Estimation of the Region Blocked by Epidural Anesthesia based on Skin Temperature Change, and Research on Improving Postoperative Analgesia

Estimation of the Region Blocked by Epidural Anesthesia based on Skin Temperature Change, and Research on Improving Postoperative Analgesia - Estimation of the Region Blocked by Epidural Anesthesia based on Skin Temperature Change, and Research on Improving Postoperative Analgesia

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000022372

Enrollment

100

Registered

2016-06-01

Start date

2016-03-22

Completion date

Unknown

Last updated

2026-06-29

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

Conditions

Patients who are scheduled to undergo combined general and epidural anesthesia at our hospital.

Interventions

An epidural anesthetic will be continuously administered starting 30-60 minutes before the completion of surgery. After the patient awakens from the general anesthesia, a thermographic camera will be

on the other hand, if the effect is assessed to be excessive(&gt

5 segments), the flow rate of continuous anesthesia will be decreased.

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Among patients who are scheduled to undergo combined general and epidural anesthesia at our hospital, those who agree to participate in our study will be selected as study subjects.

Exclusion criteria

Exclusion criteria: None.

Design outcomes

Primary

Measure	Time frame
An epidural anesthetic will be continuously administered starting 30-60 minutes before the completion of surgery. After the patient awakens from the general anesthesia, a thermographic camera will be used to determine how many segments the wound site is apart from the site of the sympathetic ganglion block. Although it is an unlikely event, if the analgesic effect is assessed to be inadequate (less than 2 segments), 3 ml of 0.2% ropivacaine will be added; on the other hand, if the effect is assessed to be excessive(>5 segments), the flow rate of continuous anesthesia will be decreased. The severity of postoperative pain will be assessed by ward nurses on a 4-point scale based on the amount of rescue analgesic administered to the patient.	—

Measure

Time frame

An epidural anesthetic will be continuously administered starting 30-60 minutes before the completion of surgery. After the patient awakens from the general anesthesia, a thermographic camera will be used to determine how many segments the wound site is apart from the site of the sympathetic ganglion block. Although it is an unlikely event, if the analgesic effect is assessed to be inadequate (less than 2 segments), 3 ml of 0.2% ropivacaine will be added; on the other hand, if the effect is assessed to be excessive(>5 segments), the flow rate of continuous anesthesia will be decreased. The severity of postoperative pain will be assessed by ward nurses on a 4-point scale based on the amount of rescue analgesic administered to the patient.

—

Countries

Japan

Contacts

Public ContactTaeko Fukuda

Kasumigaura Medical Center Department of Anesthesiology

kasumi@kasumi.hosp.go.jp029-822-5050

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026