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Completed

NCT Number: NCT04078347

Infrared Thermography to Evaluate the Effect of Paravertebral Block

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

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Key information

Conditions

Paravertebral Block

Age range

18 year–70 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Tongji Hospital

Wuhan, Hubei, 430030, China

About this study

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.

Who can participate

Only the study team can determine whether someone qualifies for participation.

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.

Treatment and study plan

Paravertebral block at T4 and T5 level

Procedure

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

Primary outcomes

  1. Changes of skin temperature

    Time frame: From baseline up to 20 minutes after block

    Changes of skin temperature determined by infrared thermography

Secondary outcomes

  1. Noinvasive blood pressure

    Time frame: From baseline up to 20 minutes after block

    Vital signs

  2. Heart rate

    Time frame: From baseline up to 20 minutes after block

    Vital signs

  3. SPO2

    Time frame: From baseline up to 20 minutes after block

    vital signs

  4. Sensory block level

    Time frame: From baseline up to 20 minutes after block

    Sensory block level determined by pinprick.

Sponsors and collaborators

Lead sponsor

Huazhong University of Science and Technology

Other

Registry information

Official study title

Changes of Skin Temperature for Evaluation of Paravertebral Block: A Prospective Observational Study Using Infrared Thermography

Important dates

Study start
2019
Primary completion
2020
Study completion
2020
First posted
Sep 6, 2019
Registry last updated
Jan 12, 2021

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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