inguinal hernia investigation and treatment · earle shouldice early ambulation local anaesthesia...
TRANSCRIPT
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Inguinal HerniaInvestigation and Treatment
ESS CMEBanff 2020
Roy Kirkpatrick
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Goals and ObjectivesOutline history and evolution of hernia careDiscuss appropriate investigation of hernias
Discuss the global burden of disease and innovative approaches to meeting the burden
Evaluate the controversy around the use of mesh in hernia repairReview Risk Management Strategies for Inguinal Hernia
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CONFLICTS OF INTEREST.
I have no commercial affiliations nor sponsorship
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History
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Amyand’s Hernia
1735First Documented Successful
Appendectomy150 Years Before McBurney and
Groves
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Pott’s Disease
Pott’s Fracture
Chimney Sweeps’ Disease
Treatise on Ruptures 1756 (Written While Convalescing From a Compound Tibial Fracture) - Debunked Charlatans
“All that can be done by surgery…is to replace the prolapsed body…in the belly…and to prevent them from flipping out again.”
4 kinds of hernia: Children, Chronic,Incarcerated, Strangulated
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August Richter 1778
Truss -> tight so as to cause inflammation and contraction of the neck of the sac
Strangulated Hernia - “an ounce of epsom salts… infusion of camomile flowers… linseed oil… lemon juice… syrup of red poppies… purified opium…spoonful every quarter-hour until it operates”
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Edoardo Bassini 1884
Lowered Recurrence Rate From 100% to 10%
High Ligation
Posterior Wall Repair
Reconstitute Internal Ring Lateral to External Ring to Maintain Obliquity of the Canal
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William Gallie 1921
Barrie, Ontario
University of Toronto
American College of Surgeons
Tension Free Repair With “Living Sutures”
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Earle Shouldice
Early Ambulation
Local Anaesthesia
Specialized Hospital
Multilayer Repair
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Chester McVay
Cooper’s Ligament Repair
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Global Burden of Disease
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20 Million Repairs Annually27- 43% of Adult Males3-6% of Females9.3 Disability Associated Life Years Averted Per Repair -$63 per DALY avertedClub Foot $350 (Africa)Childhood Immunization $438 (Caribbean)Oral RehydrationAt Home Anti-retroviral Therapy for HIV/AIDS
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Unique Solutions
Hernia Camps
Mosquito Mesh
CNIS Structured Hernia Course
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Cost -Effectiveness Analysis of Inguinal Hernia Repair Performed With Mesh by
Medical Officers and Surgeons in Ghana
Volta Regional Hospital242 Operations
Lichtenstein Repair $104 (GMO) vs $105(Surgeon)
$40 - $49/DALY Averted
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Risk FactorsNOT Constipation, Prostatism, Occasional Lifting
Smoking
Positive Family History
Collagen Disease
AAA
Previous Appendectomy or Prostatectomy
Ascites
COPD
Long Term Heavy Work
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“They Say That Hard Work Never Killed
Anyone, But I Thought Why Take The
Chance?”
“Smoking Cessation is the Only Sensible Advice
With respect to Risk Reduction”
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Diagnosis
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Groin Swelling and PainSWELLING Femoral Hernia
Lymph Node
Aneurysm
Saphenous Varix
Abscess
Soft Tissue Tumour (Endometrioma)
Scrotal Pathology
PAIN Osteitis Pubis
Low Back Pain - Radiation
Adductor Tendonitis
Hip Pain
Ileopectineal Bursitis
Endometriosis
PSEUDO-RECURRENCE
Seroma
Lipoma of the Cord
Plug
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Physical Examination
92-93% Sensitivity and Specificity
Usually Sufficient
No Value Distinguishing Direct vs Indirect
Femoral Hernia
“If You Can’t, or Don’t Want, to do a Physical Examination - Ask Someone Who Can”
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“Sometimes the Best Test is a Consultation”Malcolm Wilson
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Plain FilmsHip Disease
Osteitis Pubis
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European Hernia Society Algorithm for Obscure Pain or Swelling
Ultrasound (If Expertise Available)
If Ultrasound Negative -> MRI With Valsalva
If MRI Negative -> Consider Herniography
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Ultrasound100% Sensitive in Patients Known to Have Hernias
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“Don’t Order a Routine Ultrasound for Umbilical and/or Inguinal Hernia”
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“Ultrasonography is a useful non-invasive adjunct to physical examination. In clinical occult groin hernia, ultrasound specificity in relation to surgical exploration is 81-100%, it’s sensitivity is 33% and up to 100% in clinical diagnosis of a groin hernia.”
“In everyday practice, the sensitivity and specificity of ultrasonography for diagnosing inguinal hernia is low.”
European Hernia Society 2009
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CTSpecificity 83%, Sensitivity 67-83%
“CT does not have a significant role in the diagnosis of inguinal hernia”
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Radiologic Reporting and Interpretation of Occult Inguinal
Hernia (JACS November 2019)
“Dynamic Scanning” (CT or MRI) With ValsalvaRadiologist “Over-reading” Improves Accuracy From
35% to 79%Look at it Yourself
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MRISensitivity and Specificity 94%
Other PathologiesSports Related Injuries
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Herniography
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Herniography
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Originally described at HSC for occult hernias and contralateral hernias
Sensitivity 100%, Specificity 98-100% for Occult Hernias
Identifies a hernia in 12-54% of cases where no other modality has been successful
Identifies hernia in 25% of athletes with long standing groin pain
Complications in 0-4.3% (Contrast Allergy, Intestinal Injury, Abdominal Wall Hematoma)
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Laparoscopic Assessment of Contralateral Side
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Treatment
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StrangulatedREDUCE IT
Analgesia
Trendelenberg Position
Ice
Direct the Hernia Content Back Into the Inguinal Canal(don’t splay it over the external ring
? Role of Laparoscopy
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Incarcerated or Symptomatic
FIX IT
Elderly (>65!) and/or Infirm -> Marked Increase in Morbidity and Mortality (up to 21%) If Operated as an Emergency
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Assymptomatic
Elective Surgery < .5% Operative Mortality
Emergency Surgery > 5% Operative Mortality
“Most Strangulations Occur in People Who Didn’t Know They Had a Hernia”
Rural/Remote Military Exotic Tourism
Two Major Trials of Watchful Waiting -> Crossover in 25%, Small Numbers of Adverse Events
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“Avoid Repair of Minimally Symptomatic Inguinal Hernias, Where Appropriate, By Offering an Option of Watchful Waiting for Up to Two Years”
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Choice of Operations
Open Non-Mesh
Open Mesh
Laparoscopic
Robotic
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Open Non-Mesh
Bassini
McVay
Shouldice
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150 Repairs per WeekLowest Rates of Recurrence and Post-op Pain When Performed at Shouldice Hospital
Takes LongerIncreased Length of Stay
“Cherry Picking”
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Shouldice Continued
Cochrane Review Showed Overall Higher Recurrence Rate for Shouldice Compared With Open Mesh Repair
No Difference Re: Chronic Pain, Complications, Post-op Stay
Best Non-Mesh Repair for Patients Who Refuse Mesh or in Low Resource Settings (HerniaSurge International Guidelines)
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Open Mesh RepairsLichtensteinPlug Alone or Plug and PatchTrans Inguinal Pre-Peritoneal (TIPP) No Better Than LichtensteinDecreased Recurrence and Chronic Pain Compared to Non-Mesh (Including Shouldice)Earlier Return to WorkDecreased OR Time and Hospital StayChronic Pain Commoner in Cases Done By Residents
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Plug or No Plug?
More Foreign Material
Pseudo-recurrence and Migration
Plug Only Technique : Faster, Cheaper,
Lower Overall Complication Rate (?)
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Laparoscopic
Decreased Wound Infection, Hematoma, Length of StayIncreased Serious Complications (Major Vascular and Visceral Injuries)Longer OR TimeIncreased Hospital Cost ? Decreased Societal CostDecreased Recurrence Rate Compared With Open Non-Mesh, No Better (Perhaps Slightly Worse) Than Open Mesh RepairsDecreased Pain Initially, Evens Out Over TimeIncreasingly Utilized in Paediatric Surgery
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Robotic Hernia Repair
Average Cost $5517 VS $3269 For Laparoscopic
COI Not Declared in Most Studies Showing BenefitIncreased OR Time. No
Benefit For PatientsErgonomic Benefit for
Surgeons
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ComplicationsRecurrence
Wound Infection
Chronic Pain (Neurogenic, Mesh Related) -Higher Rate When Residents Operate
Bowel Obstruction
Fistula
Urinary Retention
Visceral Injury
Mesh Complications
Vascular Injury
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Vascular InjuriesDeep Inferior Epigastric - LigateExternal Iliac - Near Internal Ring
Femoral Vein and Artery (McVay)Spermatic Cord Vessels - Ischemic Orchitis
“Corona Mortis”
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Pressure While PreparingAvoid Blind Suturing
Proximal and Distal ControlAssess Distal Pulses Post-op
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Risk Factors for RecurrenceLaparoscopic and Non-Mesh Greater Than Open MeshMesh Weight - No Effect
Fixation - Short term Absorbable Greater Than Glue, Self-Gripping, Long term Absorbable and Non-Absorbable
Indirect Sac Excision vs InvaginationDirect Hernia (Likely Due to Insufficient Medial Mesh Fixation)
Sliding Inguinal HerniaLipomas of the Cord (Should be Reduced and Excised)
Hernias Repaired Under Local More Likely to RecurComplications (Hematoma, Infection) -> Recurrence
M & M -> 50% Reduction in Re-operation for Recurrence
< 50 Procedures per Year in an Institution (Significant)< 25 Procedures per Year For Individual Surgeon (Association)
< 5 Procedures per Year For Individual Surgeon (Significant),
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Mesh Complications
Numerous Recalls
Intra-abdominal Positioning
Degradation
Migration
“Meshoma”
Folds
Dysejaculation
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Treatment
Medical Therapy
Nerve Blocks
Re-exploration Neurectomy, Mesh Explantation
Alternative Modalities
Litigation
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Managing Risks of Hernia Repair CMPA 2007-2011
CMPA
121 Closed Cases (80 Legal, 41 College) -Mostly Favourable Outcomes
Complications: Testicular Atrophy, Nerve Injury, Infection, Chronic Pain
Allegations: Lack of Informed Consent, Surgical Injury, Inadequate Assessment of Post-op Complications
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Risk Management Pre-op
Document Consent Discussion of Surgical Risks (ie Scarring, Chronic Pain, Recurrence)
Does Patient Understand the Explanation?
Unauthorized Procedures
Delay in Diagnosis (Undifferentiated Abdominal Pain)
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Risk Management Intra-op
Wrong Side Surgery “Operate Through Your Initials”
Surgical Check List
Injuries to Bowel, Bladder, Blood Vessels, and Nerves
Technique, Inexperience, Misidentification of Anatomy
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Risk Management Post-op
Delay in Diagnosis of Complications
Unclear Discharge Instructions