Correlation Between Core Temperature and Skin Temperature Measured by 3M SpotOn

Ajou University School of Medicine

Status: Enrolling

Conditions: General Anesthesia; Temperature

Treatments: Other: Esophagus temperature monitoring; Other: Spoton Temporal; Other: Spoton Carotid

Study type: Observational

Funder types: Other

Identifiers

NCT03745079

MED-OBS-18-350

Details and patient eligibility

About

Core temperature should be monitored under general anesthesia. Recently developed 3M Spoton skin temeprature which is applied on temporal artery is correlated with core temperature measure by esophageal prove in several studies. Conventional skin temperature over carotid artery is also correlated with core temperature in several studies. The purpose of this study is comparing 3 methods of temperature monitoring. First, conventional core temperature measure by esophageal stethoscope. Second, 3M Spoton applying on temporal artery. Third, 3M Spoton applying on carotid artery

Full description

Core temperature should be monitored under general anesthesia. Because patients are prone to hypothermia during surgery. Conventional core temperature is monitored at esophagus, rectum, nasopharynx. But some of them are invasive and impossible in sometimes. Recently developed 3M Spoton skin temeprature which is applied on temporal artery is correlated with core temperature measured by esophageal prove in several studies. Its mechanism is making zero heat flux on skin applied. But it also cannot apply in head or facial surgery. Other studies showed conventional skin temperature over carotid artery is also correlated with core temperature. The investigators hypothesized using Spoton on carotid artery could be alternative method measuring core temperature. The purpose of this study is comparing 3 methods of temperature monitoring. First, conventional core temperature measure by esophageal stethoscope. Second, 3M Spoton applying on temporal artery. Third, 3M Spoton applying on carotid artery

Enrollment: 80 estimated patients

Sex: All

Ages: 19 to 60 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Age 19~60 years old
• Who need surgery more than 2 hours under general anesthesia
• American Society of Anesthesiologists physical status 1 or 2

Exclusion criteria

• Body mass index < 35
• Head and neck surgery
• Patients with fever > 38'C
• History of malignant hyperthermia

Trial design

80 participants in 1 patient group

Group 1

Description:

Participants' temperature measured at 3 places at the same time * Esophagus * Skin near to temporal artery * Skin near to carotid artery

Treatment:

Other: Spoton Carotid

Other: Spoton Temporal

Other: Esophagus temperature monitoring