Immune-Mediated Haemolytic Anaemia in Dogs: Emergency Welfare

Immune-mediated haemolytic anaemia (IMHA) is a life-threatening emergency in dogs where the immune system destroys red blood cells, causing severe anaemia requiring intensive care.

Key Facts

IMHA is more common in certain breeds including Cocker Spaniels, Irish Setters, and Old English Sheepdogs
It can be primary (idiopathic) or secondary to drugs, infections, or neoplasia
Affected dogs show pale or yellow gums, weakness, rapid breathing, and collapse
Blood transfusion may be needed as a life-saving bridge while immunosuppressive treatment takes effect
Relapse occurs in approximately 25% of dogs that achieve remission

Welfare Considerations

IMHA causes acute and severe welfare harm from profound anaemia and its consequences including hypoxia, weakness, and respiratory distress. Dogs with IMHA are critically ill and require intensive monitoring and treatment. Blood transfusion, while life-saving, involves donor welfare considerations and should come from ethically managed donor programmes. The anxiety of hospitalisation adds to welfare burden. Immunosuppressive treatment reduces the self-attack but increases infection risk during the treatment period. Owners of recovered dogs must monitor carefully for relapse, which can occur suddenly and requires immediate intervention.

What You Can Do

Seek emergency veterinary care immediately for any dog showing sudden severe weakness or pale gums
Be prepared for intensive hospitalisation and blood transfusion as part of initial management
Follow immunosuppressive treatment protocols precisely and attend all monitoring appointments
Learn to recognise relapse signs and maintain access to emergency veterinary care for recovered dogs