impact on performance, mainly due to the wide definition of cardiac arrest and lack of uniform tools for assessment of breathing.
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Affiliation(s)
- Camilla Hardeland
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, PB 1171 Blindern, N-0318 Oslo, Norway; Norwegian National Advisory Unit on Prehospital Emergency Medicine, Oslo University Hospital, PB 4956 Nydalen, N-0424 Oslo, Norway.
| | - Kjetil Sunde
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, PB 1171 Blindern, N-0318 Oslo, Norway; Department of Anaesthesiology, Division of Emergencies and Critical Care, Oslo University Hospital, PB 4956 Nydalen, N-0424 Oslo, Norway
| | - Helge Ramsdal
- Department of Health and Social Studies, Østfold University College, PB 700, 1757 Halden, Norway
| | - Susan R Hebbert
- Prehospital Clinic, Vestfold and Telemark Emergency Medical Communication Centre, Vestfold Hospital Trust, PB 2168, NO-3103 Tønsberg, Norway
| | - Linda Soilammi
- Prehospital clinic, Oslo Emergency Medical Communication Centre, Oslo University Hospital, PB 4956 Nydalen, N-0424 Oslo, Norway
| | - Fredrik Westmark
- Prehospital Clinic, Østfold HF Hospital Trust, PB 300, NO-1714 Sarpsborg, Norway
| | - Fredrik Nordum
- Norwegian National Advisory Unit on Prehospital Emergency Medicine, Oslo University Hospital, PB 4956 Nydalen, N-0424 Oslo, Norway; Prehospital clinic, Oslo University Hospital, PB 4956 Nydalen, N-0424 Oslo, Norway
| | - Andreas E Hansen
- Prehospital clinic, Oslo Emergency Medical Communication Centre, Oslo University Hospital, PB 4956 Nydalen, N-0424 Oslo, Norway
| | - Jon E Steen-Hansen
- Prehospital Clinic, Vestfold and Telemark Emergency Medical Communication Centre, Vestfold Hospital Trust, PB 2168, NO-3103 Tønsberg, Norway
| | - Theresa M Olasveengen
- Norwegian National Advisory Unit on Prehospital Emergency Medicine, Oslo University Hospital, PB 4956 Nydalen, N-0424 Oslo, Norway; Department of Anaesthesiology, Division of Emergencies and Critical Care, Oslo University Hospital, PB 4956 Nydalen, N-0424 Oslo, Norway
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Alonso E, Aramendi E, Daya M, Irusta U, Chicote B, Russell JK, Tereshchenko LG. Circulation detection using the electrocardiogram and the thoracic impedance acquired by defibrillation pads. Resuscitation 2015; 99:56-62. [PMID: 26705970 DOI: 10.1016/j.resuscitation.2015.11.014] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Revised: 10/06/2015] [Accepted: 11/22/2015] [Indexed: 11/25/2022]
Abstract
AIM To develop and evaluate a method to detect circulation in the presence of organized rhythms (ORs) during resuscitation using signals acquired by defibrillation pads. METHODS Segments containing electrocardiogram (ECG) and thoracic impedance (TI) signals free of artifacts were used. The ECG corresponded to ORs classified as pulseless electrical activity (PEA) or pulse-generating rhythm (PR). A first dataset containing 1091 segments was split into training and test sets to develop and validate the circulation detector. The method processed ECG and TI to obtain the impedance circulation component (ICC). Morphological features were extracted from ECG and ICC, and combined into a classifier to discriminate between PEA and PR. The performance of the method was evaluated in terms of sensitivity (PR) and specificity (PEA). A second dataset (86 segments from different patients) was used to assess two application of the method: confirmation of arrest by recognizing absence of circulation during ORs and detection of return of spontaneous circulation (ROSC) during resuscitation. In both cases, time to confirmation of arrest/ROSC was determined. RESULTS The method showed a sensitivity/specificity of 92.1%/90.3% and 92.2%/91.9% for training and test sets respectively. The method confirmed cardiac arrest with a specificity of 93.3% with a median delay of 0s after the first OR annotation. ROSC was detected with a sensitivity of 94.4% with a median delay of 57s from ROSC onset. CONCLUSION The method showed good performance, and can be reliably used to distinguish perfusing from non-perfusing ORs.
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Affiliation(s)
- Erik Alonso
- Communications Engineering Department, University of the Basque Country UPV/EHU, Alameda Urquijo S/N, 48013 Bilbao, Spain
| | - Elisabete Aramendi
- Communications Engineering Department, University of the Basque Country UPV/EHU, Alameda Urquijo S/N, 48013 Bilbao, Spain
| | - Mohamud Daya
- Department of Emergency Medicine, Oregon Health & Science University, 97239-3098 Portland, OR, United States
| | - Unai Irusta
- Communications Engineering Department, University of the Basque Country UPV/EHU, Alameda Urquijo S/N, 48013 Bilbao, Spain
| | - Beatriz Chicote
- Communications Engineering Department, University of the Basque Country UPV/EHU, Alameda Urquijo S/N, 48013 Bilbao, Spain
| | - James K Russell
- Department of Emergency Medicine, Oregon Health & Science University, 97239-3098 Portland, OR, United States
| | - Larisa G Tereshchenko
- Knight Cardiovascular Institute, Oregon Health & Science University, 97239-3098 Portland, OR, United States
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Martínez-Rubio A, Gusi G, Guillaumet E, Cazorla M, Galán S, Bagà R, Guilera E, Bonastre M, Raimón Gumà J, Anguera I, Ibars S, Ochagavia A, Mestre J, Font J, Saura P, Dalmases M, Blanch L, Artigas A. The fully automatic external cardioverter defibrillator: reality of a new meaningful scenario for in-hospital cardiac arrests. Expert Rev Med Devices 2014; 2:33-9. [PMID: 16293026 DOI: 10.1586/17434440.2.1.33] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Sudden cardiac death is an unresolved problem which causes significant mortality and morbidity in both the community and in-hospital setting. Cardiac arrest is often caused by ventricular tachyarrhythmias which may be mostly interrupted by cardioversion or defibrillation. The single most critical factor for survival is the response time. Over the last 30 years, there have been virtually no procedural changes in the way hospitals address in-hospital resuscitation. A unique device has been developed that eliminates human intervention and assures defibrillation therapy is administered in seconds. This is accomplished with a fully automatic, external bedside monitor defibrillator designed to be prophylactically attached to hospitalized patients at risk of ventricular tachyarrhythmia. The safety and efficacy of the device has been demonstrated in multicenter US and European trials. Thus, this device allows a new scenario which may increase survival and enables meaningful redistribution of health resources.
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Affiliation(s)
- Antoni Martínez-Rubio
- Hospital de Sabadell, Department of Cardiology, Fund. Universitaria Parc Taulí, Parc Taulí s/n, E-08208 Sabadell, Barcelona, Spain.
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6
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Ruiz J, Alonso E, Aramendi E, Kramer-Johansen J, Eftestøl T, Ayala U, González-Otero D. Reliable extraction of the circulation component in the thoracic impedance measured by defibrillation pads. Resuscitation 2013; 84:1345-52. [DOI: 10.1016/j.resuscitation.2013.05.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Revised: 05/03/2013] [Accepted: 05/23/2013] [Indexed: 10/26/2022]
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Adelborg K, Thim T, Secher N, Grove EL, Løfgren B. Benefits and shortcomings of mandatory first aid and basic life support courses for learner drivers. Resuscitation 2011; 82:614-7. [PMID: 21330039 DOI: 10.1016/j.resuscitation.2010.12.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2010] [Revised: 12/07/2010] [Accepted: 12/28/2010] [Indexed: 11/30/2022]
Abstract
AIM Annually, more than 127,000 people are killed and at least 2.4 million people injured in road accidents in Europe. Consequently, in half of all countries in the European Union a first aid and basic life support course has become mandatory for learner drivers. The aim of this study was to evaluate the effect of this course on participants' knowledge and self-assessed first aid and basic life support skills. METHODS Participants were given a questionnaire before and after course. RESULTS In total, 115 participants (response rate 98%) were included in the study. Mean age was 20 years (46% female and 54% male). Out of 12 questions, the average number of correct answers increased from 5.6 before the course to 8.7 after the course (p < 0.001). Upon completion of the course, 95% or more of the participants knew how to prioritise treatment of several casualties, knew how to relieve a foreign body airway obstruction, and knew the recommended compression-ventilation ratio during CPR (p < 0.001 for all). Despite significant improvements after the course only 64% knew how to diagnose cardiac arrest, 44% knew when to activate an automatic external defibrillator and 23% were aware of when to activate the emergency medical services. Participants significantly increased their self-confidence in own skills after the course (p < 0.001). CONCLUSION A mandatory course for learner drivers significantly improves participants' knowledge and their self-assessed skills in first aid and basic life support. However, improvements of the course should be considered on a number of key topics.
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Affiliation(s)
- Kasper Adelborg
- Faculty of Health Sciences, Aarhus University, Aarhus, Denmark
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8
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Mukoyama T, Kinoshita K, Nagao K, Tanjoh K. Reduced effectiveness of vasopressin in repeated doses for patients undergoing prolonged cardiopulmonary resuscitation. Resuscitation 2009; 80:755-61. [PMID: 19446387 DOI: 10.1016/j.resuscitation.2009.04.005] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2008] [Revised: 03/24/2009] [Accepted: 04/01/2009] [Indexed: 10/20/2022]
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10
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Abstract
Two-thirds of deaths from coronary disease occur in the pre-hospital phase and are caused by ventricular fibrillation or pulseless ventricular tachycardia, for which electrical defibrillation is the only effective treatment. The time delay between the onset of ventricular fibrillation and the administration of the first defibrillatory shock is the most important determinant for survival. To achieve the earliest defibrillation possible, rescuers others than physicians need to be able to initiate this treatment. The international scientific community strongly supports the concept of early defibrillation in the setting of a strong chain of survival. New technological developments of automated external defibrillators (AEDs) allowed the implementation of defibrillation by the first responding professional rescuer. As a consequence of the technological evolution in implantable defibrillators, much research has also been done on new defibrillation waveforms and alternative energy levels in external defibrillators. After initial animal research, human clinical investigation has shown that initial low energy (150J) nonprogressive (150J-150J-150J) impedance-adjusted biphasic waveform defibrillatory shocks for patients in out-of-hospital ventricular fibrillation are safe, acceptable and clinically effective. Reporting on outcome from cardiac arrest must be as uniform as possible to allow conclusions on performance of emergency medical service systems. The 'Utstein Style' nomenclature is a glossary of terms and a reporting guideline for uniform description of cardiac arrest, resuscitation, the emergency medical service (EMS) system and the outcome. Reports on experiences with AED programmes by traditional and non-traditional professional rescuers support the view that AEDs should not be implemented in EMS systems as an isolated intervention, but that efforts are equally needed to strengthen the other links of the chain of survival. The international scientific community (American Heart Association, International Liaison Committee on Resuscitation and European Resuscitation Council) have issued guidelines for the use of AEDs by EMS providers and first responders, and a universal treatment algorithm is proposed.
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Affiliation(s)
- L Bossaert
- Critical Care Department, University Hospital Antwerp, B2650 Edegem-Antwerp, Belgium.
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11
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Piñana López A, Canovas Inglés A, Alonso García C, Ruiz Angosto E, Vicente López J. Formación continuada en desfibrilador semiautomático externo. Semergen 2006. [DOI: 10.1016/s1138-3593(06)73286-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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Whitfield R, Colquhoun M, Chamberlain D, Newcombe R, Davies CS, Boyle R. The Department of Health National Defibrillator Programme: analysis of downloads from 250 deployments of public access defibrillators. Resuscitation 2005; 64:269-77. [PMID: 15733753 DOI: 10.1016/j.resuscitation.2005.01.003] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
From April 2000 to November 2002, the Department of Health (England) placed 681 automated external defibrillators (AEDs) in 110 public places for use by volunteer lay first responders. An audit has been undertaken of the first 250 deployments, of which 182 were for confirmed cardiac arrest. Of these, 177 were witnessed whilst 5 occurred in situations that were remote or initially inaccessible to the responders. The response interval between collapse and the initiation of CPR or AED placement was estimated to be 3-5 min in most cases. Ventricular fibrillation or rapid ventricular tachycardia (one case) was the first recorded rhythm in 146 cases (82%). In all, 44 of the 177 witnessed cases are known to have survived to hospital discharge (25%). Complete downloads are available for 173 witnessed cases and of these 140 were shocked: first-shock success, defined as termination of the fibrillatory waveform for 5 s or more, was achieved in 132 of them. When data quality permitted, the downloads were analysed with special reference to the numbers of compressions given and also to interruptions in compression sequences for ventilations, for rhythm analysis by the AED, for clinical checks, and for unexplained operator delays. The average rate of compressions during sequences was 120 min(-1), but because of interruptions, the actual number administered over a full minute from the first CPR prompt was a median of only 38. The speed of response by the lay first responders in relation to AED use was similar to that reported for healthcare professionals.
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Affiliation(s)
- Richard Whitfield
- Prehospital Emergency Research Unit, School of Medicine, Wales College of Medicine, Cardiff University, Heath Park, Cardiff CF14 4XN, UK
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13
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Kinney KG, Boyd SYN, Simpson DE. Guidelines for appropriate in-hospital emergency team time management: the Brooke Army Medical Center approach. Resuscitation 2004; 60:33-8. [PMID: 14987781 DOI: 10.1016/s0300-9572(03)00259-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2002] [Revised: 07/08/2003] [Accepted: 07/08/2003] [Indexed: 11/21/2022]
Abstract
UNLABELLED Successful outcome following cardiac arrest have been reported in the range of 13-59%. It is well established that the time from the onset of a ventricular arrhythmia to successful defibrillation predicts outcome. Recent out of hospital arrest protocols minimizing time to defibrillation have reported significant improvement in outcomes. The Bethesda conference and American Heart Association (AHA) both set standards for defibrillation time for in hospital codes but do not set standards for other interventions. In February 2000, the Brooke Army Medical Center (BAMC) cardiopulmonary resuscitation committee published time guidelines for the initiation of CPR, emergency team arrival, first defibrillation and first medication. We sought to evaluate resuscitation outcomes before and after this intervention. METHODS Data on each response time was prospectively collected as was etiology for the event, emergency location, patient age, gender, and emergency outcome for the 7 months prior to the guideline introduction and 15 months afterwards. RESULTS The mean response times (in minutes) for initiation of CPR (1.3 vs. 0.4), emergency team arrival (1.6 vs. 1.2), first defibrillation (7.8 vs. 6.6) and first medication (4.1 vs. 3.8) demonstrated trends toward improvement. Compliance with the time standards also increased (67-91, 85-95, 67-71 and 93-86%, respectively). Emergency survival trended toward improvement (47 vs. 57%) while discharge survival significantly increased from 3 to 24% (P=0.017). CONCLUSIONS Setting time guidelines for Advanced Cardiac Life Support (ACLS) improved initiation of CPR, emergency team arrival, first defibrillation, and first medication administration. These time reductions were accompanied by improved event survival and a statistically improved survival to discharge.
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Affiliation(s)
- Kurt G Kinney
- Cardiology Service, William Beaumont Army Medical Center, WBAMC MCHM MED C, 5005 N Piedras Street, El Paso, TX 79920-5001, USA.
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Harve H, Silfvast T. The use of automated external defibrillators by non-medical first responders in Finland. Eur J Emerg Med 2004; 11:130-3. [PMID: 15167170 DOI: 10.1097/01.mej.0000129166.59063.1a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To assess the spread of automated external defibrillators and their use by non-medical first responders in Finland. METHODS A structured survey was mailed to all voluntary and ordinary fire brigades in Finland. The questions were related to the purchase, experience of use and anticipated benefits from the devices. RESULTS Approximately 90% of all users (133 providers) in the target group of non-medical first responders answered. The number of automated external defibrillators in use by these operators has increased progressively since 1992. Most respondents possessed only one automated external defibrillator, and a median of 12 users were trained to use each device. A total of 85% of the respondents retrained at least once a year, and 94% checked the device on a daily basis. Half of the users had written authorization to use the automated external defibrillator, and two thirds had written instructions on how to operate it. Each automated external defibrillator was used on average five to 10 times annually. Although none of the respondents could provide data on how many cardiac arrests they had attended or the success of resuscitation during the preceding year, 94% reported that they considered the automated external defibrillator useful, and 80% thought that the cost-benefit of the device was either very good or good. CONCLUSION Although there are many automated external defibrillators in use by non-medical first responders in Finland, the results of this study show that there are large variations between individual fire brigades regarding the use of these devices as part of the first response system. This is considered to be caused by the lack of national standards and regulations, which should define a full integration of first-responder programmes into the emergency medical service system.
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Affiliation(s)
- Heini Harve
- Department of Anaesthesia and Intensive Care Medicine, Meilahti Hospital, Helsinki University Central Hospital and University of Helsinki, Helsinki, Finland
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15
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Martínez-Rubio A, Kanaan N, Borggrefe M, Block M, Mäkijärvi M, Fedele F, Pappone C, Haverkamp W, Merino JL, Esquivias GB, Cinca J. Advances for treating in-hospital cardiac arrest: safety and effectiveness of a new automatic external cardioverter-defibrillator. J Am Coll Cardiol 2003; 41:627-32. [PMID: 12598075 DOI: 10.1016/s0735-1097(02)02865-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
OBJECTIVES The purpose of this study was to prospectively analyze the performance and safety of a new programmable, fully automatic external cardioverter-defibrillator (AECD) in a European multicenter trial. BACKGROUND Although, the response time to cardiac arrest (CA) is a major determinant of mortality and morbidity, in-hospital strategies have not significantly changed during the last 30 years. METHODS Patients (n = 117) at risk of CA in monitored wards (n = 51) and patients undergoing electrophysiologic testing or implantable cardioverter-defibrillator (ICD) implantation (n = 66) were enrolled. The accuracy of the automatic response of the device to any change of rhythm (lasting >1 s and >4 beats) was confirmed by reviewing the simultaneously recorded Holter data and the programmed parameters. RESULTS During 1,240 h, 1,988 episodes of rhythm changes were documented. A total of 115 episodes lasted > or =10 s or needed treatment (pacing, n = 32; ICD, n = 51; AECD, n = 35) for termination. The device detected ventricular tachyarrhythmias with a sensitivity of 100% and specificity of 97.6% (true negatives, n = 1,454; true positives, n = 499; false positives, n = 35; false negatives, n = 0). The false positives were all caused by T-wave oversensing during ventricular pacing. There were no complications or adverse events. The mean response time was 14.4 s for those episodes needing a full charge of the capacitor. CONCLUSIONS This new AECD is safe and effective in detecting, monitoring, and treating spontaneous arrhythmias. This fully automatic device shortens the response time to treatment, and it is likely that it will significantly improve the outcome of patients with in-hospital CA.
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Affiliation(s)
- Antoni Martínez-Rubio
- Cardiology, University Hospital de la Sta. Creu i St. Pau, Avda. St Antoni Ma. Claret 167, E-08025 Barcelona, Spain.
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16
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Actualización en soporte vital avanzado. Semergen 2003. [DOI: 10.1016/s1138-3593(03)74171-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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17
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Abstract
Very early defibrillation, within the first few minutes of VF cardiac arrest, results in significantly improved survival rates [1,10-12,34]. Most EMS systems cannot consistently provide defibrillation within the first few minutes following cardiac arrest. Defibrillation within the first few minutes following collapse is potentially achievable through the use of AEDs and PAD [9-14,62]. The delivery of defibrillation with AEDs has been made more efficient through the use of impedance-compensated defibrillation, larger pad sizes, and biphasic waveforms [34]. The technology is simple and easy to use. Preliminary cost-effectiveness analysis indicates that PAD and first-responder defibrillation are economically as attractive as other interventions in cardiac arrest [44]. Effective PAD requires significant investment in time, energy, informed planning, and rigorous quality improvement; however, the benefits are enormous. Reported VF survival rates can approach 50% or higher [11,12,62]. PAD provides the potential opportunity to transform cardiac arrest into a survivable event for most victims by making the community the ultimate coronary care unit.
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Affiliation(s)
- Alexander L Sommers
- Department of Emergency Medicine, Medical College of Wisconsin, Froedtert Hospital East, 9200 West Wisconsin Avenue, Milwaukee, WI 53226, USA
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18
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Dyson E, Smith GB. Common faults in resuscitation equipment--guidelines for checking equipment and drugs used in adult cardiopulmonary resuscitation. Resuscitation 2002; 55:137-49. [PMID: 12413751 DOI: 10.1016/s0300-9572(02)00169-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Successful advanced life support relies, in part, upon the availability and correct functioning of resuscitation equipment. However, numerous publications report deficiencies and defects in key items of resuscitation equipment, particularly those relating to airway management and defibrillation. Some of these are generic and relate to basic device failure (e.g. intrinsic design faults, manufacturing errors, random component failure), external factors (e.g. power failure, gas supply failure, electromagnetic interference) and human error (notably, inadequate knowledge, lack of experience and training, inadequate checking, insufficient maintenance). However, others are device specific. This paper identifies the common, generic faults that lead to equipment malfunction and recommends the resuscitation equipment essential for successful cardiopulmonary resuscitation. It also describes examples of specific equipment malfunction and makes suggestions for the nature and frequency of resuscitation equipment and drug checks, using a structured, and easy-to-recall list.
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Affiliation(s)
- Elsbeth Dyson
- Department of Intensive Care Medicine, Queen Alexandra Hospital, Portsmouth PO6 3LY, UK
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Moule P, Albarran JW. Automated external defibrillation as part BLS: implications for education and practice. Resuscitation 2002; 54:223-30. [PMID: 12204454 DOI: 10.1016/s0300-9572(02)00150-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
The latest Adult Basic Life Support (BLS) guidelines support the inclusion of the use of the automated external defibrillator (AED), as part of basic life support (BLS). Emphasis on the provision of early defibrillation as part of BLS acknowledges the importance of this manoeuvre in the successful termination of ventricular fibrillation. The ramifications of such changes for both first responders and organisations implementing the guidelines should not be underestimated. Issues relating to resourcing, content and duration of training and retraining, auditing and evaluation require further exploration. To consider these issues now seems particularly pertinent, given the recent launch of the UK Government's paper on public health, 'Saving Lives-Our Healthier Nation' which seeks to deploy AEDs in busy public places for use by trained members of the lay public. Additionally, defibrillation has been identified as one of the key competencies that all trained nurses and other health care providers should be able to undertake. This paper will consider the background to the current guideline changes, analyse the wider implications of translating the recommendations into practice, and offer possible solutions to address the issues raised. Whilst the analysis is particularly pertinent to the United Kingdom, many of the issues raised have international importance.
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Affiliation(s)
- Pam Moule
- Faculty of Health and Social Care, University of the West of England, Glenside Campus, Blackberry Hill, Stapleton, BS16 1DD, Bristol, UK.
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20
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Monsieurs KG, Handley AJ, Bossaert LL. [European Resuscitation Council Guidelines 2000 for automated external defibrillation]. Med Clin (Barc) 2002; 118:421-2. [PMID: 11943106 DOI: 10.1016/s0025-7753(02)72407-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- K G Monsieurs
- Ghent University Hospital. Intensive Care Unit 1K121C. De Pintelaan 185. 9000 Ghent. Bélgica
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21
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Kenward G, Castle N, Hodgetts TJ. Should ward nurses be using automatic external defibrillators as first responders to improve the outcome from cardiac arrest? A systematic review of the primary research. Resuscitation 2002; 52:31-7. [PMID: 11801346 DOI: 10.1016/s0300-9572(01)00438-5] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
INTRODUCTION The outcome from in-hospital cardiac arrest has improved little since the implementation of cardiopulmonary resuscitation 40 years ago. Early defibrillation improves survival following ventricular fibrillation and pulseless ventricular tachycardia. The emergence of automatic external defibrillators and advisory defibrillators has been heralded as the answer to defibrillation delays in-hospital. AIM To locate and evaluate the evidence supporting automatic external defibrillator use in-hospital on general wards. METHOD A systematic review of indexed and grey literature to identify primary research. RESULTS Fifteen in-hospital automatic external defibrillator studies were located, five met the inclusion criteria. CONCLUSIONS There is limited primary research evaluating automatic external defibrillators in-hospital. Manual defibrillators remain the most commonly used device for in-hospital defibrillation. Automated external defibrillators offer an alternative to manual defibrillation providing they have a screen and manual override capability, and the technology for pacing is close to hand. For in-hospital automatic external defibrillator programmes to be effective a change in nursing philosophy must occur, and defibrillation must become an expected rather than an extended nursing role.
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Affiliation(s)
- G Kenward
- Frimley Park Hospital, Project Office, Camberley, Surrey GU16 5UJ, UK.
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22
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White RD. Technologic advances and program initiatives in public access defibrillation using automated external defibrillators. Curr Opin Crit Care 2001; 7:145-51. [PMID: 11436520 DOI: 10.1097/00075198-200106000-00002] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Widespread provision of early defibrillation following cardiac arrest holds major promise for improved survival from ventricular fibrillation. The critical element in predicting a successful outcome is the rapidity with which defibrillation is achieved. A worldwide awareness of this potential and its advocacy by such organizations as the American Heart Association have been pivotal in the evolution of initiatives to make defibrillation more widely and more rapidly available. The feasibility of this initiative, known as public access defibrillation, is in large measure a direct consequence of major technologic advances in automated external defibrillators (AEDs). New low-energy waveforms with biphasic morphology have been shown to be more effective in terminating ventricular fibrillation and may do so with less myocardial injury. Placement of AEDs in a variety of nontraditional settings such as police cars, aircraft and airport terminals, and gambling casinos has been shown to yield an impressive number of survivors of cardiac arrest in ventricular fibrillation. Questions yet to be answered center on the appropriate disposition of AEDs in public access defibrillation settings, training and retraining issues, device maintenance, and collection of accurate data to document benefit and to identify areas of needed improvement or expansion of AED availability.
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Affiliation(s)
- R D White
- Department of Anesthesiology, Mayo Medical School and Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA.
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Monsieurs KG, Handley AJ, Bossaert LL. European Resuscitation Council Guidelines 2000 for Automated External Defibrillation. A statement from the Basic Life Support and Automated External Defibrillation Working Group(1) and approved by the Executive Committee of the European Resuscitation Council. Resuscitation 2001; 48:207-9. [PMID: 11278084 DOI: 10.1016/s0300-9572(00)00378-6] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
The European Resuscitation Council (ERC) last issued guidelines for Automated External Defibrillators (AEDs) in 1998 [1]. The American Heart Association, together with representatives from the International Liaison Committee on Resuscitation (ILCOR), then undertook a series of evidence-based evaluations of the science of resuscitation [2] which culminated in the publication of "Guidelines 2000 for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care" in August 2000 [3,4]. The Basic Life Support and Automated External Defibrillation Working Group (BLS&AED Working Group of the ERC) has considered this document and has recommended changes in the ERC AED guidelines. These are presented in this paper.
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Affiliation(s)
- K G Monsieurs
- Ghent University Hospital, Intensive Care Unit 1K12IC, De Pintelaan 185, 9000 Ghent, Belgium.
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24
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Part 4: the automated external defibrillator: key link in the chain of survival. European Resuscitation Council. Resuscitation 2000; 46:73-91. [PMID: 10978789 DOI: 10.1016/s0300-9572(00)00272-0] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Spearpoint KG, McLean CP, Zideman DA. Early defibrillation and the chain of survival in 'in-hospital' adult cardiac arrest; minutes count. Resuscitation 2000; 44:165-9. [PMID: 10825615 DOI: 10.1016/s0300-9572(00)00158-1] [Citation(s) in RCA: 91] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
OBJECTIVE To report the outcomes from and the impact of the chain of survival in 'in-hospital' cardiac arrest where the presenting rhythm was VF/VT, the arrest was witnessed, defibrillation was conducted rapidly and no other resuscitation interventions were required. OUTCOME MEASURES Any return of spontaneous circulation and discharge from hospital. METHODS A 2-year prospective resuscitation audit using the Utstein style was conducted within a major London NHS Hospital Group. RESULTS There were 124 patients who had primary VF/VT arrest. Eight were excluded from the study and 14 had non-witnessed cardiac arrest. Twenty one patients had witnessed VF/VT arrest but with delayed defibrillation, 81 patients had witnessed VF/VT arrest with rapid defibrillation, 69 patients had witnessed VF/VT arrest with rapid defibrillation, CPR and other additional interventions. There were 15 patients that had witnessed cardiac arrest with a presenting rhythm of VF/VT, who received rapid defibrillation and had no ventilation or chest compression prior to or following defibrillation. All 15 patients achieved a return of spontaneous circulation, and 12 were discharged alive. CONCLUSIONS Rapid defibrillation prior to any other resuscitation intervention is associated with increased survival from witnessed VF/VT arrest in in-hospital cardiac arrest victims, and that the time to first shock is critical in enhancing the prospects of long-term survival in these patients.
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Affiliation(s)
- K G Spearpoint
- Resuscitation Service, Department of Anaesthetics and Intensive Care, Hammersmith Hospital, London, UK
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26
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Epelde F, Quintana S. [Survival and quality of life in out-of-hospital cardiac arrest in a population without an emergency care system]. Med Clin (Barc) 2000; 114:157-8. [PMID: 10734628 DOI: 10.1016/s0025-7753(00)71224-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Acevedo Esteban FJ, Fernández Gonzáles MT, Suárez Bustamente RM, Rey Paterna P, Flórez IC, Gilarranz Vaquero JL. Automated defibrillation performed by emergency medical technicians: the Madrid experience. Resuscitation 2000; 43:155-7. [PMID: 10694177 DOI: 10.1016/s0300-9572(99)00125-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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28
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Marín-Huerta (coordinador) E, Peinado R, Asso A, Loma Á, Villacastín JP, Muñiz J, Brugada J. Muerte súbita cardíaca extrahospitalaria y desfibrilación precoz. Rev Esp Cardiol 2000. [DOI: 10.1016/s0300-8932(00)75165-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Ruppert M, Reith MW, Widmann JH, Lackner CK, Kerkmann R, Schweiberer L, Peter K. Checking for breathing: evaluation of the diagnostic capability of emergency medical services personnel, physicians, medical students, and medical laypersons. Ann Emerg Med 1999; 34:720-9. [PMID: 10577401 DOI: 10.1016/s0196-0644(99)70097-1] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
STUDY OBJECTIVE International guidelines for cardiopulmonary resuscitation (CPR) recommend determination of unconsciousness, breathlessness, and absence of pulse to diagnose cardiorespiratory arrest. Thus far, there have been no scientifically proven data available regarding the quality of assessing breathlessness. The study objective was to evaluate the effectiveness of checking for breathing in an emergency situation, to determine the necessary amount of time until diagnosis, and to document used techniques. METHODS Four different populations were tested for their ability to assess breathlessness: emergency medical services (EMS) personnel, physicians, medical students, and laypersons. Each participant was asked to perform the diagnostic procedure twice, first with a breathing or not-breathing unresponsive test person and then with a modified megacode manikin (with the possibility of simulated respiratory function). The order of testing and the respiratory status were strictly randomized. Diagnostic accuracy, time interval to diagnosis, and used techniques were documented. RESULTS A total of 261 persons were tested in 522 trials, with a median time interval of 12 seconds for obtaining a diagnosis. Regarding all participants, the correct diagnosis was achieved in 81.0% (EMS personnel, 89.7%; physicians, 84.5%; medical students, 78.4%; laypersons, 71.5%). Only 55.6% of all participants showed correct diagnostic skills (EMS personnel, 91.3%; physicians, 51.5%; medical students, 61.9%; laypersons, 18.5%). CONCLUSION Checking for breathing was shown to be mostly inaccurate and unreliable. This diagnostic procedure takes more time than recommended in international guidelines. Therefore CPR training should focus more on the determination of breathlessness. Also, the guidelines for CPR should be revised.
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Affiliation(s)
- M Ruppert
- Institute for Emergency Medicine and Prehospital Care, University of Munich, Medical School, Munich, Germany.
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30
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Abstract
Since the introduction around 1960 of external cardiopulmonary resuscitation (CPR) basic life support (BLS) without equipment, i.e. steps A (airway control)-B (mouth-to-mouth breathing)-C (chest (cardiac) compressions), training courses by instructors have been provided, first to medical personnel and later to some but not all lay persons. At present, fewer than 30% of out-of-hospital resuscitation attempts are initiated by lay bystanders. The numbers of lives saved have remained suboptimal, in part because of a weak or absent first link in the life support chain. This review concerns education research aimed at helping more lay persons to acquire high life supporting first aid (LSFA) skill levels and to use these skills. In the 1960s, Safar and Laerdal studied and promoted self-training in LSFA, which includes: call for the ambulance (without abandoning the patient) (now also call for an automatic external defibrillator); CPR-BLS steps A-B-C; external hemorrhage control; and positioning for shock and unconsciousness (coma). LSFA steps are psychomotor skills. Organizations like the American Red Cross and the American Heart Association have produced instructor-courses of many more first aid skills, or for cardiac arrest only-not of LSFA skills needed by all suddenly comatose victims. Self-training methods might help all people acquire LSFA skills. Implementation is still lacking. Variable proportions of lay trainees evaluated, ranging from school children to elderly persons, were found capable of performing LSFA skills on manikins. Audio-tape or video-tape coached self-practice on manikins was more effective than instructor-courses. Mere viewing of demonstrations (e.g. televised films) without practice has enabled more persons to perform some skills effectively compared to untrained control groups. The quality of LSFA performance in the field and its impact on outcome of patients remain to be evaluated. Psychological factors have been associated with skill acquisition and retention, and motivational factors with application. Manikin practice proved necessary for best skill acquisition of steps B and C. Simplicity and repetition proved important. Repetitive television spots and brief internet movies for motivating and demonstrating would reach all people. LSFA should be part of basic health education. LSFA self-learning laboratories should be set up and maintained in schools and drivers' license stations. The trauma-focused steps of LSFA are important for 'buddy help' in military combat casualty care, and natural mass disasters.
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Affiliation(s)
- P Eisenburger
- Department of Emergency Medicine, Allgemeines Krankenhaus, Vienna, Austria
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White RD, Hankins DG, Bugliosi TF. Seven years' experience with early defibrillation by police and paramedics in an emergency medical services system. Resuscitation 1998; 39:145-51. [PMID: 10078803 DOI: 10.1016/s0300-9572(98)00135-x] [Citation(s) in RCA: 198] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
PRIMARY OBJECTIVE To assess the outcome of patients with out-of-hospital cardiac arrest with ventricular fibrillation as the presenting rhythm in an emergency medical services system utilizing a combined police/paramedic response to provide early defibrillation. MATERIALS AND METHODS Police and paramedics were dispatched from law enforcement and ambulance communications centers, respectively. First-arriving personnel delivered initial shocks, all using automated external defibrillators. Patients were classified according to response to initial shocks: restoration of pulses with shocks only or in need of advanced life support, including epinephrine. Discharge survival was defined as return to home without disabling neurologic injury. RESULTS Over the 7-year period of study 131 patients presented with ventricular fibrillation: 58 were first treated by police and 73 by paramedics. Restoration of pulses with shocks only and discharge survival were not different in police and paramedic groups, with overall survival of 40% (53 of 131 patients). Among the survivors, 19% (18/95 patients) obtained a spontaneous circulation only after administration of epinephrine and other ALS interventions. CONCLUSION Both restoration of a functional circulation, without need for advanced life support interventions, and discharge survival without neurologic disability are very dependent upon the rapidity with which defibrillation is accomplished, regardless of who delivers the shocks. In addition, a smaller but significant number of patients who require ALS interventions, including epinephrine, for restoration of a spontaneous circulation survive to discharge. Short time differences, on the order of 1 min, are significant determinants of both immediate response to shocks and discharge survival.
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Affiliation(s)
- R D White
- Department of Anesthesiology, Mayo Clinic, Rochester, MN 55905, USA
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Quinn T. Cardiopulmonary resuscitation: new European guidelines. BRITISH JOURNAL OF NURSING (MARK ALLEN PUBLISHING) 1998; 7:1070-7. [PMID: 9830916 DOI: 10.12968/bjon.1998.7.18.5584] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Cardiac arrest is the ultimate medical emergency. Without rapid action by witnesses and responding health professionals, chances of survival are remote. In this article the key evidence-based aspects of resuscitation, basic life support and early defibrillation are discussed in light of the recent publication of revised guidelines from the European Resuscitation Council. The importance of calling for skilled help at the earliest opportunity is emphasized, facilitating rapid access to emergency services (in the community) and the cardiac arrest team (in hospital). The advent of the automated external defibrillator (AED) presents additional opportunities to save lives and it is recommended that registered nurses are trained in, and authorized to use, AEDs in their professional practice.
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Recommendations of a Task Force of the European Society of Cardiology and the European Resuscitation Council on The Pre-hospital Management of Acute Heart Attacks. Resuscitation 1998; 38:73-98. [PMID: 9863570 DOI: 10.1016/s0300-9572(98)00064-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Nolan J, Gwinnutt C. 1998 European guidelines on resuscitation. Simplifications should make them easier to teach and implement. BMJ (CLINICAL RESEARCH ED.) 1998; 316:1844-5. [PMID: 9632399 PMCID: PMC1113356 DOI: 10.1136/bmj.316.7148.1844] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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