00:01
So let's talk about
how we approach treatment
of patients with
partial onset epilepsy.
00:06
When I'm thinking about treatment,
we want to understand
the type of epilepsy
that we're treating
is this focal-onset or
generalized-onset epilepsy.
00:14
We want to know
the types of medicines
that we have at our disposal.
00:17
And then we select those
based on the patient.
00:20
Both based on the
side effect of the medications
and the other
medical comorbidities.
00:25
Selecting the right drug
for the right patient,
and the right epilepsy.
00:31
When we think about
epilepsy treatment,
we can put patients
and their epilepsies into buckets,
general buckets.
00:37
About a quarter of patients
will have an excellent response
to treatment.
00:41
In fact, many of these
patients seizures will remit
without anti-epileptic
drug therapy.
00:46
And this accounts for about
20 to 30% of patients.
00:49
The prototypical epilepsy syndrome
is benign epilepsy of childhood
with centrotemporal spikes.
00:56
This is an epilepsy
that will go away
spontaneously over time.
01:00
We do typically treat these children
during the period of seizures,
but often are able to take
them off
of the antiepileptic medications
long term.
01:09
The second group of patients
will have a very good response
to therapy.
01:13
Their seizures will remit with or
after anti-epileptic drug therapy.
01:18
And this accounts
for about 30 to 40%
of the patients that we see.
01:22
The classic example here is
childhood absence epilepsy.
01:26
This is an epilepsy that occurs
early in the childhood years
and then goes away
for many patients
as they enter juvenile adolescence
or certainly into adulthood.
01:35
We do treat patients absences
during the childhood phase
and are frequently able to
take them off of medications.
01:42
In general,
when we start an anti-epileptic,
we consider continuing it,
and usually will continue it
for two years,
and then would reassess
whether the drug needs
to be continued
or whether we can try to take
the patient off the medication,
and see if the epilepsy has abated.
01:57
The other categories
of patients
are typically those that are
followed long-term by neurologist.
02:03
The next group of patients
will have an uncertain prognosis.
02:06
The anti-epileptic drugs may work
but often need to be continued.
02:10
We may need to consider
an epilepsy surgery
and many of these patients will be
considered medically refractory.
02:16
This accounts for
10 to 20% of patients.
02:19
Again, medically refractory epilepsy
is epilepsy that fails and continues
where patients have
breakthrough seizures,
despite being on two medications
or having tried two medications
at sufficient doses.
02:32
Good examples of this are
juvenile myoclonic epilepsy
and temporal lobe epilepsy.
02:38
The last group of patients
has the poorest prognosis.
02:41
These are patients
who are anti-epileptic drugs
and surgery only
reduce the seizures.
02:46
But they continue to have seizures
that breakthrough
despite maximum medical
and sometimes surgical therapy.
02:53
This is the minority
of our patients,
but we'll account for
10 to 20% of epilepsy patients.
02:58
And the classic example here is
that of Lennox-Gastaut syndrome.
03:02
This is a childhood onset syndrome,
where patients have
significantly abnormal EEGs,
as well as underlying
a neurologic function
and neuro development.
03:12
Many of these patients
will have lifelong epilepsy
that remains refractory
to medications.
03:17
Many of will have
vagal nerve stimulators,
or epilepsy surgeries,
or other more advanced treatment
to manage their seizures.
03:25
When possible, we want to use
the single most effective agent.
03:29
About 47% of patients
will become seizure free
with their first
anti-epileptic drug.
03:34
And that's great,
that's about half of patients.
03:37
Unfortunately,
with additional medications,
we see reduced return.
03:42
An additional 13% of patients
will become seizure free
with the second or third
anti-epileptic drug and monotherapy.
03:48
And for the remainder of patients,
additional anti-epileptic drugs
are less helpful.
03:54
We often require multiple therapies
or sometimes non-medical therapy
to manage those patients.