Expanding the inclusion criteria for nonoperative management of uncomplicated appendicitis: Outcomes and cost. Non-operative management of early, acute appendicitis in children: is it safe and effective? Outcomes of Antibiotic Therapy for Uncomplicated Appendicitis in Pregnancy. Use of Computed Tomography to Determine Perforation in Patients With Acute Appendicitis. A prospective randomized controlled multicenter trial comparing antibiotic therapy with appendectomy in the treatment of uncomplicated acute appendicitis (APPAC trial) Antibiotic Therapy vs Appendectomy for Treatment of Uncomplicated Acute Appendicitis: The APPAC Randomized Clinical Trial. The outcome of antibiotic therapy for uncomplicated appendicitis with diameters ≤ 10 mm.
BACKGROUND Carefully selected children with early appendicitis may be managed nonoperatively . However , it is unknown whether nonoperative management ( NOM ) is applicable to all patients with uncomplicated appendicitis . The purpose of this study was to evaluate the outcomes of NOM of uncomplicated appendicitis with exp and ed inclusion criteria . METHODS A prospect i ve , nonr and omized patient-preference study comparing NOM versus laparoscopic appendectomy ( LA ) was performed in children with radiographic/ clinical evidence of uncomplicated appendicitis . RESULTS Demographics , laboratory values , and clinical presentation were similar between the  NOM ( n=51 ) and LA ( n=32 ) groups . Initial failure rate was 31 % . The outcomes were similar between groups , except that NOM had fewer days of pain medication . Patients who failed NOM had a longer duration of symptoms prior to admission . Patients with appendicolith had a failure rate of 50 % compared to 24 % without appendicolith . The recurrence rate was 26 % . Overall , 51 % avoided appendectomy . Costs were similar between NOM and LA . CONCLUSIONS When exp and ing the inclusion criteria for children with presumed uncomplicated appendicitis , NOM was associated with high failure and recurrence rates . These high rates may be because of the inclusion of patients with complicated appendicitis and patients with an appendicolith . Even in this setting of less-restrictive exclusion criteria , NOM remained cost neutral . LEVEL OF EVIDENCE LEVEL II ( Treatment Study : Prospect i ve Comparative Study ) PURPOSE The purpose of this study was to determine if early , acute appendicitis in children can be safely and effectively managed with antibiotics alone . METHODS A retrospective review was performed of children ( < 18 yrs ) treated non-operatively ( NOM ) for early , acute appendicitis since May 2012 . These were compared to patients treated with appendectomy between January 2011 and October 2011 ( OM ) . Inclusion criteria included : ( a ) symptoms < 48 h , ( b ) localized peritonitis , and ( c ) ultrasound findings consistent with early , acute appendicitis . RESULTS Twelve patients ( 66 % female , mean age 12.2,SD=4.2 yrs ) were treated non-operatively , while 12 ( 50 % female , mean age 12.5,SD=3.2 yrs ) were treated operatively . Two NOM children ( 16.7 % ) required initial appendectomy . One patient developed recurrent appendicitis requiring appendectomy 7 months post-discharge . Four other NOM patients returned with symptoms but did not require admission or surgery . Two OM patients ( 8.3 % ) had hospital visits and admissions related to surgical site infections . Mean length of stay ( LOS ) for the first visit was 1.5 days ( SD=1.0d ) ( NOM ) vs. 1.3 days ( SD=0.5d ) ( OM ) ( p=0.61 ) . Including first and subsequent admissions , mean LOS was 1.8 days ( SD=1.1d ) ( NOM ) vs. 1.7 days ( SD=1.5d ) ( OM ) ( p=0.97 ) . CONCLUSION Early acute appendicitis in appropriately selected children can be successfully treated non-operatively . R and omized trials with longer follow-up are required OBJECTIVE The aim of the present study is to determine the feasibility and safety of antibiotics for uncomplicated simple appendicitis in pregnancy . METHOD We conducted a 6-year prospect i ve observational study on 20 pregnant women in whom uncomplicated simple appendicitis ( appendiceal diameter ≤11 mm and with no signs of appendicoliths , perforation , or abscess ) was radiologically verified and managed with a 4-day course of antibiotics . Treatment failure rate , defined as the need for an appendectomy during hospitalization and recurrence in the follow-up period ( median 25 months ) , and maternal or fetal complications during the pregnancy were evaluated . RESULTS Mean age of patients was 33.4 years , and gestational age was 17.8 weeks . Three patients failed to respond to antibiotic therapy  during hospitalization and underwent subsequent appendectomy ( 2 suppurative and 1 perforated appendicitis ) . There was 1 wound infection postoperatively . During follow-up , 2 patients during their ongoing pregnancy experienced recurrence at 3 and 6 months post-treatment , and a new course of antibiotics was determined . Patients also experienced recurrence at 8 and 10 months post-treatment and underwent appendectomy . Treatment failure occurred in 5 patients ( 25 % ) with no fetal complications during the pregnancy . CONCLUSIONS Antibiotic therapy for uncomplicated appendicitis in pregnancy may be a feasible treatment option without severe maternal and fetal complications PURPOSE Urgent appendectomy has long been the st and ard of care for acute appendicitis . Six r and omized trials have demonstrated that antibiotics can safely treat appendicitis , but approximately 1 in 4 of these patients eventually requires appendectomy . Overall treatment success may be limited by complex disease including perforation . Patients ׳ success on antibiotic therapy may depend on preoperative identification of complex disease on imaging . However , the effectiveness of computed tomography ( CT ) in differentiating complex disease including perforated from nonperforated appendicitis remains to be determined . The purpose of this study was to assess the preoperative diagnostic accuracy of CT in determining appendiceal perforation in patients operated for acute appendicitis . METHODS We performed a retrospective review of pathology and radiology reports from consecutive patients who presented to the emergency department with suspicion for acute appendicitis between January 2012 and May 2015 .  CT scans were re- review ed by abdominal imaging fellowship-trained radiologists using st and ardized criteria , and the radiologists were blinded to pathology and surgical findings . Radiologists specifically noted presence or absence of periappendiceal gas , abscess , appendicolith , fat str and ing , and bowel wall thickening . The overall radiologic impression as well as these specific imaging findings was compared to results of pathology and operative reports . Pathology reports were considered the st and ard for diagnostic accuracy . RESULTS Eighty-nine patients ( 65 % male , average age of 34 years ) presenting with right lower quadrant pain  underwent CT imaging and prompt appendectomy . Final pathology reported perforation in 48 % ( n = 43 ) of cases . Radiologic diagnosis of perforation was reported in 9 % ( n = 8) , correctly identifying perforation in 37.5 % ( n = 3 ) , and incorrectly reporting perforation in 62.5 % of nonperforated cases per pathology . Radiology missed 93 % ( n = 40 ) of perforations postoperatively diagnosed by pathology . There was no secondary finding ( fat str and ing , diameter > 13 mm , abscess , cecal wall thickening , periappendiceal gas , simple fluid collection , appendicolith , and phlegmon ) with a clinical ly reliable sensitivity or specificity to predict perforated appendicitis . Surgeon׳s report of perforation was consistent with the pathology report of perforation in only 28 % of cases . CONCLUSIONS The usefulness of a CT for determining perforation in acute appendicitis is limited , and methods to improve precision in identifying patients with complicated appendicitis should be explored as this may help for improving risk prediction for failure of treatment with antibiotic therapy and help guide patients and providers in shared decision-making for treatment options Background Although the st and ard treatment of acute appendicitis ( AA ) consists of an early appendectomy , there has recently been both an interest and an increase in the use of antibiotic therapy as the primary treatment for uncomplicated AA . However , the use of antibiotic therapy in the treatment of uncomplicated AA is still controversial . Methods / design The APPAC trial is a r and omized prospect i ve controlled , open label , non-inferiority multicenter trial design ed to compare antibiotic therapy ( ertapenem ) with emergency appendectomy in the treatment of uncomplicated AA . The primary endpoint of the study is the success of the r and omized treatment . In the antibiotic treatment arm successful treatment is defined as being discharged from the hospital without the need for surgical intervention and no recurrent appendicitis during a minimum follow-up of one-year ( treatment efficacy ) . Treatment efficacy in the operative treatment arm is defined as successful appendectomy evaluated to be 100 % . Secondary endpoints are post-intervention complications , overall morbidity and mortality , the length of hospital stay and sick leave , treatment costs and pain scores ( VAS , visual analoque scale ) . A maximum of 610 adult patients ( aged 18–60 years ) with a CT scan confirmed uncomplicated AA will be enrolled from six hospitals and r and omized by a closed envelope method in a 1:1 ratio either to undergo emergency appendectomy or to receive ertapenem ( 1 g per day ) for three days continued by oral levofloxacin ( 500 mg per day ) plus metronidazole ( 1.5 g per day ) for seven days . Follow-up by a telephone interview will be at 1 week , 2 months and 1 , 3 , 5 and 10 years ; the primary and secondary endpoints of the trial will be evaluated at each time point . Discussion The APPAC trial aims to provide level I evidence to support the hypothesis that approximately 75–85 % of patients with uncomplicated AA can be treated with effective antibiotic  therapy avoiding unnecessary appendectomies and the related operative morbidity , also result ing in major cost savings . Trial registration Clinical IMPORTANCE An increasing amount of evidence supports the use of antibiotics instead of surgery for treating patients with uncomplicated acute appendicitis . OBJECTIVE To compare antibiotic therapy with appendectomy in the treatment of uncomplicated acute appendicitis confirmed by computed tomography ( CT ) . DESIGN , SETTING , AND PARTICIPANTS The Appendicitis Acuta ( APPAC ) multicenter , open-label , noninferiority r and omized clinical trial was conducted from November 2009 until June 2012 in Finl and . The trial enrolled 530 patients aged 18 to 60 years with uncomplicated acute appendicitis confirmed by a CT scan . Patients were r and omly assigned to early appendectomy or antibiotic treatment with a 1-year follow-up period . INTERVENTIONS Patients r and omized to antibiotic therapy received intravenous ertapenem ( 1 g/d ) for 3 days followed by 7 days of oral levofloxacin ( 500 mg once daily ) and metronidazole ( 500 mg 3 times per day ) . Patients r and omized to the surgical treatment group were assigned to undergo st and ard open appendectomy . MAIN OUTCOMES AND MEASURES The primary end point for the surgical intervention was the successful completion of an appendectomy . The primary end point for antibiotic-treated patients was discharge from the hospital without the need for surgery and no recurrent appendicitis during a 1-year follow-up period . RESULTS There were 273 patients in the surgical group and 257 in the antibiotic group . Of 273 patients in the surgical group , all but 1 underwent successful appendectomy , result ing in a success rate of 99.6 % ( 95 % CI , 98.0 % to 100.0 % ) . In the antibiotic group , 70 patients ( 27.3 % ; 95 % CI , 22.0 % to 33.2 % ) underwent appendectomy within 1 year of initial presentation for appendicitis . Of the 256 patients available for follow-up in the antibiotic group , 186 ( 72.7 % ; 95 % CI , 66.8 % to 78.0 % ) did not require surgery . The intention-to-treat analysis yielded a difference in treatment efficacy between groups of -27.0 % ( 95 % CI , -31.6 % to ∞ ) ( P = .89 ) . Given the prespecified noninferiority margin of 24 % , we were unable to demonstrate noninferiority of antibiotic treatment relative to surgery . Of the 70 patients r and omized to antibiotic treatment who subsequently underwent appendectomy , 58 ( 82.9 % ; 95 % CI , 72.0 % to 90.8 % ) had uncomplicated appendicitis , 7 ( 10.0 % ; 95 % CI , 4.1 % to 19.5 % ) had complicated acute appendicitis , and 5 ( 7.1 % ; 95 % CI , 2.4 % to 15.9 % ) did not have appendicitis but received appendectomy for suspected recurrence . There were no intra-abdominal abscesses or other major complications associated with delayed appendectomy in patients r and omized to antibiotic treatment . CONCLUSIONS AND RELEVANCE Among patients with CT-proven , uncomplicated appendicitis , antibiotic treatment did not meet the prespecified criterion for noninferiority compared with appendectomy . Most patients r and omized to antibiotic treatment for uncomplicated appendicitis did not require appendectomy during the 1-year follow-up period , and those who required appendectomy did not experience significant complications . TRIAL REGISTRATION clinical trials.gov Identifier : NCT01022567 PURPOSE Although many patients receive antibiotic therapy for uncomplicated appendicitis , the relatively high treatment failure and recurrence rates are problematic . We assumed that patients with appendicitis and appendiceal diameters ≤ 10 mm , have better outcomes . The purpose of this prospect i ve non-r and omized study was to assess the outcomes of antibiotic therapy in patients with uncomplicated appendicitis and appendiceal diameters ≤ 10 mm . METHODS Over 2 years , we enrolled 119 patients who initially received antibiotic therapy .  The failure of antibiotic therapy was defined as the need for appendectomy and true appendicitis . Peritonitis was defined as either complicated appendicitis or intra-abdominal abscess postoperatively . We evaluated the rates of treatment failure , peritonitis , and recurrence . RESULTS Nine patients ( 7.6 % ) failed to respond to initial antibiotic therapy , and 6 had true appendicitis after subsequent surgery . Two patients had complicated appendicitis ( peritonitis ) , but no patient displayed intra-abdominal abscess postoperatively . During a median follow-up period months of 14 months , 14 patients ( 12.7 % ) experienced recurrence . CONCLUSIONS Antibiotic therapy without surgery may be a safe treatment for uncomplicated appendicitis in select patients with appendiceal diameters ≤ 10 mm
Conclusion The paradigm remains unchanged , that appendectomy is the gold st and ard of treatment for uncomplicated appendicitis , given its higher efficacy rate when compared to NOM
Introduction Appendectomy has long been the mainstay of intervention for acute appendicitis , aim ing at preventing perforation , peritonitis , abscess formation and recurrence .
With better underst and ing of the disease process , non-operative management ( NOM ) with antibiotics alone has been proved a feasible treatment for uncomplicated appendicitis .
This article aim ed at systematic ally review ing the available literature s and discussing the question whether NOM should replace appendectomy as the st and ard first-line treatment for uncomplicated appendicitis .