Shock article urges tailored, early intervention in small animals
Bottom line
Today’s Veterinary Practice has published a new peer-reviewed continuing education article, “Paws for a Moment: Recognizing and Treating Shock in Small Animals,” in its May/June 2026 issue. Written by Justin Heinz, DVM, DACVECC, the piece frames shock as a syndrome rather than a diagnosis and updates clinicians on a physiology-driven approach to recognition and treatment in dogs and cats. The article emphasizes the 4 principal shock categories — hypovolemic, cardiogenic, obstructive, and distributive — and highlights several practical shifts in bedside thinking: early changes in perfusion, mentation, shock index, and lactate may appear before hypotension; not all shock is fluid responsive; and feline patients often present differently, with bradycardia and hypothermia rather than the more classic canine pattern. (todaysveterinarypractice.com)
Why it matters: For veterinary professionals, the article is a reminder that rapid triage still hinges on pattern recognition, but treatment has to be tailored to mechanism. Heinz argues that aggressive fluids can be harmful if cardiogenic shock hasn’t been ruled out, while serial reassessment, lactate trending, and point-of-care ultrasound can help teams decide whether a patient is fluid responsive and when to pivot to decompression, inotropes, or vasopressors such as norepinephrine for distributive shock. That’s especially relevant for general practices and ER teams trying to stabilize first, then sort out whether they’re seeing hemorrhage, sepsis, tamponade, GDV, or occult heart disease. (todaysveterinarypractice.com)
What to watch: Expect this article to feed directly into CE discussions, triage training, and protocol reviews around shock assessment, feline recognition, and fluid-resuscitation decision-making. (todaysveterinarypractice.com)
Shock is one of the oldest emergencies in small animal medicine, but Today’s Veterinary Practice is making the case that clinicians need a more nuanced, less reflexive approach to it in 2026. In a new peer-reviewed CE article published May 1, 2026, Justin Heinz, DVM, DACVECC, describes shock as a dynamic failure of tissue perfusion that demands rapid recognition, repeated reassessment, and treatment matched to the underlying mechanism, not just the presenting vital signs. (todaysveterinarypractice.com)
That framing matters because the article pushes back on a long-standing habit in practice: equating shock with automatic fluid loading. Heinz divides shock into 4 principal categories — hypovolemic, cardiogenic, obstructive, and distributive — and stresses that while 3 of those forms are generally fluid tolerant, cardiogenic shock is not. In other words, the first task isn’t simply to give fluids, but to identify what’s impairing oxygen delivery and whether volume expansion will help, do nothing, or make the patient worse. (todaysveterinarypractice.com)
The article also reflects a broader ECC trend toward earlier, multimodal recognition. Heinz’s take-home points emphasize that subtle changes in perfusion parameters, mentation, shock index, and lactate can precede frank hypotension. He also highlights point-of-care ultrasonography, including caudal vena cava collapsibility, as a tool that can help predict fluid responsiveness in dogs when used in context. That lines up with wider emergency-care commentary pointing clinicians toward integrated assessment rather than reliance on any single marker. (todaysveterinarypractice.com)
One of the article’s most clinically useful sections may be its discussion of cats. Heinz underscores that cats in shock are “not small dogs,” noting that feline patients may show bradycardia and hypothermia even with mild to moderate shock, alongside weak pulses, pallor, obtundation, hypotension, and cold extremities. For frontline teams, that’s a practical warning: a cat that doesn’t fit the expected tachycardic shock picture may still be critically underperfused, and delayed recognition can narrow the window for intervention. (todaysveterinarypractice.com)
Treatment recommendations in the piece are similarly pragmatic. Once cardiogenic shock has been reasonably excluded, Heinz recommends an IV fluid bolus with response-based reassessment. Improvement suggests a hypovolemic component, lack of response raises suspicion for distributive shock, and worsening respiratory signs after fluids should push the clinician back toward cardiogenic disease or volume overload. For distributive shock, the article identifies norepinephrine as the current first-line vasopressor in veterinary medicine, citing survey data and evidence extrapolated from human sepsis guidance, while noting dopamine’s less favored position because of arrhythmia risk and less predictable hemodynamic effects. (todaysveterinarypractice.com)
There wasn’t much direct public reaction tied specifically to this article, but the surrounding ECC publishing landscape helps explain why this topic is getting renewed attention. Today’s Veterinary Practice has recently featured related content on sepsis, anaphylaxis, hemolytic crisis, and CPR updates, while newer ECC-focused educational outlets are also emphasizing first-hours recognition, fluid strategy by shock phenotype, and vasopressor timing. That suggests a wider professional shift toward more protocolized, evidence-aware stabilization pathways rather than one-size-fits-all resuscitation. (todaysveterinarypractice.com)
Why it matters: For veterinary professionals, this is less about a brand-new discovery than about consolidating where emergency thinking is headed. The message is that shock care now depends on identifying mechanism quickly, using serial data intelligently, and avoiding interventions that can backfire, especially in occult cardiogenic cases and in cats with atypical presentations. For general practices, urgent care teams, and ER hospitals, the article is likely to be most useful as a protocol-checking tool: Are triage teams watching for early perfusion changes before hypotension? Are they using lactate and POCUS as adjuncts rather than absolutes? Are they prepared to stop fluids and pivot when the patient declares a different shock phenotype? (todaysveterinarypractice.com)
What to watch: The next step is likely operational, not regulatory — more hospitals folding these concepts into triage checklists, CE, and shock algorithms, particularly around feline recognition, fluid responsiveness, and earlier vasopressor use in distributive shock. (todaysveterinarypractice.com)