1 research outputs found
Retrospective study of the prevalence of postanesthtic hypotermia in dogs
The anaesthetic records of 1525 dogs were examined to determine the prevalence of
postanaesthetic hypothermia, its clinical predictors and consequences. Temperature was
recorded throughout the anaesthesia. At the end of the procedure, details coded in were:
hyperthermia (>39.50°C), normothermia (38.50°C–39.50°C), slight (38.49°C–36.50°C),
moderate (36.49°C–34.00°C) and severe hypothermia (<34.00°C). Statistical analysis
consisted of multiple regression to identify the factors that are associated with the
temperature at the end of the procedure. Before premedication, the temperature was
38.7±0.6°C (mean±sd). At 60, 120 and 180 minutes from induction, the temperature was
36.7±1.3°C, 36.1±1.4°C and 35.8±1.5°C, respectively. The prevalence of hypothermia
was: slight, 51.5 per cent (95 per cent CI 49.0 to 54.0 per cent); moderate, 29.3 per cent
(27.1–31.7 per cent) and severe: 2.8% (2.0–3.7%). The variables that associated with a
decrease in the temperature recorded at the end of the anaesthesia were: duration of the
preanesthetic time, duration of the anaesthesia, physical condition (ASA III and ASA IV dogs
showed lower temperatures than ASA I dogs), the reason for anaesthesia (anaesthesia
for diagnostic procedures or thoracic surgery reduce the temperature when compared
with minor procedures), and the recumbency during the procedure (sternal and dorsal
recumbencies showed lower temperatures than lateral recumbency). The temperature before
premedication and the body surface (BS) were associated with a higher temperature at the
end of the anaesthesia, and would be considered as protective factors.Ciencias Experimentale