Jugular Venous Flow Neurosurgical Patients

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.

Recruitment Status

WITHDRAWN

Study Classification

OBSERVATIONAL

Study Start Date

2015-01-31

Study Completion Date

2019-12-31

Brief Summary

Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.

Our hypothesis is that there will be a decrease in internal jugular venous flow in the park bench position when compared to the supine position. There will also be a change in blood flow between the right and left internal jugular veins in the park bench position. In particular, there will be a greater reduction of flow on the dependent side. However, the internal jugular venous flow will be the same in both the prone and supine positions.

Detailed Description

Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.

The different positions used in neurosurgery for better accessibility to the operating field (park bench, prone) can impact cerebral venous drainage due to the effects of internal jugular venous outflow of blood, and may increase intracranial pressure. Excessive neck flexion and rotation in the park bench position, or flexion in the prone position, may lead to kinking or twisting of the internal jugular vein. This has been hypothesized as the major cause of disturbed venous drainage during surgery and may lead to neck swelling, brachial plexus injury, macroglossia (swollen tongue), delayed airway obstruction, and increases in intracranial pressure in postoperative patients. Optimal brain perfusion is best in the neutral position of the head, but surgery cannot always be performed in this position. Thus, we look to measure the internal jugular venous flow at different positions, as there have been few studies looking at this important contributing factor.

Conditions

See the medical conditions and disease areas that this research is targeting or investigating.

Jugular Venous Flow

Study Design

Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.

Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

Review each arm or cohort in the study, along with the interventions and objectives associated with them.

park bench position

Comparing jugular venous flow in supine and park bench position in neurosurgical patients requiring their surgery in park bench position

comparison of different neurosurgical position

Intervention Type OTHER

in 2 of 3 positions (supine, plus either prone or park bench) with both left and right internal jugular vein cross-sectional area of vein, doppler velocity, internal jugular venous flow, position of internal jugular vein in relation to carotid artery (All measured with the use of ultrasound)

prone position

Comparing the jugular venous flow in the supine and prone position in patients requiring their surgery to be done in the prone position.

comparison of different neurosurgical position

Intervention Type OTHER

in 2 of 3 positions (supine, plus either prone or park bench) with both left and right internal jugular vein cross-sectional area of vein, doppler velocity, internal jugular venous flow, position of internal jugular vein in relation to carotid artery (All measured with the use of ultrasound)

Interventions

Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.

comparison of different neurosurgical position

in 2 of 3 positions (supine, plus either prone or park bench) with both left and right internal jugular vein cross-sectional area of vein, doppler velocity, internal jugular venous flow, position of internal jugular vein in relation to carotid artery (All measured with the use of ultrasound)

Intervention Type OTHER

Eligibility Criteria

Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.

Inclusion Criteria

* Adult neurosurgical patients who are above the age of 18
* Patients undergoing neurosurgery requiring general anesthesia and placement in either in prone or park bench position for surgical accessibility

Exclusion Criteria

* Lack of informed consent
* Patients undergoing surgical procedures only in the supine position
* Patients needing a central venous catheter in the neck

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Responsible Party

Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.

Lashmi Venkatraghavan

Dr.

Responsibility Role PRINCIPAL_INVESTIGATOR