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DOI: 10.1055/a-0863-4917
Aktuelle Therapie der Achalasie 2019
Current Treatment of Achalasia 2019Publication History
Publication Date:
12 April 2019 (online)
Zusammenfassung
Die Therapie der primär idiopathischen Achalasie, der häufigsten der seltenen Ösophagusmotilitätsstörungen, unterliegt derzeit einem Wandel. Zunehmend setzt sich das Prinzip der „Heller-Myotomie“ als Standard durch. Mit der von dem deutschen Chirurgen Ernst Heller im Jahr 1913 erstbeschriebenen Kardiomyotomie lässt sich meist eine sehr gute Symptomkontrolle erzielen. Metaanalysen randomisierter Studien (Level-1A-Evidenz) zeigen die Überlegenheit der laparoskopischen Heller-Myotomie (LHM) gegenüber der pneumatischen Dilatation (PD). Protagonisten der PD beziehen sich zumeist auf die Ergebnisse der europäischen Multicenterstudie, die mit häufig wiederholten PD vergleichbare Ergebnisse wie die LHM erzielt hat, mit allerdings einer (nicht Intention-to-treat inkludierten) initialen PD-Serie mit inakzeptabel hoher Perforationsrate (33%). Zur Prävention eines postoperativen gastroösophagealen Refluxes (GER) nach LHM ist die Hinzunahme einer Fundoplicatio obligat. Die Manschette der Wahl ist die anteriore 180°-Fundoplicatio nach Dor. Allerdings wird dieser Standard (LHM + Dor-Prozedur) nun bereits wieder herausgefordert. Die 2010 durch Haruhiro Inoue eingeführte und seither weltweit klinisch erprobte perorale endoskopische Myotomie (POEM) ermöglicht die Durchführung der „Heller-Myotomie“ auf rein endoskopischem Wege. Die Komplikationsraten von POEM sind gering, die Symptomkontrolle ist in systematischen Reviews der publizierten Serien zur LHM vergleichbar oder sogar diskret überlegen. Vorteile der POEM sind u. a. die Möglichkeit, eine lange Myotomie (erforderlichenfalls des gesamten Ösophagus) durchzuführen und die relativ freie Wählbarkeit der Lokalisation der Myotomie (anteriores/posteriores POEM). Nachteile von POEM sind die bewiesen höhere postoperative Refluxrate nach POEM im Vergleich zur LHM, bei allerdings meist guter Behandelbarkeit des Refluxes mit PPI, erforderlichenfalls (selten) nachträglicher laparoskopischer Dor-Fundoplicatio. (Vorläufige) Ergebnisse von 2 prospektiv randomisierten Studien zeigen die Überlegenheit der POEM gegenüber der PD und Gleichwertigkeit der POEM zu LHM + Dor-Prozedur, bei erhöhtem GER. Im eigenen Vorgehen werden POEM und LHM in einem „Tailored Approach“ (maßgeschneidert) verwendet: POEM wird bevorzugt bei Typ III und Typ II mit Brustschmerzen, LHM bei sigmoidaler Achalasie und morphologischen Begleitveränderungen (Hernie, Divertikel etc.), ansonsten liberalere Verfahrenswahl.
Abstract
Treatment of primary idopathic achalasia, the most common of the rare oesophageal motility disorders, is currently changing. The therapeutic priciple of Hellerʼs myotomy is increasingly accepted as standard. In 1913, the German surgeon Ernst Heller described the cardiomyotomy named after him, faciliating excellent symptom control. Meta-analyses of randomised trials (level 1A evidence) demonstrate superiority of laparoscopic Heller myotomy (LHM) over endoscopic pneumatic dilatation (PD). However, some surgeons still advocate the PD strategy, based on the results of the randomised European Multicenter study PD vs. LHM, suggesting that the two procedures achieve similar symptom control after 2 and 5 years. However, an initial series of PDs was excluded from “intention-to-treat” analysis, as the oesophageal perforation rate was unacceptably high (33.3%). To prevent postoperative gastroesophageal reflux (GER) after LHM, addition of a fundoplication is established as standard. The anterior 180° Dor is the wrap type of choice. This standard (LHM + Dor procedure) has now been challenged: Peroral endoscopic myotomy (POEM) was introduced into clinical practice by Harihiro Inoue in 2010, and has now been intensively investigated in specialised centres worldwide. This allows creation of a “Heller myotomy” through the endoscopic route. Complication rates are low, symptom control is excellent and systematic reviews of published series show similar or slightly superior dysphagia control with POEM than with LHM. Advantages of POEM are the possibility to perform a long-myotomy (of the entire length of the oesophagus if necessary) and the relatively free choice of the localisation of the myotomy (anterior/posterior POEM). The disadvantage is the increased postoperative GER after POEM; however this sequel is managed with PPI in most cases, or a laparoscopic fundoplication, if necessary. Preliminary results of two prospectively randomised trials show the superiority of POEM over PD, as well as the non-inferiority to LHM, but increased postoperative GER. The author uses a tailored approach, with preference of POEM for achalasia type III and type II with chest pain and LHM + Dor for sigmoid achalasia and other associated morphological changes. The procedure in all other patients is depends on individual personal preferences.
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