The incidence of inadvertent perioperative hypothermia

The incidence of inadvertent perioperative hypothermia in patients undergoing general anesthesia and an examination of risk factors

Status

Completed

Phases

Unknown

Study type

Observational

Source

ANZCTR

Registry ID

ACTRN12617001492347

Enrollment

2015

Registered

2017-10-23

Start date

2016-02-01

Completion date

2016-08-01

Last updated

2017-10-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

We determined the incidence of unintended perioperative hypothermia in patients undergoing general anesthesia and examined risk factors. 2015 patients were studied and the incidence of perioperative hypothermia was 78.6%. There was a statistically significant difference between the patients with and without hypothermia in terms of age and age group, body mass index (BMI), ASA classification and chronic disease status (p <0,05). The age and BMI of hypothermic patients were significantly higher than those without hypothermia. Patients with hypothermia who were older than 65 years, those with a BMI greater than 25 kg / m2 and any chronic disease were significantly higher than those without hypothermia. Patients with ASA-I had a significantly lower percentage of hypothermic patients. Percentage of those with grade 3 or 4 surgery, patients with endoscopic surgery, duration of anesthesia over 2 hours, infusion or irrigation amount greater than 1000 ml were significantly higher than those without hypothermia.

Interventions

The incidence of inadvertent perioperative hypothermia in patients undergoing general anesthesia. The duration of observation: from before patients entered the operating room to 15 minutes after patients were transfered to post anesthesia care unit.

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Healthy volunteers

Inclusion criteria

Patients undergoing general anesthesia undergoing elective surgery which expected to last longer than 30 minutes of surgical intervention. The patients agreed to participate in the study and signed the consent form.

Exclusion criteria

Patients on emergency operations, Patients undergoing open heart surgery with routine temperature monitoring, Patients with central fever due to cerebral trauma-epilepsy or acute hydrocephalus etc., Patients with thermoregulatory abnormality (such as malignant hyperthermia, neuroleptic malignant syndrome etc.), Patients whose preoperative temperature measured from tympanic membrane below 36 ° C and above 37.8 ° C, Patients with thyroid disorders, Patients with tympanic membranous pathology, ASA physical status score IV-V patients, Patients who will be anesthetized except for inhalation anesthesia such as TIVA

Outcome results