Clandestine Methamphetamine Labs
Frequently Asked Questions
Medical Evaluation of Children Removed from Clandestine Labs
Kathryn Wells, MD,
Medical Director ,Denver Family Crisis Center
(720) 944-3747
E-Mail
Dr. Kathryn Wells
When should
someone removed from a clandestine laboratory be medically evaluated?
All symptomatic persons should be evaluated by medical personnel
immediately upon decontamination. Asymptomatic adults may not require
additional medical intervention. It is recommended that all children
removed from clandestine labs be evaluated by a practitioner qualified to
perform a complete pediatric evaluation within 24 hours of removal from
the lab.
What signs and symptoms would a child likely display after being
exposed to the environment in a clandestine laboratory?
There is no single, well-defined expected presentation for a
child with a history of potential chemical exposure in a Methamphetamine
laboratory. Recent exposure to
Methamphetamine itself will likely cause a picture of sympathetic excess
(tachycardia, hypertension, hyperthermia, etc.). A child with a more
distant serious exposure to
Methamphetamine may present with CNS depression, neurological deficit or
coma due to catecholamine depletion.
It is important, however, not to focus only on the toxicity of the
finished drug product. In point of fact, there are an untold number of
potentially harmful chemicals with which a child could come in contact in
a clandestine laboratory. The two most common complaints in adults
following exposure to a clandestine laboratory are irritant (eye, skin or
mucus membrane) and respiratory difficulties. Evidence of irritation such
as caustic burns, redness, swelling, etc. may or may not be apparent.
Respiratory compromise, ranging from wheezing due to irritation to pneumonitis from aspiration of hydrocarbon solvents to respiratory arrest
from inhalation of gases such as phosphine or cyanide, is possible in a
clandestine laboratory.
Finally, the child should be evaluated for signs or symptoms of abuse,
neglect and nutritional deficit and, if present, further evaluation as
deemed necessary should be completed.
Does an asymptomatic child removed from a clandestine laboratory
require urgent evaluation in a hospital emergency department (ED)?
Pre-hospital care providers (EMTs or paramedics) should
evaluate all children removed from a clandestine laboratory immediately to
determine if they are truly asymptomatic. A truly asymptomatic child will
likely not require immediate evaluation in the ED, but should see a
primary care physician within 24 hours of removal from the laboratory for
a complete assessment of health and developmental status. All symptomatic
children and children not evaluated on scene by emergency medical
personnel who are removed from a clandestine laboratory should be
evaluated in the closest appropriate hospital ED.
What clinical laboratory assessments should be performed on an
asymptomatic child removed from a clandestine lab?
All symptomatic children should be managed supportively as
there is no specific antidote for an unknown chemical exposure. Usual
clinical laboratory assessments should be made in order to manage such a
child. For example, arterial blood gases in a child with notable
respiratory compromise.
With appropriate clinical and historic situations, additional analyses
such as carboxyhemoglobin or whole blood lead may be indicated.
What clinical laboratory assessments should be performed on an
asymptomatic child removed from a clandestine lab?
It is important to understand that it seems highly unlikely a
truly asymptomatic child will become ill at a later time as a result of a
toxic exposure in a clandestine laboratory. However, since there are no
closely controlled studies proving this each child must be closely
examined for the presence of symptoms.
There are two levels of clinical laboratory assessment in an asymptomatic
child removed from a clandestine laboratory. These are:
1) Acute exposure assessment and
2) General assessment of health and developmental status,
primarily
secondary to the high probability of neglect.
With respect to the acute exposure issue, some jurisdictions request a
urine drug screen be performed on children removed from clandestine
laboratories in order to assist in prosecution of the case. The topic of
urine drug screens is addressed in greater detail in the next question.
Current clinical laboratory test recommendations for the general
assessment of health and developmental status include a CBC and a
chemistry panel,
which has electrolytes, liver function tests, kidney function tests and
total protein and albumin.
When is it appropriate to order a urine drug screen on a child
removed from a clandestine lab?
The window of collection for the urine sample for a drug
screen should be as short as possible after exposure – at worst no more
than 24 hours from removal from the lab environment.
Cases exist in which children in clandestine labs have been exposed
either deliberately or inadvertently to drugs and medications other than
Methamphetamine. Some of these other substances may be detectable with
broad screening techniques such as thin layer chromatography (TLC). A
urine drug screen detects classes of commonly used drugs.
However, many harmful chemicals with which a child may come in contact
in a clandestine lab will not be detected by such a screening tool.
Clinically, in cases of unresolving tachycardia or signs of sympathetic
excess of unclear etiology, a drug screen might be useful. In completely
asymptomatic children, a urine drug screen may be beneficial for
prosecutorial efforts. Given the fact that some studies have shown greater
that 50% of these children test positive for Methamphetamine, the current
recommendation is for urine drug screening to be performed.
False positive results for amphetamines on screening tests are common
and any positive screening result should be confirmed prior to legal
action being initiated. Medical care should not be delayed while waiting
for confirmation of screening results as confirmatory testing may take
several days.
|
Meth & Pregnancy Abuse/Neglect Medical Evaluations Caring for DEC
Introduction Exposure Signs Living with Meth DEC DEC Reporting Dr. Wells Papers Dr. Shah Biography DEC LinksResearch:
Newborn's Hair Test of Mom's Meth
Use
Research:
Meth
Use Restricts Fetal Growth |