Saturday, September 28, 2024

 

Naloxone successful in over half of uses in reversing signs of opioid overdose in the prehospital setting


Study of naloxone use documented by emergency responders found most involved teenagers, more often boys

Reports and Proceedings

American Academy of Pediatrics




ORLANDO, Fla.—The opioid epidemic is a leading cause of morbidity and mortality in the United States, and it is increasingly impacting children and teenagers. Naloxone can reverse the effects of opioid overdose and is being used in hospitals and by emergency responders outside the hospital to save the lives of young people poisoned by opioids.

Research titled, “Naloxone Administration to Pediatric Patients During Emergency Medical Service Events,” finds that among pediatric emergency medical service responses where naloxone was administered, the first dose was successful in improving clinical status in 54.1% of cases. Approximately one-third (32.7%) of pediatric patients received two or more naloxone doses, according to an abstract presented during the American Academy of Pediatrics 2024 National Conference & Exhibition at the Orange County Convention Center from Sept. 27-Oct. 1.

“Emergency medical services clinicians rarely reported that naloxone worsened clinical status, and naloxone improved a patient's clinical condition in over half of emergency responses in our study,” said lead study author Christopher Gaw, MD, MPH, MBE, FAAP, emergency medicine physician at Nationwide Children’s Hospital. “This finding underscores how naloxone can be a safe and effective antidote when used for suspected opioid poisonings in children and adolescents.”

Researchers examined data from the National Emergency Medicine Service Information System (NEMSIS) on emergency medical service activations for pediatric patients ages 17 and younger in 2022, and found naloxone was administered to teenagers and children at least 6,215 times that year. The study also found that one in five adolescents 13-17 years old were documented as receiving naloxone prior to emergency medical service arrival (20.7%), meaning that somebody on the scene administered naloxone. Naloxone administrations occurred most often in the home or residential setting (61.4%). The research also found that most overdoses occur in adolescents, ages 13-17 (79.4%), followed by children ages 1-5 (10.2%), and boys were also slightly more likely to receive naloxone (55.3%).

The calls for assistance suggest there may be initial confusion in the early emergency medical service response period before a diagnosis is made. In the study, the initial emergency call was for an overdose, poisoning, or ingestion in about a third of the calls for adolescents 13-17 (31.5%) and just 12.8% of calls for infants.

“Our study highlights how EMS clinicians are reporting naloxone use after responding to different types of emergency dispatch calls, such as poisonings, unconsciousness, and problems breathing,” Dr. Gaw said. “These signs and symptoms could represent a possible opioid poisoning, which may explain why naloxone was administered in those situations.”

Dr. Gaw is scheduled to present his research, which is below, from 4:15-5 p.m. Saturday, Sept. 28, at the Section of Emergency Medicine program during the national conference. 

In addition, Dr. Gaw will be among highlighted abstract authors who will give brief presentations and be available for interviews during a press conference from noon-1:30 pm Saturday in the National Conference Press Room, W208 AB. During the meeting, you may reach AAP media relations staff at 407-685-5401.

 

Please note: only the abstract is being presented at the meeting. In some cases, the researcher may have more data available to share with media, or may be preparing a longer article for submission to a journal. 

 

# # #

 

The American Academy of Pediatrics is an organization of 67,000 primary care pediatricians, pediatric medical subspecialists and pediatric surgical specialists dedicated to the health, safety and well-being of infants, children, adolescents and young adults. For more information, visit www.aap.org. Reporters can access the meeting program and other relevant meeting information through the AAP meeting website at http://www.aapexperience.org/

 

ABSTRACT

Program Name: 2024 AAP National Conference-Abstracts

Submission Type: Section on Emergency Medicine

Abstract Title: Naloxone Administration to Pediatric Patients During Emergency Medical Service Events

Christopher Gaw

Columbus, OH, United States

The opioid epidemic is a leading cause of morbidity and mortality in the United States. In recent years, opioids have been implicated in rising injury and fatality rates among children. Early recognition and reversal of opioid poisoning can be lifesaving, and emergency medical services (EMS) clinicians are often the first healthcare providers to respond to an overdose event. Few studies have characterized the pre-hospital response to pediatric opioid poisonings. The objective of this study is to describe the patient and EMS response characteristics for children and adolescents receiving naloxone in the prehospital setting.

We acquired data from the National Emergency Medicine Service Information System (NEMSIS) on EMS activations for pediatric patients 1 day to 17 years old in 2022. Among these activations, we identified children who received ≥ 1 dose of naloxone. We analyzed patient demographics and EMS response characteristics using descriptive statistics and characterized the incidence rate of pediatric EMS activations where naloxone was administered.

In 2022, 6,215 EMS activations met our inclusion criteria. Activations more commonly involved males (55.3%) and were dispatched to a home or residential setting (61.4%) (Table 1). Most responses involved adolescents 13-17 years old (79.4%), followed by children 1-5 years (10.2%) and infants < 1 year (6.0%). The incidence of naloxone administration per 10,000 activations was highest in the 13–17-year age group (57.5), followed by the < 1 year (17.9) and 1–5-year (11.1) age groups. One in five adolescents 13-17 years old were documented as receiving naloxone prior to EMS arrival (20.7%, 974/4,702) compared to fewer than one in ten infants < 1 year (8.2%, 28/341). Most EMS activations involving naloxone administration involved an advanced life support unit (91.0%) (Table 2). An initial dispatch complaint of an overdose, poisoning, or ingestion was more common among responses to adolescents 13-17 years old (31.5%, 1,555/4,937) compared to infants < 1 year (12.8%, 48/375). Approximately one third (32.7%) of pediatric patients received 2 or more naloxone doses. The first dose of naloxone led to a clinical improvement in a greater proportion of 1-5 years old (64.7%, 388/600) compared to infants < 1 year (51.3%, 184/359) and adolescents 13-17 years (54.0%, 2,474/4,580). Naloxone administration was followed by a worsening in clinical status in 11 individuals in our study population (0.2%).

Infants and young children administered naloxone received different EMS care compared to adolescents. EMS dispatches to infants receiving naloxone were uncommonly identified as poisonings or ingestions, and few infants received naloxone prior to EMS arrival. Notably, naloxone administration was rarely documented to worsen clinical status in pediatric patients. These findings highlight opportunities to improve community and prehospital provider identification and management of suspected pediatric opioid poisonings.

Table 1. Characteristics of pediatric patients receiving naloxone from emergency medical services, NEMSIS 2022

 

Table 2. Emergency medical service response characteristics of pediatric patients receiving naloxone by age, NEMSIS 202

Opioid poisoning in children increasing alongside adult misuse



Fentanyl found to be the most common drug causing the increase, according to new research



American Academy of Pediatrics

 



Orlando, Fla.—The impacts of the ongoing opioid crisis are trickling down to young children, according to research presented during the American Academy of Pediatrics 2024 National Conference & Exhibition at the Orange County Convention Center from Sept. 27-Oct. 1.

One abstract, “Characteristics of Children with Opioid Poisoning Consulted by a Child Protection Service,” examined the demographic and medical records of 69 children who were assessed by Suspected Child Abuse and Neglect teams in the Philadelphia, PA area.

The study found that over a 10-year period from June 2012 to Dec. 2023, there was an increase in cases of children overdosing on opioids, with a four-fold increase from 2019 to 2023. Most of the children were under the age of 2, with the youngest being 19 -days old.

Dr. Maria Quidgley-Martin, Pediatric Emergency Medicine Attending and Clinical Assistant Professor of Emergency Medicine at the University of Florida and lead author on the study, found that fentanyl was the drug most often found in these overdose cases.

“As parents and other adults increasingly misuse opioids, it’s becoming more and more possible for those drugs to end up in children’s hands,” Quidgley-Martin explained. “Children are most often coming across these drugs in familiar settings such as their home or the home of a relative.”

Non-Hispanic Black children were the most susceptible as the group experienced an 11-fold increase from 2019 to 2023, a sharp increase even when compared to the four-fold general increase over that same timeframe.

Typical symptoms of opioid poisoning in children include changes in behavior, unresponsiveness, difficulty breathing and seizures. According to Dr. Quidgley-Martin, most also weren’t given naloxone, a powerful nasal drug used to counteract the effects of opioid overdose.

“Children are the overlooked tragic victims of the United States’ opioid epidemic and fentanyl is now the greatest danger,” Dr. Quidgley-Martin said. “We need our first responders to always consider administering naloxone to unconscious pediatric patients in case they have unknowingly been exposed.”

Over half of the patient’s families had previous contact with Child Protective Services with 65% reporting a family history of opioid abuse. These numbers highlight the ongoing crisis opioids are perpetuating on families across the country.

Of the 69 patients studied, four died. They were all younger than 2 -years-old and all tested positive for fentanyl.

“As a pediatric emergency medicine doctor, I have seen children injured and killed by fentanyl way too often,” Dr. Quidgley-Martin said. “We need to speak about this more and work together to protect our children.”

Study author Dr. Maria Quidgley-Martin, is scheduled to present her research, which is below, at the Council on Child Abuse and Neglect at 1:20 p.m. on Sunday, Sept. 29 in the Regency Ballroom R at the Hyatt Regency Orlando. To request an interview with the authors, contact Joey McCool Ryan at MCCOOL@chop.edu.

Please note: only the abstract is being presented at the meeting. In some cases, the researcher may have more data available to share with media, or may be preparing a longer article for submission to a journal.   

 

# # #  

 

The American Academy of Pediatrics is an organization of 67,000 primary care pediatricians, pediatric medical subspecialists and pediatric surgical specialists dedicated to the health, safety and well-being of infants, children, adolescents and young adults. For more information, visit www.aap.org. Reporters can access the meeting program and other relevant meeting information through the AAP meeting website at http://www.aapexperience.org/ 

 

ABSTRACT 

Program Name: 2024 AAP National Conference-Abstracts

Submission Type: Council on Child Abuse and Neglect

Abstract Title: Characteristics of Children with Opioid Poisoning Consulted by a Child Protection Service

Maria Quidgley Martin

Philadelphia, PA, United States

The opioid epidemic in the United States significantly affects children, with rising opioid exposures, notably fentanyl, leading to fatal poisonings among young children. Increased adult opioid misuse also correlates with heightened child abuse and neglect, requiring intervention from the child welfare system. However, to date, there is no literature that describes the demographic, clinical, and social characteristics, as well as acute medical outcomes of children with opioid poisoning evaluated for child maltreatment. This study aims to address this gap by detailing these features among children consulted by the child protection team at our institution.

This retrospective cohort study conducted at a quaternary urban children's hospital analyzed children who received a Suspected Child Abuse and Neglect (SCAN) team consultation for opioid exposure between June 2012 and December 2023. Demographic, clinical, and social de-identified data were collected from medical records from an existing patient registry and entered into a REDCap database. Descriptive statistics were used to characterize the population, and comparisons were made based on age and fentanyl exposure.

There were 69 consults for opioid ingestions, with a four-fold increase observed from 2019 to 2023. Most patients were under two years old (72%), with a notable proportion being non-Hispanic Black children (11-fold increase from 2019 to 2023). Fentanyl was the most common opioid. The majority (87%) of cases occurred in the patient's home or a relative's residence. The most common chief complaints were altered mental status, abnormal breathing, and seizures. Eleven patients presented in cardiac arrest (9 under age 2), and 71% had respiratory arrest or depression on presentation. Emergency medical services initially cared for 59% of patients, and 61% were transferred from 23 area hospitals. Naloxone was administered to 71% of patients, with higher odds in children under age 2 (OR 3.2, (1.04-9.8, p=0.04)). Fifty-eight percent were admitted to the ICU, with higher odds for those under age 2 (OR 3.33 (1.1 to 10, p=0.03)). Four children died, all under 2 due to fentanyl poisoning. Fifty-two percent of patients' families had prior child protective services (CPS) involvement, with higher odds in children under age 2 (OR 4.57 (1.42 to 14.7), p=0.01)). A family history of opioid abuse was reported in 65% of cases. Nearly half of patients were discharged to an out-of-home placement.

The increase in SCAN consults for opioid ingestions, primarily fentanyl-related, highlights the urgent need to address opioid exposure among children. Young children and non-Hispanic Black patients are disproportionately affected. Most ingestions occur in familiar settings, and pre-hospital care is often provided by emergency medical services, with many children transferred from general emergency departments. Results from this study can guide education, advocacy, and policy efforts to address the impact of the opioid crisis on children.

Race and Ethnicity Trends Over Time

 

There was an eleven-fold increase in the number of Non-Hispanic, Black patients consulted by the SCAN team between 2019 and 2023 compared to previous years.

Urine Drug Screen Results Over Time

 

There were 45 patients (65% of all) who tested positive for fentanyl, mostly all after 2019.

 

 

DICKENSIAN AMERIKA

Children in foster care with disabilities face significant challenges



Research on children in foster care with disabilities found profound impacts, including lower likelihood of permanent placement and higher risk of death



American Academy of Pediatrics



ORLANDO, Fla.— Children with disabilities in foster care are extremely vulnerable, facing risks of maltreatment and removal from their homes and greater need for healthcare services. New research suggests that children with specific disabilities in foster care are less likely to find a permanent home and have a higher risk of mortality while in care compared to those without disabilities.

This research, “The Effect of Initial Disability on Permanency Outcomes of Children in Foster Care,” presented during the American Academy of Pediatrics 2024 National Conference & Exhibition at the Orange County Convention Center from Sept. 27-Oct. 1, found that children in foster care with specific disabilities were far less likely to achieve a positive outcome like adoption, guardianship, or reunion with family. Furthermore, children in foster care with intellectual disability, physical disability, and emotional disturbance had a significantly higher risk of death compared to those without disabilities.

“In undertaking this study, we expected to find differential outcomes for children with disabilities,” said senior author Jill D McLeigh, PhD. “We were, however, surprised by the degree to which risk levels for failing to achieve permanency were higher for children with disabilities – across several disability types – and for dying while in care for physical disability, emotional disturbance and other medical conditions.”

Researchers analyzed national data from the federal Adoption and Foster Care Reporting System from fiscal year 2005 to 2019 for about 3.24 million children, ages 16 and younger, with disabilities in foster care. Results showed surprising challenges for these children. Children with intellectual disability, visual/hearing impairment, or emotional disturbance were less likely to achieve a positive outcome, such as reunification with family, adoption or permanent custody with another individual, and were more likely to leave foster care by running away, through emancipation or by being transferred to other agencies.

“Given that children in foster care have higher rates of disability, it is very important that the child welfare and healthcare systems work to address the needs of this highly vulnerable population and to provide support to their caregivers,” said presenting author Gunjan Singh, MD, FAAP.  

Study author Dr. Singh is scheduled to present the research, which is below, from 2:25- 2:35 p.m. Sunday, Sept. 29, 2024, at the Council on Foster Care, Adoption, and Kinship Care program at the Orange County Convention Center.

 

Please note: only the abstract is being presented at the meeting. In some cases, the researcher may have more data available to share with media, or may be preparing a longer article for submission to a journal. 

 

# # #

 

The American Academy of Pediatrics is an organization of 67,000 primary care pediatricians, pediatric medical subspecialists and pediatric surgical specialists dedicated to the health, safety and well-being of infants, children, adolescents and young adults. For more information, visit www.aap.org. Reporters can access the meeting program and other relevant meeting information through the AAP meeting website at http://www.aapexperience.org/

 

ABSTRACT

Program Name: 2024 AAP National Conference-Abstracts

Submission Type: Council on Foster Care, Adoption, and Kinship Care

Abstract Title: The Effect of Initial Disability on Permanency Outcomes of Children in Foster Care

Children with disabilities in foster care (FC) are an exceptionally vulnerable group. In addition to significant physical, mental, and/or developmental health challenges, they also face risk factors related to maltreatment and removal from their homes and greater need for healthcare services. The few studies that have explored disability and FC status have shown that having a disability is a barrier to permanency and associated with other poor outcomes. These studies, however, have been limited by single-state or small samples, exclusive focus on older youth, and/or cross-sectional data.

To address this gap, this study merged data from the federal Adoption and Foster Care Reporting System (AFCARS) from fiscal year (FY) 2005 to 2019 to provide longitudinal data on children with disabilities, and by disability type, in foster care and comparison data for children without disabilities in FC. The state ID and record number were used to find 3.24 million unique participants aged 0 to 16 when they first entered FC and link records among different FY data. The participants who first entered FC were selected based on their first removal date and excluded if seen in previous FY data (Table 1). They were divided into disability groups pre-defined by the AFCARS Code Book. Participants' longitudinal outcomes were collected from the time when they first entered FC to FY 2021. Any participants, if they stayed in FC, had at least 2-year follow-up time since they first entered FC. The study estimated the relative risk of different discharge types from FC for participants with various disabilities, using participants without disability as the reference (Figure 1).

Findings show that children in FC with disabilities are associated with greater risk for negative outcomes and that risk profiles vary by disability type. Participants with disabilities, except those with other medical conditions, were less likely to get permanence discharge (RR< 1, p< 0.0001). Participants with intellectual disability, visual/hearing impairment, or emotional disturbance were more likely to get a non-permanence discharge (RR=1.79, 1.72, 3.01 respectively, p< 0.0001). Participants with physical disability had a surprisingly high risk of death in the follow-up period (RR=9.07, p< 0.0001) as compared to participants without disability. Participants with intellectual disability or other medical conditions also had a significantly high risk of death (RR=3.12, 3.31, respectively, p< 0.0001).

This study showed that children in FC with different disabilities had different risk characteristics for non-permanence discharge or death. Given that children in FC have higher rates of disability than children not in care, specialized effort is needed from the child welfare and healthcare systems to recognize and address the health-related needs of this population and to support their caregivers.

Table 1: Data Management

 

Figure 1: Discharge Type at the End of Follow-up by Participant Disability Type on Entry into Foster Care

 

Asthma rates lower in children who received only breast milk at birth hospital



Research from a large Cincinnati medical system will be presented during the American Academy of Pediatrics 2024 National Conference & Exhibition



American Academy of Pediatrics





ORLANDO, Fla.—Infants who were exclusively fed breast milk during their hospitalization at birth were 22% less likely to develop asthma in early childhood, according to research presented during the American Academy of Pediatrics 2024 National Conference & Exhibition in Orlando.

The abstract, “Association Between Hospital Feeding Patterns and Childhood Asthma,” found lower rates of asthma in the infants born at the Cincinnati Children’s Hospital Medical Center who were exclusively fed breast milk even after adjusting for maternal race, insurance, infant sex, and length of hospital stay. Researchers will present their findings during the conference at the Orange County Convention Center from Sept. 27-Oct. 1.

“Although the birth hospitalization lasts only a few days, it sets a critical foundation for establishing breastfeeding, which can influence health outcomes like childhood asthma,” said Laura Placke Ward MD, IBCLC, FAAP, a study author and co-director for the Center for Breastfeeding Medicine at Cincinnati Children’s Hospital Medical Center.

“Our study underscores the importance of hospital practices in supporting exclusive breastfeeding, as these early experiences may impact long-term health,” she said.

 While longer duration and exclusive breastfeeding are known to reduce asthma risk, the effect of breastfeeding during the birth hospitalization is less understood, the authors note.

Of the 9,649 children included in the study, 81% received some breast milk and 31% exclusively received breast milk during the birth hospitalization. Five percent had a diagnosis of asthma. Infants who received only breast milk had a lower rate of asthma diagnosis compared to those who did not receive any breast milk or did not receive breast milk exclusively after adjusting for sex, race, and insurance status. Additionally, infants whose first feeding was breast milk also had a lower rate of asthma compared to those whose first feeding was not breast milk.

“This finding highlights the need for greater emphasis on supporting and promoting exclusive breastfeeding during the early days of life,” Dr. Ward said. “By focusing on these crucial first days, we may impact children's health and potentially reduce the risk of chronic conditions like asthma.”

Dr. Ward is scheduled to present the research, which is below, from 1:05-1:15 PM on Sunday, Sept. 29, 2024, in the Hyatt Regency Ballroom C.

In addition, Dr. Ward and Jennifer McAllister, MD, IBCLC, FAAP, will be among highlighted abstract authors will give brief presentations and be available for interviews during a press conference at noon-1:30 PM on Saturday, September 28, 2024, in the National Conference Press Room, W208 AB. During the meeting, you may reach AAP media relations staff at 407-685-5401.

 

Please note: only the abstract is being presented at the meeting. In some cases, the researcher may have more data available to share with media, or may be preparing a longer article for submission to a journal. 

 

# # #

 

The American Academy of Pediatrics is an organization of 67,000 primary care pediatricians, pediatric medical subspecialists and pediatric surgical specialists dedicated to the health, safety and well-being of infants, children, adolescents and young adults. For more information, visit www.aap.org. Reporters can access the meeting program and other relevant meeting information through the AAP meeting website at http://www.aapexperience.org/

 

ABSTRACT

Program Name: 2024 AAP National Conference-Abstracts

Submission Type: Section on Breastfeeding

Abstract Title: Association Between Hospital Feeding Patterns and Childhood Asthma

Laura Ward

Cincinnati, OH, United States

Breast milk is the optimal nutrition for newborns, and breastfed infants have a decreased risk of developing many childhood illnesses, including asthma. Studies have shown that longer periods of exclusive breastfeeding confer greater protection against asthma, but few studies have evaluated the impact of birth hospital feeding patterns on childhood asthma. Our objective was to examine the relationship between breastfeeding patterns during birth hospitalization and the diagnosis of childhood asthma.

We utilized the Maternal Infant Data Hub (MIDH), a regional perinatal data repository of maternal and infant dyads born within a large academic hospital system and linked to childhood data within the regional children’s hospital. Children born between 2017-2019 were included. Demographic information was collected, including sex, race, and insurance status. Feeding data including feeding type, frequency, and timing were collected from the birth hospitalization data, and asthma diagnoses were collected from the children's hospital records. We used descriptive statistics to examine demographic characteristics and multiple regression models to examine feeding type and asthma. Odds ratios were calculated from the bivariate and multivariable analyses.

There were 9649 children included in our study. Of those, 81% received any breast milk and 31% exclusively received breast milk during the birth hospitalization. Five percent had a diagnosis of asthma. Infants who received only breast milk had a lower rate of asthma diagnosis compared to those who did not receive any breast milk or did not receive breast milk exclusively after adjusting for sex, race, and insurance status. Additionally, infants whose first feeding was breastmilk also had a lower rate of asthma compared to those whose first feeding was not breast milk.

Development of asthma is multifactorial. Our study demonstrated that feeding patterns including first feed and exclusivity of breast milk feeding during the birth hospitalization are associated with decreased rates of childhood asthma. Although external factors may impact those who develop asthma, this work highlights the importance of early breastfeeding in mitigating the risk. Further work is needed to examine additional variables including prenatal, postnatal, and environmental factors and the influence of asthma outcomes.

Table 1.

 

Demographic and descriptive data and bivariate analysis comparing those with and without an asthma diagnosis. Discharge feeding defined as feeding type for twenty-four hours prior to birth hospital discharge.

Figure 1.

 

Forest plot demonstrating the odds ratios and confidence intervals (CI) for the diagnosis of asthma by hospital feeding patterns in A) bivariate analysis and B) multivariable analysis controlling for sex, race, insurance type

 

 

A recent doctoral thesis shows that learning is also something that needs to be learned and taught



Estonian Research Council




In his thesis, entitled "Teachers' and students' knowledge of learning strategies and how to teach them in the classroom", Granström investigated the methods used in Estonian schools to make learning more effective and the extent of their use. "Teachers were found to employ a variety of learning strategies and to value deeper learning strategies more than superficial ones, but their knowledge of them is sometimes incomplete,” he summarises the findings of his study. “There is also a lack of knowledge of how to teach and link learning strategies to learning.”

At the same time, his research shows that students value strategies that support shallow rather than deep learning, which can be difficult to understand, as immediate results are harder to perceive and teachers tend not to explain the advantages of one method or another. "In order for students to move towards the use of more sophisticated learning strategies that support deep learning, teachers should consciously support the development of students' knowledge of learning strategies and encourage their independent use,” Granström finds.

The more rapidly the world around us changes, the more topical this issue becomes, because knowing how to plan learning more effectively and to learn independently is important not only in school, but also later in life. "In a society where flexibility of knowledge is of great importance, and adaptation and the independent acquisition of knowledge is a lifelong process, poor knowledge of learning can become an obstacle to adapting to change," the researcher notes.

"If a teacher can adequately explain and demonstrate to their students the advantages of different learning strategies and how to use them independently, as well as guiding the students to use them, this will have a positive impact on students' motivation to learn."

In order to ensure that teachers are able to use learning strategies when planning lessons, and to explain them to pupils, Granström recommends that teacher training and school development programmes place more emphasis on introducing them: teachers need to be taught how to use learning strategies starting with students in Grade 1.

Mikk Granstöm defended his PhD thesis "Teachers' and students' knowledge of learning strategies and their teaching in the classroom" on 17 September. The thesis was supervised by Professors Eve Kikas and Eve Eisenschmidt of Tallinn University and opposed by Associate Professor Pirko Tõugu of the University of Tartu and Professor Markku Hannula of the University of Helsinki.

 

The survival rate for avalanche burials has increased by ten percent since 1994



An analysis of 40 years of avalanche data highlights the importance of rescues undertaken by companions


Eurac Research





Modern avalanche transceivers, shovels and probes are now standard in ski touring. Along with a rise in the uptake of avalanche courses and increasingly efficient rescue teams, quicker detection and rescue of buried victims has also improved. The result: increased survival rates in avalanche burials over the past four decades. “Up until 1990, 43.5 percent of buried victims survived; now, it’s 53.5 percent,” explains Simon Rauch, the study’s lead author and an emergency physician at Eurac Research. “We analyzed data from 1981 to 2020 and compared it with a 1994 Nature study that covered a ten-year period.”

The new analysis also shows that the survival probability for long-term burials (over 130 minutes) has increased from 2.6 percent to 7.3 percent. The average rescue time has dropped from 45 minutes to 25 minutes. Rescue time decreased from 15 to 10 minutes in cases when a companion was present, while organized rescue times fell from 153 to 90 minutes. However, the phase where survival probability exceeds 90 percent has shortened from 18 to just 10 minutes.

“In 1994, we divided the survival curve into different phases and discovered that the first phase, when survival rate is very high, lasted up to 18 minutes. This became a global reference point in mountain rescue, but it now needs to be modified,” says Hermann Brugger of Eurac Research, author of the original 1994 study and co-author of the current one.

There are only hypotheses for the drastic reduction in this time window. “It could be that due to climate change and other factors, snow density has increased. The denser the snow, the less air it contains, making it harder to breathe under the snow.”  Rauch suggests. However, this theory has yet to be confirmed by data. “Time is the critical factor, and ten minutes is not long. Therefore, it’s essential to understand that the survival chances in an avalanche burial are three times higher when excursion companions are able to dig out the victims, rather than when organized rescue teams are involved.” Rauch emphasizes.

The study also highlights preventive measures such as avalanche warning services, training for ski tourers, and advancements in location and rescue techniques, along with improved emergency medical care, have significantly reduced the mortality rate for avalanche victims in recent decades.

WSL, the Swiss Institute for Snow and Avalanche Research provided the data for the study, with biostatistician Markus Falk contributing a statistical analysis using a complex model.

The results of the study by Eurac Research and WSL: the Swiss Institute for Snow and Avalanche Research were published in the renowned JAMA Network Open

 

Recording the cats in the hats



Canadian scientists knit little wool caps to contain electrodes that cats normally shake off when being tested for chronic pain.



University of Montreal

Fée the cat 

image: 

Fée, an abandoned cat with chronic osteoarthritis, was one of 11 who wore specially knitted caps for tests at Université de Montréal's veterinary school.

view more 

Credit: Aliénor Delsart / Université de Montréal




In a world first, veterinary scientists at Université de Montréal have found a way to scan the brains of cats while they’re awake, using electrodes concealed under specially knitted wool caps.

When being tested for chronic pain from common conditions like osteoarthritis, awake cats tend to shake off and chew the wired electrodes placed on their heads to produce electroencephalograms (EEGs).

To prevent that, cats are normally sedated through the procedure.

Now, in a study published in the Journal of Neuroscience Methods, researchers led by Ã‰ric Troncy and Aude Castel of UdeM’s Groupe de recherche en pharmacologie animale du Québec report a new technique to keep the electrodes in place: by placing them in crocheted beanies.

In all, 11 adult cats with osteoarthritis were tested.

After assessing their stress and pain through stimuli passed through the electrodes, the scientists then went about exposing the cats to soothing stimuli such as coloured lights and comforting smells, as a way to ease their suffering.

‘New avenues opened’

The study – which is already beginning to make headlines around the world in publications such as New Scientist – “opens new avenues for investigating feline chronic pain and its potential modulation through sensory interventions,” the study concludes.

Next up: a national and international blitz to make the work even better known.

Co-author Aliénor Delsart, a Ph.D. student, recently presented preliminary results of the UdeM team’s work on several applications of the EEG assessments – in particular, pain sensitization – to the Royal Society of Medicine, in London, England.

“We now plan to obtain NSERC - Alliance funding, in partnership with private companies, to enable us to establish a genuine EEG signature for chronic pain, and many other applications that will enable us to automate chronic pain detection in the future,” said Troncy.

One example: a collaboration with UdeM computational psychiatry professor and CHU Sainte-Justine researcher Guillaume Dumas to test the synchronicity of cerebral waves between cats (and also dogs) and their owners.