NAVLE Integumentary

Canine Burns Study Guide

Burns are painful injuries involving partial or complete skin damage caused by heat (thermal burns), chemicals, electricity, friction, cold, or radiation.

Overview and Clinical Importance

Burns are painful injuries involving partial or complete skin damage caused by heat (thermal burns), chemicals, electricity, friction, cold, or radiation. While burns are relatively uncommon in dogs compared to other traumatic injuries, they can be serious and even life-threatening when they occur. Burns represent a significant emergency medicine topic on the NAVLE due to their complex pathophysiology, need for immediate intervention, and potential for systemic complications.

Thermal burns are the most common type encountered in veterinary practice, often resulting from domestic accidents (scalding liquids, contact with hot surfaces, house fires), inappropriate use of heating pads during anesthesia, or hot dryer injuries at grooming facilities.

Burn Type Causes and Characteristics
Thermal Burns Most common type. Caused by flames, hot liquids (scalds), steam, hot surfaces, or heating devices. Includes scalds (boiling water, hot oil), contact burns (heating pads, dryers), and flame burns (house fires). Severity depends on temperature and duration of contact.
Chemical Burns Caused by acids, alkalis (drain cleaners, lye), or other caustic substances. Alkali burns penetrate deeper than acid burns. Can cause systemic illness if ingested. Require immediate copious water lavage.
Electrical Burns Most common from chewing on electrical cords (especially puppies). Can cause tissue charring at contact site, severe internal injuries to heart and lungs. May result in non-cardiogenic pulmonary edema (NCPE) with delayed onset up to 36 hours.
Friction Burns Also known as rope burns, carpet burns, or road rash. Occur when skin is abraded by mechanical contact with hard surfaces. Combination of abrasion and heat burn.
Cold Burns (Frostbite) Caused by severe or prolonged cold exposure. Ice crystals form causing cell damage and necrosis. Extremities (ears, tail, digits) most susceptible.

Burn Classification

Classification by Etiology

High-YieldOn NAVLE, electrical cord bite injuries in puppies are frequently tested. Remember that clinical signs may be delayed up to 36 hours, and non-cardiogenic pulmonary edema is a major complication. Always recommend monitoring even if patient appears initially stable.

Classification by Depth

Burn depth is classified according to the layers of skin affected. In veterinary medicine, the terminology has evolved from the classic human degree system to a more descriptive system based on tissue layers affected.

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