How to Prepare for an ERCP Procedure
Preparation Makes the Difference Between a Smooth Procedure and a Complicated One
Being referred for an ERCP can feel daunting, especially if you have never had an endoscopic procedure before. The good news is that ERCP is a well-established, routinely performed procedure, and with the right preparation, the vast majority of patients go through it comfortably and recover quickly. What happens in the hours and days before your procedure matters enormously — proper preparation protects you from complications, ensures the gastroenterologist can perform the procedure safely and effectively, and sets the stage for a smooth recovery afterward.
At Alnoor Diagnostic Centre in Shadman, Lahore, we guide every patient through the preparation process clearly and thoroughly so that nothing is left to guesswork on the day of the procedure.
Fasting — The Most Important Preparation Requirement
The single most critical preparation step before ERCP is fasting. You must have an empty stomach before the procedure begins. This is not simply a precaution — it is a patient safety requirement. The endoscope passes through the mouth, down the oesophagus, and into the stomach. If food or liquid is present in the stomach, it can be regurgitated and accidentally inhaled into the lungs during the procedure — a serious complication called aspiration pneumonia that is entirely preventable with proper fasting.
As a general rule, patients are required to stop eating solid food for at least six to eight hours before ERCP. Clear liquids — water, plain tea without milk — may be permitted up to two to four hours before the procedure, but this depends on your gastroenterologist’s specific instructions. Follow whatever your doctor tells you precisely. Do not assume that a small snack or a cup of milk tea will not matter — it does, and it may result in your procedure being postponed for patient safety reasons.
If your ERCP is scheduled for the morning, stop eating after your evening meal the night before and do not eat or drink anything after midnight. If it is scheduled for the afternoon, your doctor will give you specific instructions about a light early breakfast and when to stop eating and drinking.
Medications — What to Continue and What to Stop
Managing your regular medications before ERCP requires specific attention and should always be guided by your gastroenterologist. Do not stop or adjust any medication without explicit medical advice.
Blood-thinning medications require particular attention. Aspirin, warfarin, clopidogrel, and newer anticoagulants such as rivaroxaban and dabigatran increase the risk of bleeding during ERCP, particularly if a sphincterotomy — a small cut at the bile duct opening — is planned. Your doctor will advise you on whether to stop these medications, when to stop them, and when it is safe to restart them after the procedure. This decision depends on why you are taking the medication and the balance of bleeding risk versus clotting risk for your specific situation.
Diabetic medications also need careful management. Since you will be fasting, your usual dose of insulin or oral diabetic medication may need to be adjusted to prevent hypoglycaemia — dangerously low blood sugar. Your doctor or diabetologist will guide you on how to manage your diabetes medications around the procedure. Never skip this discussion if you are diabetic.
Non-steroidal anti-inflammatory drugs such as ibuprofen and diclofenac are generally stopped a few days before ERCP. Iron supplements are typically stopped a few days in advance as they can interfere with visibility during the procedure. Most other regular medications — blood pressure tablets, thyroid medications, and heart medications — are usually continued and taken with a small sip of water on the morning of the procedure, but confirm this with your doctor specifically.
Informing Your Doctor — What They Need to Know
Before your ERCP, your gastroenterologist needs a complete picture of your medical history. Be thorough and honest about everything relevant. Inform your doctor about all medications you are currently taking, including herbal remedies and supplements. Tell them about any allergies — particularly to medications, iodine, or contrast dye. If you have had a previous reaction to contrast dye during any imaging investigation, this must be communicated clearly as contrast is used during ERCP.
Inform your doctor if you have any bleeding disorders, liver disease, kidney disease, heart conditions, or lung conditions that may affect sedation planning. If you have had previous abdominal surgery — particularly gastric bypass surgery or bowel resection — this alters the anatomy through which the endoscope travels and your surgeon must know in advance.
If there is any possibility that you are pregnant, inform your doctor immediately. ERCP involves fluoroscopy — real-time X-ray — and appropriate precautions must be taken if pregnancy is possible.
Arranging Transportation and a Companion
ERCP is performed under sedation. Even if you feel alert and normal shortly after the procedure, the sedative medications affect judgement, coordination, and reaction time for several hours afterward. You must not drive yourself home under any circumstances. Arrange for a responsible adult — a family member or trusted friend — to accompany you to the procedure and drive you home afterward.
Plan to have someone stay with you at home for the remainder of the day following your ERCP. You should rest, avoid making important decisions, and refrain from operating machinery or signing legal documents while the sedation is still clearing from your system.
What to Wear and Bring on the Day
Wear loose, comfortable clothing on the day of your procedure. You will be asked to change into a hospital gown before ERCP, so clothing that is easy to remove is practical. Leave jewellery, valuables, and unnecessary items at home. Bring your identification, your referral letter from your physician, any recent blood test results, imaging reports, and a list of your current medications.
If you wear dentures, you will be asked to remove them before the procedure. If you wear glasses or hearing aids, arrange to remove these before the procedure begins and have a safe place to store them.
Mental Preparation — What the Procedure Actually Feels Like
Many patients feel anxious about ERCP, particularly about the idea of a camera passing down the throat. It helps to understand that sedation makes the procedure comfortable for the vast majority of patients. Most patients have little or no memory of the procedure itself afterward. The sedative is administered intravenously before the endoscope is introduced, and its effects are fast-acting.
You may feel mild bloating or discomfort in the abdomen after the procedure as air used during the endoscopy is expelled. Mild throat soreness is common and settles within a few hours. These are expected and temporary sensations, not signs of a complication.
ERCP at Alnoor Diagnostic Centre, Lahore
At Alnoor Diagnostic Centre in Shadman, Lahore, our team guides every patient through preparation with clear, personalised instructions. Our gastroenterologists are available to answer any questions you have before your procedure so that you arrive feeling informed, calm, and fully prepared.