Optimal Depth for Esophageal Stethoscope

Chosun University Hospital

Status: Active, not recruiting

Conditions: Surgery

Treatments: Other: Anatomical landmark; Device: Esophageal temperature monitoring according to the depth

Study type: Interventional

Funder types: Other

Identifiers

NCT05552092

ET_Position

Details and patient eligibility

About

The purpose of the present study was to evaluate the optimal insertion depth of an esophageal stethoscope with a thermistor for core temperature monitoring.

Full description

Monitoring core temperature is crucial for maintaining normothermia during general anesthesia. During anesthesia, an esophageal stethoscope with a thermistor for monitoring esophageal temperature is frequently used.

There are several researches on the depth or position of the esophageal stethoscopes, but there is only limited information (known as about 40-45 cm or T8-T9).

The purpose of the present study was to evaluate the optimal insertion depth of an esophageal stethoscope with a thermistor for core temperature monitoring.

Enrollment: 40 estimated patients

Sex: All

Ages: 20 to 65 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• The patients with ASA class 1-2 (20-65 years old) who are undergoing elective surgery with supine or lithotomy position, without position change scheduled to last more than 90 min.

Exclusion criteria

• anatomical abnormality with the upper airway
• risks of a difficult airway
• abnormal central anatomical structures such as airway, diaphragm, or spine on the chest X-ray
• history of disease or surgery on the stomach or esophagus
• risks of bleeding or coagulopathy on the preoperative laboratory results
• obese patients with BMI over 30
• contraindication to insertion of ES for the surgery
• who did not take a standing chest PA X-ray before surgery
• position change during the surgery
• open chest surgery

Trial design

Primary purpose: Other

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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40 participants in 1 patient group

Experimental

Experimental group

Description:

The patients with ASA class 1-2 (20-65 years old) who are undergoing elective surgery with supine or lithotomy position, without position change, scheduled to last more than 90 min.

Treatment:

Device: Esophageal temperature monitoring according to the depth

Other: Anatomical landmark