Clinical topic

Emergency & Critical Care

Toxin ingestions, gastric dilatation-volvulus, the blocked cat, and recognizing and stabilizing shock.

Written for: General practitioners who see emergencies during office hours, ER teams, and the front-desk staff who triage by phone.

Emergencies do not wait for the specialty hospital. With emergency clinics at capacity in many markets, general practices are stabilizing more critical patients than they did a decade ago, and the first thirty minutes of a blocked cat, a bloated dog, or a toxin ingestion are often managed by whoever is in the building. This hub is a reference shelf for those first decisions.

The guides cover four situations that every small animal practice meets. The toxin guide is organized by the exposures that poison control centers report most often, and it summarizes what the Merck Veterinary Manual toxicology chapters and the published literature say about each: the mechanism, the onset of signs, and the decontamination and treatment approaches the sources describe. It is a companion to a poison control consultation and does not replace one. The gastric dilatation-volvulus guide covers recognition, the stabilization sequence the literature describes before surgery, and the prognostic indicators that have been studied, with each figure tied to the paper that reported it. The urethral obstruction guide addresses the hyperkalemic, azotemic cat, including the published work on outpatient and low-cost protocols. The shock guide sets out the classification of shock, the perfusion parameters used to recognize it, and what its sources say about fluid resuscitation.

Emergency medicine is a field where the evidence base is thinner than clinicians would like, and many widely used practices rest on small studies or expert consensus. The guides are explicit about that. When a number comes from a retrospective study of a few dozen patients, the page says so and names the limitation. When a manual chapter, review, or consensus document makes a recommendation, the page attributes it and, for clinical wording, quotes it.

Triage starts at the front desk, so parts of this hub are written for non-clinical staff: which phone descriptions the sources treat as true emergencies, and what information a poison control center will ask for. Managers will find material relevant to readiness, such as the equipment and drugs the guidelines assume a clinic has within reach. Doses are included only where a cited source states them, always with a prompt to check the current label or formulary and the individual patient, because in an emergency a misremembered number does the most harm.

Reference guides

Toxicology

The exposures seen most often, how the sources describe decontamination, and when to call poison control.

Surgical and urologic emergencies

Gastric dilatation-volvulus and feline urethral obstruction, from recognition through stabilization.

Resuscitation

Types of shock, perfusion assessment, and what the sources say about fluid resuscitation.

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