The Ultimate Guide to EndoFLIP Diagnostics

Do you have trouble swallowing or feel food stuck? Do you get chest pressure after eating? You may need further testing.

EndoFLIP is an advanced test of esophageal opening. It shows how the esophagus opens and stretches. It helps plan diagnosis and treatment when routine tests fall short.

Dr. Colin Dunn sees patients across Silicon Valley. He focuses on foregut problems. These include reflux, hiatal hernia, and trouble swallowing. Dysphagia means difficulty swallowing. Achalasia means the lower sphincter fails to relax. He also evaluates symptoms after prior esophageal surgery. This guide explains what EndoFLIP measures. It covers when EndoFLIP helps and how it compares. It also explains why specialist interpretation matters.

This guide is for education only. It does not replace medical care. If you have chest pain with shortness of breath, seek urgent care. Also seek urgent care for pain that goes to your jaw or arm. Get urgent care for vomiting blood or black stools. If you faint, have rapidly worse swallowing trouble, or food will not pass, go to the emergency room. Seek help for signs of dehydration or unexplained weight loss.

What is EndoFLIP?

EndoFLIP stands for endolumenal functional lumen imaging probe. It is a thin catheter with a small balloon and sensors. The balloon inflates gently inside the esophagus. Sensors measure size and pressure as the balloon inflates.

A gastroenterologist usually does the test during an upper endoscopy. Upper endoscopy is a camera test of the esophagus and stomach. You are sedated for comfort during the procedure.

EndoFLIP gives functional data on how the tube opens. The esophagogastric junction is where the esophagus meets the stomach. A regular endoscopy looks at the lining and anatomy. EndoFLIP shows how the tube behaves when stretched.

Key EndoFLIP terms

What EndoFLIP measures

EndoFLIP measures shape and pressure during balloon inflation. The main clinical question is whether the opening is too tight. It also shows if the area opens normally with gentle pressure.

EndoFLIP is a complementary test. Doctors interpret it with your symptoms and medical history. They also use endoscopy, imaging, manometry, and reflux testing. Manometry is a muscle-pressure test of the esophagus.

When EndoFLIP may be recommended

EndoFLIP is considered when opening dynamics matter. It is not routine for all reflux patients.

Common situations where EndoFLIP may help:

EndoFLIP is most useful when it answers a specific question. It is one step in a diagnostic pathway. That pathway often includes endoscopy, barium swallow, manometry, and reflux testing.

EndoFLIP for difficulty swallowing and dysphagia

Dysphagia means difficulty swallowing. People may say food sticks in the chest or throat. Some need liquids to help swallow food. Others cough while eating or have chest pressure after swallowing.

EndoFLIP can show whether the esophagus or junction opens normally. This helps when symptoms return or other tests are unclear.

Other tests that often work together:

• Upper endoscopy looks for inflammation, narrowing, or retained food.

• Barium swallow (esophagram) shows how contrast moves through the esophagus.

• Esophageal manometry measures muscle contractions and sphincter relaxation.

If swallowing problems include choking, aspiration, or voice change, see ENT or speech therapy first. EndoFLIP focuses on the esophagus and does not replace those tests.

EndoFLIP for achalasia evaluation

Achalasia is when the lower esophageal sphincter does not relax properly. The esophagus then struggles to move food into the stomach. Symptoms include progressive swallowing trouble and regurgitation. Patients may also have chest discomfort, weight loss, or nighttime coughing.

Manometry is central to diagnosing achalasia. Manometry shows pressure patterns and sphincter relaxation. EndoFLIP adds data about how the junction opens and its distensibility. This extra data helps with diagnosis and procedure planning.

Typical achalasia workup includes:

• Upper endoscopy to rule out structural causes.

• Barium swallow to show delayed emptying or shape changes.

• Esophageal manometry to confirm achalasia subtype.

• EndoFLIP for junction distensibility data.

• Specialist consultation to combine results and discuss options.

EndoFLIP can also be used during some procedures for real-time feedback. It does not replace the full achalasia workup.

EndoFLIP, GERD, and hiatal hernia

GERD means gastroesophageal reflux disease or acid reflux. Reflux and hiatal hernia can cause heartburn and regurgitation. They can also cause throat symptoms, cough, and swallowing trouble. These symptoms can result from different causes.

EndoFLIP should not be used alone to diagnose GERD. For reflux, standard workup usually includes endoscopy and reflux monitoring. Manometry is often needed before surgery.

EndoFLIP may help selected reflux or hernia patients. It is useful when opening dynamics, tissue stiffness, or prior surgery affect planning. For example, EndoFLIP can guide decisions about fundoplication, LINX, or hernia repair. It is one piece of the overall evaluation.

Preoperative questions often include:

• Is reflux objectively present?

• Is a hiatal hernia present and how large is it?

• Does the esophagus move food normally?

• Is achalasia or another motility disorder present?

• Is there concern for tightness, stiffness, or altered opening?

The right tests answer the questions that matter for safe care.

How EndoFLIP compares with other tests

EndoFLIP does not replace other tests. It answers different questions and adds functional data.

The best evaluation matches tests to your symptoms and goals. A person with classic heartburn needs a different path than someone with progressive dysphagia.

What to expect during an EndoFLIP procedure

EndoFLIP is usually done during an upper endoscopy while sedated. The endoscope guides the catheter into place. The balloon inflates gently while the system records pressure and size. After measurements, the balloon deflates and the catheter is removed.

Typical steps:

The balloon measurement takes about 15 minutes. Total appointment time is longer for prep and recovery. Some patients have a mild sore throat afterward.

How EndoFLIP results may influence treatment planning

EndoFLIP results are useful when they answer a specific question. A single measurement does not decide treatment. Doctors interpret results with symptoms, endoscopy, manometry, and imaging.

EndoFLIP is valuable for how it fits into the whole clinical picture. Doctors do not treat a single number by itself.

Who may not need EndoFLIP

EndoFLIP is not needed for every patient with heartburn or mild swallowing trouble. Reasons you may not need EndoFLIP:

• Classic, uncomplicated reflux where medicine and lifestyle help first.

• Urgent or alarm symptoms that need immediate evaluation.

• Throat-level choking or aspiration pointing to ENT or speech therapy.

• Need to confirm acid exposure, where reflux testing is more relevant.

• Need to diagnose a motility subtype, where manometry is key.

If Dr. Dunn does not recommend EndoFLIP, your symptoms are not ignored. It means another test may be a better next step.

Why choose NorCal Integrity Surgery for EndoFLIP evaluation

Foregut problems involve anatomy, reflux, swallowing mechanics, and prior surgery. Dr. Colin Dunn brings focused foregut expertise to Los Gatos and nearby areas. His training includes general surgery, foregut-focused experience, and board certification.

What this means for patients:

• Foregut-focused evaluation that considers reflux, hernia, and dysphagia.

• Thoughtful diagnostic planning that may include EndoFLIP with other tests.

• Careful counseling about when surgery may help and when other options are better.

• Local access to specialized care in Los Gatos and nearby communities.

If you are beginning evaluation, review patient information on GERD, hiatal hernia, or achalasia. If you need advanced diagnostics, an EndoFLIP consultation can clarify next steps.

Questions to ask at an EndoFLIP consultation

Ask questions that clarify purpose and impact. Examples:

• What specific question are we trying to answer with EndoFLIP?

• Do I need manometry, barium swallow, reflux testing, or endoscopy first?

• Could my symptoms be caused by achalasia, reflux, or prior surgery?

• How will the EndoFLIP result change treatment planning?

• What symptoms should prompt urgent care instead of waiting for testing?

• If EndoFLIP is normal, what will we evaluate next?

A good consultation should move from uncertainty to a clear plan.

Frequently asked questions

Is EndoFLIP painful?

EndoFLIP is usually done while you are sedated. Most patients do not feel pain. Some people report a mild sore throat afterward.

How long does EndoFLIP take?

The balloon measurement takes about 15 minutes. Total visit time is longer for prep, sedation, and recovery.

Is EndoFLIP the same as esophageal manometry?

No. Manometry measures muscle activity during swallowing. EndoFLIP measures pressure and size during balloon inflation. They provide complementary information.

Can EndoFLIP diagnose GERD?

No. EndoFLIP should not be used alone to diagnose GERD. It may add useful information in selected patients with mixed symptoms.

Can EndoFLIP help with achalasia?

Yes, in selected cases. EndoFLIP can assess junction distensibility and sphincter opening. It is usually interpreted with manometry, endoscopy, and barium swallow.

Do I need EndoFLIP before reflux or hiatal hernia surgery?

Not always. EndoFLIP may be considered when extra functional data would help planning. The decision is individualized.

Can EndoFLIP be used during Heller myotomy or POEM?

EndoFLIP can be used during some procedures for real-time feedback. Use depends on the clinical setting and the surgeon's judgment.

What happens if EndoFLIP is abnormal?

An abnormal result does not automatically mean surgery. Dr. Dunn will review results with your symptoms and other tests. He will discuss treatment options and next steps.

What happens if EndoFLIP is normal?

A normal result may reassure the area tested. It does not always explain every symptom. Other evaluations may still be needed.

Who is a good candidate for an EndoFLIP consultation?

Good candidates include people with food sticking or swallowing trouble. Also consider EndoFLIP for suspected achalasia, complex reflux, or hernia symptoms. A specialist consultation can guide the next steps.

Request an EndoFLIP consultation in Los Gatos

If you have chronic reflux, food sticking, or chest pressure after meals, a foregut-focused evaluation can help. Request a consultation with Dr. Colin Dunn to learn whether EndoFLIP belongs in your workup. Call NorCal Integrity Surgery or request an appointment online to schedule an advanced esophageal evaluation.