Long COVID-19 syndrome: association of cardiopulmonary impairment with a persistent platelet activation

Background

A considerable proportion of patients do not fully recover from COVID-19 infection and report symptoms that persist beyond the initial phase of infection: this condition is defined long-COVID-19 syndrome (LCS). LCS can involve lungs as well as several extrapulmonary organs, including the cardiovascular system. The risk and 1-year burden of cardiovascular diseases (CVD) is increased in COVID-19 survivors, even in subjects at low risk of CVD. Recently, we documented that acute COVID-19 infection induces altered platelet activation state characterized by a prothrombotic phenotype and by the formation of platelet-leukocyte aggregates (PLA), that may be involved in the pulmonary microthrombi found in autoptic specimens. No data are yet available on the contribution of platelet activation to residual pulmonary impairment and procoagulant potential in LCS patients.

Purpose

To study platelet activation status, microvesicle (MV) profile, platelet thrombin generation capacity (pTGC) in LCS patients enrolled at 6 months after resolution of the acute phase (6mo-FU), compared to acute COVID-19 infection patients.

Methods

6mo-FU COVID-19 patients (n=24) with established LCS were enrolled at Centro Cardiologico Monzino. Residual pulmonary impairment was assessed by Cardiopulmonary Exercise Testing (CPET) and 64-rows-CT scan evaluation. Platelet activation (P-selectin, Tissue Factor [TF] and PLA) and MV profile were assessed by flow cytometry; pTGC by calibrated automated thrombogram. 46 patients enrolled during acute COVID-19 infection and 46 healthy subjects (HS) were used for comparison.

Results

Dispnea in LCS patients was confirmed by CPET showing compromised alveolus-capillary membrane diffusion and residual pulmonary impairment. TF+-platelet and -MV levels were 3-fold (1.5% [1.2–2.9] vs 2.4% [1.6–5.7]) and 2-fold (217/μl [137–275] vs 435/μl [275–633]) lower at 6mo-FU compared to acute phase, being comparable to HS. pTGC behaved similarly. At 6mo-FU, the MV profile, in terms of total number and cell origin, returned to physiological levels. Conversely, although lower than that measured in acute phase, a 2.5-fold higher platelet P-selectin expression (6.9% [3–13.5] vs 11.7% [5.2–18.9]) and PLA formation (35.5% [27.4–46.8] vs 67.7% [45.7–85.3]) was observed at 6mo-FU compared to HS. Interestingly, a significant correlation between PLA formation and residual pulmonary impairment was observed (r=−0.423; p=0.02).

Conclusion

These data strengthen the hypothesis that the presence of PLA in the bloodstream, and thus also in the pulmonary microcirculation, may contribute to support pulmonary dysfunction still observed in LCS patients.

Funding Acknowledgement

Type of funding sources: Public grant(s) – National budget only. Main funding source(s): Italian Ministry of Health (Ricerca Corrente 2020 MPP COVID4)

Resources and outcome impact of routine availability of computed tomography perfusion

Funding Acknowledgements

Type of funding sources: None.

Background

Stress computed tomography perfusion (Stress-CTP) is a functional technique that can be added to coronary computed tomography angiography (cCTA) to improve the management of patients with suspected coronary artery disease (CAD).

Purpose

To determine the impact of routine availability of Stress-CTP added to cCTA in terms of downstream testing, radiation exposure and outcome in patients with high risk or known CAD.

Methods

Patients symptomatic for chest pain, known for CAD, with previous revascularization or with increased pre-test likelihood of CAD, referred for clinically indicated cCTA with Stress-CTP were prospectively enrolled. Data regarding evaluability, overall radiation exposure, invasive and non-invasive downstream testing, hospitalizations, revascularizations, major adverse cardiac events (MACE) as unstable angina, non-fatal myocardial infarction and cardiovascular death after index test were collected at follow-up.

Results

263 consecutive patients were prospectively enrolled (mean age: 65 ± 9 years; male: 79%), of which 162 (62%) had previous revascularization. The mean follow-up was 323 ± 175 days. cCTA and Stress-CTP were fully evaluable in 95% and 99%, respectively. Obstructive CAD and inducible ischaemia were found in 170 (65%) and 129 (49%) subjects, respectively. No significant difference was found between patients with presence or absence of perfusion defects in terms of downstream non-invasive testing (p: 0.229), while patients with inducible ischaemia had more downstream invasive testing, increased overall radiation exposure, more hospitalizations for cardiovascular reasons and revascularization (all endpoints with p: < 0.001). No differences were detected between patients with inducible ischaemia treated with revascularization after index test and patients without inducible ischaemia, even if with obstructive CAD, treated medically in terms of MACE.

Conclusions

Routine implementation of cCTA with Stress-CTP is associated with subsequent low rate of other non-invasive testing, low overall radiation exposure in case of negative Stress-CTP and good prognosis if clinical management is based on combined anatomical and functional information.

Education, Implementation, and Teams: 2020 International Consensus on Cardiopulmonary Resuscitation and Emergency Cardiovascular Care Science With Treatment Recommendations

For this 2020 International Consensus on Cardiopulmonary Resuscitation and Emergency Cardiovascular Care Science With Treatment Recommendations, the Education, Implementation, and Teams Task Force applied the population, intervention, comparator, outcome, study design, time frame format and performed 15 systematic reviews, applying the Grading of Recommendations, Assessment, Development, and Evaluation guidance. Furthermore, 4 scoping reviews and 7 evidence updates assessed any new evidence to determine if a change in any existing treatment recommendation was required. The topics covered included training for the treatment of opioid overdose; basic life support, including automated external defibrillator training; measuring implementation and performance in communities, and cardiac arrest centers; advanced life support training, including team and leadership training and rapid response teams; measuring cardiopulmonary resuscitation performance, feedback devices, and debriefing; and the use of social media to improve cardiopulmonary resuscitation application.

Adult Basic Life Support: 2020 International Consensus on Cardiopulmonary Resuscitation and Emergency Cardiovascular Care Science With Treatment Recommendations

This2020 International Consensus on Cardiopulmonary Resuscitation(CPR)and Emergency Cardiovascular Care Science With Treatment Recommendationson basic life support summarizes evidence evaluations performed for 22 topics that were prioritized by the Basic Life Support Task Force of the International Liaison Committee on Resuscitation. The evidence reviews include 16 systematic reviews, 5 scoping reviews, and 1 evidence update. Per agreement within the International Liaison Committee on Resuscitation, new or revised treatment recommendations were only made after a systematic review.

Systematic reviews were performed for the following topics: dispatch diagnosis of cardiac arrest, use of a firm surface for CPR, sequence for starting CPR (compressions-airway-breaths versus airway-breaths-compressions), CPR before calling for help, duration of CPR cycles, hand position during compressions, rhythm check timing, feedback for CPR quality, alternative techniques, public access automated external defibrillator programs, analysis of rhythm during chest compressions, CPR before defibrillation, removal of foreign-body airway obstruction, resuscitation care for suspected opioid-associated emergencies, drowning, and harm from CPR to victims not in cardiac arrest.

The topics that resulted in the most extensive task force discussions included CPR during transport, CPR before calling for help, resuscitation care for suspected opioid-associated emergencies, feedback for CPR quality, and analysis of rhythm during chest compressions. After discussion of the scoping reviews and the evidence update, the task force prioritized several topics for new systematic reviews.

Simulation and Clinical Competency in Undergraduate Nursing Programs: A Multisite Prospective Study

BACKGROUND

In prelicensure nursing education, there is a need to better understand the roles that simulation and traditional clinical instruction play in the development of clinical competence.

METHOD

A prospective cohort study was conducted across four prelicensure nursing programs. Four undergraduate nursing programs tested an intervention cohort with a redesign of the use of simulation, a redistribution of clinical hours, and an implementation of these new educational approaches into simulation experiences.

RESULTS

The final sample consisted of 271 control students and 315 intervention students who were assessed at the end of five clinical courses. There was no significant difference between the control and intervention groups on licensure examination pass rates and no uniform differences in clinical competency.

CONCLUSION

These findings suggest that the redistribution of clinical hours from traditional to simulation did not affect clinical competency or licensure examination results. Such redistributions have the potential to yield comparable results. [J Nurs Educ. 2019;58(10):561-568.].

A comparative study of video lecture versus video lecture and high fidelity simulation for training nurses on the delivery of targeted temperature management after cardiac arrest

INTRODUCTION

Targeted temperature management (TTM) is recommended for cardiac arrest patients. Successful implementation of a TTM protocol depends on the nurses' knowledge and skills. The study's aim was to compare the level of knowledge, psychomotor skills, confidence and satisfaction before, immediately after and at 6 weeks after training nurses on the delivery of TTM with video lecture versus video lecture and high fidelity simulation.

METHOD

Demographic variables were compared across treatment groups using t-tests and Chi-square tests. Change over 6 weeks after intervention was tested with mixed effects model.

RESULTS

Fifty-two registered nurses were enrolled. Knowledge test scores, the primary outcome, did not differ between the groups immediately after the training (beta = 3.80, SE = 3.47, p = .27), but there was a strong trend 6 weeks after the training in favor of simulation (beta = 7.93, SE = 3.88, p = .04). Skills were significantly better immediately after the training in the simulation group, but no different 6 weeks later. No difference in confidence was found at either post-test point. Simulation-trained nurses were more satisfied with their training at both post-testing points.

CONCLUSION

In this study of training approaches to TTM after cardiac arrest, nurses trained with video lecture and high fidelity simulation benefitted from this approach by maintaining their TTM knowledge longer.

2019 International Consensus on Cardiopulmonary Resuscitation and Emergency Cardiovascular Care Science With Treatment Recommendations: Summary From the Basic Life Support; Advanced Life Support; Pediatric Life Support; Neonatal Life Support; Education, Implementation, and Teams; and First Aid Task Forces

The International Liaison Committee on Resuscitation has initiated a continuous review of new, peer-reviewed, published cardiopulmonary resuscitation science. This is the third annual summary of the International Liaison Committee on Resuscitation International Consensus on Cardiopulmonary Resuscitation and Emergency Cardiovascular Care Science With Treatment Recommendations. It addresses the most recent published resuscitation evidence reviewed by International Liaison Committee on Resuscitation Task Force science experts. This summary addresses the role of cardiac arrest centers and dispatcher-assisted cardiopulmonary resuscitation, the role of extracorporeal cardiopulmonary resuscitation in adults and children, vasopressors in adults, advanced airway interventions in adults and children, targeted temperature management in children after cardiac arrest, initial oxygen concentration during resuscitation of newborns, and interventions for presyncope by first aid providers. Members from 6 International Liaison Committee on Resuscitation task forces have assessed, discussed, and debated the certainty of the evidence on the basis of the Grading of Recommendations, Assessment, Development, and Evaluation criteria, and their statements include consensus treatment recommendations. Insights into the deliberations of the task forces are provided in the Justification and Evidence to Decision Framework Highlights sections. The task forces also listed priority knowledge gaps for further research.

Chest compression components (rate, depth, chest wall recoil and leaning): A scoping review

AIM

To understand whether the science to date has focused on single or multiple chest compression components and identify the evidence related to chest compression components to determine the need for a full systematic review.

METHODS

This review was undertaken by members of the International Liaison Committee on Resuscitation and guided by a specific methodological framework and the Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for scoping reviews (PRISMA-ScR). Studies were eligible for inclusion if they were peer-reviewed human studies that examined the effect of different chest compression depths or rates, or chest wall or leaning, on physiological or clinical outcomes. The databases searched were MEDLINE complete, Embase, and Cochrane.

RESULTS

Twenty-two clinical studies were included in this review: five observational studies involving 879 patients examined both chest compression rate and depth; eight studies involving 14,285 patients examined chest compression rate only; seven studies involving 12001 patients examined chest compression depth only, and two studies involving 1848 patients examined chest wall recoil. No studies were identified that examined chest wall leaning. Three studies reported an inverse relationship between chest compression rate and depth.

CONCLUSION

This scoping review did not identify sufficient new evidence that would justify conducting new systematic reviews or reconsideration of current resuscitation guidelines. This scoping review does highlight significant gaps in the research evidence related to chest compression components, namely a lack of high-level evidence, paucity of studies of in-hospital cardiac arrest, and failure to account for the possibility of interactions between chest compression components.

Online Course Engagement Among Undergraduate Nursing Student Veterans

As a result of the Post-9/11 Veterans Assistance Act, academic programs aimed at assisting student veterans to become Registered Nurses (RN) are increasing. Accordingly, the number of nursing academic programs being offered online are increasing, yet little is known about online student veterans’ behaviors within learning management systems (LMS). This study examined the patterns of LMS use among student veterans who are pursuing a Bachelor of Science in Nursing (BSN) and the association between these behaviors and academic success. A retrospective associational analysis was conducted with data collected from students enrolled in courses in an online BSN program. The multilevel data consisted of 528 students who took one or more of twelve courses. The sample consisted of 23 veterans and 505 non-veteran BSN (non-VBSN) students in 3,793 course enrollments. Veterans were more likely to be male and were less likely to be classified as an in-state resident. Overall, the students engaged in their LMS early and most did not have missing or late assignments. The amount of online time spent in each course and the number of late assignment submissions significantly predicted course grades. No other significant predictors of graduation, discontinuation, or grades emerged. Notwithstanding some demographic differences, veterans appeared to be comparable to their non-VBSN counterparts overall, in terms of both academic performance and online engagement. These results indicate that the time students spend in their online courses can predict program success. The creation of an early-identification process for at-risk students who are not engaging in their LMS might have the potential to enhance educational outcomes even further.

2017 International Consensus on Cardiopulmonary Resuscitation and Emergency Cardiovascular Care Science With Treatment Recommendations Summary

The International Liaison Committee on Resuscitation has initiated a near-continuous review of cardiopulmonary resuscitation science that replaces the previous 5-year cyclic batch-and-queue approach process. This is the first of an annual series of International Consensus on Cardiopulmonary Resuscitation and Emergency Cardiovascular Care Science With Treatment Recommendations summary articles that will include the cardiopulmonary resuscitation science reviewed by the International Liaison Committee on Resuscitation in the previous year. The review this year includes 5 basic life support and 1 pediatric Consensuses on Cardiopulmonary Resuscitation and Emergency Cardiovascular Care Science With Treatment Recommendations. Each of these includes a summary of the science and its quality based on Grading of Recommendations, Assessment, Development, and Evaluation criteria and treatment recommendations. Insights into the deliberations of the International Liaison Committee on Resuscitation task force members are provided in Values and Preferences sections. Finally, the task force members have prioritized and listed the top 3 knowledge gaps for each population, intervention, comparator, and outcome question.

Demographic and Academic Factors Associated With Enrollment in Online MSN Programs

BACKGROUND

There is a need to better understand the demographic and academic characteristics of individuals enrolled in online Master of Science in Nursing (MSN) programs.

METHOD

This article reports a retrospective analysis of 4,079 students enrolled in one of three MSN programs: family nurse practitioner (FNP), nurse educator, and nursing administration. Demographic characteristics (i.e., gender, race, age) and academic variables (i.e., academic load, past undergraduate/graduate enrollment at the university) were examined for all enrollees.

RESULTS

Students in the MSN programs were younger than the national mean age for RNs, were primarily White, and were enrolled part time. The sample was composed of a disproportionately higher percentage of students from ethnic minority backgrounds than national RN profiles.

CONCLUSION

Study implications indicate that understanding the commonalities, differences, and educational experiences of students in on-campus and online MSN programs is important. The finding that almost 90% of online graduate nursing students enroll as part time has significant financial, family, and career implications. [J Nurs Educ. 2017;56(11):670-674.].

Engagement and learning in simulation: recommendations of the Simnovate Engaged Learning Domain Group

Background

Health professions education (HPE) is based on deliberate learning activities and clinical immersion to achieve clinical competence. Simulation is a tool that helps bridge the knowledge-to-action gap through deliberate learning. This paper considers how to optimally engage learners in simulation activities as part of HPE.

Methods

The Simnovate Engaged Learning Domain Group undertook 3 teleconferences to survey the current concepts regarding pervasive learning. Specific attention was paid to engagement in the learning process, with respect to fidelity, realism and emotions, and the use of narratives in HPE simulation.

Results

This paper found that while many types of simulation exist, the current ways to categorise the types of simulation do not sufficiently describe what a particular simulation will entail. This paper introduces a novel framework to describe simulation by deconstructing a simulation activity into 3 core characteristics (scope, modality and environment). Then, the paper discusses how engagement is at the heart of the learning process, but remained an understudied phenomenon with respect to HPE simulation. Building on the first part, a conceptual framework for engaged learning in HPE simulation was derived, with potential use across all HPE methods.

Discussion

The framework considers how the 3 characteristics of simulation interplay with the dimensions of fidelity (physical, conceptual and emotional), and how these can be conveyed by and articulated through beauty (as a proxy for efficiency) as coexisting factors to drive learner engagement. This framework leads to the translation of deliberately taught knowledge, skills and attitudes into clinical competence and subsequent performance.

Coexistence of axial spondyloarthritis and thromboangiitis obliterans in a young woman

A peculiar coexistence of axial spondyloarthritis and ischemia of the feet and the fourth finger of the left hand in a young woman, who was a heavy smoker, is discussed in this report. This picture was considered within the context of thromboangiitis obliterans. Positivity of anti-nuclear antibodies and mild elevation of inflammatory parameters were noted. Computed tomography angiograms of upper and lower limbs showed luminal narrowing and occlusion of the left humeral, left anterior/posterior tibial and right anterior tibial arteries. Daily iloprost perfusions were started, and smoking cessation was strongly recommended. Coldness and rest pain in the distal extremities improved within a few weeks. The possibility that spondyloarthritis might precede the clinical picture of thromboangiitis obliterans should be considered in heavy smokers.

A comparative analysis of demographic and academic success characteristics of on-line and on-campus RN-to-BSN students

Despite their proliferation, little is known about how registered nurse-to-bachelor of science in nursing (RN-to-BSN) students enrolled in on-line programs compare to those in on-campus programs. This article reports on a comparative analysis of 3,802 students (332 on-campus, 3,470 on-line) conducted to better understand characteristics and educational outcomes of individuals who select on-line learning options. Programs were compared for student demographic characteristics (gender, race, age, and prior degree status) and outcome variables (progression to graduation and time to completion). Students in the on-line program were significantly older than on-campus students, and significantly more Caucasian/White students were in the on-line program. There were no significant differences in gender between groups. Among only those students who had already graduated, on-campus students took significantly less time to graduate than on-line students and had a higher graduation rate. However, the rate of program discontinuation was similar in both groups, and most on-line students who had not graduated were still progressing in the program. Implications of these findings are that students enrolled in an on-line RN-to-BSN program specifically designed to provide them with flexible 5-week terms and substantive student supports can have similar educational outcomes.

Hospital cardiac arrest resuscitation practice in the United States: a nationally representative survey

BACKGROUND

In-hospital cardiac arrest (IHCA) outcomes vary widely between hospitals, even after adjusting for patient characteristics, suggesting variations in practice as a potential etiology. However, little is known about the standards of IHCA resuscitation practice among US hospitals.

OBJECTIVE

To describe current US hospital practices with regard to resuscitation care.

DESIGN

A nationally representative mail survey.

SETTING

A random sample of 1000 hospitals from the American Hospital Association database, stratified into 9 categories by hospital volume tertile and teaching status (major teaching, minor teaching, and nonteaching).

SUBJECTS

Surveys were addressed to each hospital's cardiopulmonary resuscitation (CPR) committee chair or chief medical/quality officer.

MEASUREMENTS

A 27-item questionnaire.

RESULTS

Responses were received from 439 hospitals with a similar distribution of admission volume and teaching status as the sample population (P = 0.50). Of the 270 (66%) hospitals with a CPR committee, 23 (10%) were chaired by a hospitalist. High frequency practices included having a rapid response team (91%) and standardizing defibrillators (88%). Low frequency practices included therapeutic hypothermia and use of CPR assist technology. Other practices such as debriefing (34%) and simulation training (62%) were more variable and correlated with the presence of a CPR committee and/or dedicated personnel for resuscitation quality improvement. The majority of hospitals (79%) reported at least 1 barrier to quality improvement, of which the lack of a resuscitation champion and inadequate training were the most common.

CONCLUSIONS

There is wide variability among hospitals and within practices for resuscitation care in the United States with opportunities for improvement.

Cardiopulmonary resuscitation quality: [corrected] improving cardiac resuscitation outcomes both inside and outside the hospital: a consensus statement from the American Heart Association

The "2010 American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care" increased the focus on methods to ensure that high-quality cardiopulmonary resuscitation (CPR) is performed in all resuscitation attempts. There are 5 critical components of high-quality CPR: minimize interruptions in chest compressions, provide compressions of adequate rate and depth, avoid leaning between compressions, and avoid excessive ventilation. Although it is clear that high-quality CPR is the primary component in influencing survival from cardiac arrest, there is considerable variation in monitoring, implementation, and quality improvement. As such, CPR quality varies widely between systems and locations. Victims often do not receive high-quality CPR because of provider ambiguity in prioritization of resuscitative efforts during an arrest. This ambiguity also impedes the development of optimal systems of care to increase survival from cardiac arrest. This consensus statement addresses the following key areas of CPR quality for the trained rescuer: metrics of CPR performance; monitoring, feedback, and integration of the patient's response to CPR; team-level logistics to ensure performance of high-quality CPR; and continuous quality improvement on provider, team, and systems levels. Clear definitions of metrics and methods to consistently deliver and improve the quality of CPR will narrow the gap between resuscitation science and the victims, both in and out of the hospital, and lay the foundation for further improvements in the future.

A systematic review of retention of adult advanced life support knowledge and skills in healthcare providers

OBJECTIVE

Advanced life support (ALS) guidelines are widely adopted for healthcare provider training with recommendations for retraining every two years or longer. This systematic review studies the retention of adult ALS knowledge and skills following completion of an ALS course in healthcare providers.

METHODS

We retrieved original articles using Medline, CINAHL, Cochrane Library, and PubMed, and reviewed reference citations to identify additional studies. We extracted data from included articles using a structured approach and organized outcomes by evaluation method, and knowledge and skills retention.

RESULTS

Among 336 articles retrieved, 11 papers were included. Most studies used multiple-choice questionnaires to evaluate knowledge retention and cardiac arrest simulation or other skills tests to evaluate skills retention. All studies reported variable rates of knowledge or skills deterioration over time, from 6 weeks to 2 years after training. Two studies noted retention of knowledge at 18 months and up to 2 years, and one reported skills retention at 3 months. Clinical experience, either prior to or after the courses, has a positive impact on retention of knowledge and skills.

CONCLUSION

There is a lack of large well-designed studies examining the retention of adult ALS knowledge and skills in healthcare providers. The available evidence suggests that ALS knowledge and skills decay by 6 months to 1 year after training and that skills decay faster than knowledge. Additional studies are needed to help provide evidence-based recommendations for assessment of current knowledge and skills and need for refresher training to maximize maintenance of ALS competency.

Working together, nurses can make a difference in resuscitation outcomes: an update on the American Heart Association's 2010 guidelines for cardiopulmonary resuscitation and emergency cardiovascular care

The International Liaison Committee on Resuscitation (ILCOR) was formed in 1992 to provide a forum for resuscitation organizations worldwide. According to its mission, ILCOR provides a mechanism by which international science and knowledge that are relevant to cardiopulmonary resuscitation (CPR) and emergency cardiovascular care (ECC) can be identified, reviewed, and evaluated. Every 5 years, based on a rigorous review of the published, peer-reviewed science, ILCOR develops a consensus on resuscitation science and carries that forward into internationally agreed-on treatment recommendations. As part of the 2010 evidence-evaluation process, ILCOR published an updated consensus on science and treatment recommendations (CoSTR). Based on the CoSTR, the American Heart Association (AHA) developed and disseminated guidelines for ECC and CPR. Nursing has unique responsibilities in the chain of survival. This article reviews the major elements of AHA's 2010 guidelines and discusses the critical role that nurses play in the development, dissemination, and implementation of resuscitation science. By making the connection in resuscitation science, nurses can help to save more lives.

Automated external defibrillators and survival after in-hospital cardiac arrest

CONTEXT

Automated external defibrillators (AEDs) improve survival from out-of-hospital cardiac arrests, but data on their effectiveness in hospitalized patients are limited.

OBJECTIVE

To evaluate the association between AED use and survival for in-hospital cardiac arrest.

DESIGN, SETTING, AND PATIENTS

Cohort study of 11,695 hospitalized patients with cardiac arrests between January 1, 2000, and August 26, 2008, at 204 US hospitals following the introduction of AEDs on general hospital wards.

MAIN OUTCOME MEASURE

Survival to hospital discharge by AED use, using multivariable hierarchical regression analyses to adjust for patient factors and hospital site.

RESULTS

Of 11,695 patients, 9616 (82.2%) had nonshockable rhythms (asystole and pulseless electrical activity) and 2079 (17.8%) had shockable rhythms (ventricular fibrillation and pulseless ventricular tachycardia). AEDs were used in 4515 patients (38.6%). Overall, 2117 patients (18.1%) survived to hospital discharge. Within the entire study population, AED use was associated with a lower rate of survival after in-hospital cardiac arrest compared with no AED use (16.3% vs 19.3%; adjusted rate ratio [RR], 0.85; 95% confidence interval [CI], 0.78-0.92; P < .001). Among cardiac arrests due to nonshockable rhythms, AED use was associated with lower survival (10.4% vs 15.4%; adjusted RR, 0.74; 95% CI, 0.65-0.83; P < .001). In contrast, for cardiac arrests due to shockable rhythms, AED use was not associated with survival (38.4% vs 39.8%; adjusted RR, 1.00; 95% CI, 0.88-1.13; P = .99). These patterns were consistently observed in both monitored and nonmonitored hospital units where AEDs were used, after matching patients to the individual units in each hospital where the cardiac arrest occurred, and with a propensity score analysis.

CONCLUSION

Among hospitalized patients with cardiac arrest, use of AEDs was not associated with improved survival.

Improving Workplace Safety Training Using a Self-Directed CPR-AED Learning Program

RESEARCH ABSTRACT Adequate training in cardiopulmonary resuscitation (CPR) and use of an automated external defibrillator (AED) is an important component of a workplace safety training program. Barriers to traditional in-classroom CPR-AED training programs include time away from work to complete training, logistics, learner discomfort over being in a classroom setting, and instructors who include information irrelevant to CPR. This study evaluated differences in CPR skills performance between employees who learned CPR using a self-directed learning (SDL) kit and employees who attended a traditional instructor-led course. The results suggest that the SDL kit yields learning outcomes comparable to those obtained with traditional instructor-led courses and is a more time-efficient tool for CPR-AED training. Furthermore, the SDL kit overcomes many of the barriers that keep individuals from learning CPR and appears to contribute to bystanders' confidently attempting resuscitation.

Improving Workplace Safety Training Using a Self-Directed CPR-AED Learning Program

Adequate training in cardiopulmonary resuscitation (CPR) and use of an automated external defibrillator (AED) is an important component of a workplace safety training program. Barriers to traditional in-classroom CPR-AED training programs include time away from work to complete training, logistics, learner discomfort over being in a classroom setting, and instructors who include information irrelevant to CPR. This study evaluated differences in CPR skills performance between employees who learned CPR using a self-directed learning (SDL) kit and employees who attended a traditional instructor-led course. The results suggest that the SDL kit yields learning outcomes comparable to those obtained with traditional instructor-led courses and is a more time-efficient tool for CPR-AED training. Furthermore, the SDL kit overcomes many of the barriers that keep individuals from learning CPR and appears to contribute to bystanders' confidently attempting resuscitation.

First documented rhythm and clinical outcome from in-hospital cardiac arrest among children and adults

CONTEXT

Cardiac arrests in adults are often due to ventricular fibrillation (VF) or pulseless ventricular tachycardia (VT), which are associated with better outcomes than asystole or pulseless electrical activity (PEA). Cardiac arrests in children are typically asystole or PEA.

OBJECTIVE

To test the hypothesis that children have relatively fewer in-hospital cardiac arrests associated with VF or pulseless VT compared with adults and, therefore, worse survival outcomes.

DESIGN, SETTING, AND PATIENTS

A prospective observational study from a multicenter registry (National Registry of Cardiopulmonary Resuscitation) of cardiac arrests in 253 US and Canadian hospitals between January 1, 2000, and March 30, 2004. A total of 36,902 adults (> or =18 years) and 880 children (<18 years) with pulseless cardiac arrests requiring chest compressions, defibrillation, or both were assessed. Cardiac arrests occurring in the delivery department, neonatal intensive care unit, and in the out-of-hospital setting were excluded.

MAIN OUTCOME MEASURE

Survival to hospital discharge.

RESULTS

The rate of survival to hospital discharge following pulseless cardiac arrest was higher in children than adults (27% [236/880] vs 18% [6485/36,902]; adjusted odds ratio [OR], 2.29; 95% confidence interval [CI], 1.95-2.68). Of these survivors, 65% (154/236) of children and 73% (4737/6485) of adults had good neurological outcome. The prevalence of VF or pulseless VT as the first documented pulseless rhythm was 14% (120/880) in children and 23% (8361/36,902) in adults (OR, 0.54; 95% CI, 0.44-0.65; P<.001). The prevalence of asystole was 40% (350) in children and 35% (13 024) in adults (OR, 1.20; 95% CI, 1.10-1.40; P = .006), whereas the prevalence of PEA was 24% (213) in children and 32% (11,963) in adults (OR, 0.67; 95% CI, 0.57-0.78; P<.001). After adjustment for differences in preexisting conditions, interventions in place at time of arrest, witnessed and/or monitored status, time to defibrillation of VF or pulseless VT, intensive care unit location of arrest, and duration of cardiopulmonary resuscitation, only first documented pulseless arrest rhythm remained significantly associated with differential survival to discharge (24% [135/563] in children vs 11% [2719/24,987] in adults with asystole and PEA; adjusted OR, 2.73; 95% CI, 2.23-3.32).

CONCLUSIONS

In this multicenter registry of in-hospital cardiac arrest, the first documented pulseless arrest rhythm was typically asystole or PEA in both children and adults. Because of better survival after asystole and PEA, children had better outcomes than adults despite fewer cardiac arrests due to VF or pulseless VT.