Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Thoracic paravertebral space location. A new method using pressure measurement

J Richardson1, S P Cheema, J Hawkins

  • 1Department of Anaesthetics and Thoracic Surgery, Bradford Royal Infirmary.

Anaesthesia
|February 1, 1996
PubMed
Summary

Measuring pressure changes during needle insertion can improve the success rate of thoracic paravertebral analgesia. This objective

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

"The System is Overwhelming and Frustrating and Discouraging": Stress and Social Support for Affected Family Carers in an Unregulated Drug Crisis.

Substance use & misuse·2026
Same author

Clinical characterization of FGFR2b expression in patients with advanced gastric or gastroesophageal junction adenocarcinoma.

ESMO open·2025
Same author

Multiple Fractures and Hypercalcaemia Secondary to Parathyroid Hormone-Related Peptide (PTHrP): An Uncommon Presentation of Hepatoblastoma.

Journal of paediatrics and child health·2025
Same author

Perceptions of friendship, peers and influence on adolescent smoking according to tobacco control context: a systematic review and meta-ethnography of qualitative research.

BMC public health·2023
Same author

Towards an action plan for characterizing food plant diversity.

Nature plants·2022
Same author

Anaesthesia for transoral robotic surgery.

BJA education·2022

Area of Science:

  • Anesthesiology
  • Pain Management
  • Thoracic Surgery

Background:

  • The traditional loss of resistance method for locating the paravertebral space has a significant failure rate (≥10%).
  • Accurate paravertebral space localization is crucial for effective thoracic paravertebral analgesia.

Purpose of the Study:

  • To evaluate the efficacy of pressure measurement during needle advancement for improving paravertebral space localization.
  • To determine if 'pressure inversion' can enhance the reliability of thoracic paravertebral block placement.

Main Methods:

  • Investigated pressure changes (inspiratory vs. expiratory) during needle insertion in 14 awake adult patients.
  • Monitored pressure dynamics in the erector spinae muscle and upon traversing the superior costo-transverse ligament.

Related Experiment Videos

  • Confirmed needle placement using X-ray screening and contrast injection.

    • Main Results:

    • A distinct 'pressure inversion' pattern was observed upon entering the paravertebral space: expiratory pressure exceeded inspiratory pressure.
    • Mean pressures shifted from inspiratory dominance (29.5 mmHg) in the erector spinae to expiratory dominance (7.6 mmHg) in the paravertebral space.
    • All 29 blocks were successfully and uncomplicatedly performed, with no negative pressures recorded.

    Conclusions:

    • Objective pressure measurement ('pressure inversion') offers improved sensitivity and specificity for paravertebral space localization.
    • This method has the potential to significantly increase the success rate of thoracic paravertebral analgesia.
    • Pressure monitoring provides a reliable and objective technique for guiding needle placement in thoracic paravertebral blocks.