1 chapter 25 genitourinary surgery. 2 elsevier items and derived items © 2010, 2007 by saunders, an...
TRANSCRIPT
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1
Chapter 25Chapter 25
Genitourinary SurgeryGenitourinary Surgery
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2 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Review terms and definitions listed at beginning of chapter
Use your medical dictionary if necessary
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3 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Surgical areas Female
• Urethra
• Bladder
• Ureters
• Kidney
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4 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Surgical areas Male
• Urethra
• Bladder
• Ureters
• Kidney
• Prostate
• Testicles
• Penis
• Accessory structures
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Genitourinary
Common surgical approaches Transurethral
• Cystoscopy
• Ureteroscopy
Open surgery Minimally invasive
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6 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Kidney
Anatomy of the kidney.(From Brundage DJ: Renal disorders, St Louis, 1992, Mosby)
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Genitourinary
Kidney Nephron
• Functional filtering unit of the kidney
Kidney stones• Precipitation of specific salts from the filtrate and
the urine
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Genitourinary
(From Thibodeau G, Patton K: Anatomy and physiology, ed 6, St Louis, 2007, Mosby
Urinary bladder.
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9 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Urethra Female
• Originating at the trigone
• Ending at the meatus
Male• Originating at the trigone
• Prostatic urethra
• Membranous urethra
• Cavernous urethra
• Ending at the meatus
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10 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Male reproductive organs.
(From Herlihy B, Maebius NK: The human body in health and illness, ed 2, Philadelphia, 2003, Saunders.)
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Genitourinary
Scrotum Lies at base of penis Protects the testicles
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12 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Testicles Epididymis Vas deferens Seminal vesicles Prostate gland Bulbourethral glands
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13 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Penis Male copulatory organ Highly vascular
• Flaccid except during sexual stimulation
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Genitourinary
Vas deferens Forms a portion of the path that the seminal fluid
travels Continues across bladder and ureter
• Meets opening of seminal vesicle and forms ejaculatory duct
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15 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Kidney dialysis Removal of waste products from the blood of the
patient with chronic kidney disease or end-stage renal disease
• Hemodialysis
• Peritoneal
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16 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Diagnostic tests Urinalysis Blood test Glomerular filtration rate Blood urea nitrogen (BUN) Tissue biopsy Imaging studies
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17 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Positioning Lithotomy
• Cystoscopy
Supine• Bladder, prostate
Lateral• Kidney and ureters
Prone• Nephroscopy
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18 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Open Instruments
Open GU instruments. Left to right.A, Fine hemostatic forceps. Satinsky clamp. Herrick kidney clamp. Satinsky vascular clamp. Right-angle clamp. Mayo kidney clamp. (From Tighe SM: Instrumentation for the operating room, ed 6, St Louis, 2003, Mosby.)
B, Nephrectomy and ureteroplasty. Left to right. Metzenbaum scissors. Potts scissors, probe and grooved director. Two nerve hooks. Two love nerve retractors, straight and right angle. Two little retractors. Four vein retractors.(From Tighe SM: Instrumentation for the operating room, ed 6, St Louis, 2003, Mosby.)
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19 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
A,Cystourethroscope. B, Cystoscope and light guide.(From Tighe SM: Instrumentation for the operating room, ed 6, St Louis, 2003, Mosby.)
Endoscopic Instruments
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20 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
The rigid cystourethroscope Fiberoptic light cable and source
• Light cable connects cystoscope to fiberoptic light source.
• Light sources used are same as those in other endoscopic procedures and include xenon and halide
• Cables are fiberoptic or liquid light
• As with all endoscopic equipment, light cords and camera cords should be handled carefully
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21 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
The rigid cystourethroscope (cont.) Obturator
• Metal rod with blunt, rounded tip
• Prevents end of sheath from abrading mucosal lining of urethra as it is inserted
• May be either straight or deflecting
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22 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Resectoscope Transurethral instrument used to remove small
fragments of tissue• Endoscope
• Sheath
• Obturator
• Electrical loop
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23 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
(From Tighe SM: Instrumentation for the operating room, ed 6, St Louis, 2003, Mosby.)
Left to right, enlarged tips:
- Cutting electrode with round wire
- Cutting electrode with pointed end
- Coagulating electrode with ball end
Electrosurgical Unit (ESU)
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24 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Urinary CathetersA, Conical-tip urethral catheters.
B, Robinson urethral catheter.
C, Whistle-tip urethral catheter.
D, Coudé hollow olive-tip catheter.
E, Malecot self-retaining, four-wing urethral catheter.
F. Malecot self-retaining, two-wing catheter.
G, Pezzer self-retaining drain, open-end head, used for cystotomy drainage.
H, Foley-type balloon catheter.
I, Foley-type, three-way balloon catheter.
(Modified from Walsh PC, Retik AB, Vaughan ED, et al: Campbell's urology, ed 8, Philadelphia, 2002, Saunders.)
Catheters
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25 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Catheters (cont.) In-dwelling urinary catheters
• Most hospitals use prepackaged one-time-use catheters
• Catheter is hollow tube of flexible synthetic material
• Variety may be used during genitourinary (GU) procedures
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26 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Ureteral Catheters A. Round-tip
B. Olive-tip
C. Spiral-tip
D. Conical- or "bulb-tip"
(B from Walsh PC, Retik AB, Vaughan ED, et al: Campbell's urology, ed 8, Philadelphia, 2002, Saunders.)
Catheters (cont.)
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27 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Catheters (cont.) Ureteral catheters
Ureteral stent with tether.(A from Nagle GM: Genitourinary surgery: Perioperative nursing series, St Louis, 1997, Mosby.)
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28 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Equipment Electrosurgical unit Microscope Laser
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29 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Transurethral surgery Cystoscopy
• Use of a rigid or flexible cystoscope
Ureteroscopy• Use of a rigid or flexible ureteroscope
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30 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Diagnostic cystoscopy Goal of cystourethroscopy (cystoscopy) –
to examine inside of urinary bladder and urethra for evidence of disease
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31 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Ureteral dilation and urethrotomy Urethra is dilated to relieve a stricture
• Phillips filiforms and followers
• Graduated sounds
• Balloon dilators
Urethrotomy—Small incision made in internal urethra to release scar tissue
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32 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Management of bladder calculi using the
Cystourethroscope Bladder calculi or stones are removed because of
pain or urinary blockage
Lithotrite Specialized instrument that grasps and crushes
the stone
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Genitourinary
Management of Bladder Calculi
Top, left • Mayo dissecting scissors, curved.
Bottom, left to right• Crile hemostatic forceps, straight.• Crile hemostatic forceps, curved.• Five Van Buren urethral sounds,
male, sizes 8 to 16.
Right, top to bottom• Two nonperforating towel forceps.• Ellik evacuator.
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Genitourinary
(From Rothrock JC: Alexander’s care of the patient in surgery, ed 17, St. Louis, 2007, Mosby.)
Transurethral Resection of the Prostate (TURP)
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Genitourinary
Transurethral Resection of the Prostate (TURP) (cont.)
Left to right, enlarged tips: • Cutting electrode with round wire.
• Cutting electrode with pointed end.
• Coagulating electrode with ball end.
(From Tighe SM: Instrumentation for the operating room, ed 6, St Louis, 2003, Mosby.)
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Genitourinary
Tissue biopsy Performed to determine if tissue specimen is
benign or malignant
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37 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Tumor removal Removal of neoplasm can be performed by
fulguration or by using the holmium:YAG (yttrium aluminum garnet) laser.
Laser precautions must be observed
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Genitourinary
Circumcision in the adult Removal of the prepuce (foreskin), which is done
to improve and to abide by cultural and religious reasons.
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39 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Chordee repair A congenital downward curvature of the penis
cause by a band of connective tissue between the opening of the penis and the glans penis
Release of the connective tissue allowing the penis to assume a normal position
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40 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Incisions are approximated, and the intervening strip of tunica albuginea and suture knots are buried.(From Walsh PC, Retik AB, Vaughan ED, et al: Campbell's urology, ed 8, Philadelphia, 2002, Saunders.)
Hypospadias Repair
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Genitourinary
A, Preparation of the reservoir. B, Placement of the reservoir and cuff in the perineal incision.Courtesy American Medical Systems, Minnetonka, Minn.
Insertion of Penile Implant
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Genitourinary
Insertion of Penile Implant (cont.)
C. The reservoir and the pump are filled with Hypaque to the appropriate volume. D. The pump is tested.Courtesy American Medical Systems, Minnetonka, Minn.
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43 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Varicocelectomy High ligation of gonadal veins of testes
• To reduce venous backflow of blood into the venous plexus of the testes and to improve spermatogenesis
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44 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Hydrocelectomy.
(Rothrock J: Alexander’s care of the patient in surgery, ed 17, St Louis 2007, Mosby)
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45 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Orchiectomy Surgical removal of one or both testicles
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Genitourinary
Vasectomy.
(From Walsh PC, Retik AB, Vaughan ED et al: Campbell’s urology, ed 8, Philadelphia, 2002, WB Saunders).
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Genitourinary
Vasovasostomy Reversal of the vasectomy by surgical
anastomosis of the vas deferens to restore continuity of flow of sperm
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Genitourinary
Implantation of testicular implants Following an orchiectomy, testicular implants are
placed via a suprapubic approach
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Genitourinary
Suprapubic cystostomy Insertion of a suprapubic catheter via a
percutaneous or open approach into the bladder for drainage of urine
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Genitourinary
Cystectomy Total or partial removal of the bladder.
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Ileal Conduit Procedure for urinary diversion where a functional
bladder is constructed with a loop of bowel that is brought out of the abdominal wall
(From Garden O, Bradbury A, Forsythe J, Parks R: Principles and practice of surgery, ed 5, Edinburgh, 2007, Churchill Livingstone Elsevier.)
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Vesicourethral suspension of the bladder Performed to treat urinary stress incontinence in
the female • When caused by reduction in the angle
at the urethrovesical junction
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Vesicourethral suspension (Marshall-Marchetti-Krantz) procedure.
(From Walsh PC, Retik AB, Vaughan ED et al: Campbell’s urology, ed 8, Philadelphia, 2002, WB Saunders)
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54 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Pubovaginal sling Suspension of the bladder neck with a biosynthetic
strip or fascia graft that is attached to the abdominal wall
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Genitourinary
Types of prostatectomy Prostatectomy is performed to treat benign
prostatic hypertrophy (BPH) and for cancer of the prostate
• Perineal prostatectomy
• Suprapubic prostatectomy
• Retropubic prostatectomy
• Laparoscopic or robot-assisted prostatectomy
• Transuretheral resection prostatectomy (TURP)
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Perineal Prostatectomy
A, Incision through the perineum, B, Exposure of the central tendon. C, The preprostatic fascia (gray) has been incised to expose the prostatic capsule. D, Mobilization of the vascular pedicle. E, The vascular bundle is severed. F, Closure of the bladder neck. (Rothrock J: Alexander’s care of the patient in surgery, ed 17, St Louis 2007, Mosby)
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Suprapubic prostatectomy Removal of the prostate through a
suprapubic incision
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Genitourinary
Retropubic prostatectomy Patient is placed in supine position, prepped, and
draped as for suprapubic prostatectomy In this approach, bladder is not entered for access
to prostate
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Genitourinary
Ureteral diversion Pyeloplasty
• Strictures in ureter are relieved by fine electrosurgical or laser devices introduced through the endoscope
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Ureteral diversion (cont.) Urethrotomy
• If urethrotomy (release of structure) is planned, optical urethrotome is inserted into stricture, and blade incises scar tissue
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Genitourinary
Ureteral diversion (cont.) Ureteroplasty
• Reconstruction of the ureter
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Ureteral diversion (cont.) Ureterostomy
• Anastomosis of the ureter with another hollow structure to provide continuity
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Ureteral diversion (cont.) Transureterureterostomy
• Crossing one ureter to another and creating an anastomosis between the two ureters
• May also be referred to as a ureterureterostomy
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Genitourinary
Ureteral diversion (cont.) Vesicoureterostomy
• Reimplantation of the ureter into the bladder
• Helps prevent subsequent renal failure
Causes of renal obstructions• Congenital malformations
• Stasis
• Metabolic imbalances
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65 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Percutaneous nephrolithotomy (PCNL) Insertion of a nephroscope via a small incision in
the skin for the purpose of removal of stones from the kidney or the upper ureter
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66 Elsevier items and derived items © 2010, 2007 by Saunders, an imprint of Elsevier Inc.
Genitourinary
Simple nephrectomy (flank approach) Removal of one kidney
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Genitourinary
Laparoscopic radical nephrectomy Removal of the kidney and lymph nodes via a
laparoscopic approach
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Kidney transplant Removal of kidney from living donor or cadaver Implantation of kidney to surgical patient Performed for acute or chronic end-stage renal
failure
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Genitourinary
Kidney transplant (cont.) Ideal tissue donor
• Young
• Free of drugs and alcohol
• History is known
• Tissue and blood type match the recipient’s
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Adrenalectomy Adrenal diseases often life threatening Procedure has potential for many postoperative
metabolic complications