RESUMEN
We conducted a retrospective cohort study to assess the effect vaccination with the live-attenuated recombinant vesicular stomatitis virus-Zaire Ebola virus vaccine had on deaths among patients who had laboratory-confirmed Ebola virus disease (EVD). We included EVD-positive patients coming to an Ebola Treatment Center in eastern Democratic Republic of the Congo during 2018-2020. Overall, 25% of patients vaccinated before symptom onset died compared with 63% of unvaccinated patients. Vaccinated patients reported fewer EVD-associated symptoms, had reduced time to clearance of viral load, and had reduced length of stay at the Ebola Treatment Center. After controlling for confounders, vaccination was strongly associated with decreased deaths. Reduction in deaths was not affected by timing of vaccination before or after EVD exposure. These findings support use of preexposure and postexposure recombinant vesicular stomatitis virus-Zaire Ebola virus vaccine as an intervention associated with improved death rates, illness, and recovery time among patients with EVD.
Asunto(s)
Vacunas contra el Virus del Ébola , Ebolavirus , Fiebre Hemorrágica Ebola , Estomatitis Vesicular , Animales , República Democrática del Congo/epidemiología , Ebolavirus/genética , Fiebre Hemorrágica Ebola/diagnóstico , Fiebre Hemorrágica Ebola/epidemiología , Fiebre Hemorrágica Ebola/prevención & control , Humanos , Estudios Retrospectivos , Vacunación , Vacunas Atenuadas , Estomatitis Vesicular/inducido químicamente , Vesiculovirus/genéticaRESUMEN
Garissa county, Kenya is a geographically large county with a mobile pastoralist population that has developed a method for emergency medical services (EMS) coordination using the WhatsApp communication platform. This work was based on a site visit, to better understand and describe the current operations, strengths, and weaknesses of the EMS communication system in Garissa. The use of WhatsApp in Garissa county seems to work well in the local context and has the potential to serve as a cost-effective solution for other EMS systems in Kenya, Africa, and other LMICs.
RESUMEN
BACKGROUND: Interpersonal violence is a significant contributor to global morbidity, and affects young adults, particularly males. In Kenya, injuries, including those from interpersonal violence, are a leading cause of emergency department (ED) visits. OBJECTIVE: This study aims to evaluate the frequency, demographics, and types of injuries caused by interpersonal and intimate partner violence among patients presenting to the Kenyatta National Hospital (KNH) ED in Nairobi, Kenya. METHODS: This was a prospective cross-sectional study among injured adult patients presenting to the KNH ED. RESULTS: Of 665 enrolled patients, 82% identified as male and the median age was 30 years. Among enrollees, 257 (39%) reported ever having experienced physical, sexual, and/or emotional violence. Seventy-one patients reported a history of intimate partner violence; more than half had experienced intimate partner violence within the past 12 months. CONCLUSIONS: Research on interpersonal injuries in ED settings is lacking, but data from a single Kenyan ED reveals a significant portion of injured patients with a history of interpersonal and intimate partner violence.
Asunto(s)
Servicio de Urgencia en Hospital , Violencia de Pareja , Heridas y Lesiones , Humanos , Kenia/epidemiología , Masculino , Femenino , Adulto , Violencia de Pareja/estadística & datos numéricos , Violencia de Pareja/psicología , Estudios Transversales , Heridas y Lesiones/epidemiología , Servicio de Urgencia en Hospital/estadística & datos numéricos , Estudios Prospectivos , Adulto Joven , Persona de Mediana Edad , AdolescenteRESUMEN
OBJECTIVE: The objective was to identify the highest quality global emergency medicine (GEM) research published in 2022. The top articles are compiled in a comprehensive list of all the year's GEM articles and narrative summaries are performed on those included. METHODS: A systematic PubMed search was conducted to identify all GEM articles published in 2022 and included a manual supplemental screen of 11 organizational websites for gray literature (GRAY). A team of trained reviewers and editors screened all identified titles and abstracts, based on three case definition categories: disaster and humanitarian response (DHR), emergency care in resource-limited settings (ECRLS), and emergency medicine development (EMD). Articles meeting these definitions were independently scored by two reviewers using rubrics for original research (OR), review (RE) articles, and GRAY. Articles that scored in the top 5% from each category as well as the overall top 5% of articles were included for narrative summary. RESULTS: The 2022 search identified 58,510 articles in the main review, of which 524 articles screened in for scoring, respectively, 30% and 18% increases from last year. After duplicates were removed, 36 articles were included for narrative summary. The GRAY search identified 7755 articles, of which 33 were scored and one was included for narrative summary. ECRLS remained the largest category (27; 73%), followed by DHR (7; 19%) and EMD (3; 8%). OR articles remained more common than RE articles (64% vs. 36%). CONCLUSIONS: The waning of the COVID-19 pandemic has not affected the continued growth in GEM literature. Articles related to prehospital care, mental health and resilience among patients and health care workers, streamlining pediatric infectious disease care, and disaster preparedness were featured in this year's review. The continued lack of EMD studies despite the global growth of GEM highlights a need for more scholarly dissemination of best practices.
Asunto(s)
Desastres , Servicios Médicos de Urgencia , Medicina de Emergencia , Niño , Humanos , Pandemias , Salud GlobalRESUMEN
House fires can lead to cyanide poisoning and an associated elevated serum lactate level. Because of delays in obtaining serum cyanide levels, clinical symptoms and serum lactate are often used to guide clinical decision making and antidote administration. However, as this case report identifies, lower levels of serum lactate may in fact correlate with higher levels of serum cyanide that could benefit from treatment with an antidote.
Asunto(s)
Cianuros , Ácido Láctico , Lesión por Inhalación de Humo , Humanos , Antídotos/uso terapéutico , Cianuros/envenenamiento , Ácido Láctico/uso terapéutico , Lesión por Inhalación de Humo/tratamiento farmacológicoRESUMEN
BACKGROUND: Road traffic injuries are a large and growing cause of morbidity and mortality in low- and middle-income countries, especially in Africa. Systematic data collection for traffic incidents in Kenya is lacking and in many low- and middle-income countries available data sources are disparate or missing altogether. Many Kenyans use social media platforms, including Twitter; many road traffic incidents are publicly reported on the microblog platform. This study is a prospective cohort analysis of all tweets related to road traffic incidents in Kenya over a 24-month period (February 2019 to January 2021). RESULTS: A substantial number of unique road incidents (3882) from across Kenya were recorded during the 24-month study period. The details available for each incident are widely variable, as reported and posted on Twitter. Particular times of day and days of the week had a higher incidence of reported road traffic incidents. A total of 2043 injuries and 1503 fatalities were recorded. CONCLUSIONS: Twitter and other digital social media platforms can provide a novel source for road traffic incident and injury data in a low- and middle-income country. The data collected allows for the potential identification of local and national trends and provides opportunities to advocate for improved roadways and health systems for the emergent care from road traffic incidents and associated traumatic injuries.
RESUMEN
Novel disease emergence with associated outbreaks and pandemics have become increasingly common in the last several decades. For centuries, people have utilized various forms of collaboration to control outbreaks. Modern global health frameworks now play a central role in guiding a targeted and coordinated international disease response; recent pandemics have shown that such systems have both strengths and vulnerabilities. This report assesses the existing global health infrastructure for pandemic response and discusses how the World Health Organization (WHO) and global health infrastructure has responded to recent public health threats.
Asunto(s)
COVID-19 , Pandemias , Salud Global , Humanos , Pandemias/prevención & control , Salud Pública , Organización Mundial de la SaludRESUMEN
Introduction: Trauma is a leading cause of morbidity and mortality in Kenya. In many countries, substance use is common among patients presenting with injuries to an emergency center (EC). Objective: To describe the epidemiology of self-reported substance use among adult injured patients seeking ED care in Nairobi, Kenya. Methods: This prospective cross-sectional study, assessed patients presenting with injuries to the Kenyatta National Hospital ED in Nairobi, Kenya from March through June of 2021. Data on substance use, injury characteristics and ED disposition were collected. Substances of interest were alcohol, stimulants, marijuana, and opiates. The Alcohol Use Disorders Identification Test-Concise (AUDIT-C) tool was used to characterize hazardous alcohol use. Results: A total of 1,282 patients were screened for participation, of which 646 were enrolled. Among participants, 322 (49.8%) reported substance use in the past month (AUDIT-C positive, stimulants, opiates, and/or marijuana). Hazardous alcohol use was reported by 271 (42.0%) patients who screened positive with AUDIT-C. Polysubstance use, (≥2 substances) was reported by 87 participants in the past month. Median time from injury to ED arrival was 13.1 h for all enrolees, and this number was significantly higher among substance users (median 15.4 h, IQR 5.5 - 25.5; p = 0.029). Conclusions: In the population studied, reported substance use was common with a substantial proportion of injured persons screening positive for hazardous alcohol use. Those with substance use had later presentations for injury care. These data suggest that ED programming for substance use disorder screening and care linkage could be impactful in the study setting.
RESUMEN
OBJECTIVE: The specialty of emergency medicine and recognition of the need for emergency care continue to grow globally. The specialty and emergency care systems vary according to context. This study characterizes the specialty of emergency medicine around the world, trends according to region and income level, and challenges for the specialty. METHODS: We distributed a 56-question electronic survey to all members of the American College of Emergency Physicians International Ambassador Program between March 2019 and January 2020. The Ambassador Program leadership designed the survey covering specialty recognition, workforce, system components, and emergency medicine training. We analyzed results by country and in aggregate using SAS software (SAS Institute Inc). We tested the associations between World Bank income group and number of emergency medicine residency-trained physicians (RTPs) and emergency medicine specialty recognition using non-parametric Fisher's exact testing. We performed inductive coding of qualitative data for themes. RESULTS: Sixty-three out of 78 countries' teams (80%) responded to the survey. Response countries represented roughly 67% of the world's population and included countries in all World Bank income groups. Fifty-four countries (86%) recognized emergency medicine as a specialty. Ten (16%) had no emergency medicine residency programs, and 19 (30%) had only one. Eight (11%) reported having no emergency medicine RTPs and 30 (48%) had <100. Fifty-seven (90%) had an emergency medical services (EMS) system, and 52 (83%) had an emergency access number. Higher country income was associated with a higher number of emergency medicine RTPs per capita (P = 0.02). Only 6 countries (8%) had >5 emergency medicine RTPs per 100,000 population, all high income. All 5 low-income countries in the sample had <2 emergency medicine RTPs per 100,000 population. Challenges in emergency medicine development included lack of resources (38%), burnout and poor working conditions (31%), and low salaries (23%). CONCLUSIONS: Most surveyed countries recognized emergency medicine as a specialty. However, numbers of emergency medicine RTPs were small, particularly in lower income countries. Most surveyed countries reported an EMS system and emergency access number. Lack of resources, burnout, and poor pay were major threats to emergency medicine growth.
RESUMEN
Kenya is a rapidly developing country with a growing economy and evolving health care system. In the decade since the last publication on the state of emergency care in Kenya, significant developments have occurred in the country's approach to emergency care. Importantly, the country decentralized most health care functions to county governments in 2013. Despite the triple burden of traumatic, communicable, and non-communicable diseases, the structure of the health care system in the Republic of Kenya is evolving to adapt to the important role for the care of emergent medical conditions. This report provides a ten-year interval update on the current state of the development of emergency medical care and training in Kenya, and looks ahead towards areas for growth and development. Of particular focus is the role emergency care plays in Universal Health Coverage, and adapting to challenges from the devolution of health care.
RESUMEN
Emergency departments (EDs) in Africa are contact points for key groups for HIV testing services (HTS) but understanding of ED-testing delivery is limited which may impeded program impacts. This study evaluated the offering and uptake of standard HTS among injured persons seeking ED care at Kenyatta National Hospital (KNH) in Nairobi, Kenya. An ED population of adult injured persons was prospectively enrolled (1 March-25 May 2021) and followed through ED disposition. Participants requiring admission were followed through hospital discharge and willing participants were contacted at 28-days for follow up. Data on population characteristics and HTS were collected by personnel distinct from clinicians responsible for standard HTS. Descriptive analyses were performed and prevalence values with 95% confidence intervals (CI) were calculated for HIV parameters. The study enrolled 646 participants. The median age was 29 years with the majority male (87.8%). Most ED patients were discharged (58.9%). A prior HIV diagnosis was reported by 2.3% of participants and 52.7% reported their last testing as >6 months prior. Standard ED-HTS were offered to 49 or 8.6% of participants (95% CI: 5.8-9.9%), among which 89.8% accepted. For ED-tested participants 11.4% were newly diagnosed with HIV (95% CI: 5.0-24.0%). Among 243 participants admitted, testing was offered to 6.2% (95% CI: 3.9-9.9%), with 93.8% accepting. For admitted participants tested 13.3% (95% CI: 4.0-35.1%) were newly diagnosed (all distinct from ED cases). At 28-day follow up an additional 22 participants reported completing testing since ED visitation, with three newly diagnosed. During the full follow-up period the HIV prevalence in the population tested was 10.3% (95% CI: 5.3-19.0%); all being previously undiagnosed. Offering of standard HTS was infrequent, however, when offered, uptake and identification of new HIV diagnoses were high. These data suggest that opportunities exist to improve ED-HTS which could enhance identification of undiagnosed HIV.
RESUMEN
BACKGROUND: In response to the coronavirus disease (COVID-19) pandemic, Project HOPE®, an international humanitarian organization, partnered with Brown University to develop and deploy a virtual training-of-trainers (TOT) program to provide practical knowledge to healthcare stakeholders. This study is designed to evaluate this TOT program. OBJECTIVE: The goal of this study is to assess the effectiveness of this educational intervention in enhancing knowledge on COVID-19 concepts and to present relative change in score of each competency domains of the training. METHODS: The training was created by interdisciplinary faculty from Brown University and delivered virtually. Training included eight COVID-19 specific modules on infection prevention and control, screening and triage, diagnosis and management, stabilization and resuscitation, surge capacity, surveillance, and risk communication and community education. The assessment of knowledge attainment in each of the course competency domain was conducted using 10 question pre-and post-test evaluations. Paired t-test were used to compare interval knowledge scores in the overall cohort and stratified by WHO regions. TOT dissemination data was collected from in-country partners by Project Hope. RESULTS: Over the period of 7 months, 4,291 personnel completed the TOT training in 55 countries, including all WHO regions. Pre-test and post-test were completed by 1,198 and 706 primary training participants, respectively. The mean scores on the pre-test and post-test were 68.45% and 81.4%, respectively. The mean change in score was 11.72%, with P value <0.0005. All WHO regions had a statistically significant improvement in their score in post-test. The training was disseminated to 97,809 health workers through local secondary training. CONCLUSION: Innovative educational tools resulted in improvement in knowledge related to the COVID-19 pandemic, significantly increasing the average score on knowledge assessment testing. Academic - humanitarian partnerships can serve to implement and disseminate effective education rapidly across the globe.
Asunto(s)
COVID-19 , Pandemias , Atención a la Salud , Personal de Salud , Humanos , SARS-CoV-2RESUMEN
Background: Resource limited settings have an ongoing need for access to quality emergency care. The World Health Organization - International Committee of the Red Cross Basic Emergency Care (BEC) course is one mechanism to address this need. Training of BEC trainers has been challenging due to barriers including cost, travel logistics, scheduling, and more recently, social distancing regulations related to the coronavirus pandemic. Objective: We seek to determine if an online virtual format is an effective way to train additional trainers while overcoming these barriers. Methods: The BEC Training-of-Trainers (ToT) course was adapted to a virtual format and delivered entirely online. Participants were assessed with a multiple choice pre- and post-test and completed a course feedback form upon completion. Results from the virtual course were then compared to the results from an in-person ToT course. Findings: The in-person course pre- and post-tests were completed by 121 participants with a pre-test mean of 87% (range 60-100%) and a post-test mean of 95% (range: 75-100; p < 0.05). Virtual course pre- and post-tests by 27 participants were analyzed with a pre-test mean of 89% (range 75-100%) and a post-test mean of 96% (range: 79-100; p < 0.05). No difference in test improvements between the courses was detected (z = -0.485; p = 0.627). The course feedback was completed by 93 in-person participants and 28 virtual participants. Feedback survey responses were similar for all questions except for course length, with in-person participant responses trending towards the course being too long. Conclusions: A virtual format BEC ToT course is effective, feasible, and acceptable. When compared to an in-person course, no difference was detected in nearly all metrics for the virtual format. Utilizing this format for future courses can assist in scaling both the BEC ToT and, by extension, the BEC course globally, particularly in regions facing barriers to in-person training.
Asunto(s)
Servicios Médicos de Urgencia , Humanos , Encuestas y CuestionariosRESUMEN
BACKGROUND: Episodes of acute diarrhea lead to dehydration, and existing care algorithms base treatment around categorical estimates for fluid resuscitation. This study aims to develop models for the percentage dehydration (fluid deficit) in individuals with acute diarrhea, to better target treatment and avoid the potential sequelae of over or under resuscitation. METHODS: This study utilizes data from two prospective cohort studies of patients with acute diarrhea in Dhaka, Bangladesh. Data were collected on patient arrival, including weight, clinical signs and symptoms, and demographic information. Consecutive weights were obtained to determine the true volume deficit of each patient. Data were entered into two distinct forward stepwise regression logistic models (DHAKA for under 5 years and NIRUDAK for 5 years and over). RESULTS: A total of 782 patients were included in the final analysis of the DHAKA data set, and 2139 were included in the final analysis of the NIRUDAK data set. The best model for the DHAKA data achieved an R2 of 0.27 and a root mean square error (RMSE) of 3.7 (compared to R2 of 0.06 and RMSE of 5.5 with the World Health Organization child care algorithm) and selected 6 predictors. The best performance model for the NIRUDAK data achieved an R2 of 0.28 and a RMSE of 2.6 (compared to R2 of 0.08 and RMSE of 4.3 with the World Health Organization adolescent/adult care algorithm) and selected 7 predictors with 2 interactions. CONCLUSIONS: These are the first mathematical models for patients with acute diarrhea that allow for the calculation of a patient's percentage dehydration (fluid deficit) and subsequent targeted treatment with fluid resuscitation. These findings are an improvement on existing World Health Organization care algorithms.
RESUMEN
Diarrheal disease accounts for more than one million deaths annually in patients over 5 years of age. Although most patients can be managed with oral rehydration solution, patients with severe dehydration require resuscitation with intravenous fluids. Scoring systems to assess dehydration have been empirically derived and validated in children under 5 years, but none have been validated for patients over 5 years. In this study, a prospective cohort of 2,172 patients over 5 years presenting with acute diarrhea to International Centre for Diarrhoeal Disease Research, Dhaka Hospital, Bangladesh, were assessed for clinical signs of dehydration. The percent difference between presentation and posthydration stable weight determined severe (≥ 9%), some (3-9%), or no (< 3%) dehydration. An ordinal regression model was derived using clinical signs and demographics and was then converted to a 13-point score to predict none (score of 0-3), some (4-6), or severe (7-13) dehydration. The Novel, Innovative Research for Understanding Dehydration in Adults and Kids (NIRUDAK) Score developed by our team included age, sex, sunken eyes, radial pulse, respiration depth, skin turgor, and vomiting episodes in 24 hours. Accuracy of the NIRUDAK Score for predicting severe dehydration, as measured by the area under the receiver operating characteristic curve, was 0.76 (95% confidence interval = 0.73-0.78), with a sensitivity of 0.78 and a specificity of 0.61. Reliability was also robust, with an Inter-Class Correlation Coefficient of 0.88 (95% confidence interval = 0.84-0.91). This study represents the first empirically derived and internally validated scoring system for assessing dehydration in children ≥ 5 years and adults with acute diarrhea in a resource-limited setting.
Asunto(s)
Deshidratación/diagnóstico , Pruebas Diagnósticas de Rutina/normas , Diarrea/diagnóstico , Valor Predictivo de las Pruebas , Reproducibilidad de los Resultados , Índice de Severidad de la Enfermedad , Enfermedad Aguda , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Bangladesh , Niño , Estudios de Cohortes , Femenino , Predicción , Humanos , Masculino , Persona de Mediana Edad , Guías de Práctica Clínica como Asunto , Estudios Prospectivos , Adulto JovenRESUMEN
Introduction: Rwanda has made significant advancements in medical and economic development over the last 20 years and has emerged as a leader in healthcare in the East African region. The COVID-19 pandemic, which reached Rwanda in March 2020, presented new and unique challenges for infectious disease control. The objective of this paper is to characterize Rwanda's domestic response to the first year of the COVID-19 pandemic and highlight effective strategies so that other countries, including high and middle-income countries, can learn from its innovative initiatives. Methods: Government publications describing Rwanda's healthcare capacity were first consulted to obtain the country's baseline context. Next, official government and healthcare system communications, including case counts, prevention and screening protocols, treatment facility practices, and behavioral guidelines for the public, were read thoroughly to understand the course of the pandemic in Rwanda and the specific measures in the response. Results: As of 31 December 2020, Rwanda has recorded 8,383 cumulative COVID-19 cases, 6,542 recoveries, and 92 deaths since the first case on 14 March 2020. The Ministry of Health, Rwanda Biomedical Centre, and the Epidemic and Surveillance Response division have collaborated on preparative measures since the pandemic began in January 2020. The formation of a Joint Task Force in early March led to the Coronavirus National Preparedness and Response Plan, an extensive six-month plan that established a national incident management system and detailed four phases of a comprehensive national response. Notable strategies have included disseminating public information through drones, robots for screening and inpatient care, and official communications through social media platforms to combat misinformation and mobilize a cohesive response from the population. Conclusion: Rwanda's government and healthcare system has responded to the COVID-19 pandemic with innovative interventions to prevent and contain the virus. Importantly, the response has utilized adaptive and innovative technology and robust risk communication and community engagement to deliver an effective response to the COVID-19 pandemic.
Asunto(s)
COVID-19 , Control de Enfermedades Transmisibles , Atención a la Salud , Regulación Gubernamental , Gestión de Riesgos , COVID-19/epidemiología , COVID-19/prevención & control , Gestión del Cambio , Control de Enfermedades Transmisibles/legislación & jurisprudencia , Control de Enfermedades Transmisibles/métodos , Control de Enfermedades Transmisibles/organización & administración , Comunicación , Atención a la Salud/organización & administración , Atención a la Salud/tendencias , Transmisión de Enfermedad Infecciosa/prevención & control , Humanos , Innovación Organizacional , Gestión de Riesgos/métodos , Gestión de Riesgos/organización & administración , Rwanda/epidemiología , SARS-CoV-2RESUMEN
To date, the practice of global emergency medicine (GEM) has involved being "on the ground" supporting in-country training of local learners, conducting research, and providing clinical care. This face-to-face interaction has been understood as critically important for developing partnerships and building trust. The COVID-19 pandemic has brought significant uncertainty worldwide, including international travel restrictions of indeterminate permanence. Following the 2020 Society for Academic Emergency Medicine meeting, the Global Emergency Medicine Academy (GEMA) sought to enhance collective understanding of best practices in GEM training with a focus on multidirectional education and remote collaboration in the setting of COVID-19. GEMA members led an initiative to outline thematic areas deemed most pertinent to the continued implementation of impactful GEM programming within the physical and technologic confines of a pandemic. Eighteen GEM practitioners were divided into four workgroups to focus on the following themes: advances in technology, valuation, climate impacts, skill translation, research/scholastic projects, and future challenges. Several opportunities were identified: broadened availability of technology such as video conferencing, Internet, and smartphones; online learning; reduced costs of cloud storage and printing; reduced carbon footprint; and strengthened local leadership. Skills and knowledge bases of GEM practitioners, including practicing in resource-poor settings and allocation of scarce resources, are translatable domestically. The COVID-19 pandemic has accelerated a paradigm shift in the practice of GEM, identifying a previously underrecognized potential to both strengthen partnerships and increase accessibility. This time of change has provided an opportunity to enhance multidirectional education and remote collaboration to improve global health equity.
RESUMEN
Honey bee envenomations are a common occurrence and cause localized morbidity but rarely cause systemic symptoms or death in humans. Honey bee stingers have a uniquely designed venom sac with a piston-containing bifurcated stinger that can remain in human skin and continue injecting venom after stinging. For some time, it has been proposed that a retained honey bee stinger should be scraped out by a dull edge, as opposed to pinching and pulling out the stinger, in order to minimize the volume of venom injected. We undertook a literature review to evaluate the evidence regarding the effectiveness and safety of methods of honey bee stinger removal. The initial search identified 23 articles of interest; following title and abstract screening, two studies met the inclusion criteria. The included articles used different methods and models to evaluate the relationship between venom injection over time, and one of these studies also compared different methods of stinger removal. The literature review was limited by the small number of studies on the topic, but both included studies include findings relevant to the clinical question of interest. Based on the available evidence, a retained honey bee stinger should be removed as quickly as possible, and there appears to be no disadvantage in doing it by pinching and pulling.