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    Appendicitis:

    Challenges in Management

    George W. Holcomb, III, M.D., MBA

    Childrens Mercy Hospital

    Kansas City, MO

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    Questions

    Laparoscopy vs open for acute appendicitis?

    Laparoscopy vs open for perforatedappendicitis?

    How do we define perforation? Optimal antibiotic management for perforated

    appendicitis?

    Management of patient presenting withabscess?

    SSULS appendectomy vs 3 port laparoscopicappendectomy?

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    Laparoscopy vs Open Appendectomy

    Acute Appendicitis

    Less wound infx with laparoscopy

    Stapler vs cautery/endo loop technique

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    Laparoscopy vs Open Appendectomy

    Perforated Appendicitis

    Far fewer (almost none)wound infx with

    laparoscopic approach

    Allows surgeon tosuction/irrigate underdirect visualization

    Less small bowelobstruction (SBO)

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    Adhesive Small Bowel Obstruction AfterAppendectomy in Children: Comparison

    Between the Laparoscopic and Open Approach

    Jan 98-June 05: 1105 Appendectomies-447 Open, 628 Lap.

    AAP 2006

    J Pediatr Surg 42:939-942, 2007

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    Laparoscopic versus Open Appendectomy(1105 Patients)

    1998-2005

    Laparoscopic (n = 628) Open (n = 477) P value

    Age (years) 11.0 +/- 3.7 9.2 +/- 5.1 p > 0.05

    Gender (M/F) 355/273 301/176 p > 0.05

    SBO 1 (0.2%) 7 (1.5%) p = 0.01

    Perforated appendicitis 186 192

    Mean time to SBO 8 days 58 days

    Median follow-up (years) 3.5 (0.86.5) 4.9 (0.98.3)

    AAP, 2006J Pediatr Surg 42:939-942, 2007

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    SBO After Perforated Appendicitis(1105 Patients)

    1998-2005

    Laparoscopic Open P value

    Perforated appendicitis 186 192

    SBO 1 (0.5%) 6 (3.1%) p = 0.03

    AAP, 2006

    J Pediatr Surg 42:939-942, 2007

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    How Do We Define Perforation?

    Stool in abdomenHole in appendix

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    Definition of Perforated Appendicitis(Hole in appendix, fecalith in abdomen)

    Impact of Strict Definition of Perforation on Abscess Rate

    (2003-2007)

    Before definition

    (292 Pts)

    After definition

    (388 Pts)

    Acute appendicitis Abscess rate

    1.7%

    Abscess rate

    0.8%

    Before definition(131 Pts)

    After definition(161 Pts)

    Perforated appendicitis Abscess rate

    14.0%

    Abscess rate

    18.0%

    PAPS, 2008J Pediatr Surg 43:2242-2245, 2008

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    What is the Optimal Antibiotic

    Management for Perforated

    Appendicitis?

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    Prospective Randomized Trial

    Ceftriaxone/Metronidazole vs AGC Under 18 years of age

    Perforated appendicitis at the time of

    appendectomy Stool in the abdomen

    Hole in the appendix

    Exclusion Criteria

    Known allergy to one of the medications

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    Results

    Outcomes

    WBC (x103

    ) 9.4 +/- 3.9 9.9 +/- 4.4 0.56

    LOS (Days) 6.27 +/- 2.5 6.20 +/- 3.2 0.85

    IV Tx (Days) 6.0 +/- 1.5 6.2 +/- 1.1 0.48

    Abscess (%) 20.4% 16.3% 0.79

    CM AGC P value

    AAP, 2007

    J Pediatr Surg 43:79-82, 2007

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    Conclusions

    There is no difference in infectiouscomplications, recovery or defervescenceafter perforated appendicitis between

    Ceftriaxone/Metronidazole and AGC

    Ceftriaxone/Metronidazole is more cost-

    effective than AGC

    AAP, 2007

    J Pediatr Surg 43:981-985, 2008

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    How do we manage the child presentingwith an abscess due to ruptured

    appendicitis?

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    Prospective Randomized TrialInitial Laparoscopic Appendectomy vs Initial Non-operative

    Management for Patients Presenting with Appendicitis and Abscess

    Patient Characteristics at the Time of Admission

    Initial

    operation

    (n = 20)

    Initial non-operative

    management (n = 20)

    P value

    Age (y) 10.1 +/- 4.2 8.8 +/- 4.2 .31

    Weight (kg) 37.0 +/- 16.2 37.1 +/- 20.8 .98

    Body mass index (kg/cm2) 18.0 +/- 4.5 19.5 +/- 5.5 .39

    White blood cell count 17.4 +/- 6.6 16.9 +/- 6.8 .84

    Maximum temperature 37.8 +/- 1.0 37.7 +/- 0.9 .95

    Maximum axial area of abscess (cm2) 29.2 +/- 29.7 26.2 +/- 21.1 .75

    APSA, 2009

    J Pediatr Surg 45:236-240, 2010

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    Prospective Randomized TrialInitial Laparoscopic Appendectomy vs Initial Non-operative Management for

    Patients Presenting with Appendicitis and Abscess

    Initial operation

    (n = 20)

    Initial non-operative management

    (n = 20)

    P value

    Operation time (min) 62.1 +/- 38.7 42.0 +/- 45.5 .06

    Total length of

    hospitalization (d)

    6.5 +/- 3.8 6.7 +/- 6.6 .92

    Recurrent abscess after

    initial treatment20% 25% 1.0

    Doses of narcotics 9.7 +/- 4.0 7.1 +/- 15.8 .47

    Total health care visits 2.8 +/- 1.1 4.1 +/- 1.0

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    Prospective Randomized Trial

    Conclusion

    There is no difference in outcomes b/w

    initial laparoscopic operation vs initialnon-operative management followed bylaparoscopic interval appendectomy forpatients presenting with a well-defined

    abscess due to perforated appendicitis.

    APSA, 2009

    J Pediatr Surg 45:236-240, 2010

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    Can patients with perforatedappendicitis be discharged prior to

    postoperative day 5?Discharge Criteria

    Afebrile x 24 hrs.

    Regular diet

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    Prospective Randomized Trial

    IV vs IV/PO antibiotics forperforated appendicitis

    102 patients

    Definition of perforatedappendicitis

    IV/PO arm of study (7 days)vs minimum IV antibiotics of5 days

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    Prospective Randomized TrialPatient Demographics

    IV (n=52) IV/PO (n=50) P value

    Mean age (years) 9.7 +/-4.2 10.1 +/- 4.6 0.63

    Mean weight (kg) 41.2 +/-23.3 43.2 +/- 24.1 0.88

    Male (%) 60 60 0.62

    Mean maximum

    temperature onadmission (oC)

    37.9 +/- 1.0 38.1 +/- 1.0 0.53

    Mean duration of

    symptoms (days)

    2.6 +/- 1.3 3.0 +/- 1.5 0.36

    AAP, 2009Accepted, J Pediatr Surg

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    Prospective Randomized Trial

    Clinical Outcomes

    IV (n=52 IV/PO (n=50 P value

    Mean operative time (min) 41:06+/-15:36 46:30+/-19:42 0.13

    Mean time to regular diet (min) 68:00+/-35:06 61:42+/-32:12 0.36

    Mean length of stay after

    operation (min)

    6:06+/-2:00 4:48 +/-2:36 0.01

    Total visits 3.1 +/-1.4 3.1+/-1.2 1.0

    Postoperative abscess rate (%) 19 20 1.0

    AAP, 2009

    Accepted, J Pediatr Surg

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    Conclusion

    42% (42/100) of patients in the

    IV/PO antibiotic group could be

    discharged before day 5 using

    discharge criteria of afebrile and

    tolerating a regular diet.

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    SSULS Appendectomy

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    QUESTIONS

    www.centerforprospectiveclinicaltrials.com

    www.cmhcenterforminimallyinvasivesurgery.com

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