A Deep Dive into Canine Parvoviral Enteritis
Speaker: Michael Lappin
Reviewed by: Dr Philip Judge
Event Name: WSAVA World Congress 2024
Key Takeaways
Top Tips
Key Takeaways
- Diagnosis and Testing
- False Negatives: Parvovirus tests can yield false negatives if the animal is not shedding the virus or if testing is performed too late. Always consider clinical signs alongside test results.
- Concurrent Risks: Puppies at risk for parvovirus enteritis are also susceptible to intussusception and foreign bodies. Early imaging is recommended to rule out these conditions.
- Monitoring During Hospitalization
- Intussusception Vigilance: Even improving parvovirus patients can develop intussusception. Sudden vomiting in a recovering patient warrants immediate abdominal evaluation.
- Gastrointestinal Obstructions: Regularly assess for signs of GI obstructions, as puppies may ingest foreign objects.
- Treatment Strategies
- Supportive Care:
- Fluid Therapy: Use isotonic balanced crystalloid solutions to treat shock and rehydrate.
- Antiemetics: Administer medications like metoclopramide, ondansetron, or maropitant citrate to control nausea and vomiting. Multiple agents may be used concurrently.
- Antibiotic Use:
- High-Risk Patients: Use antibiotics due to the risk of sepsis and bacteremia. Cefotaxime is preferred for broader gram-negative coverage.
- Alternative Regimens: Enrofloxacin combined with ampicillin or metronidazole can be used cautiously, considering potential effects on young dogs.
- Non-Septic Cases: A first-generation cephalosporin may suffice for patients without clinical signs of sepsis.
- Nutritional Support:
- Early Feeding: Begin micro-enteral nutrition with glucose and electrolytes within 12 hrs of hospitalisation.Â
- Nasogastric Tube: Place a nasogastric feeding tube to decompress the stomach and to facilitate early nutritional support with micro-enteral and elemental or hydrolyzed diets.
- Avoid Force-Feeding: Do not force-feed to prevent food aversions and stress.
- Plasma Transfusions:
- Early Administration: Consider giving fresh frozen plasma transfusion early to increase serum albumin and provide passive immunity.
- Benefits: Early intervention may be more effective before severe protein loss occurs.
- Adjunct Therapies:
- Interferon: May be beneficial but is expensive and not universally available.
- Monoclonal Antibodies: Can reduce severity and improve survival but may be cost-prohibitive.
- Fecal Transplantation: Potentially aids in restoring gut microbiome in persistent diarrhea cases.Use in healthy recovering patients
- Probiotics: Useful during recovery to re-establish healthy gut flora once the patient is eating and diarrhea has ceased.
- Supportive Care:
- Outpatient Management Options
- When Hospitalization Isn’t Feasible: For clients unable to afford inpatient care, an outpatient protocol can be considered.
- Treatment Components: Long-acting antibiotic (e.g., cefovecin), subcutaneous fluids, and maropitant.
- Efficacy: Studies show about an 82% survival rate with this approach.
- Limitations: Not suitable for all cases; close monitoring remains crucial.
- When Hospitalization Isn’t Feasible: For clients unable to afford inpatient care, an outpatient protocol can be considered.
- General Recommendations
- Early Detection: Prompt recognition and treatment of parvovirus enteritis improve outcomes.
- Holistic Monitoring: Always be vigilant for secondary complications such as sepsis, GI obstructions, or intussusception.
- Client Communication: Discuss all available treatment options, including costs and prognosis, to help clients make informed decisions.
- Avoid Unnecessary Interventions: Granulocyte colony-stimulating factors are not beneficial and should be avoided.
- Conclusion and Continuing Education
- Stay Informed: Keep up with the latest research and treatment protocols to provide the best patient care.
- Collaborate and Share Knowledge: Engage in professional discussions and conferences to enhance understanding and application of veterinary advancements.
Top Tips
- Comprehensive Assessment: Always rule out other potential issues like intussusception or foreign bodies in parvovirus-suspected puppies.
- Fluid therapy: balanced isotonic crystalloids are used to treat shock, rehydrate and provide for maintenance. Early plasma transfusion may benefit some patients, and may provide passive immunotherapy.
- Tailored Antibiotic Therapy: Choose antibiotics based on the patient’s clinical status and risk factors for sepsis etc.
- Early Nutritional Support: Initiate feeding as soon as feasible to support recovery, using appropriate methods to prevent complications.
- Consider Financial Constraints: Be prepared with alternative treatment plans for clients with limited resources to improve patient survival chances.
- Monitor for Complications: Keep a close eye on hospitalized patients for any sudden changes that may indicate new issues.