S P CIENTIFIC APER Conversion to Stoppa Procedure in Laparoscopic Totally Extraperitoneal Inguinal Hernia Repair Mustafa Ates, MD, Abuzer Dirican, MD, Dincer Ozgor, MD, Fatih Gonultas, MD, Burak Isik ABSTRACT INTRODUCTION Background and Objectives: Conversion to open sur- Many surgical procedures have been developed and per- geryisanimportantproblem,especiallyduringthelearn- formedforinguinalherniarepair.Laparoscopy,especially ing curve of laparoscopic totally extraperitoneal (TEP) the laparoscopic totally extraperitoneal (TEP) approach, inguinal hernia repair. has gained popularity for inguinal hernia repair.1,2 Ran- domized controlled studies and metaanalyses comparing Methods: Here, we discuss conversion to the Stoppa TEPherniarepairwithotherlaparoscopicproceduresand procedureduringlaparoscopicTEPinguinalherniarepair. conventionalopensurgeryhaveshownbetterresultswith Outcomes of patients who underwent conversion to an TEP in terms of less postoperative pain, earlier ambula- open approach during laparoscopic TEP inguinal hernia tion, earlier return to work, better cosmetic results, and repairbetweenSeptember2004andMay2010wereeval- improved cost-effectiveness compared with other hernia uated. repairprocedures.2–10However,surgeonsperformingTEP Results:Intotal,259consecutivepatientswith281ingui- hernia repair should be thoroughly familiar with the pos- nal hernias underwent laparoscopic TEP inguinal hernia terior anatomical view of the laparoscopic approach and repair.Thirty-oneherniarepairs(11%)wereconvertedto must have enough advanced laparoscopic experience to open conventional surgical procedures. Twenty-eight of preventcomplications,conversions,andtocorrectionde- 31 laparoscopic TEP hernia repairs were converted to fects.4,10,11 modified Stoppa procedures, because of technical diffi- Mostthedatapublishedonlaparoscopyinherniasurgery culties. Three of these patients underwent Lichtenstein have focused on patient outcomes and surgical data. Al- herniarepairs,becausetheyhadundergoneprevioussur- thoughtheseendpointsareimportant,mostofthosestud- geries. ies,itseems,haveignoredconversionasanintraoperative Conclusion: Stoppa is an easy and successful procedure complication, which may occur in up to 10.6% of cases. used to solve problems during TEP hernia repair. The Although selected conversion types included transabdomi- Lichtenstein procedure may be a suitable option in pa- nal preperitoneal (TAPP), Lichtenstein, Shouldice, anterior tientswhohaveundergonepreviousoperations,suchasa preperitoneal, Kugel, and Stoppa repair in these studies, radical prostatectomy. authorsofferednoguidanceontheoptimalconversiontype duringlaparoscopicTEPherniarepairandnoexplanationas Key Words: Totally extraperitoneal hernia repair, Con- to why they prefer one of those technique specifically.2–19 version, Stoppa. Thus, we undertook this study to evaluate conversion to the modified Stoppa procedure during laparoscopic TEP inguinal hernia repair through an analysis of our data. METHODS Outcomes of patients who underwent conversions to DepartmentofGeneralSurgery,InonuUniversityMedicalFaculty,Malatya,Turkey open surgery during laparoscopic TEP inguinal hernia (allauthors). repair between September 2006 and May 2010 at Malatya Presentedasanoralpresentationatthe32ndInternationalCongressoftheEuro- StateHospitalandTurgutOzalMedicalCenterwereeval- peanHerniaSociety,October6–9,2010,Istanbul,Turkey. uated retrospectively with regard to conversion type. Addresscorrespondenceto:MustafaAtes,MD,TurgutOzalMah.1.Sokak,Almira SitesiABlokNo:29,44080,Malatya,Turkey.Telephone:(cid:1)904223773000,Fax: (cid:1)904223410036,Gsm:(cid:1)905447439294,E-mail:[email protected] Data of patients who underwent conversion were ana- lyzed, including age, sex, type of hernia, operative time, DOI:10.4293/108680812X13427982376347 perioperativecomplications,conversiontypeandreason, ©2012byJSLS,JournaloftheSocietyofLaparoendoscopicSurgeons.Publishedby theSocietyofLaparoendoscopicSurgeons,Inc. use of drains, postoperative morbidity, length of hospital 250 JSLS(2012)16:250–254 stay (days), mean follow-up period (months), and recur- theexternaliliacvesselsandtheiliopsoaswereidentified. rencerate.Allsurgicalprocedureswereperformedbythe After dissecting free and retracting the hernial sac, a 14- first author in the 2 hospitals. He is experienced in both cm(cid:2)10-cmpolypropyleneheavyweightmeshequipped theStoppaprocedureandlaparoscopicherniarepair.The with a horizontal slit was inserted into the preperitoneal studyprotocolwasapprovedbytheethicscommitteeand space, covering all potential hernias of the inguinal floor institutionalreviewboardoftheMedicalFacultyofInonu and the spermatic cord, and fixed to the groin using a University with a reference number 2010/84. hernia stapler. A closed-suction drain was then placed betweenthemeshandtheabdominalwall,andumbilico- Surgical Technique prevesical fascia was closed using 2-0 polypropylene su- tures. The skin was closed separately using 3-0 polypro- General anesthesia was administered to all patients. Pa- pylene sutures. tients were positioned on the operation table in a neutral supine position. All patients received cefazolin 1g IV in- The technique for conversion to the Lichtenstein proce- traoperatively.Thesurgicalsitewasshavedjustbeforethe dure was as follows: a standard groin incision was made operation,andtheskinwaspreparedwith10%povidine- into the external oblique aponeurosis, and the spermatic iodinesolution.A2-cmverticalinfraumbilicalincisionwas cord was elevated from the posterior wall of the inguinal made, and the ipsilateral anterior rectus sheath was canal.Theherniasacwasopened,inspected,andligated. opened.Therectusmusclewasretractedlaterally,andthe A sheet of polypropylene mesh measuring 14cm (cid:2) 7cm space between the rectus muscle and posterior rectus wasplacedintothegroinandsecuredtothelateralborder sheath was enlarged by blunt digital dissection to allow oftherectussheath,theaponeurotictissueoverthepubic insertionofa10-mmtrocarwithaballoondissectorinthe tubercle (overlapping the pubic tubercle), and the ingui- preperitonealspacetothepubicbone.Afterreplacingthe nalligamentusingarunning2-0Prolenesuture.Themesh balloon with a Hasson trocar, CO was insufflated up to was split to re-create the internal ring. The 2 tails of the 2 14mm Hg, and a 30° laparoscope was introduced via a meshwerecrossed,suturedtogether,andattachedtothe 10-mm trocar. After 2 trocars had been introduced at the inguinalligament,lateraltothecord.Thesuperiorportion midlinebetweentheumbilicusandpubisintothepreperi- ofthemeshwassecuredtotherectussheathandinternal toneal space, anatomical landmarks including the os pu- oblique muscle using 3 interrupted sutures. After meticu- bis, the retropubic space of Retzius, Cooper’s ligament, lous hemostasis, a closed suction drain was placed be- and the space of Bogros were identified by laparoscopy. neath the external oblique aponeurosis. All fascias and After dissecting free and retracting the hernial sac, a 14- skin were then closed. The drain was removed after 24 cm(cid:2)10-cmpolypropyleneheavyweightmeshequipped hoursandthepatientsweredischarged.Theyreturnedfor with a horizontal slit was inserted into the preperitoneal follow-up after 10 days for suture removal, and a further space,coveringtheinguinalfloorandthespermaticcord, 3-month follow-up at the outpatient clinic was advised. andfixedbytitaniumhelicaltacker(meshfixationstaples) to the groin margins through the 5-mm port. CO2 was Statistical Analyses desufflated,andtheanteriorrectussheathwasclosedwith Continued variables are reported as means(cid:3)standard de- 2-0 polyglactin. When there was a need for conversion, viations,andcategoricalvariablesarereportedasnumber because of, for example, peritoneal breach/laceration or and percent in this study. vessel injury, the laparoscopic TEP procedure was con- verted to Stoppa or Lichtenstein hernia repair. RESULTS The technique for conversion to the modified Stoppa procedurewithsomeminormodificationswasasfollows: A total of 259 consecutive patients with 281 inguinal a midline incision extending infraumbilically between herniaswhounderwentlaparoscopicTEPinguinalhernia 5-mm trocars was made, and the umbilico-prevesical fas- repairandwereprospectivelyfollowed-upwererecruited cia was cut along its entire length. The preperitoneal to the study. In all, 31 of 281 laparoscopic TEP hernia space was entered with blunt dissection due to TEP op- repairs (11%) were converted to open conventional sur- erations. The dissection included the retropubic space of gical procedures, because of dense adhesion, vascular Retziusandextendedlaterallybehindtheiliopubicramus injury,ortechnicaldifficultiesthatpreventedfurtherlapa- inthespaceofBogros.Thedissectionproceededlaterally roscopicdissection.Ofthese,25patientsweremen,1was undertherectusabdominalisandposteriortotheinferior awoman,andthemedianageofthepatientswas46(cid:3)8.9 epigastric vessels on the side opposite the surgeon until years.Five(19.23%)patientshadbilateralhernias;among JSLS(2012)16:250–254 251 ConversiontoStoppaProcedureinLaparoscopicTotallyExtraperitonealInguinalHerniaRepair,AtesMetal. unilateral inguinal hernias, 15 (57.69%) were on the right repair with conversion was 74.45(cid:3)6.54 minutes, that for side, and 6 (23.08%) were on the left side. Two (7.69%) bilateral was 95.22(cid:3)4.34 minutes, and the mean hospital patients had had a recurrent inguinal hernia, and 5 staywas2.2(cid:3)1.1days.Themeanfollow-upofthepatients (19.23%) had previous lower abdominal surgery (1 right was 18(cid:3)1.8 months without recurrence. pararectal incision, 1 caesarian delivery, 2 radical prosta- tectomy, 1 midline incision). DISCUSSION Twenty-eight of 31 laparoscopic TEP hernia repairs were The Stoppa procedure led to improvement in the laparo- converted to modified Stoppa procedures, 5 of which scopicTEPapproachtopreperitonealplacementtension- werebilateralhernias.Twoofthe28herniarepairpatients free mesh hernia repair in the early 1990s, because the had undergone previous abdominal operations (1 right procedure itself could now be exactly mimicked by lapa- pararectal incision, 1 caesarian delivery), and 2 patients roscopicmeans,andthemeshcouldbeinsertedinexactly had a recurrent hernia. One case of bilateral pneumotho- the same plane for reinforcing the inguinal region, as raxwithhemodynamicinstabilityoccurredduringlaparo- scopic TEP hernia repair, which was converted to the described by Stoppa.20 The laparoscopic TEP approach combines the benefit of the Stoppa procedure and mini- Stoppa procedure. The pneumothorax was successfully mally invasive surgery without injury to the peritoneal treatedbybilateralchesttubeinsertion.Thelast3patients withpreviouslowerabdominaloperations(2radicalpros- cavity.11 In this context, the most important development in hernia repair surgery may be the laparoscopic TEP tatectomy, 1 midline incision) were converted to a Lich- hernia procedure, which has lower recurrence and com- tenstein hernia repair, because the previous operation plication rates, a shorter hospital stay, a rapid return to scars were dense, which could interfere with the midline normal activities, and more postoperative comfort than incision in the Stoppa procedure. Perioperative data and reasons for conversion of these patients are presented in does open-repair and other laparoscopic techniques.2–10 Table 1. Randomizedtrialsundoubtedlysupportbothsurgeonsandpa- Seroma developed in 3 patients who underwent Stoppa tientsinmakingclinicaldecisionsinfavorofthelaparoscopic procedures,urinaryretentionin5,andtesticularpainand TEPinguinalherniarepairprocedure.2,7,8,10,14LaparoscopicTEP swelling in 2; all resolved completely with conservative inguinal hernia repair is, however, a challenge for surgeons, treatment. The mean operative time for unilateral hernia especiallyatthebeginningofthelearningcurve,becauseofthe unfamiliarposterioranatomicalviewoftheinguinalwallanat- omy and orientational technical difficulties of laparoscopy. Table1. Thesechallengesmaycauseconversionandseriouscompli- PerioperativeDataandReasonsforConversionof cations, such as major vascular injury, and bladder and ThesePatients bowelperforation.2,3,21AproblemuniquetotheTEPpro- Parameters NumberandPercentage cedure is that technical difficulties can happen any time duringdissectionandreductionoftheherniasac,possibly Numberofpatients 26 resultinginconversiontoopensurgery.Theconversion,a Numberofhernias 31 switchfromtheTEPrepairoperationtoothertechniques, Meanage(years) 46(cid:3)8.9 can be defined as an intraoperative complication and Sex(woman/man) 1/25 leads to the need for longer administration of analgesics Siteofhernia and postoperative hospital stay. This can be attributed -Rightinguinal 15(57.69%) largely to the technical difficulties of a narrow preperito- neal space and serious adhesions due to previous sur- -Leftinguinal 6(23.08%) gery.9,11–18 We believe that conversion is a difficult and -Bilateralinguinal 5(19.23%) serious situation for both surgeon and patient, because Numberofrecurrenthernias 2(7.69%) patients have great expectations for maximal cosmetic Previouslowerabdominalsurgery 5(19.23%) results with minimally invasive surgery, and the surgeon -Rightpararectalincision 1 may be concerned that conversion to conventional open -Caesariandelivery 1 surgerymayresultinadisasterforpatients,becauseofthe needforanewincision.Undertheseconditions,choosing -Radicalprostatectomy 2 the best conversion approach and explaining the reason -Midlineincision 1 to patients is therefore a difficult problem for surgeons 252 JSLS(2012)16:250–254 during laparoscopic operations. Moreover, Inukai et al14 studywasdifficulttocarryout,andnoreportedstudyhas experienced these difficulties and reported that perform- compared conversion types during laparoscopic hernia ing any conversion procedure can be extremely difficult repair yet. during laparoscopic TEP hernia repair. For this reason, they suggested that excluding patients with a history of CONCLUSION previous surgery would be a better way to prevent con- version,althoughsomereviewshavesuggestedthatmore Use of the modified Stoppa procedure can be consid- than30casesareneededtoachievetechnicalproficiency eredsafeandeffectivewhenconversionisrequireddue and to reduce the complication rate, in the experienced to technical difficulties during laparoscopic TEP hernia hand. Unfortunately, the conversion rate may reach repair, and it provides the advantage of an open pre- 10.6%.9,11–19 Additionally, several studies and guideline peritoneal reinforcing inguinal region, especially in bi- reports,includingaCochranereviewdescribingthetech- lateral hernia cases that require conversion. Entering nique of the TEP approach, reported their conversion the peritoneal cavity can also be avoided by the Stoppa rates; however, they had no clear data regarding the procedure, minimizing the risk of intraabdominal mesh selected conversion types and did not offer an optimal adhesionformation.ConversiontotheLichtensteinpro- method of conversion during laparoscopic TEP inguinal cedure should be the first choice in cases of dense hernia repair.2,3,13,19,21,22 Most of them used TAPP and adhesions in the preperitoneal space, such as after Lichtenstein for conversion procedures in their study and previous lower abdominal operations and radical pros- did not argue the reason for their choice.9,14–19,23–25 Lal et tatectomy. al11onlysuggestedthatconvertingtotheunilateralStoppa procedure during the TEP repair operation has improved References: thelearningcurveforTEPherniarepairanddecreasedthe incidenceoftheinitialconversionrateandcomplications 1. 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