Hematemesis (Vomiting Blood) in Dogs

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Hematemesis (Vomiting Blood) in Dogs

By: Dr. Bari Spielman

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Section: Veterinary Care In-depth

Diagnosis In-depth

Obtaining a complete medical history and performing a thorough physical examination are necessary in order to create an appropriate diagnostic plan for the patient with hematemesis. A history of recent toxin exposure or administration of certain medications may be of paramount importance. Your veterinarian may also recommend the following tests:

A complete blood count (CBC) evaluates the presence of infection, inflammation, and anemia.

A biochemical profile helps rule out metabolic causes of hematemesis. It assesses the status of the kidneys, liver, electrolytes, blood proteins, and blood sugar.

A urinalysis helps evaluate the kidneys and the hydration status of the patient. Additionally, the presence of blood in the urine may help support a diagnosis of a coagulopathy.

A coagulation profile is performed on many patients with hematemesis.

Such a profile generally includes various clotting tests and a platelet count.

Abdominal radiographs (X-rays) evaluate the abdominal organs, and may detect the presence of a foreign body, tumor, or chips containing lead.

Thoracic radiographs evaluate for the presence of fluid or blood in the lungs or chest cavity, the spread of cancer (metastasis), and the presence of esophageal diseases.

Multiple fecal examinations for parasites and occult blood are important screening tests. Parasites are more likely a cause of hematemesis in the young puppy or kitten than in the adult dog or cat.

Your veterinarian may recommend additional tests to ensure optimal medical care. These are selected on a case-by-case basis:

An ACTH stimulation test to rule out hypoadrenocorticism (Addison's disease)

Bile acids to evaluate liver function

Measurement of blood lead level

Measurement of fasting serum gastrin level, the hormone responsible for increasing gastric acid production

An abdominal ultrasound to evaluate the size, shape and texture of abdominal organs and help assess for the presence of tumors

An upper gastrointestinal (GI) barium series

Upper GI endoscopy, which involves passing a flexible viewing scope into the esophagus, stomach and duodenum

An exploratory laparotomy, especially if the cause of the hematemesis remains elusive

Therapy In-depth

Treatment of severe clinical signs is necessary while diagnostic testing is underway. The following nonspecific (symptomatic) treatments may be applicable to some pets with hematemesis. These treatments may reduce the severity of symptoms or provide temporary relief. Nonspecific therapy is not a substitute for definitive treatment of the underlying disease responsible for your pet's condition.

Withholding food and water for 12 - 36 hours allows the GI tract to rest and is important when treating the patient with hematemesis. Complete dietary restriction allows the lining of the GI tract to heal. Gradual reintroduction of small amounts of bland food is instituted after the fast. Once all vomiting and hematemesis have resolved, the original diet may be slowly reintroduced. If at any point clinical signs recur, discontinue all oral food and water and contact your veterinarian.

Fluid and electrolyte therapy may be necessary and is directed toward correcting dehydration, acid-base, and electrolyte abnormalities. Occasionally, subcutaneous (under the skin) administration may be adequate, and may be performed on an outpatient basis. In more severe cases, intravenous administration is indicated and necessitates hospitalization.

Blood transfusions may be indicated if your pet is anemic from continued blood loss and hematemesis.

Drugs that stop vomiting (antiemetic) are used with caution. It is best to identify and treat the underlying cause of hematemesis, although in selected cases these medications may be recommended.

Drugs that decrease or inhibit acid production by the stomach such as Tagamet® (cimetidine), Pepcid® (famotidine), Zantac® (ranitidine), and Prilosec® (omeprazole) may encourage and expedite the resolution of hematemesis, especially if it is related to gastrointestinal ulcers.

Medications that protect or sooth the lining of the esophagus, such as sucralfate (Carafate®) may be helpful.

Antibiotics are given for bacterial infections.

Prostaglandin drugs, such as misoprostol (Cytotec®) may help counteract the ulcerogenic effects of nonsteroidal anti-inflammatory drugs (NSAIDs).

In some cases, surgical intervention is recommended, especially in those cases where hemorrhage is uncontrolled, a bleeding ulcer has perforated the gastrointestinal tract, or a bleeding tumor is present.

Follow-up Care

Optimal treatment for your pet requires a combination of home and professional veterinary care. Follow-up evaluations are critical, especially if your pet does not rapidly improve.

Administer all prescribed medications as directed and alert your veterinarian if you are experiencing problems treating your pet. Also, discontinue or avoid any medication or substance that may be irritating to the stomach lining, especially corticosteroids and NSAIDs. Return to your veterinarian for follow-up testing as directed.

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