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Heat-related emergency department visits in children and teens more than doubled over the past decade in two Texas children’s hospitals, according to research presented at the annual meeting of the American Academy of Pediatrics (AAP).

“Our study really highlights the adverse effects that can come from extreme heat, and how increasing heat-related illness is affecting our children,” Taylor Merritt, MD, a pediatric resident at the University of Texas Southwestern Medical Center and Children’s Health in Dallas, said during a press briefing.

Taylor Merritt, MD, is a pediatric resident at the University of Texas Southwestern Medical Center and Children’s Health in Dallas.
University of Texas
Dr. Taylor Merritt

Underestimating the Problem?

Lori Byron, MD, a pediatrician from Red Lodge, Montana, who heads the AAP Chapter Climate Advocates program and was not involved in this research, was not surprised by the findings. “If anything, we’re vastly underestimating it because when people come in with heat exhaustion or heat smoke, that gets coded correctly, but when people come in with heart attacks, asthma attacks, strokes, and other exacerbations of chronic disease, it very rarely gets coded as a heat-related illness.”

Record-breaking summer temperatures from the changing climate have led to increased heat-related morbidity and mortality. Past research suggests that children and teens make up nearly half of all those affected by heat-related illnesses, she noted. 2023, for example, was the hottest year on record, and 2024 is predicted to be hotter, Dr. Merritt said.
 

A Sharp Increase in Cases

The retrospective study examined emergency department diagnoses during May-September from 2012-2023 at two large children’s hospitals within a north Texas pediatric health care system. The researchers compared heat-specific conditions with rhabdomyolysis encounters based on ICD-10 coding.

Heat-specific conditions include heatstroke/sunstroke, exertion heatstroke, heat syncope, heat crap, heat exhaustion, heat fatigue, heat edema, and exposure to excessive natural heat. Rhabdomyolysis encounters included both exertional and nonexertional rhabdomyolysis as well as non-traumatic rhabdomyolysis and elevated creatine kinase (CK) levels.

Among 542 heat-related encounters, 77% had heat-specific diagnoses and 24% had a rhabdomyolysis diagnosis. Combined, heat-related encounters increased 170% from 2012 to 2023, from 4.3 per 10,000 to 11.6 per 10,000 (P = .1). Summer months with higher peak temperatures were also associated with higher heat-related volume in the emergency department (P < .001).

Teenage boys were most likely to have rhabdomyolysis, with 82% of the cases occurring in boys and 70% in ages 12-18 (P < .001). “Compared to the rhabdomyolysis group, the heat-specific group was more likely to be younger, Hispanic, use government-based insurance, and live in an area with a lower Child Opportunity Index,” Dr. Merritt reported. “Most heat-specific encounters resulted in an ED discharge (96%), while most rhabdomyolysis encounters resulted in hospital admission (63%)” (P < .001).

”Thankfully, pediatric heat-related illness is still relatively rare,” Dr. Merritt said. “However, given the context of increasing temperatures, this is important for us all to know, anyone who cares for children, whether that be families or parents or pediatricians.”
 

 

 

Prevention Is Key

Dr. Byron noted that about half of AAP chapters now have climate committees, many of which have created educational materials on heat and wildfire smoke and on talking with athletes about risk of heat-related illnesses.

“A lot of the state high school sports associations are actually now adopting guidelines on when it’s safe to practice and when it’s safe to play for heat and for smoke, so that’s definitely something that we can talk to parents about and kids about,” Dr. Byron said. “Otherwise, you still have a lot of coaches and a lot of kids out there that think you’re just supposed to be tough and barrel through it.”

Rhabdomyolysis and heat stroke are both potentially deadly illnesses, so the biggest focus needs to be on prevention, Dr. Byron said. “Not just working with individuals in your office, but working within your school or within your state high school sports association is totally within the lane of a pediatrician to get involved.”

The research had no external funding. Dr. Merritt and Dr. Byron had no disclosures.

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Heat-related emergency department visits in children and teens more than doubled over the past decade in two Texas children’s hospitals, according to research presented at the annual meeting of the American Academy of Pediatrics (AAP).

“Our study really highlights the adverse effects that can come from extreme heat, and how increasing heat-related illness is affecting our children,” Taylor Merritt, MD, a pediatric resident at the University of Texas Southwestern Medical Center and Children’s Health in Dallas, said during a press briefing.

Taylor Merritt, MD, is a pediatric resident at the University of Texas Southwestern Medical Center and Children’s Health in Dallas.
University of Texas
Dr. Taylor Merritt

Underestimating the Problem?

Lori Byron, MD, a pediatrician from Red Lodge, Montana, who heads the AAP Chapter Climate Advocates program and was not involved in this research, was not surprised by the findings. “If anything, we’re vastly underestimating it because when people come in with heat exhaustion or heat smoke, that gets coded correctly, but when people come in with heart attacks, asthma attacks, strokes, and other exacerbations of chronic disease, it very rarely gets coded as a heat-related illness.”

Record-breaking summer temperatures from the changing climate have led to increased heat-related morbidity and mortality. Past research suggests that children and teens make up nearly half of all those affected by heat-related illnesses, she noted. 2023, for example, was the hottest year on record, and 2024 is predicted to be hotter, Dr. Merritt said.
 

A Sharp Increase in Cases

The retrospective study examined emergency department diagnoses during May-September from 2012-2023 at two large children’s hospitals within a north Texas pediatric health care system. The researchers compared heat-specific conditions with rhabdomyolysis encounters based on ICD-10 coding.

Heat-specific conditions include heatstroke/sunstroke, exertion heatstroke, heat syncope, heat crap, heat exhaustion, heat fatigue, heat edema, and exposure to excessive natural heat. Rhabdomyolysis encounters included both exertional and nonexertional rhabdomyolysis as well as non-traumatic rhabdomyolysis and elevated creatine kinase (CK) levels.

Among 542 heat-related encounters, 77% had heat-specific diagnoses and 24% had a rhabdomyolysis diagnosis. Combined, heat-related encounters increased 170% from 2012 to 2023, from 4.3 per 10,000 to 11.6 per 10,000 (P = .1). Summer months with higher peak temperatures were also associated with higher heat-related volume in the emergency department (P < .001).

Teenage boys were most likely to have rhabdomyolysis, with 82% of the cases occurring in boys and 70% in ages 12-18 (P < .001). “Compared to the rhabdomyolysis group, the heat-specific group was more likely to be younger, Hispanic, use government-based insurance, and live in an area with a lower Child Opportunity Index,” Dr. Merritt reported. “Most heat-specific encounters resulted in an ED discharge (96%), while most rhabdomyolysis encounters resulted in hospital admission (63%)” (P < .001).

”Thankfully, pediatric heat-related illness is still relatively rare,” Dr. Merritt said. “However, given the context of increasing temperatures, this is important for us all to know, anyone who cares for children, whether that be families or parents or pediatricians.”
 

 

 

Prevention Is Key

Dr. Byron noted that about half of AAP chapters now have climate committees, many of which have created educational materials on heat and wildfire smoke and on talking with athletes about risk of heat-related illnesses.

“A lot of the state high school sports associations are actually now adopting guidelines on when it’s safe to practice and when it’s safe to play for heat and for smoke, so that’s definitely something that we can talk to parents about and kids about,” Dr. Byron said. “Otherwise, you still have a lot of coaches and a lot of kids out there that think you’re just supposed to be tough and barrel through it.”

Rhabdomyolysis and heat stroke are both potentially deadly illnesses, so the biggest focus needs to be on prevention, Dr. Byron said. “Not just working with individuals in your office, but working within your school or within your state high school sports association is totally within the lane of a pediatrician to get involved.”

The research had no external funding. Dr. Merritt and Dr. Byron had no disclosures.

Heat-related emergency department visits in children and teens more than doubled over the past decade in two Texas children’s hospitals, according to research presented at the annual meeting of the American Academy of Pediatrics (AAP).

“Our study really highlights the adverse effects that can come from extreme heat, and how increasing heat-related illness is affecting our children,” Taylor Merritt, MD, a pediatric resident at the University of Texas Southwestern Medical Center and Children’s Health in Dallas, said during a press briefing.

Taylor Merritt, MD, is a pediatric resident at the University of Texas Southwestern Medical Center and Children’s Health in Dallas.
University of Texas
Dr. Taylor Merritt

Underestimating the Problem?

Lori Byron, MD, a pediatrician from Red Lodge, Montana, who heads the AAP Chapter Climate Advocates program and was not involved in this research, was not surprised by the findings. “If anything, we’re vastly underestimating it because when people come in with heat exhaustion or heat smoke, that gets coded correctly, but when people come in with heart attacks, asthma attacks, strokes, and other exacerbations of chronic disease, it very rarely gets coded as a heat-related illness.”

Record-breaking summer temperatures from the changing climate have led to increased heat-related morbidity and mortality. Past research suggests that children and teens make up nearly half of all those affected by heat-related illnesses, she noted. 2023, for example, was the hottest year on record, and 2024 is predicted to be hotter, Dr. Merritt said.
 

A Sharp Increase in Cases

The retrospective study examined emergency department diagnoses during May-September from 2012-2023 at two large children’s hospitals within a north Texas pediatric health care system. The researchers compared heat-specific conditions with rhabdomyolysis encounters based on ICD-10 coding.

Heat-specific conditions include heatstroke/sunstroke, exertion heatstroke, heat syncope, heat crap, heat exhaustion, heat fatigue, heat edema, and exposure to excessive natural heat. Rhabdomyolysis encounters included both exertional and nonexertional rhabdomyolysis as well as non-traumatic rhabdomyolysis and elevated creatine kinase (CK) levels.

Among 542 heat-related encounters, 77% had heat-specific diagnoses and 24% had a rhabdomyolysis diagnosis. Combined, heat-related encounters increased 170% from 2012 to 2023, from 4.3 per 10,000 to 11.6 per 10,000 (P = .1). Summer months with higher peak temperatures were also associated with higher heat-related volume in the emergency department (P < .001).

Teenage boys were most likely to have rhabdomyolysis, with 82% of the cases occurring in boys and 70% in ages 12-18 (P < .001). “Compared to the rhabdomyolysis group, the heat-specific group was more likely to be younger, Hispanic, use government-based insurance, and live in an area with a lower Child Opportunity Index,” Dr. Merritt reported. “Most heat-specific encounters resulted in an ED discharge (96%), while most rhabdomyolysis encounters resulted in hospital admission (63%)” (P < .001).

”Thankfully, pediatric heat-related illness is still relatively rare,” Dr. Merritt said. “However, given the context of increasing temperatures, this is important for us all to know, anyone who cares for children, whether that be families or parents or pediatricians.”
 

 

 

Prevention Is Key

Dr. Byron noted that about half of AAP chapters now have climate committees, many of which have created educational materials on heat and wildfire smoke and on talking with athletes about risk of heat-related illnesses.

“A lot of the state high school sports associations are actually now adopting guidelines on when it’s safe to practice and when it’s safe to play for heat and for smoke, so that’s definitely something that we can talk to parents about and kids about,” Dr. Byron said. “Otherwise, you still have a lot of coaches and a lot of kids out there that think you’re just supposed to be tough and barrel through it.”

Rhabdomyolysis and heat stroke are both potentially deadly illnesses, so the biggest focus needs to be on prevention, Dr. Byron said. “Not just working with individuals in your office, but working within your school or within your state high school sports association is totally within the lane of a pediatrician to get involved.”

The research had no external funding. Dr. Merritt and Dr. Byron had no disclosures.

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