Hyperkalemia in dogs and cats can be treated with a wide variety of methods in an emergency veterinary setting. These methods may include intravenous isotonic crystalloid fluid therapy, insulin with dextrose, sodium bicarbonate, adrenergic receptor agonists (e.g. albuterol or terbutaline) and, ultimately, treatment of the underlying condition (e.g. relief of the urethral obstruction).Continue reading “Dextrose:insulin ratio when treating hyperkalemia”
Fluid therapy is the most commonly used initial therapeutic intervention in treatment of shock states (e.g. in hypovolemic and distributive types of shock). The approach to fluid resuscitation evolved over the last few decades. For instance, we no longer start with a full “shock dose” of fluids (60-90 ml/kg), and instead, an incremental 10-20 ml/kg boluses are preferred with frequent reassessment of the end-goal perfusion parameters. The standard therapeutic targets include improving heart rate, pulse quality, capillary refill time (CRT), non-invasive or invasive blood pressure and mucous membrane color.
But, how reliable is this approach in assessment of fluid responsiveness? Today, I will explore available evidence and diagnostic tools that can be utilized in evaluation of fluid responsiveness in veterinary and human patients.Continue reading “Fluid responsiveness: is it that simple?”
Hypoadrenocorticism (i.e., Addison’s disease) is an important differential for hypercalcemia. The etiology of hypercalcemia in hypoadrenocorticism in dogs is unclear. Hall et. al (JVIM 2023) wanted to find out the prevalence and factors associated with hypercalcemia in this population of dogs by performing a multicenter retrospective observational study at the 4 UK referral hospitals. They analyzed data from 110 dogs and found that about 34.5% of the dogs with Addison’s had either total and/or ionized hypercalcemia. The odds of hypercalcemia were increased (P < .05) in dogs with classic Addison’s (deficient in both mineralo- and glucocorticoids), higher serum creatinine, and higher serum albumin. The odds of ionized hypercalcemia were increased (P < .05) with reduced serum potassium concentration and younger age.Continue reading “Hypercalcemia in dogs with Addison’s disease”
Lung and pleural space point-of-care ultrasound is usually performed in sternal recumbency unless a dog cannot tolerate this position. In this scenario, the patient can be positioned in right or left lateral recumbency to evaluate all lung fields. The Pleural and Lung Protocol (PLUS) is my preferred method to evaluate the pleural space and lung parenchyma (Boysen et al. 2022).Continue reading “Lung and Pleural Space Ultrasound”
If you are presented with an acutely vomiting canine or feline patient who happened to have a metabolic alkalosis on the blood gas analysis, an upper gastrointestinal (GI) obstruction should be suspected. Lozano et al. (Texas A&M University, JSAP 2023) recently published a study that looked at the prevalence of various acid-base and electrolyte disorders in this population of dogs. A total of 115 dogs were included in the study, with 22% of dogs showing either a simple metabolic alkalosis or a mixed metabolic alkalosis before surgery. While 37% of dogs had a normal acid–base status on presentation.Continue reading “Metabolic alkalosis in animals with upper GI obstruction”