October 5, 2026
Canine Parvovirus, Puppy
Classic parvo in an unvaccinated puppy, inpatient vs. outpatient protocols.
The parvo protocol, inpatient, outpatient, and survival rates.
12 week old pit mix puppy, no vaccines, bloody diarrhea x1 day, vomiting, not eating. SNAP parvo positive. Already dehydrated, maybe 7-8%. Owner has very limited funds. Best protocol?
🚨PARVOVIRUS CONFIRMED, AGGRESSIVE SUPPORTIVE CARE — No antiviral exists, survival depends on supportive care. Inpatient survival 85–95%. Outpatient protocol is a valid option when funds are limited (survival 75–85% in studies).
Inpatient Protocol (Gold Standard)
- IV fluids: LRS bolus 20 mL/kg if shocky, then maintenance + deficit (~300 mL deficit + 130 mL/day for this puppy)
- Antiemetics: Maropitant 1 mg/kg IV/SQ q24h ± ondansetron 0.1–0.5 mg/kg q8–12h
- Antibiotics: Ampicillin 22 mg/kg IV q8h + enrofloxacin 5 mg/kg IV q24h (bacterial translocation coverage)
- Early nutrition within 12h + 2.5–5% dextrose in fluids. BG q4–6h, hypoglycemia kills puppies.
- Prognosis: 85–95% survival inpatient, ~10% untreated. Most deaths in first 48–72h. Stay 3–7 days.
⚠️ Isolation & Biosecurity
- Strict isolation, CPV survives months in environment. Bleach 1:32 is the only reliable disinfectant.
- Shedding continues 2–3 weeks post-recovery. No dog parks or unvaccinated dog contact for 4 weeks.
Your puppy has parvovirus, a serious infection attacking the intestines and immune system. With hospitalization, about 9 out of 10 puppies survive. Without treatment, survival is very low. We do have an outpatient option with good results if finances are a concern.
Sources
Owner can't afford hospitalization. Walk me through the outpatient protocol, the CSU one. What do I send home?
💊OUTPATIENT PARVO PROTOCOL (CSU-BASED) — Subcutaneous fluids, maropitant, antibiotics, and early feeding at home. Studies show 75–85% survival, a valid option when inpatient care isn't possible.
In-Clinic (Before Sending Home)
- SQ fluid bolus: Warm LRS 30–40 mL/kg divided 2–3 sites + Maropitant 1 mg/kg SQ
- Convenia 8 mg/kg SQ, 14-day antibiotic coverage in one injection
- Check BG (dextrose or Karo syrup if <80). Teach owner SQ fluids and syringe-feeding.
Home Protocol
- SQ fluids: LRS 30 mL/kg q12h until eating. Maropitant 2 mg/kg PO q24h ± ondansetron 0.5 mg/kg q12h.
- Feed early and often: Bland diet q4–6h even with diarrhea. Karo syrup on gums if weak (hypo rescue).
- Return daily × 3 days for assessment. Most turn corner day 3–5.
⚠️ Return Immediately If
- Non-responsive, extremely weak, or persistent vomiting despite maropitant
- Pale/white gums, cold extremities (septic shock) or worsening bloody diarrhea
- Owner unable to give SQ fluids or syringe-feed
Sources
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