POEM vs Laparoscopic Heller Myotomy and Fundoplication: Which Is Now the Gold Standard for Treatment of Achalasia?

Achalasia

Approaches to achalasia include non-operative and operative techniques with Heller Myotomy and Per-Oral Endoscopic Myotomy (POEM) at the forefront of palliative strategies. Given the diverse subtypes and the time-dependent failure pattern for achalasia, there is no standard approach. We elect for a POEM for type III achalasia, poor functional status, hostile abdomen, and salvage after the previous myotomy. A Heller myotomy is elected over a POEM for type II achalasia, presence of diverticulum, and hiatal hernia. As long-term outcomes become available, an optimal customized strategy will become clearer.

Peroral endoscopic myotomy vs laparoscopic myotomy and partial fundoplication for esophageal achalasia: A single-center randomized controlled trial

BACKGROUND

Achalasia is a rare benign esophageal motor disorder characterized by incomplete relaxation of the lower esophageal sphincter (LES). The treatment of achalasia is not curative, but rather is aimed at reducing LES pressure. In patients who have failed noninvasive therapy, surgery should be considered. Myotomy with partial fundoplication has been considered the first-line treatment for non-advanced achalasia. Recently, peroral endoscopic myotomy (POEM), a technique that employs the principles of submucosal endoscopy to perform the equivalent of a surgical myotomy, has emerged as a promising minimally invasive technique for the management of this condition.

AIM

To compare POEM and laparoscopic myotomy and partial fundoplication (LM-PF) regarding their efficacy and outcomes for the treatment of achalasia.

METHODS

Forty treatment-naive adult patients who had been diagnosed with achalasia based on clinical and manometric criteria (dysphagia score ≥ II and Eckardt score > 3) were randomized to undergo either LM-PF or POEM. The outcome measures were anesthesia time, procedure time, symptom improvement, reflux esophagitis (as determined with the Gastroesophageal Reflux Disease Questionnaire), barium column height at 1 and 5 min (on a barium esophagogram), pressure at the LES, the occurrence of adverse events (AEs), length of stay (LOS), and quality of life (QoL).

RESULTS

There were no statistically significant differences between the LM-PF and POEM groups regarding symptom improvement at 1, 6, and 12 mo of follow-up (P = 0.192, P = 0.242, and P = 0.242, respectively). However, the rates of reflux esophagitis at 1, 6, and 12 mo of follow-up were significantly higher in the POEM group (P = 0.014, P < 0.001, and P = 0.002, respectively). There were also no statistical differences regarding the manometry values, the occurrence of AEs, or LOS. Anesthesia time and procedure time were significantly shorter in the POEM group than in the LM-PF group (185.00 ± 56.89 and 95.70 ± 30.47 min vs 296.75 ± 56.13 and 218.75 ± 50.88 min, respectively; P = 0.001 for both). In the POEM group, there were improvements in all domains of the QoL questionnaire, whereas there were improvements in only three domains in the LM-PF group.

CONCLUSION

POEM and LM-PF appear to be equally effective in controlling the symptoms of achalasia, shortening LOS, and minimizing AEs. Nevertheless, POEM has the advantage of improving all domains of QoL, and shortening anesthesia and procedure times but with a significantly higher rate of gastroesophageal reflux.

Extrapancreatic Advanced Endoscopic Interventions

As the field of interventional endoscopy advances, conditions that were once treated with surgery are increasingly being treated with advanced endoscopy. Endoscopy is now used for treatment of achalasia, bariatric procedures for obesity; resection of early-stage malignancies in the gastrointestinal tract; and placement of lumen-apposing metal stents in the treatment of biliary obstruction, gastric outlet obstruction, cholecystitis, and drainage of nonpancreatic-related fluid collections or abscesses. Knowledge of the novel terminology, procedural details, expected postintervention imaging findings, and potential complications is vital for radiologists because these procedures are rapidly becoming more mainstream in daily practice. These procedures include peroral endoscopic myotomy for the treatment of achalasia and other esophageal motility disorders; endoscopic sleeve gastroplasty and placement of an intragastric balloon for weight loss; endoscopic submucosal dissection in the resection of tumors of the gastrointestinal tract; and therapeutic endoscopic-guided procedures for the treatment of biliary obstruction, gastric outlet obstruction, acute cholecystitis, and drainage of nonpancreatically related fluid collections. Patients benefit from these minimally invasive procedures, with potential improvement in morbidity and mortality rates, decreased length of hospital stay, and decreased health care costs when compared with the surgical alternative. Complications of these procedures include leaks or perforations, infections or abscesses, fistulas, and occlusion and migration of stents. An invited commentary by Pisipati and Pannala is available online. ^©RSNA, 2022.

Use of the functional luminal imaging probe in pediatrics: A comparison study of patients with achalasia before and after endoscopic dilation and non-achalasia controls

BACKGROUND

Achalasia is an esophageal motility disorder characterized by esophagogastric junction (EGJ) dysfunction and impaired esophageal peristalsis with significant impact on quality of life. While the functional luminal imaging probe (FLIP) has been used to assess EGJ distensibility in achalasia, its clinical utility in pediatrics is limited due to absence of normative values and correlations with clinical outcomes in children. Thus, we sought to evaluate FLIP's use in a pediatric achalasia cohort undergoing dilations and non-achalasia controls.

METHODS

We conducted a retrospective study of pediatric patients with achalasia who underwent FLIP before and immediately after balloon dilations and compared to a non-achalasia cohort.

KEY RESULTS

Thirty patients with achalasia (mean age, 15.2 years; 40% female), including fourteen treatment-naïve and thirteen controls (mean age, 7.9 years; 61% female) were identified. Median EGJ distensibility index (EGJ-DI) 2.07 mm²  mmHg^-1 and diameter (9.23 mm) in treatment-naïve patients were significantly lower compared to controls (EGJ-DI 6.8 mm²  mmHg^-1 ; diameter 18.61 mm; (p < 0.001). Balloon dilations resulted in a significant increase in EGJ-DI immediately after the dilation, particularly in treatment-naïve patients (p < 0.001), and a significant improvement in Eckardt scores (p < 0.001).

CONCLUSIONS & INFERENCES

Functional luminal imaging probe measurements of EGJ-DI in pediatric patients with achalasia are mostly consistent with adult findings. However, normal EGJ-DI is seen in symptomatic patients, including treatment-naive, highlighting the need for pediatric reference data. Balloon dilations achieve a significant increase in EGJ-DI with improvement in Eckardt scores, confirming the therapeutic value of dilations in achalasia management.

Surgical management of achalasia

Esophageal achalasia is a primary esophageal motility disorder characterized by lack of peristalsis and by incomplete or absent relaxation of the lower esophageal sphincter in response to swallowing. The cause of the disease is unknown. The goal of treatment is to eliminate the functional outflow obstruction at the level of the gastroesophageal junction, therefore allowing emptying of the esophagus into the stomach. They include the laparoscopic Heller myotomy with partial fundoplication, pneumatic dilatation, and peroral endoscopic myotomy. Esophagectomy is considered as a last resort for patients who have failed prior therapeutic attempts. In this evidence and experience-based review, we will illustrate the technique and results of the surgical treatment of esophageal achalasia and compare it to the other available treatment modalities.

A Decade of Investigation: Peroral Endoscopic Myotomy Versus Laparoscopic Heller Myotomy for Achalasia

Background: Although laparoscopic Heller myotomy (LHM) with partial fundoplication has long been considered the gold standard for treatment of patients with achalasia, peroral endoscopic myotomy (POEM) has emerged in the last decade as a viable alternative. Methods: A collective review of literature concerning investigations that have reported patient outcomes and treatment success of LHM and POEM for all achalasia subtypes. Results: While POEM has shown excellent short-term safety and efficacy in the relief of symptoms, the long-term symptomatic outcomes after the intervention are yet to be concluded. Further evaluation of patients' interpretations and answers on subjective questionnaires is warranted before determining treatment success for POEM. Use of more reliable and disease-specific health-related quality-of-life questionnaires are better justified when comparing a new endoscopic procedure to an established gold standard. The need for objective parameters to measure reflux, longer follow-up studies, and randomized trials comparing POEM to LHM is particularly important when assessing the outcome of this new technique. High incidence of post-POEM pathologic reflux and indication for daily proton pump inhibitor use is of concern, and the lack of more long-term, objective evidence leaves the clinical value of the procedure in a state of uncertainty. Conclusions: The LHM combined with partial fundoplication is still considered to be the gold standard treatment modality for achalasia, but as the POEM procedure rapidly becomes common practice, this treatment may be performed in the majority of achalasia cases. Given the number of flaws overlooked in seminal investigations, careful consideration should be given to the patients being selected for this therapy.

Laparoscopic Heller Myotomy: A Fundoplication Is Necessary to Control Gastroesophageal Reflux

Background: Achalasia is a rare esophageal motility disorder that causes progressive dysphagia and regurgitation. The aim of treatment for achalasia is to provide symptom relief by reducing esophageal outflow resistance by disrupting the muscles at the level of the esophagogastric junction to allow esophageal emptying by gravity. Methods: A review of the literature concerning laparoscopic treatment of esophageal achalasia. Results: Surgical myotomy with partial fundoplication is very effective in relieving symptoms, and is able to strike a balance between relief of symptoms and control of abnormal reflux. Conclusions: Since reflux of gastric contents into the aperistaltic esophagus can cause esophagitis, peptic strictures, Barrett's esophagus, and even esophageal carcinoma, the addition of a partial fundoplication is very important. The choice of partial fundoplication is based on surgeons' preference and expertise.

Consensus on the digestive endoscopic tunnel technique

With the digestive endoscopic tunnel technique (DETT), many diseases that previously would have been treated by surgery are now endoscopically curable by establishing a submucosal tunnel between the mucosa and muscularis propria (MP). Through the tunnel, endoscopic diagnosis or treatment is performed for lesions in the mucosa, in the MP, and even outside the gastrointestinal (GI) tract. At present, the tunnel technique application range covers the following: (1) Treatment of lesions originating from the mucosal layer, e.g., endoscopic submucosal tunnel dissection for oesophageal large or circular early-stage cancer or precancerosis; (2) treatment of lesions from the MP layer, per-oral endoscopic myotomy, submucosal tunnelling endoscopic resection, etc.; and (3) diagnosis and treatment of lesions outside the GI tract, such as resection of lymph nodes and benign tumour excision in the mediastinum or abdominal cavity. With the increasing number of DETTs performed worldwide, endoscopic tunnel therapeutics, which is based on DETT, has been gradually developed and optimized. However, there is not yet an expert consensus on DETT to regulate its indications, contraindications, surgical procedure, and postoperative treatment. The International DETT Alliance signed up this consensus to standardize the procedures of DETT. In this consensus, we describe the definition, mechanism, and significance of DETT, prevention of infection and concepts of DETT-associated complications, methods to establish a submucosal tunnel, and application of DETT for lesions in the mucosa, in the MP and outside the GI tract (indications and contraindications, procedures, pre- and postoperative treatments, effectiveness, complications and treatments, and a comparison between DETT and other operations).

Meta-analysis of clinical outcome after treatment for achalasia based on manometric subtypes

BACKGROUND

The introduction of high-resolution manometry and the Chicago classification has made it possible to diagnose achalasia and predict treatment response accurately. The aim of this study was to compare the effect of the different treatments available on symptomatic outcomes across all achalasia subtypes.

METHODS

The study was conducted according to PRISMA and MOOSE guidelines. A literature search of PubMed and MEDLINE databases was undertaken to identify all relevant articles reporting clinical outcomes of patients with achalasia after botulinum toxin injection, pneumatic dilatation, laparoscopic Heller myotomy (LHM) and peroral endoscopic myotomy (POEM) based on manometric subtypes. Patients were grouped according to the Chicago classification and the success rate in treating symptoms was measured as the primary endpoint.

RESULTS

Twenty studies (1575 patients) were selected, and data on botulinum toxin, pneumatic dilatation, LHM and POEM were extracted. Success rates for LHM in type I, II and III achalasia were 81, 92 and 71 per cent respectively. Those for POEM were 95, 97 and 93 per cent respectively. POEM was more likely to be successful than LHM for both type I (odds ratio (OR) 2·97, 95 per cent c.i. 1·09 to 8·03; P = 0·032) and type III (OR 3·50, 1·39 to 8·77; P = 0·007) achalasia. The likelihood of success of POEM and LHM for type II achalasia was similar.

CONCLUSION

Pneumatic dilatation had a lower but still acceptable success rate compared with POEM or LHM in patients with type II achalasia. POEM is an excellent treatment modality for type I and type III achalasia, although it did not show any superiority over LHM for type II achalasia.

A Thousand and One Laparoscopic Heller Myotomies for Esophageal Achalasia: a 25-Year Experience at a Single Tertiary Center

BACKGROUND

The aim of this study was to assess the long-term outcome of laparoscopic Heller-Dor (LHD) myotomy to treat achalasia at a single high-volume institution in the past 25 years.

METHODS

Patients undergoing LHD from 1992 to 2017 were prospectively registered in a dedicated database. Those who had already undergone surgical or endoscopic myotomy were ruled out. Symptoms were collected and scored using a detailed questionnaire; barium swallow, endoscopy, and manometry were performed before and after surgery; and 24-h pH monitoring was done 6 months after LHD.

RESULTS

One thousand one patients underwent LHD (M:F = 536:465), performed by six staff surgeons. The surgical procedure was completed laparoscopically in all but 8 patients (0.8%). At a median of follow-up of 62 months, the outcome was positive in 896 patients (89.5%), and the probability of being cured from symptoms at 20 years exceeded 80%. Among the patients who had previously received other treatments, there were 25/182 failures (13.7%), while the failures in the primary treatment group were 80/819 (9.8%) (p = 0.19). All 105 patients whose LHD failed subsequently underwent endoscopic pneumatic dilations with an overall success rate of 98.4%. At univariate analysis, the manometric pattern (p < 0.001), the presence of a sigmoid megaesophagus (p = 0.03), and chest pain (p < 0.001) were the factors that predicted a poor outcome. At multivariate analysis, all three factors were independently associated with a poor outcome. Post-operative 24-h pH monitoring was abnormal in 55/615 patients (9.1%).

CONCLUSIONS

LHD can durably relieve achalasia symptoms in more than 80% of patients. The pre-operative manometric pattern, the presence of a sigmoid esophagus, and chest pain represent the strongest predictors of outcome.

Anesthetic management and associated complications of peroral endoscopic myotomy: A case series

AIM

To investigate the anesthetic management of peroral endoscopic myotomy (POEM) and its associated complications.

METHODS

This study was a single-center, retrospective, observational study comprising a case series of all patients who underwent POEM in our hospital from April 2015 to November 2016. We collected data regarding patient characteristics, anesthetic methods, surgical factors, and complications using an electronic chart.

RESULTS

There were 86 patients who underwent POEM in our hospital during the study period. Preoperatively, patients were maintained on a low residue diet for 48 h prior to the procedure. They were fasted of solids for 24 h before surgery. There was one case of aspiration (1.2%). During POEM, patients were positioned supine with the upper abdomen covered by a clear drape so that pneumoperitoneum could be timeously identified. In three cases, the peak airway pressure exceeded 35 cmH2O during volume controlled ventilation with tidal volumes of 6-8 mL/kg and subsequent impairment of ventilation. These cases had been diagnosed with spastic esophageal disorders (SEDs) and the length of the muscular incision on the esophageal side was longer than normal.

CONCLUSION

In the anesthetic management of POEM, it is important to prevent aspiration during induction of anesthesia and to identify and treat complications associated with CO2 insufflation.

Life after per-oral endoscopic myotomy: long-term outcomes of quality of life and their association with Eckardt scores

BACKGROUND AND AIMS

The clinical efficacy of per-oral endoscopic myotomy (POEM) has been commonly established by reduction in the Eckardt score (<3) after the procedure. However, achalasia can lead to significant impairment in the patient's quality of life that may go beyond the 4 classic achalasia symptoms as measured by the Eckardt score. The aims of our study were to evaluate the effect of POEM on short-term and long-term health-related quality of life (HRQOL) and to assess the association between HRQOL and Eckardt scores.

METHODS

Single-center, prospective, cohort study of consecutive POEMs during a 3-year period. Eckardt and HRQOL scores as measured by the short-form survey questionnaire (SF-36) were obtained at baseline and at various intervals after POEM. Comparison of the mean scores was described by using univariate linear regression. The association between Eckardt scores and HRQOL were calculated by using a linear, mixed-model analysis.

RESULTS

POEM was performed in 143 consecutive patients (54% male; mean ± standard deviation [SD] age, 56.9 ± 17.9 years). At long-term follow-up (mean 16.4 months, range 12-40), both the HRQOL baseline mental and physical component scores improved significantly from 61.5 ± 2.2 to 71.2 ± 3.6; (P < .021) and from 55.8 ± 2.2 to 63.6 ± 3.3; (P = < .034), respectively. Mixed-model analysis showed a significant association between Eckardt and all HRQOL scores (P < .001).

CONCLUSION

POEM improved all dimensions of HRQOL as measured by the SF-36 survey at both short-term and long-term follow-up. A strong association was seen between Eckardt scores and all HRQOL domains. Further studies with the use of disease-specific HRQOL instruments are warranted. (Clinical trial registration number: NCT01832779.).