The Effect of Stellate Ganglion Block on Intracranial Pressure Predicted by Ultrasonographic Assessment of Optic Nerve Sheath Diameter

The stellate ganglion block increase cerebral blood flow, as the consequence of that, it has the potential to cause an increase of intracranial pressure (ICP). Previous studies have proposed that ultrasonographic measurements of the optic nerve sheath diameter (ONSD) correlate with signs of increased ICP. Therefore, this study is aim to confirm the increased ICP by ultrasonographic measurement of ONSD after the stellate ganglion block.

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Key information

Conditions

Pain Intracranial Pressure Neurologic Manifestations Pathological Conditions, Signs and Symptoms Signs and Symptoms

Age range

20 year–70 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Severance Hospital

Seoul, 120-752, South Korea

Who can participate

Healthy volunteers accepted: No

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

Inclusion criteria

Adult patients (20-70 years of age)
who were scheduled to receive stellate ganglion block at our pain management clinic

Exclusion criteria

Patients with previous history of neurologic disease, carotid disease, transient ischemic attack, ocular disease and ocular surgery
Patients with coagulation disorder
Patients with severe obesity
Patients with severe cardiovascular or pulmonary disease
Patients with cognitive deficits or psychiatric illness

Treatment and study plan

ultrasonographic measurement of optic nerve sheath diameter

Procedure

A thick layer of gel is applied on the upper closed eyelid. The linear 13- to 6-MHz ultrasound probe is then placed in the gel, without exerting pressure on the eye. Two measurements are taken for each optic nerve: one in the transverse plane, with the probe being horizontal, and one in the sagittal plane, with the probe being vertical. The final ONSD is the mean of these measurements.

Primary outcomes

ultrasonographic measurement of optic nerve sheath diameter

Time frame: 15 minutes

Sponsors and collaborators

Lead sponsor

Yonsei University

Other

Registry information

Important dates

Study start: 2013
Primary completion: 2013
Study completion: 2013
First posted: Apr 26, 2013
Registry last updated: Jan 28, 2015

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.

Published trials that share one or more normalized conditions with this study.

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