Key Takeaways
- Gastroparesis is delayed stomach emptying with no physical blockage, confirmed through objective testing, not symptoms alone.
- Common symptoms include early fullness, nausea, vomiting, bloating, and unintended weight loss.
- Treatment escalates from diet and medication to procedural and surgical options based on severity and response.
- Dr. Darido developed Antrum-Preserving Longitudinal Gastrectomy (APLG), a technique for medically refractory gastroparesis that preserves the stomach’s pumping mechanism.
- Dr. Darido personally performs every diagnostic study and procedure, so the surgeon who evaluates you is the one who treats you.
Gastroparesis is a digestive disorder in which the stomach empties food more slowly than normal, even though there is no physical blockage in the stomach or intestines.
Dr. Elias Darido evaluates every gastroparesis patient personally at Houston Heartburn & Reflux Center. He combines detailed diagnostic testing with a full range of treatment options, from diet and medication to surgery for patients whose symptoms have not responded to standard care.
On This Page
What Is Gastroparesis?
Gastroparesis, also called delayed gastric emptying, is a disorder of stomach motility. The ACG, American College of gastroenterology, Clinical Guideline defines it as symptoms of food retention plus objective evidence of delayed emptying, with no mechanical obstruction at the stomach outlet.
That distinction matters. Scar tissue, an ulcer, or a tumor can cause identical symptoms and needs entirely different treatment, so testing comes before any treatment decision.
Population-based data on how common gastroparesis is remains limited, though epidemiological research shows diagnoses and hospitalizations appear to be rising.
What Are the Symptoms of Gastroparesis?
Nausea and vomiting are the defining symptoms, usually alongside bloating and uncomfortable fullness after meals, according to the Mayo Clinic. Common symptoms include:
- Feeling full after only a few bites, then uncomfortably full for hours
- Nausea and vomiting, sometimes of undigested food eaten hours earlier
- Bloating and upper abdominal pain or pressure
- Poor appetite and unintended weight loss
- Unpredictable blood sugar swings in patients with diabetes
- Heartburn or acid reflux symptoms
- Constipation
Symptom severity does not track neatly with how delayed emptying looks on testing, as an AGA, American Gastroenterological Association, review notes. A modest delay can still cause severe symptoms, and the daily toll is significant: one study of patients with diabetes and gastroparesis symptoms found impaired quality of life, with 47% reporting anxiety symptoms and 38% reporting depression symptoms.
What Are the Causes and Risk Factors of Gastroparesis?
Diabetes is the best-understood cause, because long-standing or poorly controlled diabetes damages the nerves that coordinate stomach contractions. In the only community-based study of its kind, the 10-year cumulative incidence was roughly 5% in type 1 diabetes and 1% in type 2 diabetes.
Other recognized causes and risk factors include:
- Prior surgery on the stomach or esophagus, which can injure the vagus nerve
- Certain medications, including opioids and some antidepressants
- Neurological conditions, such as Parkinson’s disease
- Connective tissue disorders, such as scleroderma
- Unknown causes, known as idiopathic gastroparesis
In many patients, testing confirms delayed emptying but no clear cause is ever found. Idiopathic gastroparesis is treated just as seriously as gastroparesis with a known cause.
Diagnosis follows a sequence as outlined by NIDDK, national Institute of Diabetes and Digestive and Kidney Diseases. Upper endoscopy first rules out an ulcer, narrowing, or mass. Emptying is then measured objectively. The 2025 AGA guideline recommends a 4-hour gastric emptying study and advises against the shorter 2-hour version, which misses cases. Medications that slow the stomach and elevated blood sugar are addressed first, since both distort results.
Dr. Darido personally performs each diagnostic study, including endoscopy, manometry, pH and impedance testing, and UGI contrast study, so results guide treatment without delay.
Treatment Options for Gastroparesis
Treatment starts conservatively and escalates only as needed, based on cause, symptom severity, and how a patient responds to earlier steps.
Diet and Lifestyle Changes
- Eating smaller, more frequent meals
- Reducing fat and fiber, which slow stomach emptying
- Chewing food thoroughly and eating more slowly
- Staying upright for a period after meals
For patients with diabetes, tightening glucose control is part of treatment, not separate from it.
Medications
The AGA guideline conditionally recommends metoclopramide or erythromycin as initial therapy. Metoclopramide carries real limits: the FDA boxed warning advises against use beyond 12 weeks, because the risk of tardive dyskinesia, a potentially irreversible movement disorder, rises with duration and dose. Antiemetic medications control nausea but do not improve emptying.
Procedural and Surgical Options
The same AGA guideline advises against routine early use of pyloromyotomy or gastric electrical stimulation, reserving both for selected patients whose symptoms resist medical therapy. Options considered when diet and medication are not enough include:
- Gastric electrical stimulation, a device implanted to help control nausea and vomiting
- Pyloric procedures, such as pyloroplasty, pyloromyotomy, or G-POEM, which widen the outlet of the stomach
- Antrum-Preserving Longitudinal Gastrectomy (APLG), a technique Dr. Darido developed for medically refractory gastroparesis
No established surgical guideline exists for medically refractory gastroparesis, and conventional options, including gastric pacing, pyloromyotomy, and gastric bypass, have produced limited, inconsistent success. Standard Gastric Sleeve Surgery is the wrong operation for this problem, because it removes part of the antrum, the segment of the stomach that drives emptying.
Dr. Darido developed APLG, a minimally invasive operation that reduces stomach volume along the Magenstrasse groove while preserving the antrum, and repairs a hiatal hernia at the same time when one is present. He has used this approach since 2015 in more than 50 patients, as an outpatient procedure performed laparoscopically in about one hour, with most patients going home the same day and resuming full activity in about one week. He published on this technique for diabetic gastroparesis in Surgery for Obesity and Related Diseases.
APLG may be considered for patients with medically refractory gastroparesis, or gastroparesis that has not improved after a prior procedure. Candidacy is determined after a full workup, including a review of medical history and prior surgery, upper endoscopy, an upper GI study, and a gastric emptying study.
As with any surgery, APLG carries risk. The risk of a serious complication is estimated at less than one percent. APLG is a newer, evolving technique. No large prospective randomized studies have established a formal success rate, and there is no guarantee of outcome. Dr. Darido reviews the experimental nature of APLG and realistic expectations with every candidate.
About Dr. Elias Darido, MD, FACS
Dr. Elias Darido, MD, FACS, is an acid reflux specialist based in Houston, Texas, and the sole physician at Houston Heartburn & Reflux Center. He is board certified by the American Board of Surgery and a Fellow of the American College of Surgeons, with fellowship training in advanced laparoscopic surgery of the upper digestive tract at the University of North Carolina, Chapel Hill, and fellowship training in metabolic and bariatric surgery. He has over 15 years in specialized practice and has performed more than 1,000 Nissen Fundoplications.
Dr. Darido developed the Antrum-Preserving Longitudinal Gastrectomy (APLG) technique for medically refractory gastroparesis. Read more on his full bio page.
“Every gastroparesis patient deserves a chance to restore normal stomach emptying, to enjoy eating a meal without nausea and pain, to be able to function, work and contribute to society like everyone else. Restoring stomach emptying is a daunting task, but there is always hope. APLG is still at its infancy. We still have a lot to learn about how best to use this technique to deliver the best outcome possible to our patients.”
Why Choose Dr. Darido
Dr. Darido evaluates every gastroparesis case with a full picture of stomach anatomy and function. He performs all preoperative diagnostic studies himself, including endoscopy, manometry, and gastric emptying testing. This hands-on approach lets him tailor treatment to each patient’s specific pattern of stomach dysfunction. Patients from Houston, The Woodlands, Katy, Sugar Land, and Pearland turn to him for complex or refractory gastroparesis care, along with patients traveling from across the United States.
Frequently Asked Questions
Is gastroparesis curable?
Gastroparesis is usually a chronic condition, though many patients find lasting relief with treatment. The right combination of diet, medication, or procedural care depends on the individual.
Can diet help gastroparesis?
Yes, changing what and how a patient eats can reduce symptoms for many people. Smaller meals, along with lower fat and fiber intake, are common first steps.
When should I see a specialist for gastroparesis?
Patients should see a specialist if symptoms persist despite diet changes or over-the-counter remedies, or if nausea, vomiting, or weight loss become severe.
Is gastroparesis the same as GERD?
No, gastroparesis and GERD (gastroesophageal reflux disease) are different conditions, though they can occur together and cause overlapping symptoms.
What is a gastric emptying study like?
Plan for about four hours. You eat a standardized meal containing a small amount of tracer, then imaging measures how much food remains in your stomach through hour four.
Will I need to stay overnight in the hospital for gastroparesis surgery?
No. Dr. Darido performs Antrum-Preserving Longitudinal Gastrectomy as an outpatient procedure, and most patients resume full activity in about one week.
What Patients Are Saying
I cannot express enough gratitude to Dr. Darido for saving my life. I was suffering from severe gastroparesis, and my condition had reached a point where I was ready to give up. I relied on a G/J Tube for daily venting and a Central Line for TPN, and I could barely get out of bed due to debilitating nausea and excruciating pain. Multiple doctors had told me there was nothing more they could do, and I was left to believe that my life was coming to an end.
In a desperate search for hope, I came across Dr. Darido through a Facebook support group and decided to seek his help as a last resort. From the moment I met him, I knew I was in the right hands. He performed surgery, and almost immediately, I began to feel better.
Over time, my improvement has been nothing short of miraculous. My G/J Tube was removed, followed by my Central Line, and just this week, a follow-up test confirmed that my gastroparesis is completely gone. After almost five years, I can eat and drink again. Four months post-op, I feel 20 years younger and am back to living a life that is enjoyable and full of joy.
Dr. Darido’s expertise, compassion, and dedication gave me back the life I thought I had lost. I wholeheartedly recommend him to anyone facing similar challenges. He truly is a life-saver.
*Individual results vary, and these experiences do not predict any outcome.
Gastroparesis is a common condition, and treatment needs vary widely from patient to patient. This page is educational and is not a substitute for a consultation with a qualified physician. Please speak with a doctor about your specific symptoms and treatment options.
