Recruitment

Recruitment Status
Active, not recruiting

Inclusion Criteria

Patients scheduled for elective breast surgeries.
Patients scheduled for elective upper abdominal surgery
Patients scheduled for elective thoracic surgery
Patients scheduled for elective breast surgeries.
Patients scheduled for elective upper abdominal surgery
Patients scheduled for elective thoracic surgery

Exclusion Criteria

Cognitive diseases
Skin lesion or infection at site of nerve block
Unstable hemodynamics
...
Cognitive diseases
Skin lesion or infection at site of nerve block
Unstable hemodynamics
Pregnant women
Allergic to local anesthetics
Chronic substance abuse (ex. alcohol, hypnotics, opioids)
Known coagulopathies,

Summary

Conditions
  • Acute Post-thoracotomy Pain
  • Pain Postoperative
  • Thorax; Pain, Spine, With Radicular and Visceral Pain
  • Ultrasound Therapy; Complications
Type
Observational
Design
  • Observational Model: Other
  • Time Perspective: Prospective

Participation Requirements

Age
Between 20 years and 80 years
Gender
Both males and females

Description

Paravertebral (PVB) and intercostal nerve block (ICNB) are both techniques of injecting local anesthetics for pain management at thoracic and upper abdominal region. Today, PVB and ICNB are performed under the guidance of surface two dimensional B-mode ultrasound. However, the procedure still carrie...

Paravertebral (PVB) and intercostal nerve block (ICNB) are both techniques of injecting local anesthetics for pain management at thoracic and upper abdominal region. Today, PVB and ICNB are performed under the guidance of surface two dimensional B-mode ultrasound. However, the procedure still carries potential risks for inexperienced operators since the target zone is very close (2-3 mm) to the pleura. In certain patients, such as those with obesity, the steep needle trajectory and poor quality of the anatomic image make the nerve block even more difficult. Inaccurate identification of the anatomical structures or suboptimal positioning of the needle tip could result in complications and blockade failure. We designed an intra-needle ultrasound (INUS) system to improve the identification of anatomical structures and needle tip position. The system passed all safety standards including electrical safety test, biocompatibility test, software certification. This study is to investigate the feasibility and image quality of INUS during ICNB and PVB. The study protocol is approved and under monitoring for safety and compliance from both Institutional Review Board of Taipei Veterans General Hospital and Ministry of Health and Welfare, Taiwan, Republic of China.

Inclusion Criteria

Patients scheduled for elective breast surgeries.
Patients scheduled for elective upper abdominal surgery
Patients scheduled for elective thoracic surgery
Patients scheduled for elective breast surgeries.
Patients scheduled for elective upper abdominal surgery
Patients scheduled for elective thoracic surgery

Exclusion Criteria

Cognitive diseases
Skin lesion or infection at site of nerve block
Unstable hemodynamics
...
Cognitive diseases
Skin lesion or infection at site of nerve block
Unstable hemodynamics
Pregnant women
Allergic to local anesthetics
Chronic substance abuse (ex. alcohol, hypnotics, opioids)
Known coagulopathies,

Locations

Taipei city, Taiwan, R.o.c., 11217
Taipei city, Taiwan, R.o.c., 11217

Tracking Information

NCT #
NCT04726930
Collaborators
National Yang Ming University
Investigators
Study Chair: FU-WEI SU, MD Taipei Veterans General Hospital, Taiwan