Dr. Marie-Pierre Renaud – Gastroenterologist | Châteauguay, QC

Dr. Marie-Pierre Renaud is a dedicated Gastroenterologist specializing in the diagnosis and treatment of a wide array of disorders affecting the digestive system in adult patients, and may also see older adolescents for certain conditions. Practicing at Hôpital Anna-Laberge in Châteauguay, QC, she is a key member of the local medical community. She provides comprehensive care for a wide range of digestive system disorders, including conditions affecting the esophagus, stomach, intestines, liver, and pancreas, utilizing diagnostic and therapeutic endoscopy. Her practice adheres to the standards and ethical guidelines set by the Collège des médecins du Québec (CMQ), ensuring high-quality, patient-centered care.

Dr. Renaud holds a Medical Degree from a recognized institution and has accumulated over 6 years of experience practicing as a Gastroenterologist since 2018. She has completed extensive postgraduate training in digestive health and holds the necessary certifications to practice Gastroenterology (Comprehensive Care for Digestive System Disorders) in Quebec, demonstrating her commitment to ongoing professional development and excellence in her field.

Her clinical philosophy centers on providing evidence-based digestive health care, emphasizing patient education regarding GI conditions and lifestyle modifications. Dr. Renaud is dedicated to early and accurate diagnosis through advanced procedures, and she develops personalized treatment plans tailored to each patient's unique needs. She is committed to supporting her patients in Châteauguay with compassionate, thorough, and accessible care. Dr. Renaud speaks French fluently, ensuring effective communication and comfort for her patients.

Dr. Marie-Pierre Renaud diagnoses and treats a wide range of digestive system disorders, including:

Inflammatory Bowel Disease (IBD) Focus

• Microscopic Colitis (often considered alongside IBD for chronic diarrhea): Though distinct from classic IBD, it's an inflammatory condition of the colon diagnosed by biopsy, causing chronic watery diarrhea.
• Ulcerative Colitis (Proctitis, Left-sided Colitis, Pancolitis): A chronic inflammatory condition that causes inflammation and ulcers primarily in the lining of the large intestine (colon and rectum), typically presenting with bloody diarrhea, urgency, and abdominal pain.

Esophageal, Stomach & Upper GI Disorders

• Barrett's Esophagus & Dysplasia Monitoring: A precancerous condition in which the normal lining of the esophagus is replaced with tissue similar to the intestinal lining, often due to chronic GERD, requiring regular surveillance for dysplasia (abnormal cells).
• Gastritis (Inflammation of Stomach Lining) & Duodenitis: Inflammation of the stomach lining (gastritis) or the first part of the small intestine/duodenum (duodenitis), which can be acute or chronic and caused by various factors including infection, irritants, or autoimmune processes.

Functional Gastrointestinal & Motility Disorders

• Gastroparesis (Delayed Gastric Emptying): A condition that affects the normal spontaneous movement of the muscles (motility) in your stomach, preventing proper and timely emptying of stomach contents, leading to nausea, vomiting, and fullness.
• Chronic Idiopathic Constipation (CIC) & Opioid-Induced Constipation (OIC): Persistent constipation that does not have an identifiable underlying cause (CIC) or is a side effect of opioid medications (OIC).
• Cyclic Vomiting Syndrome: A disorder characterized by recurrent, stereotypical episodes of intense nausea and vomiting lasting for hours or days, with symptom-free intervals in between.

This list is not exhaustive. For personalized advice regarding your specific digestive condition, please consult with Dr. Marie-Pierre Renaud.

• ERCP (Endoscopic Retrograde Cholangiopancreatography) - Diagnostic & Therapeutic: Specialized procedure combining upper endoscopy and X-rays to diagnose and treat problems of the bile and pancreatic ducts, such as gallstone removal from bile duct, stent placement for strictures or leaks, and sphincterotomy.
• Colonoscopy (Screening, Diagnostic, Surveillance) & Polypectomy: Comprehensive examination of the entire colon (large intestine) using a colonoscope to detect and remove precancerous polyps, screen for and diagnose colorectal cancer, evaluate symptoms, and diagnose other colonic conditions like colitis or diverticular disease.
• Endoscopic Dilation of Gastrointestinal Strictures (Esophageal, Pyloric, Colonic): Procedure to stretch narrowed areas (strictures) in the esophagus (e.g., due to reflux, EoE), stomach outlet (pylorus), small intestine, or colon using balloons or Savary-Gilliard dilators passed through an endoscope.
• Management of Common & Chronic Digestive Symptoms: Investigating and treating common but potentially disruptive digestive symptoms such as heartburn, acid reflux, bloating, abdominal pain, cramping, excessive gas, constipation, diarrhea, difficulty swallowing (dysphagia), and unexplained weight loss.
• Personalized Nutritional Assessment & Medical Dietary Therapy for GI Conditions: Evaluation of nutritional status and provision of evidence-based dietary advice and medical nutrition therapy tailored to specific gastrointestinal disorders like IBD, IBS, celiac disease, eosinophilic esophagitis, gastroparesis, or food intolerances, often in collaboration with registered dietitians.
• Enteroscopy (e.g., Double-Balloon, Single-Balloon, Spiral Enteroscopy): Advanced endoscopic techniques allowing deep visualization, biopsy, and therapy within the small intestine, beyond the reach of standard endoscopes, for conditions like obscure bleeding or small bowel tumors.
• Gastrointestinal Motility Disorder Evaluation & Management Coordination: Initial evaluation of symptoms suggestive of GI motility disorders (e.g., gastroparesis, achalasia, chronic intestinal pseudo-obstruction), with coordination for specialized testing like esophageal manometry, antroduodenal manometry, wireless motility capsule, or gastric emptying studies, and subsequent management strategies.

Note: This list provides a general overview. Specific procedures and treatments are determined after a thorough evaluation. Discuss with Dr. Renaud for care relevant to your specific condition.

All medical and surgical services (if applicable) are provided in accordance with the standards of practice set by the Collège des médecins du Québec (CMQ) and relevant gastroenterological care guidelines. Contact the clinic or your referring physician regarding new patient intake and referral processes.

Hôpital Anna-Laberge, situated in the areas near central Châteauguay, QC, serves as a vital medical facility providing specialized digestive health care. The hospital is conveniently accessible via local public transit and is well-equipped to serve patients from the surrounding communities. The facility is wheelchair accessible, ensuring ease of access for all patients. Parking is available at or near the hospital, facilitating a smooth and comfortable visit for those seeking diagnostic and therapeutic endoscopy or consultation services with Dr. Renaud. The hospital's dedicated gastroenterology unit offers a supportive environment for comprehensive digestive health services, emphasizing patient comfort and safety.

Are consultations and procedures like endoscopies with Dr. Renaud, a Gastroenterologist, covered by Régie de l'assurance maladie du Québec (RAMQ) in QC?

Medically necessary consultations with a licensed Gastroenterologist like Dr. Renaud, as well as most diagnostic procedures (e.g., endoscopies for investigating symptoms, biopsies for medical reasons) and treatments for provincially insured digestive conditions (e.g., IBD, celiac disease, screening colonoscopies as per provincial guidelines, liver disease management), are generally covered by Régie de l'assurance maladie du Québec (RAMQ) in QC when a referral from a family doctor or another specialist is in place. Procedures considered purely for screening outside of guidelines, or for non-medical reasons, and some advanced technologies or specific drug therapies might have different coverage. It's crucial to discuss coverage specifics for any proposed treatment or procedure with Dr. Renaud's office, the hospital/clinic's financial services, or Régie de l'assurance maladie du Québec (RAMQ) beforehand.

Do I need a referral from my family doctor to see Dr. Renaud, a Gastroenterologist?

Yes, in nearly all cases, a referral from your family physician or another specialist (such as an internist or surgeon) is required to schedule an appointment with a Gastroenterologist like Dr. Renaud for services covered by the provincial health plan. Gastroenterological issues often require initial assessment and preliminary investigations by your primary care provider. The referral ensures that a specialist consultation is appropriate, helps with prioritizing appointments, and facilitates coordinated care, including the transfer of relevant medical information.

What are common reasons someone would be referred to a Gastroenterologist like Dr. Renaud?

Referral to a Gastroenterologist like Dr. Renaud is common for various reasons, including: persistent heartburn or acid reflux (GERD); difficulty or pain when swallowing; unexplained abdominal pain or bloating; chronic nausea or vomiting; significant changes in bowel habits (e.g., chronic diarrhea, severe constipation); blood in the stool or rectal bleeding; iron deficiency anemia with no obvious cause; suspected or diagnosed Inflammatory Bowel Disease (Crohn's disease, ulcerative colitis); Irritable Bowel Syndrome (IBS) not responding to initial management; celiac disease; abnormal liver function tests or suspected liver disease (like hepatitis or fatty liver); pancreatitis; or for screening and surveillance colonoscopies to prevent colorectal cancer, especially if there's a family history or personal history of polyps.

Are there significant risks associated with procedures like gastroscopy or colonoscopy?

Gastroscopy (upper endoscopy) and colonoscopy are generally very safe procedures, especially when performed by an experienced Gastroenterologist like Dr. Renaud. Complications are uncommon. Potential risks can include bleeding, particularly if polyps are removed or biopsies are taken; perforation (a tear in the wall of the digestive tract); infection (rare); or adverse reactions to the sedative medication used. Before your procedure, Dr. Renaud will thoroughly discuss the specific potential risks and benefits based on your individual health and the reason for the procedure, allowing you to make an informed decision.

Hôpital Anna-Laberge
200 boul Brisebois
Châteauguay, QC J6K 4W8

Phone: (450) 699-2425 | Fax: (450) 699-2515

The facility is wheelchair accessible.

Dr. Renaud is a licensed Gastroenterologist regulated by the Collège des médecins du Québec (CMQ) under the Medical Act in QC. A referral from a family physician or appropriate specialist is typically required for consultations with Dr. Renaud for services covered by the provincial health plan.

Verify registration with the Collège des médecins du Québec (CMQ): https://www.cmq.org/en/directory/physicians?number=17583