TL;DR: Vomiting combined with frequent urination attempts is a high-priority veterinary emergency that may indicate a life-threatening urinary obstruction or kidney failure; seek immediate veterinary care.
What symptoms should I look for if my dog is vomiting and straining to urinate?
When a dog experiences both vomiting and frequent attempts to urinate, it indicates a complex medical issue involving both the gastrointestinal and urinary tracts. Potential causes include:
- Severe urinary tract infections
- Bladder stones
- Acute kidney failure
- Metabolic imbalances
How urgent is it if my dog is vomiting and straining to urinate?
- High Priority: This combination is considered a high-priority veterinary emergency.
- Risk of Obstruction: Straining to urinate (stranguria) alongside vomiting may indicate a life-threatening urinary obstruction or a systemic infection.
- Rapid Health Decline: Obstructions prevent the body from clearing toxins, which can be fatal.
- Immediate Action Required: Do not wait for symptoms to resolve; contact an emergency veterinarian immediately.
Why should I take a photo of my dog's urine or vomit for the vet?
If it is safe to do so, taking a photo of your dog's urine or vomit can be incredibly helpful for the veterinary team by providing the following information:
- Urine details: Visual evidence of blood, cloudiness, or unusual color.
- Vomit details: Identification of bile, blood, or swallowed foreign objects.
- Triage efficiency: Allows the staff to assess the severity of the situation before you even arrive at the clinic.
Clinical Context (Merck Veterinary Manual)
In dogs presenting with vomiting and frequent attempts to urinate, a thorough history should be obtained, specifically regarding potential access to foreign objects, toxins, or nephrotoxins, recent episodes of hypotension or shock, and ingestion of grapes or raisins. Physical examination should assess for dehydration and abdominal pain, particularly upon palpation of the kidneys. Diagnostic evaluation should include a complete blood count, serum biochemical profile, and urinalysis, with consideration for further clinicopathologic testing and diagnostic imaging if initial symptomatic treatment is ineffective after 2 days, or if hematemesis, melena, systemic illness, or abdominal palpation abnormalities are noted. Urinalysis findings suggestive of acute kidney injury include poorly concentrated urine (specific gravity 1.007-1.030) despite dehydration or azotemia, and marked cylindruria. If grape or raisin ingestion is suspected, prompt decontamination via emesis induction (with 3% hydrogen peroxide at 2 mL/kg, not exceeding 45 mL) followed by activated charcoal is recommended, alongside aggressive fluid diuresis for a minimum of 48 hours, especially in cases with spontaneous vomiting or diarrhea within 12 hours of ingestion.
Chapter: Gastroenterology, Toxicology, Emergency
Source: The Merck Veterinary Manual, 11th Edition (Page 387)