A 3-year-old spayed female Australian Shepherd presents a...

☠️ Alright, let's get straight to it. A 3-year-old Australian Shepherd, 30 minutes post-ingestion of 300 mg/kg xylitol, already showing mild lethargy and a blood glucose of 60 mg/dL. This is a critical situation needing immediate and aggressive intervention. The dose is well above the hypoglycemic threshold (100 mg/kg) and warrants close monitoring for hepatotoxicity as well, though it's below the typical threshold for liver damage (>500 mg/kg).

Here are the crucial initial steps and monitoring parameters:

Immediate Decontamination (Emesis):

* Despite rapid absorption, 30 minutes post-ingestion still offers a window to remove some unabsorbed xylitol.
* Induce emesis using apomorphine: 0.03 mg/kg IV.
Crucial Note: Activated charcoal is ineffective* at adsorbing xylitol, so do not administer it.

Address Hypoglycemia Immediately:

* Your patient is already hypoglycemic (60 mg/dL). This needs to be corrected and prevented from recurring.
* Administer a dextrose bolus: 0.5-1 mL/kg of 50% dextrose, diluted 1:1 with 0.9% NaCl, given slowly intravenously.
* Immediately follow with a dextrose constant rate infusion (CRI): Start a 2.5-5% dextrose CRI in intravenous fluids (e.g., LRS or 0.9% NaCl) at a maintenance rate. The exact percentage and rate will be titrated based on serial blood glucose monitoring. The goal is to maintain euglycemia (80-120 mg/dL).

Intravenous Fluid Therapy:

* Continue IV fluids with the dextrose CRI to maintain hydration and support metabolic function.

Monitoring Parameters:

* Blood Glucose (BG): This is your primary monitoring parameter.
* Monitor every 1-2 hours for the first 12-24 hours. Xylitol causes a sustained insulin release, and hypoglycemia can persist or recur for many hours.
* Continue monitoring until the blood glucose is stable within the normal range without dextrose supplementation for at least 6-8 hours.
* Liver Enzymes (ALT, ALP, Bilirubin):
* Although the ingested dose (300 mg/kg) is below the typical hepatotoxic threshold, liver values should still be monitored as a precaution, especially given the rapid onset of hypoglycemia.
* Check baseline liver enzymes. Recheck at 24, 48, and 72 hours post-ingestion.
* Clinical Signs:
* Continuously monitor for worsening lethargy, weakness, ataxia, vomiting, diarrhea, tremors, or seizures (indicating severe hypoglycemia).
* Also watch for signs of developing liver dysfunction such as anorexia, jaundice, or coagulopathies.

Prognosis and Hospitalization:
With prompt decontamination and aggressive management of hypoglycemia, the prognosis for xylitol toxicosis is generally good if hepatotoxicity does not develop. This patient will require hospitalization for at least 12-24 hours for continuous glucose monitoring and IV dextrose support. Liver enzyme monitoring should extend for 72 hours.

Time is of the essence. Get that emetic in, start the dextrose, and set up your frequent BG monitoring schedule.