Gallbladder stones affect millions of people across India, and while surgery remains the definitive cure, not every patient is an immediate candidate for an operation. In such cases, a biliary stent offers a critical bridge — relieving obstruction, managing pain, and protecting the liver and bile ducts from further damage.
As an experienced Gastroenterologist in Pune, Dr. Ksheetij Kothari frequently performs stent placement procedures for patients with gallbladder and bile duct complications. This guide explains everything you need to know about stents for gallbladder stones — in clear, simple terms.
What Is the Purpose of a Stent for Gallbladder Stones?
A stent is a small, flexible tube inserted into the bile duct to keep it open when a gallstone is causing a blockage. When gallstones migrate from the gallbladder into the common bile duct (choledocholithiasis), they obstruct the normal flow of bile from the liver into the small intestine. This blockage leads to jaundice, severe abdominal pain, fever, and — if untreated — life-threatening infections like cholangitis or acute pancreatitis.
The primary purposes of biliary stenting include:
Relieving bile duct obstruction
Restoring bile flow immediately to prevent liver damage and infection.
Managing jaundice
Stenting rapidly reduces bilirubin levels, reversing yellowing of the skin and eyes.
Pre-surgical stabilization
In high-risk patients, a stent is placed temporarily to stabilize their condition before definitive surgery (cholecystectomy).
Palliation in advanced cases
For patients who are not surgical candidates due to age or comorbidities, a stent provides long-term symptom relief and quality of life.
Jaundice or Severe Abdominal Pain? Don’t Wait — Get Immediate Expert Care.
Symptoms You Should Not Ignore
When a gallstone obstructs the common bile duct (CBD), the body sends clear warning signals. If you experience any of the following symptoms, seek immediate medical attention from a Gastroenterologist in Pune — these indicate a blocked bile duct that requires urgent intervention:
- Yellowing of eyes/skin (Jaundice)
- Dark urine
- Pale stools
- Fever with chills
- Severe upper abdominal pain
When Is a Biliary Stent Needed?
Not every gallstone requires a stent, but in the following clinical situations, biliary stenting becomes a necessary and often urgent intervention:
Jaundice due to CBD stones
A stone blocking the common bile duct causes obstructive jaundice requiring immediate decompression via stenting.
Acute cholangitis
A life-threatening infection of the bile duct that demands emergency ERCP and stent placement to drain infected bile and control sepsis.
Gallstone pancreatitis with obstruction
When a gallstone triggers acute pancreatitis by blocking the pancreatic duct opening, urgent stenting relieves the dual obstruction and halts further organ damage.
Large or impacted stones
Stones too large for immediate extraction are bypassed with a stent to restore bile flow while advanced stone fragmentation (lithotripsy) is planned.
High-risk surgical patients
Elderly patients or those with serious comorbidities who cannot safely undergo general anesthesia benefit from stenting as a long-term, non-surgical management option.
Bridge to cholecystectomy
A temporary stent stabilizes the patient’s condition and clears infection before laparoscopic gallbladder removal (cholecystectomy) is performed safely.
What Is the Procedure for Placing a Stent?
Biliary stent placement is performed using a technique called ERCP — Endoscopic Retrograde Cholangiopancreatography. It is a minimally invasive endoscopic procedure that requires no surgical incision and is typically completed within 45–60 minutes.
Here is a step-by-step overview of the procedure:
Preparation
The patient fasts for 6–8 hours before the procedure. Blood thinners and certain medications may be paused. An IV line is placed for sedation or anesthesia.
Sedation
The patient is placed under conscious sedation or general anesthesia to ensure comfort throughout.
Endoscope insertion
A thin, flexible endoscope is passed through the mouth, down the esophagus and stomach, and into the duodenum (the first part of the small intestine), where the bile duct opens.
Cannulation and imaging
A fine catheter is guided into the bile duct opening. Contrast dye is injected and X-ray imaging (fluoroscopy) is used to identify the exact location and size of the obstruction.
Stone removal or bypass
If possible, the stone is directly extracted using a balloon or basket catheter. If the stone is too large or impacted, the stent is placed alongside or past it to bypass the blockage.
Stent deployment
The stent is carefully positioned across the blocked segment, immediately restoring bile flow. The endoscope is then gently withdrawn.
Most patients are kept under observation for 2–4 hours post-procedure and can be discharged the same day or after an overnight stay. Dr. Ksheetij Kothari, Gastroenterologist in Pune, performs ERCP with advanced endoscopic precision, ensuring high procedural success rates with minimal discomfort.
Types of Stents and Their Benefits
The choice of stent depends on the nature and severity of the obstruction, the patient’s overall condition, and whether the stenting is intended as a temporary or long-term measure.
Plastic Biliary Stents (PBS)
The most commonly used stents for gallstone-related obstruction. Made of polyethylene or polyurethane, they are cost-effective, easy to insert, and simple to remove or exchange. They are ideal for short-term use (typically 3–4 months) while planning for surgery. Their main limitation is a tendency to clog with bile sludge over time.
Self-Expanding Metal Stents (SEMS)
Made of braided metal mesh (usually nitinol or stainless steel), these stents expand to a much wider diameter than plastic stents, offering superior bile flow and significantly longer patency — up to 6–12 months. They are preferred for patients who are not surgical candidates or for managing malignant bile duct strictures. Uncovered SEMS can embed into the duct wall, making them difficult to remove. Covered SEMS are removable and are increasingly used even in benign conditions.
Fully Covered Self-Expanding Metal Stents (fcSEMS)
A newer generation of metal stents with a silicone or polymer coating that prevents tissue ingrowth, making removal easier. Particularly useful in patients where long-term stenting may be required with periodic replacement.
Biodegradable Stents
An emerging category still under clinical evaluation. These stents dissolve naturally over time, potentially eliminating the need for a removal procedure — a promising option for the future of biliary stenting.
Blocked Bile Duct Can Turn Dangerous Fast — Get Diagnosed Today
What Are the Risks Associated with Stents?
While biliary stenting via ERCP is generally safe and well-tolerated, like any medical procedure, it carries certain risks. Being aware of these helps patients make informed decisions alongside their doctor.
Post-ERCP Pancreatitis
The most common complication, occurring in 3–5% of cases. It involves inflammation of the pancreas due to irritation from the catheter. Most cases are mild and resolve with conservative management, but severe cases may require hospitalization.
Stent Occlusion (Blockage)
Particularly with plastic stents, bile sludge and bacteria can accumulate inside the stent over time, causing it to block. This typically presents as recurrence of jaundice or fever and requires stent replacement.
Stent Migration
Occasionally, a stent can shift from its intended position — either inward (into the bile duct) or outward (into the bowel). This may require a repeat endoscopic procedure to reposition or retrieve it.
Cholangitis (Bile Duct Infection)
A blocked or migrated stent can lead to infection within the bile duct, presenting with fever, chills, jaundice, and right upper abdominal pain — the classic Charcot’s triad. Prompt antibiotic treatment and stent exchange are required.
Bleeding or Perforation
Rare but serious complications that may occur during the ERCP procedure itself, particularly during sphincterotomy (widening of the bile duct opening).
Allergic Reaction to Contrast Dye
Some patients may react to the X-ray contrast dye used during ERCP. Patients with known dye allergies are pre-medicated to reduce this risk.
The risk of complications is significantly reduced when ERCP and stenting are performed by an experienced endoscopist. Dr. Ksheetij Kothari, Gastroenterologist in Pune, has performed a high volume of ERCP procedures and follows strict peri-procedural protocols to minimize patient risk.
Replacement Period of Stents
One of the most important aspects of biliary stent management is timely replacement — a detail that many patients overlook, sometimes with serious consequences.
Plastic stents
Must be replaced every 3 to 4 months, even if the patient is asymptomatic. After this period, the stent is highly likely to become clogged with bile sludge, leading to infection or recurrence of jaundice. Regular follow-up with a Gastroenterologist in Pune is essential to ensure timely exchange.
Uncovered metal stents
Generally not designed for removal or routine replacement. They remain in place until end of life (in palliative cases) or until a surgical bypass is performed. They tend to last 6–12 months before occlusion may occur.
Covered and fully covered metal stents
Can be removed or exchanged. In benign conditions like gallstone-related strictures, they are typically replaced or removed after 6–12 months, based on the patient’s clinical response and imaging findings.
Missing the stent replacement window is one of the most common — and avoidable — causes of cholangitis and emergency hospitalization. Dr. Ksheetij Kothari, Gastroenterologist in Pune, provides structured follow-up scheduling for all stented patients to ensure replacement is never missed.
Conclusion
A stent for gallbladder stones is not a permanent cure — but it is a vital, potentially life-saving intervention that buys time, relieves suffering, and protects vital organs while a definitive treatment plan is put in place. Whether you need a stent as a bridge to surgery or as part of long-term management, the outcome depends heavily on the skill of your endoscopist and the quality of your follow-up care.
If you or a loved one is experiencing symptoms of a blocked bile duct — jaundice, severe abdominal pain, fever, or dark urine — do not delay. Consult Dr. Ksheetij Kothari, a trusted Gastroenterologist in Pune, for expert evaluation and prompt, evidence-based treatment.
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FAQs
Can a stent be put in the gallbladder?
Stents are not typically placed inside the gallbladder itself. They are placed in the common bile duct or the cystic duct to relieve obstruction caused by gallstones. In rare cases, a transpapillary gallbladder stent (via ERCP) or an endoscopic ultrasound-guided transmural stent (EUS-GBD) may be placed for acute cholecystitis in patients unfit for surgery — but these are specialized procedures performed by expert endoscopists.
What food to avoid with gallstones?
Patients with gallstones should avoid fried and fatty foods, full-fat dairy products, red meat, refined carbohydrates (white bread, sugary snacks), and processed foods high in trans fats. These foods stimulate the gallbladder to contract, which can trigger pain and worsen symptoms. A diet rich in fiber, fruits, vegetables, and healthy fats (like those in nuts and olive oil) is generally recommended. Always consult a Gastroenterologist in Pune for a personalized dietary plan.
How long do you stay in the hospital after a stent?
For routine ERCP with stent placement in a stable patient, the hospital stay is typically 1 to 2 days. Patients are observed for post-procedure complications such as pancreatitis, bleeding, or infection. If the stenting was performed on an emergency basis for acute cholangitis or severe jaundice, the hospital stay may extend to 3–7 days depending on the patient’s recovery. Discharge is based on clinical stability and resolution of the precipitating condition.
How long can a stent stay in your gallbladder?
Plastic biliary stents should not remain in place for more than 3–4 months, as they tend to block with bile sludge and increase infection risk beyond this period. Covered metal stents can remain for 6–12 months. Uncovered metal stents used in palliative settings may stay indefinitely, lasting until occlusion occurs. Stent duration is always determined by the underlying condition, patient response, and the clinical judgment of your Gastroenterologist in Pune.
