Canine environmental hyperthermia: a case series

Stern, Adam W.

doi:10.1292/jvms.18-0586

Cited by 3 publications

(4 citation statements)

References 8 publications

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“…As in humans, canine heat stroke occurs when an individual's heat dissipation mechanisms are overwhelmed (13,14). Risk factors that lower the threshold for heat stroke can be individual or environmental and include body condition score, breed, coat type, respiratory capacity, fitness level, hydration status, ambient temperature, and relative humidity (13).…”

Section: Introductionmentioning

confidence: 99%

Environmental Heat Exposure Among Pet Dogs in Rural and Urban Settings in the Southern United States

et al. 2021

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With advancing global climate change, heat-related illnesses and injuries are anticipated to become more prevalent for humans and other species. Canine hyperthermia is already considered an important seasonal emergency. Studies have been performed on the risk factors for heat stroke in canine athletes and military working dogs; however there is limited knowledge on environmental risk factors for the average pet dog. This observational study explores variation in individually experienced environmental temperatures of pet dogs (N = 30) in rural and urban environments in central Alabama. Temperature data from dogs and their owners was collected using wearable personal thermometers. Demographic data on the dogs was collected using a brief survey instrument completed by their owners. Dogs included in the study varied in signalment, activity level, and home environment. Linear mixed effects regression models were used to analyze repeated measure temperature and heat index values from canine thermometers to explore the effect of environmental factors on the overall heat exposure risk of canine pets. Specifically, the heat exposures of dogs were modeled considering their owner's experienced temperatures, as well as neighborhood and local weather station measurements, to identify factors that contribute to the heat exposure of individual dogs, and therefore potentially contribute to heat stress in the average pet dog. Results show hourly averaged temperatures for dogs followed a diurnal pattern consistent with both owner and ambient temperature measurements, except for indoor dogs whose recordings remained stable throughout the day. Heat index calculations showed that owners, in general, had more hours categorized into the National Weather Station safe category compared to their dogs, and that indoor dogs had a greater proportion of hours categorized as safe compared to outdoor dogs. Our results suggest that the risk of the average pet dog to high environmental heat exposure may be greater than traditional measures indicate, emphasizing that more localized considerations of temperature are important when assessing a dog's environmental risk for heat-related injury or illness.

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Section: Introductionmentioning

confidence: 99%

Environmental Heat Exposure Among Pet Dogs in Rural and Urban Settings in the Southern United States

et al. 2021

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“…Hyperthermia is the result of heat being produced being in excess of heat loss via radiation, evaporation, convection and conduction 4 . Hyperthermia is categorised as having a core body temperature of >41°C and occurs when normal core temperature cannot be maintained via thermoregulatory response mechanisms 17 . Pyrexia is an increase in the thermoregulatory set point secondary to a systemic inflammatory response initiated by exogenous pyrogens such as infectious agents and immune complexes 18 .…”

Section: Discussionmentioning

confidence: 99%

“…In a case series detailing three dogs undergoing postmortem examination following heatstroke caused by exposure to high environmental temperatures, the most common pathological findings included congestion, haemorrhage and thrombosis of multiple organs. All three cases had died within 6 hours of initial exposure to extreme temperature, emphasising how important it is to rapidly control hyperthermia once identified to avoid these fatal changes occurring 17 …”

Section: Discussionmentioning

confidence: 99%

“…4 Hyperthermia is categorised as having a core body temperature of >41 • C and occurs when normal core temperature cannot be maintained via thermoregulatory response mechanisms. 17 Pyrexia is an increase in the thermoregulatory set point secondary to a systemic inflammatory response initiated by exogenous pyrogens such as infectious agents and immune complexes. 18 Pyrexia needs to be distinguished from hyperthermia.…”

Section: Differentiating Hyperthermia Versus Pyrexiamentioning

confidence: 99%

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Hyperthermia in a Chow Chow under general anaesthesia for magnetic resonance imaging

Jones

Robson

2022

Vet Record Case Reports

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A 5‐year 7‐month‐old, entire, male Chow Chow presented with paraparesis and ataxia due to a previously diagnosed T11–T12 spinal diverticulum. Due to the progression of clinical signs, magnetic resonance imaging was indicated to reassess the lesion. Preoperative rectal temperature was unable to be assessed due to temperament; however, it was likely the patient would be hyperthermic as it had been hyperthermic (40.6°C) under general anaesthesia 4 months earlier. Consequently, measures were taken to attempt to reduce body temperature before general anaesthesia. While under general anaesthesia for imaging, the patient was confirmed to be markedly hyperthermic. This report details the management of a patient with hyperthermia under general anaesthesia. The patient was gradually cooled before recovery from anaesthesia. Once recovered from anaesthesia and normothermic, the patient was discharged home the same day. Follow‐up confirmed no adverse effects.

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The importance of peri-anaesthetic temperature management: part 2

Kershaw

2023

The Veterinary Nurse

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When considering patient temperature management under anaesthesia, hyperthermia is a rare complication. Associated risk factors, management and prevention of hyperthermia are considered in this article to ensure that veterinary nurses feel confident in dealing with these cases and identifying atrisk patients. This article is the second in a series dedicated to exploring the importance of temperature monitoring and management during the anaesthetic period.

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Canine environmental hyperthermia: a case series

Cited by 3 publications

References 8 publications

Environmental Heat Exposure Among Pet Dogs in Rural and Urban Settings in the Southern United States

Environmental Heat Exposure Among Pet Dogs in Rural and Urban Settings in the Southern United States

Hyperthermia in a Chow Chow under general anaesthesia for magnetic resonance imaging

The importance of peri-anaesthetic temperature management: part 2

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