"The use of volatile substances in everyday household products has a
very low prevalence in the general population, but most abusers
belong to a group of people we should give extra attention to as a
society: youngsters in puberty from troubled households," said the
study's lead author, Dr. Kelvin Harvey Kramp of the Maasstad
Hospital in Rotterdam. "Medical personnel unfamiliar with inhalant
abuse can be confronted with their dramatic consequences, such as
cardiac arrest."
In the U.S., inhalant abuse accounts for as many as 100 to 200
deaths each year, according to the National Institute on Drug Abuse.
Cardiac arrests after inhalant abuse are common enough that they've
been given a name: "sudden sniffing death."
Inhalant abusers use one of three methods to ingest the volatile
substances that will give them a brief high: direct inhalation,
known as sniffing; inhaling through a piece of cloth, known as
huffing; and bagging, which involves breathing the substance in
through a plastic bag or balloon.
Hydrocarbons, which are used in aerosol-spray household products,
are what cause the short-lived high. These substances easily
dissolve in fat, "and therefore easily cross the lung-blood and
brain-blood barriers and dissolve into tissues with high fat
content, such as the nervous system," Kramp explained.
Once they cross the blood-brain barrier, "they disrupt normal brain
processes," said Dr. Michael Lynch, medical director of the
Pittsburgh Poison Center at the University of Pittsburgh Medical
Center in Pennsylvania, who was not involved in the case report.
"People feel a high and may pass out," Lynch said. "They may feel
agitated, happy or silly. The effect usually lasts a few minutes.
Then people will do it again or move on with their day."
Cardiac arrest can occur because inhaled propellants "sensitize your
heart," Lynch said. "They make your heart respond to adrenaline much
more readily so people can get cardiac arrests when they become
agitated or surprised."
The teen described by Kramp and his colleagues was being treated in
a drug rehab facility for ketamine and cannabis abuse. In an attempt
to get high, he put a towel over his head and inhaled the spray from
a deodorant can.
He quickly became agitated and hyperactive and then suffered a
cardiac arrest. Basic life support by nurses onsite and six rounds
of defibrillation (shocking the heart) by paramedics finally revived
him. In the hospital, was admitted to intensive care and put into a
medically induced coma.
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While his heart activity appeared to return to normal, his brain
activity never did, the doctors report. For nine days, abnormal
brain readings and visible jerking indicated continuing epileptic
seizures.
When his condition didn't improve with treatments, and it became
clear that no further intervention would help, doctors disconnected
the teen from life support.
Ultimately, Kramp explained, what killed the teen was "the time the
brain went without oxygen during the cardiac arrest. That led to
irreparable brain damage. After the brain damage the patient did not
have enough brain function to sustain life."
While the Dutch authors suggest that inhalant abuse is confined to
troubled kids, Dr. Andrew Stolbach believes that in the U.S., it's
much more widespread. "I think the number of people who either sniff
or huff or bag is probably higher than we think," said Stolbach, a
medical toxicologist and emergency physician at the Johns Hopkins
Hospital in Baltimore, Maryland. "I would bet a lot of kids are
doing it who don't have access to other drugs."
With that said, "not a lot of people die from it," Stolbach noted.
"It's not on the scale of opioids or alcohol. But it does happen. I
learned about it when I was training as a medical toxicologist. You
don't see a lot of it in hospitals, but it seems reasonably
prevalent. I grew up in the suburbs and lots of kids would do this.
But the true number is unknown. To kids it seems like harmless fun
because it involves something they are familiar with and they tend
to think of things that are around us - everyday products we see in
the garage or the bathroom - as safe."
The new article should also serve as a reminder of the importance of
cardiopulmonary resuscitation (CPR), Stolbach said. "If you
encounter someone without a pulse, the faster you start CPR, the
better chance that person has of living," he said.
SOURCE: https://bit.ly/Tm4RMr BMJ Case Reports, online November 15,
2018.
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