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Can bladder stones be dissolved without surgery?

Some types of stones, particularly struvite stones, can be dissolved with strict adherence to prescription diets; however, others, such as calcium oxalate stones, require surgical removal.

How long does the surgery take?

A standard cystotomy typically takes 45 to 90 minutes, depending on the number and size of the stones.

Will my pet need to be on a special diet forever?

Many pets require a specialized urinary diet long-term to prevent the recurrence of stones, as the underlying propensity for crystal formation often remains.

What is the success rate of a cystotomy?

The surgery is highly successful in removing the stones. Long-term success depends on managing the pet's diet and hydration to prevent new stones from forming.

Is a cystotomy painful for pets?

While the procedure is painful, veterinarians provide comprehensive pain management protocols, including post-operative analgesics, to ensure the pet remains comfortable during recovery.

Overview of Cystotomy

A cystotomy is a surgical procedure performed to enter the urinary bladder, typically to remove uroliths, or bladder stones. According to the American College of Veterinary Surgeons, this procedure is one of the most common soft tissue surgeries performed in veterinary medicine. Bladder stones can cause significant discomfort, obstruction, or recurring urinary tract infections if left untreated. While some stones may be dissolved through specialized prescription diets, surgical intervention is often required when stones are too large, composed of non-dissolvable minerals, or when the patient is experiencing a life-threatening blockage of the urethra.

Causes and Risk Factors

Bladder stones occur when high concentrations of minerals in the urine crystallize and form hard, pebble-like masses. Per the Merck Veterinary Manual, several factors contribute to stone formation, including bacterial infections, genetic predisposition, and dietary composition. Certain breeds are at a higher risk; for example, Dalmatians are genetically prone to urate stones, while Schnauzers and Shih Tzus frequently develop struvite or calcium oxalate stones. Additionally, underlying metabolic disorders like Hypercalcemia can alter urine chemistry, creating an environment favorable to crystal aggregation.

Signs and Symptoms

Owners should be vigilant for signs of urinary distress. Common clinical indicators reported by the PetMD veterinary library include:

Frequent attempts to urinate with little output (stranguria)
Blood in the urine (hematuria)
Accidents in the house or litter box
Straining to urinate
Abdominal discomfort or pain

If the urinary tract becomes completely blocked, the animal may display lethargy, vomiting, and a refusal to eat. This is a medical emergency that requires immediate intervention.

Diagnosis

Diagnosing bladder stones typically begins with a physical examination, followed by imaging. As noted by the VCA Animal Hospitals, radiographs (X-rays) are usually the first line of defense to visualize stones, though some types, such as urate stones, may be radiolucent and invisible on standard X-rays. In these cases, an abdominal ultrasound provides a much clearer view of the bladder wall and contents. Urinalysis is also performed to check for the presence of bacteria, white blood cells, and crystals, which helps the veterinarian determine the composition of the stones.

Treatment and Management

Once a diagnosis is confirmed, the veterinary team prepares the patient for a cystotomy. The patient is placed under general anesthesia, often utilizing Propofol for induction and a maintenance gas such as Isoflurane or Sevoflurane. During the surgery, the surgeon makes an incision into the abdomen and then the bladder, removes the stones, and flushes the bladder to ensure no debris remains. The bladder is then closed with absorbable sutures.

In some instances, if an underlying metabolic issue is found, such as Hypocalcemia, the veterinarian may prescribe specialized supportive therapies or supplements like S-Adenosylmethionine (SAMe) to manage liver or systemic health post-surgery. It is vital to note that not all stones require surgery; some can be managed with therapeutic diets, though strict adherence is mandatory.

Recovery and Aftercare

Recovery generally spans 10 to 14 days. Post-operative care involves strict activity restriction, usually limited to short, leash-only walks to prevent the incision from opening. Owners must monitor the surgical site daily for redness, swelling, or discharge. Per Cornell University College of Veterinary Medicine, pain management is essential; pets will typically be sent home with non-steroidal anti-inflammatory drugs or other analgesics. It is also common for veterinarians to recommend Royal Canin Satiety Weight Management or other specialized urinary diets to prevent recurrence.

Cost Considerations

A cystotomy is a significant procedure, and costs vary based on geographic location, the size of the pet, and the complexity of the stone removal. According to CareCredit, the total cost often includes pre-anesthetic blood work, the surgery itself, hospitalization time, medications, and histopathology (analyzing the stone to determine its exact mineral makeup). Owners should request a detailed estimate from their primary care veterinarian or a boarded veterinary surgeon.

When to Contact a Vet

Owners must contact a veterinarian immediately if they observe their pet straining to urinate without producing urine. This often indicates a life-threatening urethral obstruction. Furthermore, if you notice persistent blood in the urine, lethargy, or signs of abdominal pain after the surgery, prompt medical follow-up is necessary to ensure the healing process is progressing correctly.

Cystotomy: A Complete Guide to Bladder Stone Removal for Pets in Dogs & Cats