Jugular Venous Flow Neurosurgical Patients

NCT02002507 | Withdrawn DMC

• 1 other identifier: 13-6432
• Study Type: observational
• Target: N/A
• Locations: 1 country
• Sites: 1

Brief Summary

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.

Conditions

Jugular Venous Flow

Outcome Measures

Primary Outcomes (1)

• Jugular venous flow

  One of the following will be compared depending on the position of the patient * Bilateral internal jugular venous flow in supine and prone position * Bilateral internal jugular venous flow in supine and park bench position

  1 day

Secondary Outcomes (2)

• cross- sectional area of internal jugular vein

  1 day

• doppler velocity of jugular venous flow

  1 day

Study Arms (2)

park bench position

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

Other: comparison of different neurosurgical position

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.

Other: comparison of different neurosurgical position

Interventions

comparison of different neurosurgical position 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)

park bench position; prone position

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

Neurosurgical patients in either park bench or prone position for their surgery

You may qualify if:

• 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

You may not qualify if:

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

Sponsors & Collaborators

• University Health Network, Toronto: lead

Study Sites (1)

University Health Network, Toronto Western Hospital

Toronto, Ontario, M5T 2S8, Canada

Location

Study Officials

• Lashmi Venkatraghavan

  University Health Network, Toronto Western Hospital

  PRINCIPAL INVESTIGATOR

• Vincent Chan

  University Health Network, Toronto Western Hospital

  PRINCIPAL INVESTIGATOR

• Pirjo Manninen

  University Health Network, Toronto Western Hospital

  PRINCIPAL INVESTIGATOR

• Audrey MY Tan

  University Health Network, Toronto Western Hospital

  PRINCIPAL INVESTIGATOR

• Jigesh Mehta

  University Health Network, Toronto Western Hospital

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Dr.

Study Record Dates

• First Submitted: November 29, 2013
• First Posted: December 5, 2013
• Study Start: January 1, 2015
• Primary Completion: November 21, 2019
• Study Completion: December 31, 2019
• Last Updated: December 22, 2022

Record last verified: 2022-12

Locations

CA (1)