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When conditions warrant, it can become necessary to completely remove
the prostate gland in order to reduce the chance of the cancer spreading
further. This is known as a radical prostatectomy. While
the prostate serves an accessory role in ejaculation ("potency") and
aides in stemming the flow of urine ("continence"), it is not essential
and can generally be removed with only minor effect on patient quality
of life, while greatly increasing patient longevity.
Radical prostatectomy has been performed as an open surgery for quite
some time with good success, however as minimally invasive surgery has
evolved, it has become possible to peform radical prostatectomies laparoscopically.
Recent leaps
in technology with the advent of Intuitive Surgical Inc.'s da Vinci
robot have taken radical prostatectomy past laparoscopy to an all new
level of success. In the hands of a skilled surgeon like Dr. Ahlering,
this new tool allows the radical prostatectomy to be peformed minimally
invasively with greater precision and ease to both the patient and the
surgeon than ever before.
Performing the Robotic Prostatectomy:
A General Overview for Patients
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The essence of minimally invasive surgery is to gain access to the
involved anatomy via the smallest entry points possible. Traditional
open prostatectomies involved cutting open the lower abdomen with a
large incision. Predictably, large incisions like these run a
higher risk of infection and require significantly more time for the
patient to heal, not to mention they tend to leave a large scar.
Laparoscopic techniques however, bypass this large incision and gain
the same access through a few small holes in the skin, each roughly
the size of a dime. A small plastic tube known as a "port" is
inserted in each hole to keep a channel open for laparascopic
tools to reach through. To allow room inside for the surgeon to work,
the abdomen is inflated slightly with carbon dioxide like a balloon.
In this working space, the surgeon can peform the same surgeries as
if the abdomen had actually been cut open, but without the large incision.
Through one of these ports a laparascope, essentially a very small telescope
with a camera attached, is passed to allow the surgeon to see inside
the abdomen. This is how traditional laparoscopic procedures have proceeded
and the techniques are very well proven and refined. However, in the robotic prostatectomy, instead of proceeding with laparoscopic hand tools and holding the laparascope by hand, the da Vinci Surgical system is employed. Minature robot arms and a robotic laparoscope are passed through the ports. These arms and camera are then operated by the surgeon at a remote console.
The surgeon then proceeds to dissect out the prostate using the
da Vinci
system. The da Vinci system includes a great number of robotic
tools that can be swapped in and out on each arm as needed such that
the surgeon has every tool he needs. To see what actually goes
on inside during this surgery, feel free to visit our robotic
prostatectomy video page.
Additional ports are generally added for an assistant seated at the
patient's side to help as necessary with the surgery. Thus most
patients will have 5 port sites. The procedure is performed under
general anesthesia so the patient feels no pain during surgery and
lasts an average of 3.5 hours. At the conclusion of the surgery,
the robot is withdrawn and the port holes through the skin and muscle
are closed by the surgeon with suture. The patient will awake
shortly after in the recovery room, and can generally be discharged
from the hospital about 24 hours later.
Benefits of da Vinci Robotically
Assisted surgery: How it helps the Patient.
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- Better Cancer Control.
The true color 3-D high magnification vision, 'intuitive' manipulation
of technologically advanced, precisely articulated surgical instruments,
and better control of blood loss results in better visibility and precision allowing
the surgeon to more carefully identify, expose, and dissect out cancerous
prostate. The overall rate of margin positivity of robotic prostatectomy
is <19%. More importantly, in men whose cancer is confined to within
the prostate, the apical region was correctly visualized and dissected,
resulting in very low 6% positive margins in cases of organ confined disease. Prior to the Da Vinci robot, it was very difficult to make such a clean and refined excision of the apical region of the prostate.
- Reduced Hospital Length of
Stay.
The average hospital stay for patients is slightly more than 24 hours
after surgery, regardless of age. Smaller incisions and
significantly less blood loss contribute to this fast recovery.
- Minimal Blood Loss.
The average estimated blood loss per patient averages 116 cc. This
volume is roughly the 1/3 of the volume of a 12 oz. soda can. Estimated
Blood loss has ranged for robotic patients from 25cc to a maximum
of 400 cc in the 1st 100 patients. Because of these low blood losses,
none of these men required a blood transfusion, nor were they asked
to donate autologous blood prior to surgery.
- Urinary Continence After Surgery.
Robotic prostatectomy sets an excellent record of continence. Using
the definition of zero pads used per day means men will use no pads,
not even security pad, although they may have a few drops of leakage
during the day. The percentage of men at this zero pad/day standard
is 50% at 1 month, and 75% at 3 months after surgery.
The remaining men use either a security pad or some number of pads
per day at 3 months.
Here is an
overview of the methods and results between open, laparoscopic and robot-assisted
laparoscopic prostatectomy.
Comparison
of Prostatectomy Surgical Options: Open, Laparoscopic, and Robot-Assisted
Laparoscopic
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Open Surgery* |
Laparascopic |
Robot-Assisted Laparascopic*
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| Surgery Time |
3 1/2 Hours |
4-5 Hours |
3 1/2 Hours |
| Hospital Stay |
2 Days |
1 Day |
1 Day |
| Total Incision Length |
5 inches |
2 inches |
2 inches |
| Estimated Blood Loss |
375 cc |
400 cc |
116 cc |
| Visualization |
3 Dimemsional |
2 Dimensional |
3 Dimensional |
| Magnification of Visualization |
up to 3X with magnifying
glasses |
up to 6X (uses a
single camera) |
10-12 X (utilizing a pair of
high resolution cameras)
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| Intrument Handling |
Normal |
Counter-Intuitive |
Normal (Optional
Micro-precision) |
*Data is supplied from
UC, Irvine single surgeon, Dr. Ahlering. Laparoscopic data is derived
from published literature.
©2004
UCI Department of Urology
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