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Indian Pediatr 2020;57: 207-208 |
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Clinical Profile and Short-term Outcome of
Pediatric Status Epilepticus
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Mahesh Kamate
Child Development and Pediatric Neurology Division,
Department of Pediatrics, KAHER’s JN Medical College, Belgaum, Karnataka
590010.
[email protected]
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Status epilepticus (SE) is a common pediatric
emergency, yet understanding of contemporary care practices remains
incomplete, particularly for children in developing countries. The
clinical profile and outcome of SE in children from developing countries
is bound to be different than those from the developed countries. But,
there are very few studies on pediatric SE from India, especially in the
last decade after the new definition of SE was proposed, and many of the
published studies have been retrospective studies. The current
operational definition of SE is any active seizure of ³5 minutes
duration or recurrent episodes of seizures without gaining consciousness
in between that last for more than 5 minutes [1,2]. In this issue of
Indian Pediatrics, Chetan, et al. [3] provide some useful prospectively
collected data on pediatric SE presenting to a tertiary-care center in
India. Using the current operational definition of SE and an objective
outcome measure, Pediatric Overall Performance Category, they have
described the clinical profile and short-come outcome of 109 children
with pediatric SE from January 2017 to April 2018. Their findings
provide important information about the etiological profile of SE, the
current protocol for management of SE, the response to various
anti-epileptic drugs and short-term outcome.
Amongst the various
prognostic factors in SE, the duration of convulsive SE is the only
modifiable one with proper management. Prolonged seizures are associated
with increased risk of mortality and morbidity [4]. Unfortunately, due
to lack of public awareness, absence of prompt availability of medical
care, and lack of infrastructure to transport to appropriate centers
there is significant delay in children reaching the tertiary care
centers in developing countries. In the study by Chetan, et al. [3] the
average (range) duration of seizure was 17.5 (7-60) min. A shorter
interval between onset and initiation of treatment is important for
rapid control. However, studies from developing countries have shown
that despite significant delay in initiating SE management, the
incidence of RSE and case fatality is comparable with other cohorts
[5].Prolonged SE or treatment delay should not always be considered a
hopeless situation and all cases should be managed aggressively.
The cause of SE is the most important factor that determines morbidity
and mortality. Failure to treat the underlying cause promptly and
correctly will preclude seizure control regardless of which
anti-epileptic drug one chooses. Seizures and brain injury will ensue if
we fail to address the underlying hypoglycemia/hypocalcemia or CNS
bacterial infection in a patient presenting with refractory seizures and
acute encephalopathy [6]. In the current study, 60.6% children had acute
symptomatic etiology and measures to treat the underlying cause need to
be instituted along with the management of SE to get good outcome. This
fact needs to be stressed in the protocol for management of SE.
Infectious etiology for both SE and RSE is common in developing
countries like India [5,7].
In the current study, the second
dose of midazolam was not effective in any of the children it was
administered. It resulted in further delay in administering the second
line anti-epileptic drugs. So, this may be taken as evidence for
skipping this step in the protocol. Due to rapid internalization of
GABA-A receptors, benzodiazepines become rapidly ineffective in
management of SE with time [8]. After the first benzodiazepine dose,
currently there is insufficient evidence to suggest that one
antiepileptic drug is better than the other. Choice can be made based on
the cost, availability, past use of that drug and the details of the
type of seizures. Intravenous midazolam is the preferred anesthetic
agent for management of refractory SE in view of its safety and ease of
administration, as was the case in the present study. There is little
evidence to choose between midazolam, propofol, and thiopentone, and all
have shown comparable efficacy [5].
There is a need for
continuous video-EEG monitoring to identify and treat subclinical
seizures/SE and to avoid administering potentially harmful anti-seizure
medica-tions (i.e. barbiturate infusions) to treat clinical paroxysms
mimicking seizure [6]. In the current study, EEG monitoring was not
done, and this is one of the limitations of the study. Though non
convulsive SE is a poor prognostic indicator, whether aggressive
treatment of this translates into better outcome is not clear and this
is fraught with complications like prolongation of ventilation,
hypotension and other medical complications [5].
In the present
study [3], non-administration of anti-epileptic drugs (AED) prior to
presentation to the hospital was found to predict an unfavorable
outcome. Pre-existing epilepsy was present in around 30% children. These
children are always at a risk of having seizure recurrence. It is
important to stress on the drug compliance and prescribe them
intranasal/buccal midazolam and train parents how to administer them. A
clear plan of treatment depending on the cause of seizures should be
given to parents, so that in case of recurrence, appropriate steps can
be taken to control the seizures quickly.
In summary, Chetan, et
al. [3] provide a much needed insight into current care practices for
pediatric SE. Their findings demonstrate the benefits of auditing data
to better understand current treatment practices and identify potential
areas for refinement. This process helps in the design of both local
quality improvement initiatives and future clinical investigations.
Funding: None; Competing interests: None stated.
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