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Erectile Dysfunction
(Impotence)
Erectile Dysfunction
(ED) is defined as
the inability to
achieve or maintain
an erection
sufficient for
mutually satisfying
intercourse. ED
impacts more than a
man's sexual
activity. The
emotions and
uncertainties that
coincide with this
condition often have
a significant effect
on a man's
self-esteem, as well
as, his relationship
with his partner.
Although the
incidence of ED
increases with age,
it is not an
inevitable result of
aging. ED is a
secondary condition
linked to many
medical conditions.
The first step in
treating ED is that
the individual
understands the
psychology,
physiology and
anatomy responsible
for the ability to
achieve and maintain
an erection. If we
can comprehend these
events than we can
better understand
the factors that are
responsible for ED
and address the
questions concerning
treatment.
Normal Erectile
Function
For something that
appears so natural,
an erection is a
rather complicated
process involving
the coordination of
the psychological,
neurological and
cardiovascular
systems. The penis
becomes erect
following a series
of events. First,
the nerves are
stimulated, a
sensation known as
arousal. No matter
what the nature of
the stimulus,
visual, mental or
physical the brain
coordinates the
following series of
events:
Nerve impulses
transverse the
length of the spinal
cord to the pudendal
nerve and on to the
penis. Smooth
muscle within the
walls of the penile
arteries respond by
relaxing.
Subsequently, the
penile arteries
dilate allowing up
to eight times more
blood to flow into
the corpora
cavernosum, (two
parallel cylinders
that transverse the
length of the
penis).
The cavernosum
become engorged with
blood expanding and
lengthening the
penis.
The expanding tissue
then exerts a
positive pressure
compressing the
veins that normally
empty the blood from
the penis,
maintaining the
blood in the penile
tissue.
When ejaculation
occurs or when
arousal is
discontinued the
penis returns to its
non-erect state.
Causes of Erectile
Dysfunction
Historically, when
an individual
consulted his
physician concerning
ED he was usually
informed there were
no known
physiological
answers concerning
his condition.
Today, a generation
of research has
resulted in
significant advances
in both the
diagnosis and
treatment of ED.
Physicians now
understand that
approximately
eighty-five percent
of ED is
attributable to
physical/organic
conditions while
only fifteen percent
is due to
psychological or
mixed origin (both
psychological and
organic). Some
important causes of
physiological ED are
as follows:
Vascular
Disease
is the leading
cause of ED.
Vascular disorders
including
arteriosclerosis
(hardening of the
arteries),
hypertension,
hypercholestremia
and other conditions
which interfere with
the blood flow to
the penis.
Additionally,
"venous leakage"
also contributes to
poor erections.
This condition
occurs when the
penile veins are
unable to constrict
efficiently during
an erection. When
these veins "leak"
blood escapes to the
periphery resulting
in a poor erection
Diabetes
is another
common cause of ED.
Approximately fifty
percent of men with
diabetes (insulin
dependent)
experience some
degree of ED after
the age of
fifty-five.
Diabetes results in
poor circulation
and/or peripheral
neuropathy. When
the nerves are
involved sexual
stimuli are not
transmitted
appropriately to or
from the brain and
ED develops.
Prescription
medications
often cause ED as a
side effect. Some
two hundred known
medications fall
into this category
including:
-
Antihypertensives
medications
significantly:
-
beta-blockers
e.g.
Atenolol,
Propanolol
and
Tenorium.
-
Diuretics
medications
e.g.
HydroDiuril
and
Lasix.
-
Ace
Inhibitors/Calcium
Channel
Blockers
medications
e.g.
Vasotec,
Lotension,
Cardizem,
Norvasc
periodically
cause
ED,
however,
they are
generally
represent
an
excellent
alternative
medication
for
individuals
with
drug
induced
ED.
-
Antidepressant/Antipsychotic
medications
of almost
any label
can also
result in ED
e.g. Prozac,
Elavil,
Zoloft,
Thorazine,
Haldol.
Note: Many
other
medications
in a variety
of classes
can
periodically
cause ED.
If you are
taking a
prescription
medication
or
over-the-counter
medication,
regularly,
please
consult with
your
physician.
However,
never alter
a dosage or
discontinue
a medication
without the
advice of
your
physician.
-
LH-RH
Analogs/Antiandrogen
medications
e.g. Lupron
Depot®,
Eulexin,
Nilandron®,
Casodex®,
etc. These
medications
are used in
the
treatment of
prostate
cancer.
They
function by
decreasing
the
production
of
testosterone
in the
testes and
adrennal
glands. The
decrease in
testosterone
often
results in
ED.
-
Chemotherapy/Radiation
therapy
are also
significant
contributors
to ED.
These
drugs/treatments
are used in
the
treatment of
cancer.
Substance
Abuse
can also negatively
effect male
potency. The
chronic use of
cocaine, marijuana,
alcohol, steroids
etc. often results
in ED, as well as a
decrease in desire.
Excessive tobacco
use can also
attribute to ED by
accentuating the
effects of other
risk factor such as
vascular disease or
hypertension.
Radical Pelvic
Surgery
also result in
ED. Surgical
procedures involving
the prostate gland,
bladder or colon may
interfere with the
nerves involved in
the erectile
response. Radiation
therapy for cancer
may also effect the
erectile process.
Neurological
diseases
such as multiple
sclerosis,
Parkinson's disease,
spinal cord
injuries, long term
effects of diabetes
can also result in
the disruption of
the normal sequence
of events necessary
for an erection to
occur.
Deficiencies
in the Endocrine
System are
another source of
ED. Low levels of
testosterone or
thyroid hormone can
interfere with the
stimulation process
necessary in the
erection sequence.
Excessive production
of prolactin by the
pituitary gland may
contribute to
decreased levels of
testosterone
resulting in a lack
of desire. Diabetes
once again enters
the scenario as it
is classified as an
endocrine disorder.
Psychological
ED is
usually diagnosed
when no physical
causes can be
defined. Pure
psychological ED
usually occurs
suddenly without
warning as opposed
to physical ED that
may gradually
develop over years.
Some common causes
of psychological ED
are as follows:
-
Performance
anxiety
is one of
the most
common
causes of
psychological
ED. When a
man feels
pressured to
achieve or
maintain an
erection, he
will
commonly
become
anxious and
nervous when
in a
sexually
demanding
situation.
Stress
increases
the body's
production
of
catecholamines
such as
adrenaline
and nor-
adrenaline,
which act as
erection
inhibitors.
The release
of these
inhibitors
further
contributes
to failure
resulting in
more
anxiety.
Therefore,
the cycle
begins,
increased
stress
resulting in
increased
catecholomines
that further
inhibits the
erectile
process.
-
Depression
is
another
cause of
psychogenic
ED.
Unfortunately,
many of the
popular
antidepressant
medications
(for a list
see
prescription
medications
in the next
section)
have side
effects
which
include
erectile
failure.
Anatomical
Deviation of the
Penis,
Peyronies
Disease, may also
cause ED. This
condition usually
develops from an
inflammatory process
and results in
fibrous scaring of
the penis. (The
cause of this
process is not yet
understood)
However, when an
erection does occur,
there is a bending
of the penis
secondary to the
scar tissue. This
curvature may
interfere with
erectile capacity
and/or ejaculation.
Treatment of
Erectile Dysfunction
Until recently,
individuals who
sought medical
treatment for ED
were told "It's all
in your head".
Physicians labeled
these individuals
with a psychological
disorder and they
were referred to
counseling. Today,
there are many
treatment options
available, the
treatment option you
choose should be
specific and
responsive to your
needs and
expectations as well
as your partners.
The following is a
summary of the more
popular treatment
options available
today:

Oral
Medications
one in particular
Viagra® (Sildenafil
Citrate) has
change the course of
treatment for ED.
Never has so much
enthusiasm
surrounded a
prescription
medication. In the
first six months
alone, Pfizer's
sales of the blue
diamond shaped
tablet topped 50
million. Viagra® is
dispensed as a pill
and ingested
orally.
Approximately 30-60
minutes later the
drug is absorbed
into the
bloodstream. Viagra®
then functions as an
inhibitor to an
enzyme found mainly
in the penis. By
inhibiting this
enzyme a series of
natural occurring
events, take place
resulting in
increased blood flow
to the penis thus
generating a fuller
erection. Since the
medication increases
the levels of a
naturally occurring,
process spontaneous
erections do not
occur. Viagra® is
essentially changing
the way we treat ED.
The medication is
manufactured by
Pfizer
pharmaceuticals.
ORDER YOUR VIAGRA®
ONLINE NOW!!!
Penile
Injection Therapy
uses a hypodermic
needle to inject
medication (mixture
of papaverine,
phentolamine and
prostoglandin) into
the side of the
penis.
The drugrelaxes the
smooth muscle tissue
of the penis
allowing for an
erection. These
injections can be
painful, result in
scare tissue
formation at the
injection site and
cause priapism
(prolonged and
painful engorgement
of the penis). The
product is available
through Pharmacia
and Upjohn (Caverjet)
and Scharz Pharma,
Inc (EDEX) at
approximately $18.00
per dose.
Urethral
Inserts
consists of a
disposable
applicator, small
enough to fit into
the urethra. The
applicator is
inserted into the
urethra
approximately one
inch and the
medication
(prostaglandin E-1)
is released. As a
result, an erection
occurs lasting 30-60
minutes. Patient
acceptance is still
an issue secondary
to expense and the
low success rate as
compared to other
treatments for ED.
The inserts are
available through
the pharmaceutical
company Vivus Inc.
Vacuum Therapy
works by placing
a cylinder with an
attached pump over
the penis. The pump
creates a vacuum in
the cylinder, which
pulls blood into the
penis tocreate an
erection. The
cylinder is then
removed while
simultaneously a
constriction band is
placed at the base
of the penis. This
will usually keep
the penis erect for
up to thirty
minutes, These
devices range from
$150.00-400.00 and
can be purchased
through Mentor
Urology, POST-T-VAC,
Inc., American Med
Tech, Inc.
Hormonal
Therapy is
used to treat the
small percentage of
individuals who have
abnormally low
levels of
testosterone. During
the initial
consultation a
physician will
likely order hormone
tests (LH and
Prolactin) first to
exclude other causes
of low testosterone
levels. If
appropriate,
testosterone is
available in a
transdermal adhesive
patch. The patch is
available through
Androderm (SmithKline
Beecham) and
Testroderm (Alza
Pharmaceuticals), at
a cost of $20.00 per
patch.
Vascular
Surgery
may involve both
the arterial and
venous systems.
Venous ligation has
been reported to be
effective in
patients with venous
leakage. However,
it is often
difficult to
diagnose individuals
with this condition
given are current
testing
capabilities;
therefore, it is
difficult to predict
their outcome prior
to surgery.
Arterial
revasculation
procedures are
limited to
congenital or
traumatic vascular
abnormalities.
Similar to venous
testing, complete
standardization
diagnostic testing
has not been
established, so
difficulties
persists in
predicting surgical
results.
Penile
Implants
requires surgical
insertion of a
prosthetic device.
Three forms of
penile prosthesis
are currently
available flexible,
malleable and
inflatable.
Flexible or
Malleable rods
consist of two
semi-rigid, flexible
rods which make the
penis firm enough
for intercourse.
There are also
inflatable
prosthetic devices
that produce a more
natural erection.
When an erection is
desired the pump
(located in the
scrotum) is
squeezed, this in
turn inflates a
cylinder creating an
erection. Following
intercourse, the
pump is released and
the penis returns
too normal. These
devices have been
associated with
postoperative
infections,
mechanical failure,
silicon particle
shedding and the
risk of the initial
surgery. These
prosthetics are
available through
American Medical
Systems and Mentor
Urology.
Herbal
Approaches
are not
currently regulated
by the FDA so it is
difficult to
ascertain whether
their hype is
warranted.
Furthermore, these
products tend to
suggest an
aphrodisiac effect
(help with the loss
of sexual desire)
rather than
improvement wit ED.
Psychotherapy
and/or Behavioral
Therapy
have been found
to be beneficial in
treating ED.
Although the
majority of causes
of ED are physical,
there are quite
frequently
underlying
psychosocial factors
involved as well.
Psychotherapy and/or
behavioral therapy
may be helpful in
individuals whom no
organic cause for ED
has been detected.
Therapy often
focuses on
complications
surrounding
performance anxiety,
dysfunctional
relationships, loss
of a partner,
psychotic disorders,
substance abuse,
etc.
Partners
can provide
support for
individuals with
ED. The condition
affects the
relationships of
more than 50 million
Americans. If you
are a partner, you
can make a
difference through
support and
education. For a
list of Impotence
Anonymous (IA®) and
I-ANON® chapters,
call 1-800-669-1603
or email to.
Note: All of
the above mentioned
treatments only
treat ED, they do
not treat the
underlying illnesses
or disorders
responsible for the
ED. The prolonged
use of some these
treatments in
individuals who have
conditions such as
those listed under
causes of ED is
inappropriate.
Please be
responsible with
your health.
Schedule regular
appointments with
your family
physician and/or
your urologist so
they may address and
treat the underlying
conditions
responsible for your
ED.
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