POEM vs Heller Myotomy for Achalasia: Endoscopic or Laparoscopic, and the Reflux Trade-Off

The glass of water sits beside every plate now. Not for thirst, but as a tool: a mouthful of rice, a sip, a wait, a swallow that may or may not go down. The manometry report on the counter uses a word the family had never heard until last month, achalasia, and the follow-up letter offers two doors with unfamiliar names on them.

That is the moment most people first type POEM vs Heller myotomy into a search bar. One procedure is done entirely through the mouth; the other through a handful of small abdominal cuts. Both aim at the same few centimeters of muscle. Yet they leave the body in different states afterward, and the difference that matters most is not scars or hospital nights. It is stomach acid.

This explainer walks through what each procedure actually does, what the head-to-head evidence shows, and why the reflux question deserves more of your attention than the marketing around either technique tends to give it.

What achalasia is, and why POEM vs Heller myotomy is even a choice

The esophagus is a muscular tube roughly 25 centimeters long, and at its lower end sits the lower esophageal sphincter, a ring of muscle that works as a one-way valve between food pipe and stomach. In achalasia, the nerve cells that tell that valve to relax are lost. The ring stays clamped, and the tube above it loses its coordinated squeeze, so food and liquid pool instead of passing through. Cleveland Clinic describes it as a rare disorder, affecting roughly one in every 100,000 people each year.

No treatment brings the missing nerves back. Every effective option works by weakening the valve so gravity and whatever muscle function remains can move food along. That single fact reshapes the question. You are not choosing between a repair and a workaround; you are choosing how to reach a muscle and how much of it to cut.

A myotomy is simply a lengthwise cut through muscle fibers, made so the ring can no longer close tightly. Heller myotomy reaches that muscle from the outside, through the abdomen, using laparoscopic instruments. POEM, short for peroral endoscopic myotomy, reaches the same muscle from the inside, through a tunnel made in the wall of the esophagus with a flexible endoscope passed through the mouth.

Same target, two routes, and one consequence that separates them: when you cut the valve from the outside, you can rebuild a partial barrier against reflux at the same sitting. When you cut it from the inside, you cannot. Nearly everything that follows in this article flows from that distinction.

How the POEM procedure for achalasia actually happens

POEM takes place under general anesthesia, with the patient asleep and breathing through a tube. An endoscope, a thin flexible camera on a controllable shaft, is passed through the mouth and down the esophagus. The physician first injects fluid to lift the inner lining, then makes a small opening in that lining several centimeters above the sphincter.

The clever part is what comes next. Beneath the lining lies a loose layer called the submucosa. The endoscope slides into it and creates a tunnel down the wall of the esophagus, across the sphincter and a short way onto the stomach. From inside that tunnel, the operator cuts the inner circular muscle fibers along the whole length exposed. The tunnel entrance in the lining is then closed with small clips, and the cut muscle heals open beneath an intact surface.

Nothing is cut on the skin. Cleveland Clinic notes that the procedure commonly takes one to two hours and that many people go home the following day, often after a swallow X-ray with contrast liquid to check that the lining is sealed.

Two details matter for the comparison ahead. First, the length of the muscle cut is adjustable. Because the tunnel can be extended far up the esophagus, POEM can address spasm in the body of the food pipe, not just the valve, which is why it is frequently favored for the type III form of achalasia. Second, the procedure removes the valve’s resistance without adding anything to replace it. The muscle relaxes; the acid that was once held back by that muscle is now free to travel upward.

What happens during a laparoscopic Heller myotomy

Heller myotomy carries the name of the surgeon who first described it in 1913 as an open operation. Today it is almost always done laparoscopically, a technique in which a camera and slim instruments pass through several incisions roughly one to two centimeters wide, and the surgeon works while watching a screen.

Once the lower esophagus and the top of the stomach are exposed, the surgeon divides the muscle fibers from the outside, cutting lengthwise down the last few centimeters of esophagus and continuing a short distance onto the stomach. The inner lining is left intact, and the surgeon usually checks for any hidden breach by inflating the esophagus with air or dye while it sits underwater.

Then comes the step that defines the operation. The surgeon takes the fundus, the domed upper part of the stomach, and wraps it partway around the lower esophagus, stitching it in place. This partial fundoplication rebuilds a loose barrier where the muscular valve used to be. It is deliberately partial: a full 360-degree wrap, the kind used for ordinary reflux surgery, would be too tight for an esophagus that can no longer push against it.

Mayo Clinic describes a typical hospital stay of one to three days, with a liquid diet to start. Chest and shoulder aching from the gas used to inflate the abdomen is common for a day or two. Compared with POEM, the surgeon has less freedom to extend the muscle cut high into the chest, since the approach comes from below. What the surgeon gains is the ability to fix a hiatal hernia if one is found, and to leave the patient with a rebuilt anti-reflux mechanism in the same operation.

Why the reflux trade-off is the heart of this decision

Gastroesophageal reflux disease, usually shortened to GERD, is the backward flow of stomach acid into the esophagus often enough to cause symptoms or damage. Any myotomy invites it, because the very muscle being cut is the body’s main defense against it. The two procedures differ in what they do about that.

Heller myotomy answers with the partial wrap described above. POEM has no equivalent step. That is not an oversight; there is simply no way, working from inside the esophagus, to reposition the stomach around it.

The consequence is measurable. In the randomized European trial published in the New England Journal of Medicine comparing POEM with laparoscopic Heller myotomy plus partial fundoplication, endoscopy at three months showed reflux esophagitis, meaning visible acid injury to the lining, in 57 percent of the POEM group and 20 percent of the Heller group. By two years the gap had narrowed to 44 percent versus 29 percent, but it had not closed.

Here is the part that catches people off guard: reflux in achalasia is frequently silent. A healthy esophagus clears refluxed acid quickly with a wave of muscle contraction. An achalasia esophagus cannot, so acid may sit longer, yet the damaged nerves that would normally signal heartburn may not register it. People can feel fine and still have inflammation on endoscopy.

Practically, this means many people who choose POEM are asked to consider long-term acid suppression with a proton pump inhibitor, a class of medicines that reduces acid output by blocking the pumps in stomach-lining cells, and to accept periodic surveillance endoscopy. Whether that is an acceptable price for avoiding incisions is a personal judgment, best made with the treating team and with the numbers in front of you.

POEM vs Heller myotomy: what the head-to-head evidence really shows

For years the comparison rested on observational studies, which are vulnerable to bias about who gets offered which procedure. The multicenter randomized trial referenced above changed that. It enrolled 221 adults with achalasia across European centers and assigned them to POEM or laparoscopic Heller myotomy with partial fundoplication, then followed them for two years.

The primary yardstick was the Eckardt score, a 0-to-12 symptom scale that adds points for difficulty swallowing, regurgitation, chest pain and weight loss. A score of 3 or below counted as clinical success.

Outcome at two years	POEM	Heller myotomy + partial wrap
Clinical success (Eckardt 3 or less)	83.0%	81.7%
Serious adverse events	2.7%	7.3%
Reflux esophagitis at 3 months	57%	20%
Reflux esophagitis at 24 months	44%	29%

Read carefully, the table tells one story with two chapters. On swallowing, POEM was statistically non-inferior to surgery: the two procedures relieved symptoms about equally well over two years. On reflux, surgery held a clear advantage.

The limitations deserve equal weight. Two years is a short window for a lifelong condition. The trial did not blind participants, since the presence or absence of abdominal scars gives the assignment away. Its centers were experienced, so complication rates may not translate everywhere. And it predates much of the longer POEM follow-up now accumulating. None of this weakens the core finding; it simply means that anyone quoting a single percentage as the final word is overselling what one study can carry.

Is there a gold standard treatment for achalasia?

For most of the laparoscopic era, the honest answer was yes: Heller myotomy with a partial wrap was the benchmark against which everything else was measured. That is why so many older articles call it the gold standard, and why the phrase still turns up in search results.

The picture has shifted. Mayo Clinic now lists pneumatic dilation, POEM and Heller myotomy side by side as procedural options, with the choice depending on the subtype of achalasia, the patient’s age and health, and local expertise. Major gastroenterology guidance has moved in the same direction, treating the three as reasonable first-line choices for the common types I and II, while POEM is often favored for type III because of the longer muscle cut it allows.

Achalasia subtypes come from high-resolution manometry, the pressure-sensor study that measures how the esophagus squeezes. Type I shows almost no contraction in the body of the esophagus. Type II shows pressurization along its whole length. Type III shows disordered spasms, which is where a myotomy that reaches high into the chest earns its keep.

So the question people ask has an unsatisfying but accurate answer. There is no single gold standard anymore; there is a best fit. For someone with type II achalasia, no hiatal hernia and a strong wish to avoid lifelong acid suppression, that fit may lean toward Heller. For someone with type III spasm, prior abdominal surgery, or a body habitus that makes laparoscopy harder, it may lean toward POEM. The team that has your manometry tracing, your endoscopy photos and your medical history in front of them is the only place that judgment can be made responsibly.

Who is usually offered POEM, who is usually offered Heller, and who is asked to wait

Patterns emerge in who ends up with which procedure, even if no rule is absolute.

POEM tends to be discussed first for type III achalasia, for people whose symptoms have returned after a previous Heller myotomy, and for those with extensive prior abdominal surgery, where scar tissue makes laparoscopic access difficult. It is also the natural choice when a patient simply cannot accept abdominal incisions, or when a center’s deepest expertise is endoscopic.

Heller myotomy tends to come forward when a hiatal hernia needs repair at the same time, when a person already has significant reflux or a damaged esophageal lining, when there is a strong reason to avoid long-term acid suppression, or when a surgeon’s experience with the operation is the local strength. Younger patients with decades of potential acid exposure ahead of them sometimes lean this way for the reflux protection alone.

Some people are asked to wait, and the reasons are protective rather than dismissive:

• The diagnosis is not yet secure. A tumor at the junction can mimic achalasia, a situation called pseudoachalasia, and endoscopy must exclude it first.
• Nutrition is depleted. Significant weight loss may need correcting before any anesthetic.
• Blood-thinning medicines need a plan. Any adjustment is decided by the prescribing clinician, never by the patient alone.
• An active infection or unstable heart or lung disease needs settling.
• Pregnancy, where elective procedures are generally deferred.

A separate group, those with an end-stage, massively dilated esophagus that curves like a sigmoid, may be told that myotomy alone is unlikely to help and that a different surgical conversation is needed. That is uncommon, but it is why an early, complete workup matters more than speed.

What are the disadvantages of POEM surgery?

Search engines fill with this question because POEM is often presented as pure upside: no scars, quick discharge, adjustable cut. It has real costs, and a fair explainer lists them plainly.

Reflux leads the list, as the trial figures show. The follow-on consequences are the ones people underestimate: possible long-term acid suppression, periodic endoscopy to check the lining, and a small lifetime risk of Barrett’s esophagus, a change in the lining cells that itself needs monitoring.

Procedural risks are specific to working inside the wall of the esophagus. Carbon dioxide used to inflate the tunnel can leak into the chest or abdomen; usually it is absorbed harmlessly, but occasionally it needs a needle to release it. The lining can tear or the clips can fail, leading to a leak that may require a longer stay or a second endoscopy. Bleeding into the tunnel is uncommon but can occur.

Then there is the experience curve. POEM is technically demanding and relatively new, so long-term data beyond ten years are thinner than for Heller myotomy, and fewer centers have deep experience. The procedure also cannot repair a hiatal hernia, so if one is present it remains, and reflux may be worse for it.

Finally, if POEM fails, the options narrow slightly. Repeat POEM is possible, and so is a subsequent Heller, but scar tissue from the tunnel can complicate later surgery. None of these disadvantages makes POEM the wrong choice; the trial’s low serious-complication rate argues otherwise. They are simply the columns that belong in the ledger opposite the very real advantages, so the decision is made with the whole page visible.

Heller myotomy recovery time and the POEM timeline: what the next weeks usually look like

Both procedures share a similar first 24 hours. Most people wake with a sore throat or a bloated, gassy chest, take sips of water once the team allows, and often have a contrast swallow X-ray the next morning to confirm nothing is leaking before the diet advances.

After POEM, Cleveland Clinic describes discharge commonly the following day, with a liquid diet at first and a gradual move to soft, then normal-textured foods over roughly one to two weeks. Because there are no abdominal incisions, activity limits are light; many people return to desk work within a few days, though chest discomfort from trapped gas can linger.

After Heller myotomy, Mayo Clinic describes a hospital stay of one to three days. The diet progression is similar, but the incisions bring their own rules: avoiding heavy lifting for several weeks while the abdominal wall heals, watching the wounds for redness or discharge, and expecting shoulder-tip pain from the laparoscopy gas for a day or two. Return to sedentary work commonly falls in the one-to-two-week range, with physically demanding jobs waiting longer.

The following weeks bring the real test. Meals should go down more easily almost immediately, though some swelling at the cut site can make the first days feel unchanged. New heartburn, sour taste at night or a persistent cough should be mentioned at follow-up, because they may signal reflux that the team will want to assess. Many centers schedule a check at four to eight weeks and consider a pH study or repeat endoscopy in the months after POEM.

These ranges are typical, not promises. Age, weight, other illnesses and the extent of the myotomy all shift the timeline, and your own team’s instructions override anything written here.

Can achalasia come back after Heller myotomy or POEM?

The condition itself never left. The nerves are still absent after treatment; what the procedure changes is the mechanical resistance at the valve. So the more precise question is whether symptoms can return, and the answer is yes, for a minority, sometimes years later.

Several mechanisms explain recurrence. Scar tissue can form along the cut muscle edges and stiffen the area again. The original cut may not have extended far enough onto the stomach, leaving a band of intact muscle. After Heller myotomy, the partial wrap can occasionally be too tight or slip out of position. And in some people the esophagus continues to dilate over time regardless of what was done at the valve, so food pools from sheer capacity rather than obstruction.

The NHS notes that symptoms can return after any of the treatments and that repeat treatment is sometimes needed. The two-year trial data showing roughly 17 to 18 percent of people in each arm not meeting the strict success threshold fit that picture, and longer studies suggest the numbers drift upward slowly with time.

Recurrence is not the end of the road. Pneumatic dilation is frequently the first response, since it is quick and repeatable. POEM after a failed Heller has become a common sequence, precisely because the endoscopic approach avoids the operated field. Redo surgery remains possible for selected cases.

The message worth holding onto is that a return of food sticking is a reason to book an appointment, not a sign that the original decision was wrong or that nothing more can be done. Achalasia is managed across a lifetime, and the first procedure is one chapter in it.

Where other achalasia treatment options fit: balloon dilation, botulinum toxin and tablets

Myotomy is not the only way to loosen the valve, and understanding the alternatives makes the POEM-versus-Heller conversation clearer.

Pneumatic dilation places a specially designed balloon across the sphincter during endoscopy and inflates it forcefully enough to tear muscle fibers. Mayo Clinic and the NHS both describe it as an established option that often needs repeating, since the effect can wear off over months or years. Its main risk is a perforation, a tear through the full wall, which is uncommon but requires urgent surgical care. Its main appeal is that it is quick, needs no incisions or tunnel, and leaves every later option open.

Botulinum toxin injection works differently. Injected into the sphincter muscle through an endoscope, it blocks the nerve signal that tells muscle to contract, relaxing the valve for a few months before it wears off. The NHS positions it mainly for people who are not fit for a procedure, because repeated injections lose effect and can create scarring that complicates later myotomy.

Oral medicines from the nitrate and calcium channel blocker classes relax smooth muscle throughout the body, including the sphincter, when taken before meals. Mayo Clinic describes their benefit as modest and short-lived, with side effects such as headache and low blood pressure limiting long-term use. They are generally a bridge, not a destination.

Where does this leave someone weighing POEM against Heller? Usually with a clearer sense that the two myotomies are the durable options, that dilation is the flexible fallback if either fails, and that injections and tablets belong to a different, more cautious pathway. Which pathway is right is a clinical judgment for the treating team, informed by your manometry type, your overall health and what you are willing to trade.

What people often get wrong about POEM and Heller myotomy

Misunderstandings cluster around a few themes, and each can distort a decision.

“POEM is just Heller without the scars.” The muscle cut is similar, but the surgical approach adds a partial wrap that POEM cannot, and POEM allows a longer cut upward that Heller cannot easily match. They are cousins, not twins.

“If I don’t have heartburn, I don’t have reflux.” In achalasia the nerves that sense acid are often the same ones that are missing, so injury can be silent. That is why surveillance endoscopy is discussed, not just symptom questionnaires.

“Newer means better.” The randomized trial showed equivalence on swallowing, not superiority for POEM. Newer means less long-term data, which is a reason for humility on both sides.

“Heller is a big open operation.” That was true a century ago. Today it is almost always laparoscopic, with small incisions and a short stay.

“After treatment I can eat anything.” The valve is looser, but the esophagus still lacks its coordinated squeeze. Slow eating, upright posture and chewing well remain lifelong habits for many people.

“Reflux after POEM means the procedure failed.” The opposite is closer to the truth; reflux is often evidence that the valve was opened effectively. It is a managed consequence, not a failure.

“One treatment is forever.” Some people never need anything more. Others need a dilation years later. Both are normal courses of a chronic condition.

Clearing these up does not point to one procedure over the other. It simply moves the conversation from slogans to trade-offs, which is where good decisions get made.

Questions to ask your care team before choosing

A consultation goes better when you arrive with questions that expose the reasoning, not just the recommendation. Consider bringing a notebook and asking a companion to listen with you; the volume of new vocabulary is real.

• Which manometry type do I have, and how does that shape your preference between POEM and Heller?
• Do I have a hiatal hernia or existing reflux damage on my endoscopy, and would that be repaired or worsened by each option?
• How long a muscle cut do you plan, and why that length for my case?
• If you are recommending POEM, what is your plan for monitoring reflux afterward, and would you expect me to take acid-suppressing medicine long term?
• If you are recommending Heller, which type of partial wrap do you use, and how do you avoid making it too tight?
• How many of each procedure does this team perform, and what has your own complication experience been?
• What would you do if my symptoms return in five years?
• Which of my current medicines need to be adjusted before the procedure, and who will manage that?
• What does the first week realistically look like for someone my age with my other conditions?
• Is there any reason I should wait, or have further tests, before deciding?

Two questions are worth asking even if they feel blunt. First: if you had my findings, which would you choose and why? Clinicians often answer this thoughtfully when invited. Second: what would make you change your recommendation? The answer reveals how firmly the advice rests on your specific anatomy versus general habit.

You are entitled to a second opinion, and to time. Achalasia is rarely an emergency, and a decision that will shape decades of eating deserves more than one conversation.

When to call your doctor

Most recoveries are uneventful, but a short list of warning signs should prompt a same-day call or a trip to the emergency department, whichever your discharge instructions specify.

In the first days after either procedure, seek urgent care for a fever, severe or worsening chest pain, pain on breathing or shortness of breath, a fast heartbeat that does not settle, or swelling and a crackling feeling under the skin of the neck or chest, which can indicate leaked air. Vomiting blood or passing black, tarry stools signals bleeding. Inability to swallow even liquids or your own saliva, or severe abdominal pain with a rigid belly after Heller myotomy, needs immediate assessment. After laparoscopy, redness, spreading warmth or pus at an incision should be reported promptly.

Signs of dehydration, such as very dark urine, dizziness on standing or not passing urine for many hours, also warrant a call, since intake is often poor in the early days.

Over the following months, contact your team, without waiting for a scheduled visit, if food begins sticking again, if you wake at night coughing or with regurgitated fluid, if heartburn becomes persistent, if you notice unintended weight loss, or if swallowing becomes painful rather than merely slow. These are not emergencies in the same way, but they are the signals that a reflux assessment, an endoscopy or a repeat treatment discussion may be due.

One more thing: if anything feels wrong and is not on this list, call anyway. The team that treated you would far rather answer a question that turns out to be nothing than miss one that mattered.

Frequently asked questions

What is the gold standard treatment for achalasia?

There is no longer a single gold standard. Laparoscopic Heller myotomy with a partial wrap held that title for years, but a randomized trial found POEM non-inferior for symptom relief at two years, and Mayo Clinic lists pneumatic dilation, POEM and Heller myotomy as comparable procedural options. The best fit depends on your manometry subtype, whether you have a hiatal hernia or existing reflux, and your team’s expertise.

What are the main disadvantages of POEM surgery?

Reflux is the principal drawback, with esophagitis found in 44% of POEM patients versus 29% after Heller myotomy at two years in the randomized trial. Other considerations include possible long-term acid suppression, surveillance endoscopy, the inability to repair a hiatal hernia, procedure-specific risks such as gas leakage or a lining tear, and shorter long-term data than surgery. Serious complications were nonetheless less frequent than with surgery in that trial.

Can achalasia come back after Heller myotomy?

Symptoms can return, because the missing nerves never regrow and the procedure only reduces resistance at the valve. Scar tissue, an incomplete cut, a wrap that is too tight, or progressive dilation of the esophagus can all bring swallowing difficulty back, sometimes years later. The NHS notes repeat treatment is sometimes needed; pneumatic dilation or POEM after a prior Heller are common next steps.

What is the success rate of POEM for treating achalasia?

In the multicenter randomized trial published in the New England Journal of Medicine, 83.0% of people treated with POEM had an Eckardt symptom score of 3 or below at two years, compared with 81.7% after Heller myotomy. Success is defined by that symptom scale, not by restored esophageal function, and longer-term figures beyond two years are less certain and vary between studies.

Is POEM safer than Heller myotomy?

In the randomized trial, serious adverse events occurred in 2.7% of POEM patients and 7.3% of Heller patients, so the endoscopic route carried fewer major short-term complications in experienced hands. Safety has more than one dimension, though: POEM produced substantially more reflux esophagitis, which brings its own long-term monitoring. Which profile is safer for you depends on your anatomy and the experience of the treating team.

How long is Heller myotomy recovery time compared with POEM?

Mayo Clinic describes a hospital stay of one to three days after laparoscopic Heller myotomy, with several weeks of avoiding heavy lifting while incisions heal. Cleveland Clinic describes many POEM patients going home the next day with lighter activity restrictions. Both involve a liquid-to-soft diet progression over roughly one to two weeks. Individual timelines vary with age, other conditions and the extent of the myotomy.

Does POEM cause GERD permanently?

Not necessarily permanently, but reflux is common and can persist. The randomized trial found esophagitis in 57% of POEM patients at three months, falling to 44% at two years, suggesting some settling over time. Many people are advised to consider long-term acid suppression and periodic endoscopy. Because reflux in achalasia can be silent, the absence of heartburn does not rule it out; your team decides monitoring.

Can you have POEM after a failed Heller myotomy?

Yes, POEM after a prior Heller myotomy is a recognized approach and one of the situations where the endoscopic route is often favored, because the tunnel is created inside the esophagus and avoids the previously operated abdominal field. The team will first confirm why symptoms returned, using endoscopy and manometry, since a tight wrap or a dilated esophagus may call for a different plan.

Is the POEM procedure for achalasia painful?

POEM is performed under general anesthesia, so nothing is felt during the procedure. Afterward, a sore throat and a bloated, achy chest from the carbon dioxide used to create the tunnel are common for a day or two, and some people notice discomfort when swallowing early on. Severe or worsening chest pain, fever or breathing difficulty are not expected and should be reported urgently.

What achalasia treatment options exist without surgery or POEM?

Pneumatic balloon dilation stretches and tears the sphincter fibers during endoscopy and is often repeated over time; it is an established first-line option. Botulinum toxin injection relaxes the muscle for a few months and is mainly used for people unfit for procedures. Oral nitrate or calcium channel blocker tablets give modest, short-lived relief. Your gastroenterologist decides which, if any, suits your situation.

References

• Endoscopic or Surgical Myotomy in Patients with Idiopathic Achalasia (randomized trial, N Engl J Med) – PubMed
• Achalasia – NHS
• Achalasia – MedlinePlus Medical Encyclopedia

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.