| PROSTATITIS/PROSTATODYNIA
The majority of men listed as having prostatitis (prostatic
inflammation/discomfort) more often than not have a symptom complex that
is commonly stress-related and not due to an infection. This problem is
more accurately called prostatodynia and is much more common than true
chronic prostatitis or acute prostatitis, where antibiotics are
necessary.
The majority of patients with prostatitis/prostatodynia
will get better regardless of the antibiotic used or whether an antibiotic
is used at all. The most effective treatment for these men is reassurance
that they do not have cancer, an infection, or a venereal disease. In many
of these men with various combinations of low back or perineal discomfort,
urinary frequency, urgency, suprapubic and/or ejaculatory discomfort,
burning or pressure, pelvic floor spasm is often the cause. This problem
can respond to low-dose Diazepam 2-5 mg 3 times a day, alpha-blocking
agents such as Hytrin or Cardura, or sitz baths.
Many men will tell you that their symptoms are often
exacerbated after alcohol ingestion, bike riding, working out or eating
spicy foods, or because of business pressures. These causes further
highlight stress as a likely factor behind the symptom complex known as
prostatitis/prostatodynia.
In most cases, men can minimize or prevent recurrences of
the problem by recognizing the factors that bring it about.
BENIGN PROSTATIC HYPERPLASIA
(BPH)
Etiology
The cause behind BPH is unclear, but two factors are
necessary. The first is aging and the second is the presence of
dihydrotestosterone (DHT). The enlargement of the prostate, which may be
extremely variable from man to man, can result in various symptoms of
voiding dysfunction, either obstructive or irritative in nature.
The various symptoms associated with voiding dysfunction,
including incomplete emptying, frequency, intermittency, urgency, weak
stream, straining, and getting up at night. The American Urological
Association (AUA) has grouped some of these complaints as a symptom index
for BPH. These symptoms are not necessarily related to the size of the
prostate. In fact, some men with very large prostates have only mild
symptoms of voiding dysfunction. Furthermore, acute urinary obstruction
with acute urinary retention may occur in men independent of the size of
the enlargement. Many such men will experience a return to normal voiding
patterns after one or more voiding trials with catheter removal. In some
men, acute retention may be precipitated through cough and cold
medications, alcohol, excessive fluids, constipation, immobilization,
anesthesia or urinary tract infections.
MEDICAL TREATMENT OF BPH
BPH is not necessarily progressive. Patients may present
with varying degrees of irritative symptoms or in urinary retention.
Medical Treatment for Irritative Symptoms
1. Alpha-1 blockers.
These medications, such as Hytrin, Cardura, and
Flomax, relax the smooth muscle in the prostate, allowing the bladder to
empty better. In addition, these medications may also lower the serum
cholesterol and triglycerides. However, in some men, they may affect
ejaculation by allowing retrograde ejaculation to occur.
2. Anti-androgens.
Finasteride (Proscar) is an anti-androgen that blocks
the conversion of testosterone to dihydrotestosterone. The conversion to
DHT is through the enzyme 5-alpha reductase and Proscar blocks this
enzyme.
Phytotherapeutic agents (herbs)
The most common over-the-counter agent available for
the treatment of BPH is saw palmetto berry extract. This berry comes
from the saw palmetto palm plant. Although the clinical usefulness of
saw palmetto and many other agents is still unproven, a number of
patients believe their symptoms are improved on this agent alone or
further improved after they add saw palmetto to an alpha-1 blocker such
as Hytrin, Cardura or Flomax. Also, it is not known to what degree the
placebo effect plays a role.
URINARY RETENTION
Acute Urinary Retention
In women, this may occur after delivery or in various
conditions such as multiple sclerosis, while in men it may also be
caused by enlargement of the prostate. These patients are quite
uncomfortable and require a catheter to relieve the bladder obstruction.
Ordinarily, many of these patients can be given a voiding trial after
one or more days of bladder decompression, and many will regain normal
bladder function, especially those patients who have had a precipitating
event such as anesthesia, alcohol, cough medicines, constipation or a
urinary tract infection.
Residual prostatic symptoms may be treated with one of
the various medications outlined above.
Chronic Urinary Retention
This may occur in women because of diabetes or various
neurological disorders, while in men it is usually secondary to outflow
obstruction, of which prostate enlargement is the most common cause. In
this scenario, patients have very severe bladder outlet obstruction
affecting the drainage of their kidneys or compromising their function.
Patients are generally not too symptomatic but may complain of lower
abdominal fullness and some incontinence.
Men may have some mild prostatic symptoms. These
patients will require slow drainage of their bladder, as rapid
decompression can result in significant hematuria. Because the bladder
muscle has been so overexpanded over a period of time, it is possible
that the muscle may not regain its function sufficiently after surgical
treatment to relieve the obstruction. In order for the bladder to work
properly, the patient may also be required to empty his bladder with
clean, intermittent catheterization. The addition of a medication like
Bethanechol may be helpful in improving bladder contractions.
SURGICAL
TREATMENT OF BPH
1. Transurethral resection of
the prostate (TURP).
It is the standard procedure for relieving prostatic
obstruction in those with significant symptoms. This procedure is
extremely effective, is usually done under a spinal block, and takes
about an hour. This usually requires an overnight stay in the hospital
but can be done as an outpatient.
2. Open Prostatectomy.
In those with very large prostates or associated
bladder stones or other bladder pathology, a small suprapubic incision
is made to enucleate the prostate. Recovery may take 2 or 3 days extra
than that needed for the transurethral resection but more importantly
offers definitive treatment so the patient has an excellent chance of
normalizing his lifestyle once more.
3. Minimally Invasive
Procedures for the Treatment of BPH.
Many of the procedures listed below may be acceptable
alternatives to those described above, particularly for those with small
prostates. However, although there may be less risk with these
procedures, the trade-off may be less improvement in urinary symptoms
than one would expect.
A. Electroresection.
1. Transurethral incision (TUIP). This procedure is indicated
in patients with obstructive symptoms from normal-sized or very small
prostates, where resection would be considered excessive.
2. Transurethral vaporization (Vaportrode or Rollerball)
B. Radiofrequency.
Dry electroresection-TUNA. Transurethral needle ablation
(TUNA) delivers radio-frequency energy to the prostate. A temperature
probe is placed in the rectum, the TUNA catheter is placed into the
urethra, and two specialized needles (which act as radiofrequency
antennae) are passed through the catheter into the enlarged prostate.
Radiofrequency energy is then transmitted via the needles into the
tissues and the needles repeatedly replaced, with each treatment
section lasting for about 5 minutes. This procedure takes about an
hour and is done as an outpatient using local anesthesia. (See TUNA Therapy)
C. Microwave.
Transurethral microwave therapy (low or high energy). This
procedure (TUMP) damages the muscular components of the prostate
tissue, bringing about their relaxation and therefore improvement in
urinary symptoms. The procedure is done as an outpatient, and the
patient reclines on a specially designed couch with a temperature
probe in the rectum. A small catheter containing the microwave antenna
is then positioned in the urethra adjacent to the prostate. The
treatment usually lasts for an hour. (See Thermatrix)
D. Laser.
Transurethral laser-induced prostatectomy (TULIP) has fallen
out of favor due to irritative voiding problems postoperatively.
Visual laser ablation of the prostate (VLAP) has similar problems to
TULIP. Holmium:YAG laser resection. Interstitial laser coagulation
(Indigo). The Greenlight PVP laser procedure may be performed as an outpatient.The Greenlight PVP laser procedure of the prostate may be performed as an outpatient through a virtually blood free treatment under regional anesthesia and with restoration of urinary flow.
(See Laserscope)
E. Others.
Prostatic stents. Permanent spiral metal stents have been used
in certain situations to keep the prostate open but have the
complications of encrustation, obstruction with inflammatory
granulation tissue, and migration. Some stents have also been made
with a shape memory alloy with thermal expansion of the stent taking
place after the positioning catheter is removed. Bioabsorbable and
biodegradable urologic stents are also being evaluated.
Balloon dilatation. The prostate is dilated with a special
balloon catheter under an outpatient anesthetic. The effects on the
prostate are usually transitory.
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