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Completed

NCT Number: NCT03782077

Change of Optic Nerve Sheath Diameter After Deflation of Pneumatic Tourniquet

The purpose of this study is to evaluate the change of the optic nerve sheath diameter after deflation of pneumatic tourniquet.

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Key information

Conditions

Intracranial Pressure Increase Brain Diseases Central Nervous System Diseases Intracranial Hypertension Nervous System Diseases

Age range

18 year–79 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Asan Medical Center

Seoul, 05505, South Korea

About this study

Deflation of pneumatic tourniquet could induces many changes in various organ systems. It has been shown to affect intracranial pressure. Thus, the investigators evaluate the change of optic nerve sheath diameter using ultrasound after deflation of pneumatic tourniquet in patients undergoing knee surgery.

Who can participate

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

Inclusion criteria

  • ASA physical status 1-4
  • patients undergoing knee surgery using pneumatic tourniquet

Exclusion criteria

  • patients who refuse to participate in this study
  • patients with history of cerebrovascular disease
  • patients who are judged ineligible by the medical staff to participate in the study for other reasons

Treatment and study plan

Deflation of pneumatic tourniquet

Procedure

Deflation of pneumatic tourniquet

Primary outcomes

  1. change of optic nerve sheath diameter

    Time frame: 5 minutes before deflation and at 5-minute intervals for 10 minutes after deflation

    difference in optic nerve sheath diameter measured using ultrasound before and after deflation of pneumatic tourniquet

Sponsors and collaborators

Lead sponsor

Asan Medical Center

Other

Registry information

Official study title

Effect of Deflation of Pneumatic Tourniquet on the Change of Optic Nerve Sheath Diameter in Patients Undergoing Knee Surgery

Important dates

Study start
2018
Primary completion
2018
Study completion
2018
First posted
Dec 20, 2018
Registry last updated
Dec 21, 2018

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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