Diabetic Ketoacidosis (DKA) Emergency

WeightQ&AMeongsiljang Veterinary Advisory Board

Diabetic ketoacidosis is an emergency condition in which ketones rapidly accumulate in the blood due to a lack of insulin. If your pet does not receive veterinary care within 24 hours, their life is at risk.

What is Diabetic Ketoacidosis?

A puppy that drinks a lot of water and has low energy

Diabetic ketoacidosis is a life-threatening metabolic emergency that occurs when severe insulin deficiency forces the body to burn fat for energy instead of glucose, causing acidic byproducts called ketones to rapidly accumulate in the blood. Alongside high blood sugar and elevated ketone levels, metabolic acidosis and dehydration progress simultaneously, resulting in a high mortality rate; therefore, starting treatment immediately is paramount. If your pet is drinking significantly more water than usual, appears lethargic, or breathes with an acetone (nail polish remover) odor, take them to an emergency veterinary clinic right away. Even if it seems like a simple worsening of diabetes, the concurrent deepening dehydration and acidosis make it dangerous to try managing this at home.

Why Does Ketoacidosis Occur?

When a diabetic pet misses an insulin dose or has underlying conditions like infections, pancreatitis, or Cushing’s syndrome, insulin effectiveness decreases, preventing cells from properly utilizing glucose. The body then breaks down fat for energy, releasing ketone bodies that cause the blood to become acidic. These concurrent conditions are significant triggers for ketoacidosis and must be identified and treated promptly. In some cases, pets may already be in ketoacidosis upon their first veterinary visit, even before a diabetes diagnosis is confirmed. Cats can also develop ketoacidosis secondary to diabetes, so it’s important to respond promptly to any changes in symptoms.

Comparison of Symptoms: General Diabetes vs. Ketoacidosis

Item	Simple diabetes	Ketoacidosis
Amount of water consumed	Slightly increased	Explosively increased
Energy level	Similar to usual	Severely lethargic
Appetite	Maintained	Rapidly decreased
Vomiting	None	Repeated vomiting
Breathing	Normal	Deep and rapid, acetone odor
Urgency	Manage on an outpatient basis	Immediate hospitalization and treatment

If two or more of the symptoms on the right are present, go to the hospital immediately

Symptom Checklist for Pet Owners

- Excessive thirst and urination: Your pet drinks significantly more water than usual and produces noticeably larger volumes of urine. - Loss of appetite: If your pet starts refusing food despite having diabetes, it is a dangerous warning sign. - Recurrent vomiting: Repeated vomiting can lead to rapid dehydration. - Acetone odor: Your pet’s breath may smell sweet, fruity, or like nail polish remover. - Hypothermia and lethargy: The tips of the ears and paws feel cold to the touch, and your pet becomes sluggish and unresponsive. - Deep, rapid breathing: Breathing becomes labored and deep as the body attempts to compensate for acidosis.

Checklist of Key Symptoms for Diabetic Ketoacidosis

Go to the Hospital Immediately, Even in the Early Morning, If You See These Signs

If your pet experiences repeated vomiting, becomes lethargic, shows rapid and deep breathing, or appears disoriented, seek immediate care at a 24-hour emergency veterinary hospital. Ketoacidosis requires simultaneous intravenous regulation of fluids, electrolytes, and insulin, making home management impossible. The longer treatment is delayed, the greater the risk of severe complications such as kidney failure and cerebral edema.

How Is It Treated at the Hospital?

Upon hospitalization, the first priority is to replenish lost fluids and electrolytes through intravenous therapy. Since potassium, phosphorus, and magnesium levels tend to drop during treatment, we closely monitor these values and supplement them as needed. Once dehydration is partially corrected, we administer a low dose of rapid-acting insulin continuously to gradually lower blood glucose and ketone levels. We avoid lowering blood sugar too quickly, as this can lead to cerebral edema; therefore, we carefully monitor blood glucose every 1 to 2 hours in the initial phase. Intensive inpatient care is required until acidosis, dehydration, and electrolyte imbalances are resolved and the pet's appetite returns.

A puppy hospitalized while receiving IV fluid therapy

How to Manage Care at Home After Discharge

After discharge, please follow a strict routine of feeding followed by an insulin injection at the scheduled time. Skipping meals can lead to hypoglycemia, so contact your veterinarian immediately if your pet leaves more than half of their food uneaten. Monitor blood glucose at home two to three times a week using a glucometer, and schedule a recheck every month to adjust the dosage as needed. Consistently feed a low-glycemic, high-fiber diet, and consult your veterinarian before offering treats or fruits, as they can cause blood sugar spikes.

Three Key Strategies to Prevent Relapse

First, store insulin as directed and use it within its expiration date. Improper storage reduces its effectiveness, leading to unstable blood sugar control and an increased risk of relapse. Second, hidden infections such as urinary tract infections or periodontal disease, as well as other concurrent conditions, can disrupt blood sugar levels and trigger ketoacidosis, so don’t skip regular check-ups. Third, hormones or underlying factors that increase insulin resistance may be present, so always consult your veterinarian before deciding on management strategies, including whether to spay or neuter.

Reviewed by a veterinarian

Dr. Tony — Punnawat Phongkittirak

Veterinarian

A veterinarian who majored in veterinary medicine at Khon Kaen University, Thailand, and completed the IVSA program at North Carolina State University in the United States. Drawing on clinical experience at animal hospitals, he works in the pet healthcare field and is dedicated to building a digital care environment that connects pet parents with veterinarians.

Frequently Asked Questions

If I check for ketones at home using test strips, can I avoid a vet visit?

Not exactly. Urine ketone test strips are designed for early detection. If the result is positive, you should seek veterinary care within the same day, even if the symptoms appear mild. A diagnosis of ketoacidosis requires evaluating blood pH and electrolyte levels.

How much should I expect to pay for treatment?

Costs can vary widely depending on the length of hospitalization, the presence of complications, and your location. For an accurate estimate, consult your attending veterinary clinic, and if you have pet insurance, be sure to review your coverage details in advance.

Can cats develop ketoacidosis?

Yes, cats can also develop diabetic ketoacidosis. If an infection or another concurrent illness is present, the condition can worsen, so it’s important to stay vigilant and respond promptly to any changes in water intake, appetite, or energy levels.

I missed one insulin dose. Is that okay?

A single missed dose won’t immediately lead to ketoacidosis, but repeated omissions or a concurrent infection can be dangerous. Please administer the usual dose at the next scheduled meal and monitor your pet’s appetite, water intake, and any vomiting over the next 24 hours.

Does diabetes persist even after recovery?

Most dogs with diabetes require lifelong insulin therapy. In contrast, some cats can become independent of insulin if treated early. Consistent blood glucose management is key to preventing relapse.