Quantifying Heuristic Bias: Anchoring,Availability, and Representativeness

Construct: Authors examined whether a new vignette-based instrument could isolate and quantify heuristic bias. Background: Heuristics are cognitive shortcuts that may introduce bias and contribute to error. There is no standardized instrument available to quantify heuristic bias in clinical decision making, limiting future study of educational interventions designed to improve calibration of medical decisions. This study presents validity data to support a vignette-based instrument quantifying bias due to the anchoring, availability, and representativeness heuristics. Approach: Participants completed questionnaires requiring assignment of probabilities to potential outcomes of medical and nonmedical scenarios. The instrument randomly presented scenarios in one of two versions: Version A, encouraging heuristic bias, and Version B, worded neutrally. The primary outcome was the difference in probability judgments for Version A versus Version B scenario options. Results: Of 167 participants recruited, 139 enrolled. Participants assigned significantly higher mean probability values to Version A scenario options (M = 9.56, SD = 3.75) than Version B (M = 8.98, SD = 3.76), t(1801) = 3.27, p = .001. This result remained significant analyzing medical scenarios alone (Version A, M = 9.41, SD = 3.92; Version B, M = 8.86, SD = 4.09), t(1204) = 2.36, p = .02. Analyzing medical scenarios by heuristic revealed a significant difference between Version A and B for availability (Version A, M = 6.52, SD = 3.32; Version B, M = 5.52, SD = 3.05), t(404) = 3.04, p = .003, and representativeness (Version A, M = 11.45, SD = 3.12; Version B, M = 10.67, SD = 3.71), t(396) = 2.28, p = .02, but not anchoring. Stratifying by training level, students maintained a significant difference between Version A and B medical scenarios (Version A, M = 9.83, SD = 3.75; Version B, M = 9.00, SD = 3.98), t(465) = 2.29, p = .02, but not residents or attendings. Stratifying by heuristic and training level, availability maintained significance for students (Version A, M = 7.28, SD = 3.46; Version B, M = 5.82, SD = 3.22), t(153) = 2.67, p = .008, and residents (Version A, M = 7.19, SD = 3.24; Version B, M = 5.56, SD = 2.72), t(77) = 2.32, p = .02, but not attendings. Conclusions: Authors developed an instrument to isolate and quantify bias produced by the availability and representativeness heuristics, and illustrated the utility of their instrument by demonstrating decreased heuristic bias within medical contexts at higher training levels.     

LUCAS compared to manual cardiopulmonary resuscitation is more effective during helicopter rescue—a prospective,randomized, cross-over manikin study

Objective

High-quality chest-compressions are of paramount importance for survival and good neurological outcome after cardiac arrest. However, even healthcare professionals have difficulty performing effective chest-compressions, and quality may be further reduced during transport. We compared a mechanical chest-compression device (Lund University Cardiac Assist System [LUCAS]; Jolife, Lund, Sweden) and manual chest-compressions in a simulated cardiopulmonary resuscitation scenario during helicopter rescue.

Methods

Twenty-five advanced life support–certified paramedics were enrolled for this prospective, randomized, crossover study. A modified Resusci Anne manikin was employed. Thirty minutes of training was allotted to both LUCAS and manual cardiopulmonary resuscitation (CPR). Thereafter, every candidate performed the same scenario twice, once with LUCAS and once with manual CPR. The primary outcome measure was the percentage of correct chest-compressions relative to total chest-compressions.

Results

LUCAS compared to manual chest-compressions were more frequently correct (99% vs 59%, P < .001) and were more often performed correctly regarding depth (99% vs 79%, P < .001), pressure point (100% vs 79%, P < .001) and pressure release (100% vs 97%, P = .001). Hands-off time was shorter in the LUCAS than in the manual group (46 vs 130 seconds, P < .001). Time until first defibrillation was longer in the LUCAS group (112 vs 49 seconds, P < .001).

Conclusions

During this simulated cardiac arrest scenario in helicopter rescue LUCAS compared to manual chest-compressions increased CPR quality and reduced hands-off time, but prolonged the time interval to the first defibrillation. Further clinical trials are warranted to confirm potential benefits of LUCAS CPR in helicopter rescue.     

Temperament Traits and Preference for Surgical or Nonsurgical Specialties in Year 6 Medical Students

Background: Personality traits may also be associated with preference for a particular specialty. However, little is known about the relationship between the surgical career preferences of medical students and their temperament traits. Purposes: The aim of the study was to explore the relationship between surgical or nonsurgical specialties and temperament in 6th-year medical students. Methods: The study included 409 students (283 women, 126 men) of the 6th year at the Medical University of Lodz. The subjects fulfilled a career preference and demographic questionnaire as well as the Formal Characteristics of Behaviour-Temperament Inventory by Zawadzki and Stelau. Results: The surgical specialty was preferred by 30.1% of the students and by 64.5% of the nonsurgical; 5.4% were undecided. The specialty preference of the medical students was associated with temperament traits. An analysis of variance showed differences in Emotional Reactivity, F(1, 380) = 3.888, p =.049, η² =.01; Endurance, F(1, 380) = 10.973, p =.001, η² =.028; and Briskness, F(1, 380) = 10.252, p =.001, η² =.026. Students preferring surgical specialty scored significantly higher on Endurance (M = 11.21, SD = 4.8) and Briskness (M = 16.54, SD = 2.82) scales than students choosing a nonsurgical specialty (M = 9.12, SD = 4.51) and (M = 15.19, SD = 3.21), respectively. Those preferring a surgical specialty scored lower on the Emotional Reactivity (M = 8.91, SD = 4.55) scale than students choosing nonsurgical specialty (M = 10.53, SD = 4.22). Conclusions: The findings suggest that certain temperament traits may be related to preference of surgical or nonsurgical specialties. This knowledge of temperament traits could be a useful tool in helping graduates choose a fulfilling career best suited to their psychological well-being and diagnosing work related issues in the medical profession.     

De-Escalation Training to Medical–Surgical Nurses in the Acute Care Setting

Violence is increasing on medical–surgical units as a “silent epidemic.” This quality improvement project employs a small non-experimental, single-group, pre- and post-test design (N = 11) to determine the effectiveness of de-escalation training on medical–surgical nurses' confidence levels when dealing with agitated patients. Regardless of age, education, or years of experience, scores improved for each question on Thackrey's (1987) Confidence in Coping with Patient Aggression Instrument after implementing Ten Domains of De-escalation by Richmond et al. (2012). A paired-sample two-tailed t-test significantly increased from Time 1 pre-test (M = 49.82, SD = 10.11) to Time 2 post-test (M = 72.82, SD = 14.41), t(10) = 4.46, p <.001. The mean increase was 23.00 [95% CI, 11.51–34.49]; d = 1.84 indicating a large effect size (Pilot, 2010). A sensitivity analysis (Wilcoxon Signed Rank Test) showed a median difference among the matched pairs with a significant increase in confidence levels post-training, z = ?2.847, p <.004. The median score increased from the pre-test (Md = 51) to the post-test scores (Md = 71) (Pallant, 2013).     

Implementation of a Mindfulness Intervention for Women in Treatment for Opioid Use Disorder and Its Effects on Depression Symptoms

Background: Many women in treatment for opioid use disorder (OUD) also experience mental health co-morbidities. Mindfulness intervention has demonstrated effectiveness for improving mental health in the general population, but has not been tested with female populations in OUD treatment. The purpose of this study was to describe characteristics associated with participation in a mindfulness intervention provided to women in treatment for OUD, and also to evaluate the effectiveness of a mindfulness intervention on depression symptoms.

Aims: To evaluate participation characteristics associated with a mindfulness intervention and to assess the impact of a mindfulness intervention on depression symptoms for women with OUD.

Methods: A secondary data analysis of a mindfulness intervention with women in treatment for OUD was accomplished. Bivariate analysis was conducted to determine any sociodemographic variables associated with intervention participation. Depression scores were assessed pre and post intervention using paired samples t tests for the intervention group (n?=?65) and the control group (n?=?8).

Results: A 45% of women in the study reported moderate to severe depression symptoms at baseline, and 63% reported high levels of childhood trauma. There was a significant decrease in depression scores (M?=?3.6 [1.2,6.1]) following the mindfulness intervention for the intervention group (t(64) = 3.1, p = .003). Participants entering the intervention group with moderate to severe depression scores experienced the most significant decrease in depression symptoms (M?=?6.6, SD = 13.5), (t(64) = ?2.1, p < .05).

Conclusions: Women in treatment for OUD experience high levels of depression symptoms and past trauma, and mindfulness is a feasible intervention for OUD populations which may improve depression symptoms.     

More than a cultural experience: Assessing the impact of a medical-surgical international clinical on nursing students' academic performance

A review of the extant literature suggests that there remains a dearth of evidence regarding the evaluation of well-defined outcomes related to international nursing clinical experiences. The purpose of this study was to explore the relationship between students' clinical experience (traditional versus international) and a number of academic outcomes including final medical-surgical course grades, performance on relevant Assessment Technologies Institute (ATI) proctored exams, and National Council Licensure Examination (NCLEX) pass rates. A non-experimental design was implemented using retrospective data obtained from a small university in the Midwest. Students complete a medical-surgical clinical in India during the interim of their third semester in the nursing program. Results of the t-tests show a statistically significant difference in final grades for Adult Health II theory when comparing students who completed a traditional clinical (M = 83.1, SD = 3.8) with those who completed an international clinical (M = 81.6, SD = 5.2); t(100) = 2.0, p = .043. The difference in mean scores for traditional clinical students (M = 70.3, SD = 6.6) versus international clinical students (M = 66.2, SD = 7.2) for the Adult Medical-Surgical proctored exam reached statistical significance, t(119) = 4.5, p ≤ .001. In contrast, there was no significant difference in means scores between the two groups with regard to scores on the Comprehensive Predictor proctored exam (traditional clinical, M = 76.1, SD = 5.9; international clinical, M = 75.2, SD = 6.4); t(121) = 1.0, p = .316. Finally, a chi square test of independence found that the relationship between clinical status and performance on NCLEX was not statistically significant, χ² (1, N = 197) = 0.132, p = .716. Further research is needed to examine the impact of international clinicals on a broader range of outcomes including academic, cultural competency, and clinical performance measures.     

CPR before defibrillation in out-of-hospital cardiac arrest: a randomized trial

Objective: Current resuscitation guidelines recommend that defibrillation be undertaken as soon as possible in patients suffering a cardiac arrest where the cardiac rhythm is either ventricular fibrillation (VF) or ventricular tachycardia (VT). Evidence from animal and clinical studies suggests that outcomes may be improved if a period of cardiopulmonary resuscitation (CPR) is given prior to defibrillation. The objective of this study was to determine if 90 seconds of CPR before defibrillation improved survival. Methods: Patients suffering non‐paramedic witnessed VF/VT cardiac arrest were randomized to receive either 90 seconds of CPR before defibrillation (treatment) or immediate defibrillation (control). The study was carried out in Perth, Western Australia between June 2000 and June 2002. The primary endpoint was survival to hospital discharge with secondary endpoints of return of spontaneous circulation (ROSC) and survival at 1 year. Results: A total of 256 patients underwent randomization. Baseline characteristics including response intervals were similar in both groups. Survival to hospital discharge in the CPR first group was 4.2% (5/119) compared with 5.1% (7/137) for the immediate defibrillation group (OR 0.81; 95%CI. 0.25–2.64). No difference in those achieving ROSC was observed between the groups (OR 1.16; 95% CI 0.49–2.80). Conclusion: Ninety seconds of CPR before defibrillation does not improve overall survival in patients suffering VF/VT cardiac arrests. Further studies to evaluate various aspects of this treatment strategy are required as published outcomes to date are inconclusive.     

Preliminary Psychometric Properties of the Verbal and Nonverbal Interaction Scale: An Observational Measure for Communication in Persons with Dementia

Little attention has been given to sociable/unsociable communication in persons with dementia despite the importance of these behaviors in maintaining engagement in marital relationships. An observational measure of verbal and nonverbal communication in persons with dementia (Verbal and Nonverbal Interaction Scale-CR) who were engaged in conversations with spouses was tested for reliability and validity. Married persons with dementia were video-recorded at home conversing with spouses over 10 weeks (N = 118 recordings). Reliability [inter-coder (.92), test-retest (r =.61-.77), internal consistency (α =.65 -.79)] were adequate. Following an intervention, the Verbal and Nonverbal Interaction Scale-CR predicted improved communication over 10 weeks. The ratio of sociable to unsociable communication improved by 4.46 points per session [β = 4.46, t(10) = 1.96, p =.039]. VNVIS-CR is recommended to describe sociable and unsociable communication in persons with dementia as they engage in conversations with spouses.     

Development,Evaluation, and Delivery of an Innovative National Undergraduate Surgical Workshop: Recognition and Management of the Acutely Unwell Surgical Patient

Problem: Recognition and management of acutely unwell surgical patients is an important skill to which medical students have little exposure. Intervention: We present the evaluation of a novel national surgical workshop that consisted of high-fidelity simulations, lectures, case demonstrations, case discussions, and a basic surgical skills tutorial. The high-fidelity simulations re-created genuine patient encounters and were used to facilitate the acquisition of knowledge and skill in the early recognition and management of acutely unwell surgical patients. Context: The optional workshop was designed for senior medical students and delivered by surgical trainees. Students were asked to complete a 12-item evaluation questionnaire and a 26-item multiple-choice question (MCQ) quiz, which assessed their confidence; self-perceived competence; and knowledge prior to, immediately following, and 8 weeks after the workshop. Pre- and postdata were compared using student's two-tailed t test. Outcome: A total of 66 medical students from 6 UK universities attended, the majority of whom enjoyed the workshop (98.3%, n = 59). Participants' confidence rating (scale = 1–5) in assessing an unwell surgical patient improved from a mean of 2.5 (n = 47) to 4.4 (n = 60). Confidence in commencing initial management improved from a mean of 2.7 (n = 47) to 4.1 (n = 59). Confidence and self-perceived competence across 12 domains improved significantly following the workshop, two-tailed unpaired t test, t(22) = 8.64, p <.0001, d = 3.68. MCQ scores immediately following the workshop were a statistically significant improvement on the preworkshop MCQ scores (n = 44), paired two-tailed t test, t(43) = 7.76, p <.0001, d = 2.37, and the improvement was sustained 8 weeks following the workshop (n = 18), paired two-tailed t test, t(17) = 3.34, p =.0039, d = 1.62. Lessons Learned: Feedback from students was very positive and clearly demonstrated that a workshop taught by surgical trainees improved medical students’ confidence, self-perceived competence, and knowledge in the assessment and management of acutely unwell surgical patients.     

Evaluating the Effectiveness of Dispatch-assisted Cardiopulmonary Resuscitation Instructions

Objectives: To determine the frequency of agonal breathing during cardiac arrest (CA), its impact on the ability of 9‐1‐1 dispatchers to identify CA, and the impact of dispatch‐assisted cardiopulmonary resuscitation (CPR) instructions on bystander CPR rates. Methods: A before‐after observational study enrolling out‐of‐hospital adult CA patients where resuscitation was attempted in a single city with basic life support with defibrillation/advanced life support tiered emergency medical services. Victim, caller, and system characteristics were measured during two successive nine‐month periods before (control group) and after (intervention group) the introduction of dispatch‐assisted CPR instructions. Results: There were 529 CAs between July 1, 2003, and December 31, 2004. Victim characteristics were similar in the control (n= 295) and intervention (n= 234) period; mean age was 68.3 years; 66.7% were male; 50.1% of CAs were witnessed; call‐to‐vehicle stop was 6 minutes, 37 seconds; ventricular fibrillation/ventricular tachycardia occurred in 29.9%; and the survival rate was 4.0%. Dispatchers identified 56.3% (95% confidence interval [CI] = 48.9% to 63.0%) of CA cases; agonal breathing was present in 37.0% (95% CI = 30.1% to 43.9%) of all CA cases and accounted for 50.0% (95% CI = 39.1% to 60.9%) of missed diagnoses. Callers provided ventilations in 17.2% and chest compressions in 8.3% of cases as a result of the intervention. Long time intervals were observed between call to diagnosis (2 minutes, 38 seconds) and during ventilation instructions (2 minutes, 5 seconds). Bystander CPR rates increased from 16.7% in the control phase to 26.4% in the intervention phase (absolute rate, 9.7%; 95% CI = 8.5% to 11.3%; p = 0.006). Conclusions: This trial demonstrates an increase in bystander CPR rate after the introduction of dispatch‐assisted CPR. Agonal breathing occurred frequently and had a negative impact on the recognition of CA. There were long time intervals between call initiation and diagnosis of CA and during mouth‐to‐mouth ventilation instructions.     

Continuous Quality Improvement Efforts Increase Survival with Favorable Neurologic Outcome after Out-of-hospital Cardiac Arrest

Objective: To assess system-wide implementation of specific therapies focused on perfusion during cardiopulmonary resuscitation (CPR) and cerebral recovery after Return of Spontaneous Circulation (ROSC). Methods: Before and after retrospective analysis of an out-of-hospital cardiac arrest database. Implementation trial in the urban/suburban community of Alameda County, California, USA, population 1.6 million, from November 2009–December 2012. Adult patients with non-traumatic out-of-hospital cardiac arrest (OHCA) who received CPR and/or defibrillation. The impedance threshold device was used throughout this study and there was an increased use of mechanical CPR (mCPR) and in-hospital therapeutic hypothermia (HTH). Results: Rates of ROSC, survival to hospital discharge and Cerebral Performance Category (CPC) scores were compared using univariate and multivariable analyses. A total of 2,926 adult non-traumatic patients with OHCA received CPR during the study period. From 2009–2011 to 2012, there was an increase in ROSC from 29.0% to 34.4% (p = 0.003) and a non-significant increase in hospital discharge from 10.2% to 12.0% (p = 0.16). There was a 76% relative increase in survival with favorable neurologic function between the two periods, as determined by CPC ≤ 2, from 4.5% to 7.9% (unadjusted OR = 1.80; CI = 1.31, 2.48; p < 0.001). After adjusting for witnessed arrest, bystander CPR, initial rhythm (VT/VF vs. others), placement of an advanced airway, EMS response time, drugs administered, and age, the OR was 1.61 (1.10, 2.36; p = 0.015). Using a stepwise multivariable logistic regression model, the independent predictors of CPC ≤ 2 were 2012 (vs. 2009–2011; p = 0.022), witnessed arrest (p < 0.001), initial rhythm VT/VF (p < 0.001), and advanced airway (inverse association p < 0.001). Additional analyses of the three prescribed therapies, separately and in combination, demonstrated that for those patients admitted to the hospital, mCPR with HTH had the biggest impact on survival to hospital discharge with CPC ≤ 2. Conclusions: Specific therapies within a system of care (mCPR, HTH), developed to enhance circulation during CPR and cerebral recovery after ROSC, significantly improved survival by 74% with favorable neurologic function following OHCA.     

Patient Active Time During Therapy Sessions in Postacute Rehabilitation: Development and Validation of a New Measure

ABSTRACT

Background and purpose: The accurate measurement of therapy intensity in postacute rehabilitation is important for research to improve outcomes in this setting. We developed and validated a measure of Patient Active Time during physical (PT) and occupational therapy (OT) sessions, as a proxy for therapy intensity. Methods: This measurement validity study was carried out with 26 older adults admitted to a skilled nursing facility (SNF) for postacute rehabilitation with a variety of main underlying diagnoses, including hip fracture, cardiovascular diseases, stroke, and others. They were participants in a randomized controlled trial that compared an experimental high-intensity therapy to standard-of-care therapy. Patient Active Time was observed by research raters as the total number of minutes that a patient was actively engaging in therapeutic activities during PT and OT sessions. This was compared to patient movement (actigraphy) quantified during some of the same PT/OT sessions using data from three-dimensional accelerometers worn on the patient's extremities. Results: Activity measures were collected for 136 therapy sessions. Patient Active Time had high interrater reliability in both PT (r = 0.995, p < 0.001) and OT (r = 0.95, p = 0.012). Active time was significantly correlated with actigraphy in both PT (r = 0.73, p < 0.001) and OT (r = 0.60, p < 0.001) and discriminated between a high-intensity experimental condition and standard of care rehabilitation: in PT, 47.0 ± 13.5 min versus 16.7 ± 10.1 min (p < 0.001) and in OT, 46.2 ± 15.2 versus 27.7 ± 6.6 min (p < 0.001). Conclusions: Systematic observation of Patient Active Time provides an objective, reliable, and valid index of physical activity during PT and OT treatment sessions that has utility as a real-world alternative to the measurement of treatment intensity. This measure could be used to differentiate higher from lower therapy treatment intensity and to help determine the optimal level of active therapy time for patients in postacute and other settings.     

The effectiveness of cardiopulmonary resuscitation instruction: animation versus dispatcher through a cellular phone

INTRODUCTION: We developed a cardiopulmonary resuscitation (CPR) instruction programme using motion capture animation integrated into cellular phones. We compared the effectiveness of animation-assisted CPR instruction with dispatcher-assisted instruction in participants with no previous CPR training. METHODS: This study was a single blind cluster randomized trial. Participants were allocated to either animation-assisted CPR (AA-CPR; 8 clusters, 44 participants) group or dispatcher-assisted CPR (DA-CPR; 8 clusters, 41 participants). The overall performance and time of each step of CPR cycle were recorded on a checklist by 3 assessors. The objective performances were evaluated using the Resusci Anne SkillReporter Manikin. Differences between the groups were compared using an independent t-test adjusted for the effect of clustering. RESULTS: The AA-CPR group had a significantly better checklist score (p<0.001) and time to completion of 1 CPR cycle (p<0.001) than the DA-CPR group. In an objective assessment of psychomotor skill, the AA-CPR group demonstrated more accurate hand positioning (68.8+/-3.6%, p=0.033) and compression rate (72.4+/-3.7%, p=0.015) than DA-CPR group. However, the accuracy of compression depth (p=0.400), ventilation volume (p=0.977) and flow rate (p=0.627) were below 30% in both groups. CONCLUSION: Audiovisual animated CPR instruction through a cellular phone resulted in better scores in checklist assessment and time interval compliance in participants without CPR skill compared to those who received CPR instructions from a dispatcher; however, the accuracy of important psychomotor skill measures was unsatisfactory in both groups.     

Supreme Laryngeal Mask Airway achieves faster insertion times than Classic LMA during chest compressions in manikins

Background

According to the 2010 European Resuscitation Council guidelines on cardiopulmonary resuscitation (CPR), one can appreciate that the classic laryngeal mask airway (CLMA) is acceptable as an alternative airway device to endotracheal intubation for airway management in cardiac arrest victims.

Objective

To compare a relatively new supraglottic airway device, the Supreme Laryngeal Mask Airway (SLMA), with the CLMA in a cardiac arrest scenario.

Methods

Fifty healthcare professionals inexperienced in advanced airway management attempted to insert both airway devices in a manikin in 2 scenarios: in the first, chest compressions were not performed (non-CPR scenario), and in the second, uninterrupted chest compressions were performed (CPR scenario). The primary end points were insertion time and success rate at first attempt. The level of self-confidence of each participant was recorded.

Results

SLMA achieves faster insertion times both in the non-CPR (SLMA: 10.4 ± 2.7 seconds vs CLMA: 13.4 ± 3.2 seconds, P < .05) and in the CPR scenario (SLMA: 9.9 ± 2.0 seconds Vs CLMA: 11.9 ± 2.3 seconds, P < .05). The difference between first attempt success rates was not statistically significant both in the non-CPR (SLMA: 96% vs CLMA: 90%, P = .18) and in the CPR scenario (SLMA: 98% vs CLMA: 94%, P = .32). The participants are more self-confident using SLMA instead of CLMA (P < .001) and 94% of them would prefer SLMA for future use.

Conclusion

SLMA could be a useful alternative to CLMA during CPR in the hands of healthcare professionals with minimal experience in airway management.     

Impact of Family History of Substance Abuse on Admission Opioid Dose,Depressive Symptoms,and Pain Catastrophizing in Patients with Chronic Pain

The objectives of this study were to examine association between a family history of substance abuse and admission morphine equivalent dose, depression and pain catastrophizing screening scores, as well as reported personal history of substance use. The retrospective research was completed in an interdisciplinary three-week pain rehabilitation center. The subject cohort included admissions from January through December 2014 with 351 datasets for family history of substance abuse and oral morphine equivalency and 341 for depression, pain catastrophizing and use of substances. Outcome measures included admission self-reported data on family history of substance abuse and past and current substance use, admission morphine equivalency dose, and scores on the Center for Epidemiologic Studies-Depression Scale and the Pain Catastrophizing Scale. One hundred forty-seven patients were using opioid medications on admission and those with a positive family history of substance abuse had an oral morphine equivalency (M = 92.12, SD = 95.32) compared to a negative history (M = 80.34, SD = 64.86); the difference was not statistically significant, t (120.01) =.87, p = .39. Patients with a positive family history reported higher levels of both depression, t (327.40) = 3.15, p = .002 and pain catastrophizing, t (338) = 2.76, p = .01. Those with a positive family history endorsed greater frequency of past alcohol use χ² (1, N = 326) = 6.67, p = 0.1 and marijuana use χ² (1, N = 341) = 4.23, p = .04 and past χ² (1, N = 329) = 9.90, p = .002 and current tobacco use χ² (1, N = 327) = 8.81, p = .003. Use of family history of substance abuse information may help provide data for multimodal treatments of chronic non-cancer-pain. The findings from this study can be used to guide future research.     

The Impact of a Recovery-Based Program on Veterans with Long Inpatient Psychiatric Stays

The study's purpose was to report outcomes for 47 veterans who participated in a recovery-based psychiatric rehabilitation program. On the whole, these veterans had a history of long continuous hospital stays, ranging from 6 months to less than 45 years. The discharged veterans (15, 32%) experienced statistically greater community tenure (paired t (28) = ?4.158, p < 0.0001, two-tailed) and decrease in number of admissions (pre M = 2.7; post M = 1.9) after participation. While community tenure and number of admissions remained the same for non-discharged veterans, increased positive staff-veteran interactions were reported by staff.     

Animation-assisted CPRII program as a reminder tool in achieving effective one-person-CPR performance

Objective

The objective of this study is to compare the skill retention of two groups of lay persons, six months after their last CPR training. The intervention group was provided with animation-assisted CPRII (AA-CPRII) instruction on their cellular phones, and the control group had nothing but what they learned from their previous training.

Methods

This study was a single blind randomized controlled trial. The participants’ last CPR trainings were held at least six months ago. We revised our CPR animation for on-site CPR instruction content emphasizing importance of chest compression. Participants were randomized into two groups, the AA-CPRII group (n = 42) and the control group (n = 38). Both groups performed three cycles of CPR and their performances were video recorded. These video clips were assessed by three evaluators using a checklist. The psychomotor skills were evaluated using the Resusci^®Anne SkillReporter™.

Results

Using the 30-point scoring checklist, the AA-CPRII group had a significantly better score compared to the control group (p < 0.001). Psychomotor skills evaluated with the AA-CPRII group demonstrated better performance in hand positioning (p = 0.025), compression depth (p = 0.035) and compression rate (p < 0.001) than the control group.

Conclusion

The AA-CPRII group resulted in better checklist scores, including chest compression rate, depth and hand positioning. Animation-assisted CPR could be used as a reminder tool in achieving effective one-person-CPR performance. By installing the CPR instruction on cellular phones and having taught them CPR with it during the training enabled participants to perform better CPR.     

Using a Mobile Phone Application Versus Telephone Assistance During Cardiopulmonary Resuscitation: A Randomized Comparative Study

IntroductionIn recent years, the way CPR instructions are given has changed because of the development of new technology that allows bystanders who witness a cardiac arrest to be guided in performing CPR. This study aimed to compare the effectiveness of using a mobile phone application (app) versus telephone operator assistance in performing cardiopulmonary resuscitation (CPR) techniques in simulated settings.MethodsA comparative study was performed with 2 intervention groups: (1) mobile phone app and (2) telephone assistance. A total of 128 students participated and were distributed randomly into each intervention group. A CPR observation checklist and standard CPR quality parameter measurements were used for data collection.ResultsThe group that used the app obtained better results than the group that had telephone assistance on 5 items during CPR observation: checking if the area is secure (X²(1) = 26.81; P < 0.05), asking for help (X²(1) = 66.07; P < 0.05), opening of airways (X²(1) = 12.03; P < 0.05), checking for breathing (X²(1) = 6.10; P < 0.05), and contacting emergency services (X²(1) = 12.41; P < 0.05). Regarding the skill level of CPR, no statistically significant differences were found when comparing the 2 intervention groups (X²(1) = 0.91; P = 0.33). As for the parameters measured, there were only statistically significant differences found in the item compression fraction (U = 1,593.00; Z = −2.16; P < 0.05), with the group that used the app obtaining better results.DiscussionBetter outcomes were observed in recognizing if the area was safe, asking for help, opening up the airways, checking for breathing, and calling emergency services in the mobile phone app group. However, the results indicated that there were no differences in the CPR parameters, except compression fraction, when the app was used as opposed to being guided by telephone.     

Minor Variations in Electrode Pad Placement Impact Defibrillation Success

Defibrillation is essential for resuscitating patients with ventricular fibrillation (VF), but shocks often fail to defibrillate. We hypothesized that small variations in pad placement affect shock success, and that defibrillation waveform and shock dose could compensate for suboptimal pad placement. In 10 swine experiments, electrode pads were attached at 3 adjacent anterolateral positions, less than 3 centimeters apart. At each position, 24 episodes of VF were induced and shocked, 8 episodes for each of 3 defibrillation therapies. This resulted in 9 tested combinations of pad position and defibrillation therapy, with 80 episodes of VF for each combination. An episode consisted of 15 seconds of untreated VF, followed by a first shock and, if necessary, a repeat shock. Episodes were separated by four minutes of recovery. Both electrode pad position and therapy order were randomized by experiment. Primary outcome was defined as successful VF termination after the first shock; secondary outcome was the cumulative success of the first and second shocks. First shock efficacy varied widely across the 9 tested combinations of pad position and defibrillation therapy, ranging from 11.3% to 86.3%. When grouped by therapy, first shock efficacy varied significantly between the 3 pad positions: 38.3%, 48.3%, 36.7% (p = 0.02, ANOVA), and, when grouped by pad position, it varied significantly between therapies: 15.0%, 32.5%, 75.8% (p < 0.001, ANOVA). Cumulative 2-shock success varied significantly with therapy (p < 0.001, ANOVA) but not with pad position (p = 0.30, ANOVA). The lowest first shock success was at one position in 6 of 10 animals, at another position in 4 of 10 animals, and never at the third position. Small variations in pad placement can significantly affect defibrillation shock efficacy. However, anatomical variation between individuals and the challenging conditions of real-world resuscitations make optimal pad placement impractical. Suboptimal pad placement can be overcome with defibrillation waveform and shock dose.