Dr. med. Dirk Manski

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Retropubic Radical Prostatectomy: Surgical Technique and Complications

Indications for Radical Prostatectomy

Radical prostatectomy (RPE) is the gold standard of curative therapy in patients with localized prostate cancer and a life expectancy of at least 10 years. For a detailed description of the surgical treatment indications and results see:

Contraindications to Retropubic Radical Prostatectomy

Absolute contraindications are uncorrected coagulation disorders and untreated urinary tract infections. Further contraindications depend on the surgical risk due to the comorbidity of the patient and the impact of prostatectomy on the life expectancy of the patient.

Surgical Technique of Retropubic Radical Prostatectomy

Preoperative Patient Preparation

Timing of surgery:

A nerve-sparing prostatectomy should be performed no earlier than eight weeks after prostate biopsy and three months after TURP. The interval leads to reduced adhesions between the prostate and neurovascular bundle.

Autologous blood donation:

There is no contraindication from an oncological point of view. Autologous blood donations are associated with substantial costs and, due to the low transfusion risk, are often unnecessary.

Bowel preparation:

The day before surgery: clear liquid diet and an enema before sleeping.

Perioperative antibiotic prophylaxis:

Before skin incision, e.g., 2nd generation cephalosporin. See also section perioperative antibiotic prophylaxis.

Patient positioning:

Supine position with slight hyperextension of the lumbar spine. Disinfection and draping. Insert a 16 CH Foley catheter with 30 ml balloon inflation.

Anesthesia:

General anesthesia is the rule, spinal anesthesia is possible if lymphadenectomy is unnecessary.

Surgical Approach:

Lower midline incision. Cut the linea alba. Blunt dissection of the retropubic space, the peritoneum is pushed off cranially. Identify the iliac vessels, ureters, and tesicular vessels. Insert a self-retaining surgical retractor.


Principles of radical retropubic prostatectomy: development of the retropubic space and exposure of the prostate (1), transection of the puboprostatic ligaments and the santorini plexus (2), transection of the urethra (3), ascending dissection of the prostate (4), dissection of the seminal vesicles (5), urinary bladder neck dissection (6).
figure: Principles of radical retropubic prostatectomy development of the retropubic space and exposure of the prostate (1), transection of the puboprostatic ligaments and the santorini plexus (2), transection of the urethra (3), ascending dissection of the prostate (4), dissection of the seminal vesicles (5), urinary bladder neck dissection (6)

Bilateral Pelvic Lymphadenectomy:

Lymphadenectomy can be omitted in patients with low-risk prostate cancer (PSA <10 ng/ml and Gleason ≤6); otherwise, staging lymphadenectomy is considered standard of care during prostatectomy [fig. Situs before pelvic lymphadenectomy]. Dissection borders are laterally the external iliac artery, caudally the superior ramus of the os pubis, medially the obliterated umbilical artery and the urinary bladder, dorsally the obturator nerve and the pelvic wall, cranially the ureter and the bifurcation of the common iliac artery [fig. template for pelvic lymphadenectomy]. Use a careful dissection technique with bipolar coagulation, application of clips or thin ligatures to lower the complication rate due to lymphoceles. For extended lymphadenectomy, the dissection field reaches the aorta, internal iliac artery, and the presacral lymph nodes. The survival benefit for extensive lymphadenectomy is unclear, but it is an option in high-risk patients.




Templates for pelvic lymphadenectomy: blue area for standard lymphadenectomy, and blue and red area for an extended lymphadenectomy. Common iliac artery (1), common iliac lymph nodes (2), external iliac lymph nodes (3), obturator lymph nodes (4), internal iliac lymph nodes (5), pararectal and sacral lymph nodes (6). Fig. modified from Gray's Anatomy, Lea and Febinger 1918, Philadelphia, USA.
figure Templates for pelvic lymphadenectomy:</strong> blue area for standard lymphadenectomy, and blue and red area for an extended lymphadenectomy.

Approach to the Prostate:

Displace the bladder and peritoneum cranially and posteriorly with the retraction system. Cleanse the prostate from covering fatty tissue, coagulate, and transect interfering superficial veins [fig. RRP (1)]. Coagulate and transect the puboprostatic ligament after incision of the endopelvic fascia [fig. puboprostatic ligament]. Bluntly expose the apical area of the prostate with a dissecting swab.


Transection of the Dorsal Venous Complex:

Use a Babcock clamp to bunch the dorsal venous plexus over the apex of the prostate and place a suture ligation [fig. DVC 1]. Repeat the procedure for the venous plexus on the prostate near the bladder neck against retrograde bleeding. Transect the dorsal venous complex gradually down to the urethra [fig. DVC 2], close bleeding vessels with bipolar coagulation or with sutures. The dissection line must find the plane just below the dorsal venous complex. Do not penetrate the prostate; there is a risk of R1 resection in tumors of the anterior fibromuscular stroma [fig. RRP (2)].




Preservation of the Neurovascular Bundles:

Open the fascia overlying the prostate to isolate the nerve bundle laterally [fig. nerve sparing]. Use clips to stop bleeding before cutting the fascia. Depending on the patient's wishes and tumor stage, nerve-sparing can be performed to a varying extent; see the following figures. The intrafascial technique results in better erectile function, but the additional risk for R1 resection is controversial.



Interfascial technique: standard technique for nerve sparing. Open the layer between the prostatic and endopelvic fascia; the Denovilliers fascia is left on the rectum. DVC=dorsal venous complex. Endop. F.=endopelvic fascia (visceral sheet covers prostate, parietal sheet covers the levator ani muscle). PF=prostatic fascia. DF=Denonvilliers fascia. NVB=neurovascular bundle with branches of the cavernous nerve.
figure: Interfascial technique: standard technique for nerve sparing. The layer between the prostatic fascia and the endopelvic fascia is opened, the Denovilliers fascia is left on the rectum.

Intrafascial technique: dissect the layer directly on the prostate capsule; it is necessary to open the prostatic fascia and the visceral sheet of the endopelvic fascia ventrally next to the venous plexus. Endop. F.=endopelvic fascia (visceral sheet covers prostate, parietal sheet covers the levator ani muscle). PF=prostatic fascia. DF=Denonvilliers fascia. NVB=neurovascular bundle with branches of the cavernous nerve.
figure: Intrafascial technique of nerve sparing during prostatectomy: the layer directly on the prostate capsule is sought, it is necessary to opening the prostatic fascia and the visceral sheet of the endopelvic fascia ventrally next to the venous plexus.

Division of the Urethra:

Transect the ventral portion of the urethra until the catheter is visible [fig. RRP (3)]. Place anastomotic sutures at the 9, 11, 1, and 3 o'clock positions (double-armored sutures such as PDS 2-0 or Vicryl 2-0 with 5/8 needle) [fig. anastomosis]. Clamp the bladder catheter in the opened urethra, discard the valve piece, and use the intact balloon inflation of the catheter as a mobilization aid for further dissection. Transect the dorsal urethra and the dorsal portion of the external sphincter, which attaches to the prostate apex. Place two anastomotic sutures at the 5 and 7 o'clock positions. Additional sutures may be placed through the dorsal sphincter apparatus, which later grasp the bladder neck and Denovillier fascia, to improve early continence and tightness of the anastomosis (Rocco et al., 2009).



Ascending Dissection of the Prostate:

Develop the layer between the rectum and the prostate with blunt and sharp dissection. Separate the neurovascular bundle from the prostate with the overholt, transect vessels to the prostate between clips [fig. pedicles] [fig. RRP (4)]. Retract the prostate cephalad using the catheter to identify the prostate pedicles and transect the pedicles step by step between clips.



Dissection of the Seminal Vesicles:

The ascending dissection exposes the seminal vesicles, which become visible under the Denonvilliers fascia. After incision, mobilize the seminal vesicles and clip and transect supplying vessels [fig. seminal vesicle dissection]. Stay close to the seminal vesicle; otherwise, injury to the neurovascular bundle lateral to the tip of the seminal vesicles is possible [fig. RRP (5)]. Isolate and transect both vas deferens between clips. After complete mobilization, retract the seminal vesicles and both vas deferens cephalad to expose the dorsal bladder neck. Dissect the bladder neck with curved (Satinsky) scissors.



Descending Dissection of the Prostate:

The descending dissection can replace the ascending dissection at any time if the anatomy is unclear; some authors also promote the primary descending preparation. Prior to primary descending dissection, the neurovascular bundle is isolated by an incision of the fascia overlying the prostate, which is analogous to ascending dissection.

Bladder Neck Dissection:

Spare or resect the bladder neck, depending on the tumor stage. The border between the bladder neck and the prostate appears clearly with traction on the catheter [fig. bladder neck] [fig. RRP (6)]. Bipolar coagulation is sufficient for bleeding. The circular muscle fibers of the bladder neck help to find the correct plane. Bladder neck reconstruction is unnecessary after sparing the bladder neck during the final dissection steps. If the bladder neck is too wide, it is narrowed by sutures at 6 o'clock ("tennis racket suture") and the bladder mucosa is inverted with thin sutures. Beware of the ureteric orifices.



Vesicourethral Anastomosis:

Insert a new 20 CH Foley catheter into the bladder. Place the anastomotic sutures (already prepared during apical dissection) at the corresponding bladder neck location [fig. anastomosis]. Knot the sutures from dorsal to ventral. Irrigate the bladder after anastomosis to eliminate clots and to check for anastomosis leakage.



Wound Closure:

Postoperative Care after Retropubic Radical Prostatectomy

Complications of Retropubic Radical Prostatectomy

Bleeding:

The blood loss after radical retropubic prostatectomy is around 700 ml, the transfusion rate is less than 5%.

Lymphocele:

The frequency of lymphoceles depends on the extent of lymphadenectomy [fig. pelvic lymphoceles]. Avoid lymphoceles by careful ligation or clipping of the lymphatic vessels, limited lymphadenectomy, sparing the lymphatic vessels of the lower extremity along the external iliac artery, and injection of heparin exclusively into the upper extremity. Therapy consists of percutaneous drainage or laparoscopic fenestration.


Pelvic CT with lymphoceles after radical prostatectomy: on both sides of the bladder cystic masses are visible along the iliac vessels (left > right). With kind permission, Dr. G. Antes, Kempten.
figure: Pelvic CT with lymphoceles after radical prostatectomy

Rectal Injury:

If noted during the prostatectomy, close the rectal injury in two layers. If possible, cover the suture with omentum majus. A temporary anus praeter is necessary in case of insufficiency of the repair. Risk factors for rectal injury include advanced tumor stage, previous surgery or radiotherapy of the prostate. Rectal injury or impaired healing can also lead to a rectourethral fistula. Clinical signs include pneumaturia and flocculent urine. Fecal incontinence is rarely possible.


Retrograde urethrography of a rectourethral fistula after radical prostatectomy. With kind permission, Prof. Dr. R. Harzmann, Augsburg.
figure: Retrograde urethrography of a rectourethral fistula after radical prostatectomy

Urinary Incontinence:

Urinary incontinence is common immediately after surgery; you can expect spontaneous improvement for 1--2 years. In the long term, about 10% of patients require more than one pad. Pelvic floor exercises (with or without biofeedback) help improve early continence, but the effect on late continence is unclear (MacDonald et al., 2007). Risk factors for postoperative incontinence include age over 70 years, previous TURP, or advanced tumors. For urinary incontinence treatment, see section male stress urinary incontinence.

Erectile Dysfunction:

Prostatectomy results in significant deterioration of erectile function. Controlled studies have described long-term potency rates as low as 30% after bilateral nerve preservation. ED Therapy with oral phosphodiesterase inhibitors additionally enables sexual intercourse in 20% of patients (50% overall). Long-term postoperative potency may be improved by early administration of oral phosphodiesterase inhibitors. Whether early administration should be permanent or given as needed is controversial (Montorsi et al., 2008). Predictors of postoperative potency are bilateral nerve-sparing, sexually active young patients with good preoperative potency, PSA <10 or Gleason <8 (low tumor burden).

Inguinal Hernia:

The risk of inguinal hernia is up to 15% after prostatectomy versus 3% in the control group without surgery, inguinal hernia usually develops within the first two years (Zhu et al., 2013). The prospective-controlled LAPPRO study found no relevant differences (7.3–8.4% hernia risk) after open-surgical or robotic-assisted laparoscopic prostatectomy (Nilsson et al., 2022).

Further Complications:

Wound infections, anastomotic stricture, anastomotic leakage, ureteral injury, penile shortening, ileus. Cardiovascular complications: thrombosis, pulmonary embolism, myocardial infarction. Mortality is 0.4%, and the major cause is pulmonary embolism.


Anastomotic stricture after radical prostatectomy.
figure: Anastomotic stricture after radical prostatectomy






Index: 1–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

References

Graefen u.a. 2006 GRAEFEN, M. ; WALZ, J. ; HULAND, H.: Open retropubic nerve-sparing radical prostatectomy.
In: Eur Urol
49 (2006), Nr. 1, S. 38–48

Montorsi, F.; Brock, G.; Lee, J.; Shapiro, J.; Poppel, H. V.; Graefen, M. & Stief, C. Effect of nightly versus on-demand vardenafil on recovery of erectile function in men following bilateral nerve-sparing radical prostatectomy.
Eur Urol, 2008, 54, 924-931.

Rocco, F. & Rocco, B. Anatomical reconstruction of the rhabdosphincter after radical prostatectomy.
BJU Int, 2009, 104, 274-281.

J. A. Smith, S. S. Howards, G. M. Preminger, and R. R. Dmochowski, Hinman’s Atlas of Urologic Surgery Revised Reprint. Elsevier, 2019.

Zhu, S.; Zhang, H.; Xie, L.; Chen, J. & Niu, Y. Risk Factors and Prevention of Inguinal Hernia after Radical Prostatectomy: A Systematic Review and Meta-analysis.
J Urol, 2012.



  Deutsche Version: Technik und Komplikationen der retropubischen radikalen Prostatektomie