Robotic Prostatectomy (da Vinci): Robot-Assisted Surgery for Prostate Cancer

What is robotic prostatectomy?

Robotic prostatectomy (also called robot-assisted laparoscopic radical prostatectomy – RALP) is a minimally invasive surgical procedure to remove the prostate gland using the da Vinci robotic surgical system. It is the most common surgical approach for prostate cancer in the United States (over 85% of radical prostatectomies).

The surgeon sits at a console and controls robotic arms that hold surgical instruments. The system provides 3D magnification, tremor reduction, and wristed instruments for precise dissection.

How does robotic prostatectomy work?

The da Vinci robotic system has three main components:

• Surgeon console: The surgeon sits at a console with 3D high-definition vision and controls the robotic arms with hand and foot controls.
• Patient cart: Four robotic arms hold surgical instruments and a camera. The arms are inserted through small incisions (8-12 mm).
• Vision cart: Contains the camera processor and light source.

Key features:

• 3D magnification (10-15x) – better visualisation of nerves and blood vessels
• Tremor reduction – filters out hand tremors
• Wristed instruments – 7 degrees of freedom (mimics human wrist)
• Motion scaling – large hand movements translate to small instrument movements

Benefits over open surgery

Robotic prostatectomy offers several advantages compared to open radical prostatectomy:

• Less blood loss: Average 150-250 mL vs. 500-1,000 mL for open surgery (rarely need transfusion)
• Smaller incisions: 5-6 small incisions (8-12 mm) vs. 8-10 cm open incision
• Shorter hospital stay: 1 day (often outpatient) vs. 2-3 days for open
• Shorter catheter duration: 7-10 days vs. 14-21 days for open
• Faster recovery: Return to work in 2-4 weeks vs. 4-6 weeks for open
• Lower complication rates: Less pain, fewer wound infections, less hernia risk
• Better nerve-sparing: Improved visualisation may lead to better erectile function outcomes

Who is a candidate?

Ideal candidates for robotic prostatectomy are the same as for open radical prostatectomy:

• Localized prostate cancer (T1-T2): Cancer confined to the prostate
• Life expectancy >10 years: Surgery provides benefit only if you live long enough to see it
• Good surgical candidate: No major contraindications (severe heart disease, uncontrolled bleeding disorder)
• Intermediate or high-risk cancer: Gleason 7+ (3+4, 4+3, 8-10)
• Low-risk cancer (Gleason 6): Active surveillance is preferred; surgery is overtreatment for most

Procedure details – steps, anaesthesia, duration

Before surgery:

• Stop blood thinners (aspirin, clopidogrel, warfarin) as directed (usually 5-7 days before)
• Bowel preparation (enema) the night before
• Antibiotics to prevent infection

Day of surgery:

• Anaesthesia: General anaesthesia (you are asleep)
• Position: Lying on back with legs elevated and slightly apart (lithotomy position), steep Trendelenburg (head down)
• Duration: 2-4 hours
• Hospital stay: 1 day (often outpatient or 23-hour stay)

Step-by-step:

1. 5-6 small incisions are made in the abdomen
2. Robotic arms are attached to the ports
3. The surgeon controls the robot from the console
4. The prostate is dissected free from the bladder and urethra
5. Neurovascular bundles are preserved (nerve-sparing) if possible
6. The prostate and seminal vesicles are removed through one of the incisions
7. The bladder is reattached to the urethra (anastomosis)
8. A urinary catheter is placed

Recovery and downtime

Hospital stay:

• 1 day (often outpatient or 23-hour stay)
• Most patients go home the next morning

Catheter:

• 7-10 days (shorter than open surgery)
• You will go home with the catheter
• Catheter removal is done in the office (painless, takes 1 minute)

Return to activities:

• Walking: Day of surgery
• Desk work: 2-4 weeks
• Light exercise: 4-6 weeks
• Heavy lifting (>10 lbs): 6-8 weeks
• Sexual activity: 6-8 weeks (after catheter removal and healing)

Side effects – ED, incontinence, dry ejaculation

Side effects of robotic prostatectomy are similar to open surgery but may have slightly better recovery rates:

Erectile dysfunction (ED):

• Rate: 20-50% at 2 years (with bilateral nerve-sparing)
• Risk factors: Older age, poor preoperative erections, non-nerve-sparing, diabetes
• Treatment: PDE-5 inhibitors (Viagra, Cialis), penile injections, vacuum devices, implants
• Note: Robotic surgery may offer slightly better potency outcomes due to better visualisation

Urinary incontinence:

• Rate: 5-10% require pads at 12 months
• Types: Stress incontinence (leaking with cough/sneeze) – most common
• Treatment: Pelvic floor exercises (Kegels), urethral sling, artificial urinary sphincter

Dry ejaculation (anejaculation):

• Rate: 100% – no semen is produced after prostatectomy (prostate and seminal vesicles are removed)
• Effect: Orgasm still occurs but is "dry" (no fluid)

Success rates – cancer control

Robotic prostatectomy has excellent cancer control outcomes, equivalent to open surgery:

• 10-year biochemical recurrence-free survival: 70-85% (depends on risk group)
• 10-year prostate cancer-specific survival: >95% for localized disease
• Positive margin rate: 10-20% (cancer at the edge of the specimen – comparable to open)

By risk group:

• Low-risk (Gleason 6): 10-year recurrence-free survival ~85-90%
• Intermediate-risk (Gleason 7): 10-year recurrence-free survival ~70-80%
• High-risk (Gleason 8-10): 10-year recurrence-free survival ~50-70%

Choosing a surgeon – experience matters

Surgeon experience significantly affects outcomes for robotic prostatectomy:

• High-volume surgeons (>50-100 cases/year): Lower complication rates, better cancer control, lower positive margin rates, better functional outcomes (continence, potency)
• Low-volume surgeons (<10 cases/year): Higher complication rates, worse outcomes

Questions to ask a potential robotic surgeon:

• How many robotic prostatectomies have you performed?
• How many do you perform per year?
• What is your positive margin rate?
• What is your complication rate (bleeding, infection, reoperation, conversion to open)?
• What are your continence and potency rates?

Robotic vs. open vs. laparoscopic – comparison table

Good怎么Moderate

Feature	Robotic	Open (Retropubic)	Laparoscopic
Incision size	5-6 small (8-12 mm)	8-10 cm	5-6 small (5-10 mm)
Blood loss	150-250 mL	500-1,000 mL	300-500 mL
Hospital stay	1 day	2-3 days	1-2 days
Catheter duration	7-10 days	14-21 days	10-14 days
Return to work	2-4 weeks	4-6 weeks	3-5 weeks
Nerve-sparing quality如何看待Excellent (3D magnification)
Cost	Higher	Lower	Moderate

Interactive FAQ – Robotic prostatectomy

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Disclaimer: This information is for educational purposes. Robotic prostatectomy is a major surgery with risks. Discuss with a urologist at Vivekananda Hospital to determine if robotic surgery is right for you.