Infrared Thermography to Evaluate the Effect of Paravertebral Block

Huazhong University of Science and Technology61 enrolled

Overview

The aim of this prospective observational study was to evaluate the changes of skin temperature after the paravertebral block measured by infrared thermography.

Methods: Patients scheduled for elective surgery with paravertebral block will receive infrared thermography measures 5 min before the block and continous to 20 min after the block. The sensitivity, specificity of infrared thermography as diagnostic methods will be determined by receiver operator characteristic analysis.

Study Type

OBSERVATIONAL

Enrollment

Conditions

Paravertebral Block

Interventions

Paravertebral block at T4 and T5 levelPROCEDURE

Paravertebral block is performed at T4 and T5 level under realtime ultrasound guidenance with 10ml of 0.5% ropivacaine for each block, respectively.

Eligibility

Sex: ALLMin age: 18 YearsMax age: 70 Years

Medical Language ↔ Plain English

Inclusion Criteria: * With informed consent * American Society of Anesthesiologists physical status Ⅰ-Ⅱ * Undergo elective surgery with planned paravertebral block Exclusion Criteria: * Refusal to participate in the study * pre-existing infection at the block site * younger than 18-yr-old * BMI\>35 * significant thoracic kyphoscoliosis * Those who had taken vasodilatory drugs before surgery * history of previous thoracic or breast surgery * Preoperative analgesic medications * Any contraindications to peripheral nerve block such as coagulation abnormalities, allergy to local anaesthetics, peripheral neuropathy.

Locations (1)

Tongji Hospital

Wuhan, Hubei, China