Paravertebral Block
Conditions
Keywords
Paravertebral block, Infrared thermography
Brief summary
The aim of this prospective observational study was to evaluate the changes of skin temperature after the paravertebral block measured by infrared thermography.
Detailed description
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.
Interventions
PROCEDUREParavertebral block at T4 and T5 level
Paravertebral block is performed at T4 and T5 level under realtime ultrasound guidenance with 10ml of 0.5% ropivacaine for each block, respectively.
Sponsors
Huazhong University of Science and Technology
Study design
Observational model
CASE_CONTROL
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to 70 Years
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.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Changes of skin temperature | From baseline up to 20 minutes after block | Changes of skin temperature determined by infrared thermography |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Noinvasive blood pressure | From baseline up to 20 minutes after block | Vital signs |
| Heart rate | From baseline up to 20 minutes after block | Vital signs |
| SPO2 | From baseline up to 20 minutes after block | vital signs |
| Sensory block level | From baseline up to 20 minutes after block | Sensory block level determined by pinprick. |
Countries
China
Outcome results
None listed