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When bladder stones are discovered in a cat, the guardian's most urgent concern is "do we need immediate surgery, or can we just change food?" To put it simply, treatment direction cannot be determined without first confirming the stone composition, size, and obstruction status. This article guides you step-by-step through treatment principles by composition, emergency judgment criteria, and recurrence management.
If cat bladder stones are discovered in Busan — Medication or surgery, stone composition comes first
The treatment direction for feline bladder stones cannot be decided based solely on "stones are present." According to reporting by Health Gyeongyang, bladder stones in companion animals are typically struvite and calcium oxalate, and the cause and management methods differ fundamentally depending on which composition it is. Struvite stones can be attempted for dissolution with prescription diets and medications under certain conditions, but calcium oxalate stones do not dissolve with any medication or dietary therapy, making surgical removal the standard.
What is important is that arbitrary dietary therapy alone should not be pursued when composition is unconfirmed. According to the same source, if stones are above a certain size or numerous, while buying time with medication, bladder mucosal damage, bacterial infection, and chronification of cystitis can progress, and often result in emergency surgery conversion. Accurate diagnosis is the beginning of the fastest treatment.
Types of feline bladder stones and treatment principles — Struvite vs. Calcium oxalate
The two main types of companion cat bladder stones have fundamentally different treatment pathways. The key differences are summarized in the table below.
| Classification | Struvite | Calcium oxalate |
|---|---|---|
| Formation environment | Alkaline urine, infectious urine | Acidic urine, metabolic abnormality |
| Medication dissolution possible | Conditional possible (early·small) | Not possible |
| Medical treatment | Prescription diet (urinary) + urine acidifying medication | Not applicable |
| Surgical treatment | Cystotomy if medical therapy fails | Cystotomy is standard |
| Treatment response judgment | Size change confirmation within 4 weeks | Surgery review immediately upon diagnosis |
| Recurrence risk | Present (diet·infection management essential) | Present (metabolic management essential) |
According to related clinical data, struvite stones may not be accurately confirmed by urinalysis alone, and medical therapy is not always successful. Health Gyeongyang advises that if there is no change in stone size within 4 weeks of treatment initiation, cystotomy should be actively considered. On the other hand, according to Medical World News, calcium oxalate stones do not dissolve with medication and surgical removal is standard, with cystotomy known as the most reliable method for stone treatment. If stones are large or numerous, regardless of the medical approach, surgical removal should be discussed promptly.
Results may vary depending on individual/individual circumstances.
24H UN animal medical center kidney and urology treatment approach in Busan — From diagnosis to treatment planning
Understanding the course of treatment after stones are discovered reduces guardian anxiety. For establishing a safe treatment plan, it is important to evaluate not only stone composition, location, and size, but also kidney function status. According to related clinical data, in cases with obstruction or severe hematuria, blood tests (CBC, serum chemistry) should confirm anemia and inflammation status, and imaging should simultaneously determine whether stones are in the kidney, ureter, bladder, or urethra and obstruction possibility.
The 24H UN animal medical center Kidney Center evaluates stone composition and kidney status through digital X-ray, precision ultrasound, and blood tests (including SDMA), then establishes individual treatment plans through multidisciplinary collaboration of medical personnel in internal medicine and surgery.
The treatment flow after diagnosis is as follows.
✓ Digital X-ray confirms stone location, number, and size primarily
✓ Precision ultrasound evaluates bladder wall status, ureter, and concurrent kidney abnormalities
✓ Blood tests (BUN, creatinine, SDMA) confirm whether kidney function is compromised
✓ Urinalysis (urine specific gravity, pH, bacterial culture) infers infection and stone composition
✓ Medical and surgical collaboration determines treatment direction (dissolution attempt vs. surgery)
✓ Regular ultrasound follow-up after treatment initiation monitors stone size changes
✓ Post-stone removal composition analysis referral and establishment of recurrence prevention diet and medication plan
Health Gyeongyang also emphasizes from their data that after stone removal, composition analysis must be referred to and corresponding diet and medication management continued to reduce recurrence. Since cats can experience rapid kidney function decline, communication-centered treatment that adequately shares treatment plans step-by-step with guardians is particularly important.
Is my cat in an emergency right now or not? How do I judge?
When a guardian learns stones exist, the first thing they must judge is whether the situation is currently an emergency. Check the checklist below.
✓ The cat has not urinated at all for 12 hours or longer
✓ Strains in the litter box but urine does not come out or only drops fall
✓ Repeats sitting in the litter box crying or repositioning and getting up
✓ Shows pain response when touching the abdomen with hand (avoidance, vocalization, rigidity)
✓ Lacks energy, decreased appetite, and is vomiting
✓ Blood in urine is clearly visible
If any of the above items apply, it should be judged as an emergency requiring immediate visit.
According to Medical World News data, if urethral obstruction occurs, urine in the bladder refluxes and can progress to acute renal failure, and resolving urinary obstruction within 48 hours is standard. According to related clinical data, if obstruction continues, kidney value elevation, hyperkalemia, bradycardia and arrhythmia, and in severe cases cardiac arrest can result. This is a dangerous situation.
Particularly, male cats have anatomically very narrow urethral diameter, and the moment small bladder stones move into the urethra, immediate obstruction can occur. Health Gyeongyang also specifies that male dogs and cats can have shrunken stones move into the urethra and cause obstruction. This is why small stone size cannot be reassuring. Symptoms can change rapidly even within a day, so careful observation of urination frequency and urine volume is important.
Guardians from throughout Busan, including Namgu Daeyeon-dong cat urology care, Suyeong-gu cat bladder stones, and Haeundae cat ureterolithiasis, are visiting.
The time spent waiting without knowing stone composition is most dangerous for your cat
24H UN animal medical center in Daeyeon-dong, Namgu, Busan operates 365 days, 24 hours year-round, so you can visit without delay whenever your cat develops urology symptoms, day or night.
The very time spent in limbo without determining treatment direction increases risk of bladder mucosal damage, bacterial infection, and emergency obstruction. According to Health Gyeongyang data, bladder stone surgery, when conducted planfully when systemic condition is favorable, shows high predictability and fast recovery, and most cases restore normal urination within a day or two post-surgery. Conversely, surgery after neglect leading to emergency situations increases risk due to systemic condition deterioration.
Bladder stones are a disease with high recurrence rate. After stone removal, composition analysis, prescription diet adjustment, and regular ultrasound follow-up are the keys to long-term management. Receiving diagnosis quickly is the safest choice for your cat. If stones are suspected, even with mild symptoms, we recommend receiving accurate testing first.
What guardians must check first after discovering bladder stones
Q1. Stones were discovered—do we need surgery immediately, or can we observe the situation?
It depends on the stone composition, size, and current obstruction status. If there is no obstruction and struvite is suspected, dissolution can be attempted with prescription diet. However, if the cat cannot urinate at all or shows pain symptoms, immediate visit is necessary, and observing without composition confirmation can lead to condition deterioration. Results may vary depending on individual/individual circumstances.
Q2. It's said to be struvite stones—can they really dissolve if we just feed prescription diet?
Small early-stage struvite stones can be attempted for dissolution with prescription diet and urine acidifying medication. However, composition may not be accurately confirmed by urinalysis alone, and if there is no size change within 4 weeks, surgery should be considered. With male cats, even small stones carry obstruction risk requiring extra caution.
Q3. I heard stones can form again after surgery—what should I do to lower recurrence?
Bladder stones have high recurrence rate. Stones removed by surgery must definitely undergo composition analysis to identify the cause, and corresponding prescription diet and medication management must be maintained long-term. Adequate water intake and regular ultrasound follow-up examination are core to recurrence prevention.
Q4. My cat is male and stones are small—is it true the urethra can still be blocked?
Yes, it is true. Male cats have anatomically very narrow urethral diameter, and if bladder stones shrink and move toward the urethra, immediate obstruction can occur. Obstruction quickly progresses to acute renal failure and hyperkalemia—an emergency situation. If urine output decreases or the cat shows pain during urination, please visit immediately.
Results may vary depending on individual/individual circumstances