COLLAPSE / FAINTING IN DOGS/CATS
WHAT THIS SYMPTOM USUALLY MEANS
Collapse is a sudden loss of strength or consciousness. It is always an emergency. Causes include cardiac disease, internal bleeding, arrhythmias, neurological events, and severe shock.
MOST COMMON CAUSES
MILD (RARE)
• Brief vasovagal syncopal episode
MEDICAL CAUSES
• Heart arrhythmias
• Severe anemia
• Low blood sugar
• Internal bleeding
• Pain-induced collapse
EMERGENCY CAUSES (HIGH CONCERN)
• Heart failure
• GDV (bloat)
• Trauma
• Massive internal bleeding
• Heatstroke
• Toxins (xylitol, rodenticide, chocolate)
RED FLAGS: WHEN THIS IS AN EMERGENCY
• Blue, pale, or gray gums
• Rapid breathing
• Seizure-like activity
• Repeated collapse
If you’re unsure, treat it as urgent.
AT-HOME CARE YOU CAN START NOW
• Keep pet flat and calm
• Keep airway open
• Transport immediately
WHAT A VETERINARIAN WILL CHECK
• ECG
• Blood glucose
• Blood count
• X-rays/ultrasound
• Oxygen support
• IV fluids
MOST LIKELY DIAGNOSES (BASED ON 40 YEARS OF CASES)
• Heart arrhythmia
• Internal bleeding
• Severe anemia