External Defibrillator

14,000,000 Leading Edge Experts on the ideXlab platform

Scan Science and Technology

Contact Leading Edge Experts & Companies

Scan Science and Technology

Contact Leading Edge Experts & Companies

The Experts below are selected from a list of 7332 Experts worldwide ranked by ideXlab platform

Rudolph W Koster - One of the best experts on this subject based on the ideXlab platform.

  • impact of onsite or dispatched automated External Defibrillator use on survival after out of hospital cardiac arrest
    Circulation, 2011
    Co-Authors: Jocelyn Berdowski, Marieke T Blom, Abdennasser Bardai, Jan G P Tijssen, Rudolph W Koster
    Abstract:

    Background—There have been few studies on the effectiveness of bystander automated External Defibrillator (AED) use in out-of-hospital cardiac arrest. The objective of this study was to determine whether actual use of onsite or dispatched AED reduces the time to first shock compared with no AED use and thereby improves survival. Methods and Results—We performed a population-based cohort study of 2833 consecutive patients with a nontraumatic out-of-hospital cardiac arrest before emergency medical system arrival between 2006 and 2009. The primary outcome, neurologically intact survival to discharge, was compared by use of multivariable logistic regression analysis. An onsite AED had been applied in 128 of the 2833 cases, a dispatched AED in 478, and no AED in 2227. Onsite AED use reduced the time to first shock from 11 to 4.1 minute. Neurologically intact survival was 49.6% for patients treated with an onsite AED compared with 14.3% without an AED (unadjusted odds ratio, 5.63; 95% confidence interval, 3.91–...

  • impact of onsite or dispatched automated External Defibrillator use on survival after out of hospital cardiac arrest
    Circulation, 2011
    Co-Authors: Jocelyn Berdowski, Marieke T Blom, Abdennasser Bardai, Jan G P Tijssen, Rudolph W Koster
    Abstract:

    Background—There have been few studies on the effectiveness of bystander automated External Defibrillator (AED) use in out-of-hospital cardiac arrest. The objective of this study was to determine whether actual use of onsite or dispatched AED reduces the time to first shock compared with no AED use and thereby improves survival. Methods and Results—We performed a population-based cohort study of 2833 consecutive patients with a nontraumatic out-of-hospital cardiac arrest before emergency medical system arrival between 2006 and 2009. The primary outcome, neurologically intact survival to discharge, was compared by use of multivariable logistic regression analysis. An onsite AED had been applied in 128 of the 2833 cases, a dispatched AED in 478, and no AED in 2227. Onsite AED use reduced the time to first shock from 11 to 4.1 minute. Neurologically intact survival was 49.6% for patients treated with an onsite AED compared with 14.3% without an AED (unadjusted odds ratio, 5.63; 95% confidence interval, 3.91–...

  • delaying a shock after takeover from the automated External Defibrillator by paramedics is associated with decreased survival
    Resuscitation, 2010
    Co-Authors: Jocelyn Berdowski, Anouk P Van Alem, Ron J. Schulten, Jan G P Tijssen, Rudolph W Koster
    Abstract:

    Abstract Introduction The purpose of this study was to investigate whether the takeover by Advanced Life Support [ALS] trained ambulance paramedics from rescuers using an automated External Defibrillator [AED] delays shocks and if this delay is associated with decreased survival after out-of-hospital cardiac arrest [OHCA]. Methods We analyzed continuous ECG recordings of LIFEPAK AEDs and associated manual Defibrillator recordings of OHCA of presumed cardiac cause, prospectively collected from July 2005 to July 2009. The primary outcome measure was survival to discharge. Among 693 patients treated with AEDs, 110 had a shockable initial rhythm and a shockable rhythm during ALS takeover. We measured the time interval between the expected shock if the AED would remain attached to the patient and the first observed shock given by the manual Defibrillator [shock timing]. Results Survival was 62% (13/21) if the shock was given early ( P =0.02) if the shock was 20–150s delayed and 21% (7/34; OR=0.16, 95% CI=0.05–0.54; P =0.003) if the shock was delayed >150s. The OR for trend was 0.41, 95% CI=0.25–0.71; P =0.001. The association between shock timing and survival was significant for patients with more than 150s shock delay (OR=0.19; 95% CI=0.04–0.71; P =0.02) or for trend in shock timing (0.42, 95% CI=0.20–0.84; P =0.02) after multivariable adjustment for prognostic factors age and slope of ventricular fibrillation. Conclusions ALS takeover delays the next shock delivery in almost two-third of cases. This delay is associated with decreased survival.

  • Abstract 7: Professionals Decrease Survival After Takeover from Lay Rescuers by Interrupting the Automated External Defibrillator Protocol
    Circulation, 2008
    Co-Authors: Jocelyn Berdowski, Ron J. Schulten, Rudolph W Koster
    Abstract:

    Introduction - There are no guidelines for transition of care with ongoing cardiopulmonary resuscitation (CPR) from rescuers with automated External Defibrillator (AED) to paramedics. The objective...

  • trained first responders with an automated External Defibrillator how do they perform in real resuscitation attempts
    Resuscitation, 2005
    Co-Authors: Wiebe De Vries, Anouk P Van Alem, Joost Van Oostrom, Rudolph W Koster
    Abstract:

    Abstract Introduction: The quality of first-responder performance at the end of automated External Defibrillator (AED) training may not predict the performance adequately during a real resuscitation attempt. Methods: Between January and December 2000, we evaluated 67 resuscitation attempts in Amsterdam and surroundings, where police officers used an AED. We compared their performance with their assessment at the end of their ERC AED training course. One of the main goals of training was to deliver a shock within 90s after switching the power on in the AED. Results: We analysed 127 police officers working in 67 police-teams. The police officers had a mean age of 35 years (range 23–54 years), 73% was male. The interval between AED training and the first resuscitation attempt was a median of 4 months (range 1–13). 78% percent of the 67 teams consisted of two police officers who both were qualified as "competent" after the initial training. Successful completion of the course correlated well with good performance during a resuscitation attempt ( p = 0.009). When measured switching the power on in the AED, 92% of the victims received a shock within 90s. Conclusions: Successful training correlates well with successful performance in the field. Competence of a team may be better than competence of two separate individuals.

Lena Karlsson - One of the best experts on this subject based on the ideXlab platform.

  • effect of optimized versus guidelines based automated External Defibrillator placement on out of hospital cardiac arrest coverage an in silico trial
    Journal of the American Heart Association, 2020
    Co-Authors: Lena Karlsson, Laurie J Morrison, Steven C Brooks, Fredrik Folke, Timothy C Y Chan
    Abstract:

    Background Mathematical optimization of automated External Defibrillator (AED) placement may improve AED accessibility and out‐of‐hospital cardiac arrest (OHCA) outcomes compared with American Hear...

  • effect of optimized versus guidelines based automated External Defibrillator placement on out of hospital cardiac arrest coverage an in silico trial
    Journal of the American Heart Association, 2020
    Co-Authors: Lena Karlsson, Laurie J Morrison, Steven C Brooks, Fredrik Folke, Timothy C Y Chan
    Abstract:

    Background Mathematical optimization of automated External Defibrillator (AED) placement may improve AED accessibility and out‐of‐hospital cardiac arrest (OHCA) outcomes compared with American Hear...

  • improving bystander defibrillation in out of hospital cardiac arrests at home
    European heart journal. Acute cardiovascular care, 2020
    Co-Authors: Lena Karlsson, Carolina Malta Hansen, Shahzleen Rajan, K B Sondergaard, Christina Vourakis, Christopher L F Sun, Linn Andelius
    Abstract:

    AIMS Most out-of-hospital cardiac arrests occur at home with dismal bystander defibrillation rates. We investigated automated External Defibrillator coverage of home arrests, and the proportion potentially reachable with an automated External Defibrillator before emergency medical service arrival according to different bystander activation strategies. METHODS AND RESULTS Cardiac arrests in homes (private/nursing/senior homes) in Copenhagen, Denmark (2008-2016) and registered automated External Defibrillators (2007-2016), were identified. Automated External Defibrillator coverage (distance from arrest to automated External Defibrillator) and accessibility at the time of arrest were examined according to route distance to nearest automated External Defibrillator and emergency medical service response time. The proportion of arrests reachable with an automated External Defibrillator by bystander was calculated using two-way (from patient to automated External Defibrillator and back) and one-way (from automated External Defibrillator to patient) potential activation strategies. Of 1879 home arrests, automated External Defibrillator coverage ≤100 m was low (6.3%) and a two-way bystander could potentially only retrieve an accessible automated External Defibrillator before emergency medical service in 31.1% (n=37) of cases. If a bystander only needed to travel one-way to bring an automated External Defibrillator (≤100 m, ≤250 m and ≤500 m), 45.4% (n=54/119), 37.1% (n=196/529) and 29.8% (n=350/1174) could potentially be reached before the emergency medical service based on current automated External Defibrillator accessibility. CONCLUSIONS Few home arrests were reachable with an automated External Defibrillator before emergency medical service if bystanders needed to travel from patient to automated External Defibrillator and back. However, nearly one-third of arrests ≤500 m of an automated External Defibrillator could be reached before emergency medical service arrival if the bystander only needed to travel one-way from the automated External Defibrillator to the patient.

  • automated External Defibrillator accessibility is crucial for bystander defibrillation and survival a registry based study
    Resuscitation, 2019
    Co-Authors: Lena Karlsson, Carolina Malta Hansen, Mads Wissenberg, Steen Moller Hansen, Freddy K Lippert, Shahzleen Rajan, Kristian Kragholm, Sidsel Moller, K B Sondergaard, Gunnar H Gislason
    Abstract:

    Abstract Aims Optimization of automated External Defibrillator (AED) placement and accessibility are warranted. We examined the associations between AED accessibility, at the time of an out-of-hospital cardiac arrest (OHCA), bystander defibrillation, and 30-day survival, as well as AED coverage according to AED locations. Methods In this registry-based study we identified all OHCAs registered by mobile emergency care units in Copenhagen, Denmark (2008–2016). Information regarding registered AEDs (2007–2016) was retrieved from the nationwide Danish AED Network. We calculated AED coverage (AEDs located ≤200 m route distance from an OHCA) and, according to AED accessibility, the likelihoods of bystander defibrillation and 30-day survival. Results Of 2500 OHCAs, 22.6% (n = 566) were covered by a registered AED. At the time of OHCA, 50%, due to limited AED accessibility. Conclusions The chance of a bystander defibrillation was tripled, and 30-day survival nearly doubled, when the nearest AED was accessible, compared to inaccessible, at the time of OHCA, underscoring the importance of unhindered AED accessibility.

Timothy C Y Chan - One of the best experts on this subject based on the ideXlab platform.

Lance B Becker - One of the best experts on this subject based on the ideXlab platform.

  • automated External Defibrillator availability and cpr training among state police agencies in the united states
    Annals of Emergency Medicine, 2012
    Co-Authors: Lior M Hirsch, Sarah K Wallace, Kathryn Dipuppo L Tucker, Lance B Becker, Marion Leary, Benjamin S Abella
    Abstract:

    Study objective Access to automated External Defibrillators and cardiopulmonary resuscitation (CPR) training are key determinants of cardiac arrest survival. State police officers represent an important class of cardiac arrest first responders responsible for the large network of highways in the United States. We seek to determine accessibility of automated External Defibrillators and CPR training among state police agencies. Methods Contact was attempted with all 50 state police agencies by telephone and electronic mail. Officers at each agency were guided to complete a 15-question Internet-based survey. Descriptive statistics of the responses were performed. Results Attempts were made to contact all 50 states, and 46 surveys were completed (92% response rate). Most surveys were filled out by police leadership or individuals responsible for medical programs. The median agency size was 725 (interquartile range 482 to 1,485) state police officers, with 695 (interquartile range 450 to 1,100) patrol vehicles ("squad cars"). Thirty-three percent of responding agencies (15/46) reported equipping police vehicles with automated External Defibrillators. Of these, 53% (8/15) equipped less than half of their fleet with the devices. Regarding emergency medical training, 78% (35/45) of state police agencies reported training their officers in automated External Defibrillator usage, and 98% (44/45) reported training them in CPR. Conclusion One third of state police agencies surveyed equipped their vehicles with automated External Defibrillators, and among those that did, most equipped only a minority of their fleet. Most state police agencies reported training their officers in automated External Defibrillator usage and CPR. Increasing automated External Defibrillator deployment among state police represents an important opportunity to improve first responder preparedness for cardiac arrest care.

  • Human factors impact successful lay person automated External Defibrillator use during simulated cardiac arrest.
    Critical Care Medicine, 2004
    Co-Authors: Sergio Callejas, Ellen Demertsidis, Dawn Jorgenson, Anne Barry, Lance B Becker
    Abstract:

    Objective: With the dissemination of automated External Defibrillators in the community, there is increasing lay person use, along with less formal automated External Defibrillator training and retraining. Therefore, the ease of use factors related to the human-device interface may be vital for successful use. We sought to determine whether human factor differences would result in differences in parameters of successful or safe use by lay persons in the setting of simulated cardiac arrest. Methods: We measured parameters of successful and safe use with two automated External Defibrillator devices among two groups of volunteers, those trained with a brief video tape and those without any training (completely naive). Both devices (the Philips FR2 or the HS1) are used in public access Defibrillator settings. Volunteers entered a mock cardiac arrest scenario after randomization to either the naive (untrained) group or to a video-trained group. Results: Both the FR2 and HS1 were found to be completely safe when used by video-trained and by naive groups of participants, with no adverse events observed (total, n = 256). For both devices, video-trained participants demonstrated high rates of successful defibrillation in the simulated testing (86% for FR2 and 89% for HS1). With the FR2, video-trained participants were significantly more successful compared with naive, untrained participants (86% vs. 48% successful use; p

  • human factors impact successful lay person automated External Defibrillator use during simulated cardiac arrest
    Critical Care Medicine, 2004
    Co-Authors: Sergio Callejas, Ellen Demertsidis, Dawn Jorgenson, Anne Barry, Lance B Becker
    Abstract:

    OBJECTIVE: With the dissemination of automated External Defibrillators in the community, there is increasing lay person use, along with less formal automated External Defibrillator training and retraining. Therefore, the "ease of use" factors related to the human-device interface may be vital for successful use. We sought to determine whether human factor differences would result in differences in parameters of successful or safe use by lay persons in the setting of simulated cardiac arrest. METHODS: We measured parameters of successful and safe use with two automated External Defibrillator devices among two groups of volunteers, those trained with a brief video tape and those without any training (completely naive). Both devices (the Philips FR2 or the HS1) are used in public access Defibrillator settings. Volunteers entered a mock cardiac arrest scenario after randomization to either the naive (untrained) group or to a video-trained group. RESULTS: Both the FR2 and HS1 were found to be completely safe when used by video-trained and by naive groups of participants, with no adverse events observed (total, n = 256). For both devices, video-trained participants demonstrated high rates of successful defibrillation in the simulated testing (86% for FR2 and 89% for HS1). With the FR2, video-trained participants were significantly more successful compared with naive, untrained participants (86% vs. 48% successful use; p < .001). However, for the HS1, there was no significant difference in success rates for the video-trained vs. naive, untrained groups (89% vs. 87%; p = .79). CONCLUSIONS: Both devices are safe with either video-trained or naive users. The successful use of each device is high when participants view the training videotape designed for the device. An important difference in successful use was observed for naive users where the HS1 showed improved successful use compared with the FR2. Because defibrillation in the community may increasingly be attempted by lay persons whose training is remote or who have not been trained at all, the "naive" scenario may be increasingly relevant to automated External Defibrillator use. Collectively, these data support the notion that human factors associated with ease of use may play a critical factor in survival rates achieved by specific devices.

Peter J Kudenchuk - One of the best experts on this subject based on the ideXlab platform.

  • training seniors in the operation of an automated External Defibrillator a randomized trial comparing two training methods
    Annals of Emergency Medicine, 2001
    Co-Authors: Hendrika Meischke, Mickey S Eisenberg, Sheri Schaeffer, Peter J Kudenchuk
    Abstract:

    Abstract Study Objective: This study evaluated the differences in efficacy of 2 methods for training seniors in the use of an automated External Defibrillator (AED). We tested the hypothesis that each training method (face-to-face instruction compared with video-based instruction) would result in similar AED performance on a manikin. Methods: Two hundred ten seniors from various senior centers were randomized to receive face-to-face or video-based instruction on AED skills. Seniors were assessed individually and tested on the speed and quality of AED performance. We retested 177 of these initial trainees 3 months after initial training. Similar performance measures were assessed. Results: Although there were statistically significant differences between the 2 training methods in terms of average time to shock at both evaluations, the results in general demonstrate that there were no clinically meaningful distinctions (time differences of Conclusion: We believe that seniors can be trained equally well in AED performance with video-based self-instruction or face-to-face instruction. How to maintain acceptable AED performance skills over time remains a challenge. [Meischke HW, Rea T, Eisenberg MS, Schaeffer SM, Kudenchuk P. Training seniors in the operation of an automated External Defibrillator: A randomized trial comparing two training methods. Ann Emerg Med. September 2001;38:216-222.]

  • training seniors in the operation of an automated External Defibrillator a randomized trial comparing two training methods
    Annals of Emergency Medicine, 2001
    Co-Authors: Hendrika Meischke, Mickey S Eisenberg, Sheri Schaeffer, Peter J Kudenchuk
    Abstract:

    STUDY OBJECTIVE: This study evaluated the differences in efficacy of 2 methods for training seniors in the use of an automated External Defibrillator (AED). We tested the hypothesis that each training method (face-to-face instruction compared with video-based instruction) would result in similar AED performance on a manikin. METHODS: Two hundred ten seniors from various senior centers were randomized to receive face-to-face or video-based instruction on AED skills. Seniors were assessed individually and tested on the speed and quality of AED performance. We retested 177 of these initial trainees 3 months after initial training. Similar performance measures were assessed. RESULTS: Although there were statistically significant differences between the 2 training methods in terms of average time to shock at both evaluations, the results in general demonstrate that there were no clinically meaningful distinctions (time differences of <20 seconds) between the AED performance of seniors trained with a video and seniors trained in a face-to-face setting at the initial training or at the retention assessment. At the initial evaluation, overall performance was satisfactory, with greater than 98% trained with either method delivering a shock. However, at the 3-month follow-up, almost one fourth of trainees were not able to deliver a shock, and almost half were not able to correctly place the pads on the manikin. CONCLUSION: We believe that seniors can be trained equally well in AED performance with video-based self-instruction or face-to-face instruction. How to maintain acceptable AED performance skills over time remains a challenge.

  • training seniors in the operation of an automated External Defibrillator a randomized trial comparing two training methods
    Annals of Emergency Medicine, 2001
    Co-Authors: Hendrika Meischke, Mickey S Eisenberg, Sheri Schaeffer, Peter J Kudenchuk
    Abstract:

    Abstract Study Objective: This study evaluated the differences in efficacy of 2 methods for training seniors in the use of an automated External Defibrillator (AED). We tested the hypothesis that each training method (face-to-face instruction compared with video-based instruction) would result in similar AED performance on a manikin. Methods: Two hundred ten seniors from various senior centers were randomized to receive face-to-face or video-based instruction on AED skills. Seniors were assessed individually and tested on the speed and quality of AED performance. We retested 177 of these initial trainees 3 months after initial training. Similar performance measures were assessed. Results: Although there were statistically significant differences between the 2 training methods in terms of average time to shock at both evaluations, the results in general demonstrate that there were no clinically meaningful distinctions (time differences of Conclusion: We believe that seniors can be trained equally well in AED performance with video-based self-instruction or face-to-face instruction. How to maintain acceptable AED performance skills over time remains a challenge. [Meischke HW, Rea T, Eisenberg MS, Schaeffer SM, Kudenchuk P. Training seniors in the operation of an automated External Defibrillator: A randomized trial comparing two training methods. Ann Emerg Med. September 2001;38:216-222.]

Related terms

External Defibrillator - 15 days free trial to Access Experts & Abstracts