Complications of Robotic Partial Nephrectomy: Expect the ......Complications of Robotic Partial...
Transcript of Complications of Robotic Partial Nephrectomy: Expect the ......Complications of Robotic Partial...
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Complications of Robotic Partial Nephrectomy:
Expect the Unexpected
Li-Ming Su, MD David A. Cofrin Professor of Urology, Associate Chairman of Clinical Affairs, Chief, Division of Robotic and Minimally Invasive Urologic
Surgery, University of Florida College of Medicine; Gainesville, Florida
Objectives: • Discuss the indications, operative set up, and surgical technique of
robotic partial nephrectomy • Interpret the published literature regarding methods to reduce
warm ischemia during partial nephrectomy • Describe surgical techniques to reduce warm ischemia during
robotic partial nephrectomy • Describe new technologies that may aid in assessing and reducing
warm ischemia
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Complications ofRobot-Assisted Partial Nephrectomy:
Expect the Unexpected
U N I V E R S I T Y of
FLORIDA UFThe Foundation for The Gator Nation
Li-Ming Su, M.D.David A. Cofrin Professor of Urology
Chief, Division of Robotic and Minimally Invasive Urologic SurgeryDepartment of Urology
University of Florida College of Medicine
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Complications ofRobot-Assisted Partial Nephrectomy:
Shock and Awe
U N I V E R S I T Y of
FLORIDA UFThe Foundation for The Gator Nation
Li-Ming Su, M.D.David A. Cofrin Professor of Urology
Chief, Division of Robotic and Minimally Invasive Urologic SurgeryDepartment of Urology
University of Florida College of Medicine
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Accidents do happen…
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Despite good intentions or planning…
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Risks exists…
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Outline
• Published Complication Rates of RAPN
• Intraoperative Complications– Intraoperative Bleeding– Tumor Violation
• Postoperative Complications– Urine Leak– Pseudoaneurysm
• Examples of Miscellaneous Complications
• Practical Tips on Avoiding Complications
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Published Complication Rates
• Multi-institutional review of complications
RAPN UF• Transfusion rate 4.0% 1.0%• Positive margins 1.6% 1.3%• Angioembolization 0.4% 0.4%• Urine leak 1.6% 1.0%
Spana G et al. J Urol 186: 417, 2011
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WARNING!
DUE TO THE GRAPHIC CONTENT OF THIS VIDEO PRESENTATION
VIEWER DISCRETION IS ADVISED
(NOTE: No kidney was lost in any of the following cases)
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Intraoperative Bleeding
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Venous Back Bleeding #1
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Venous Back Bleeding #1
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Venous Back Bleeding #1
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Venous Back Bleeding #2
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Arterial Bleeding #1
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Arterial Bleeding #2
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Arterial Bleeding #2
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Parenchymal Bleeding: Management
1. Apply pressure with instrument or gauze2. Increase insufflation pressure3. Skillful use of experienced assistant4. If arterial: consider missed artery and/or
additional bulldog clamps 5. If venous: clamp or unclamp vein6. Have sutures (rescue) and clips available7. Test function of needle drivers BEFORE
clamping renal artery8. Be prepared to suture efficiently
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Critical Role of the Assistant
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Intraoperative Bleeding: Prevention
1. Study all phases of preop CT/MRI – Multiphase CT best (arterial, venous, delayed) – Review all views (axial and coronal)– Pay special attention to vascular anatomy
2. Dissect and skeletonize all arteries and veins
3. Consider vessel loops for quick intraop identification of artery(ies) and vein(s)
4. Consider multiple bulldog clamps on arteries
5. Avoid areas of vascular calcification
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Vascular Bleeding
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Vascular Bleeding: Management
1. Don’t panic2. All hands on deck 3. Think and work quickly4. Blood available in the room5. Apply pressure6. Increase insufflation7. Have needle drivers, suture, endo GIA8. Consider open conversion (rare)9. Last resort is radical nephrectomy (almost
never necessary)
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Tumor Violation
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Tumor Violation #1
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Tumor Violation #2
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Tumor Violation: Management
1. Optimize hemostasis of operative field
2. Attempt to re-excise deeper margin
3. Consider frozen section
4. Consider open conversion
5. Last resort is radical nephrectomy
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Tumor Violation: Root Causes
1. Poor preoperative planning – Review of CT for size, location, depth of tumor
2. Poor intraoperative localization – Use and interpretation of lap ultrasound findings
3. Poor vascular control and hemostasis
4. Insufficient margin of excision – Secondary to enhanced magnification
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Tumor Violation: Prevention1. Study all phases of preop CT/MRI (both preop and
intraop)
2. Measure depth of endophytic portion of tumor
3. Familiarity with intraoperative ultrasound– Laparoscopic or drop-in probe
4. Consider having ultrasonographer in OR
5. Use of Tile Pro feature on daVinci Si
6. Expose wide region of parenchyma around tumor
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Drop-In Ultrasound Probe
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Urine Leak
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Excretory phase 2nd Delayed phase
Urine Leak: Presentation
• Postop ileus• High JP output (elevated drain creatinine level)• Acute rise in serum creatinine
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Urine Leak: Management
1. Retrograde 2. Ureteral Stent
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Leak resolved with:1) Ureteral stent
(2-4 weeks)
2) JP pulled back andplaced to gravity (until output minimal)
3) Foley (until JP minimal)
Urine Leak: Management
Before
After
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Urine Leak: Prevention
1. Anticipate entry 2. Selective closure
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Pseudoaneurysm
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Presentation: Delayed Gross Hematuria
Arterial blush Pseudoaneurysm
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Pseudoaneurysm: Management
• Have high index of suspicion if any sign of postop gross hematuria
• Trial of bedrest and transfusion if patient stable
• Have a low threshold to perform renal angiogram
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Management: Selective Angioembolization
Pre-embolization Post-embolization
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Pseudoaneurysm: Prevention
1. Have good vascular control and hemostasis2. Cauterize cortical edge3. Running suture along base of renal defect4. Sliding clip renorrhaphy (Benway and Bhayani, 2010)
• Superior closing tension vs. other methods• 32.7 Newtons (Hem-o-lok) vs. 16.7 (Lapra-Ty) vs. 11.3 (Sutures only)
Benway BM and Bhayani SJ Endourol 24: 605, 2010
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Miscellaneous Complications
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Paralyzed Assistant
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Satinsky Clamp
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Satinsky Clamp
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4th Arm Misadventure
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How to Minimize Complications
• Build your robotics team (esp. bedside assistant and surgical tech)
• Gain experience with other robotic procedures first (e.g. RALP, pyeloplasty, nephrectomy)
• Begin with low complexity renal tumors (i.e. small < 4 cm, exophytic, anterior)
• Study your CT/MRI thoroughly (all phases, axial, coronal, arterial, delayed)
• Avoid selective arterial or no ischemia technique in the beginning of your experience
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How to Minimize Complications
• Develop a checklist of equipment and sutures and review preop and intraop
• Perform a ‘time out’ - rehearse each step and develop a backup plan for adverse events
• Educate and inform your patient about risks
• Be prepared and expect the unexpected
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Poor preparation = BAD outcome
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An Ounce of Prevention…
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Thank You