Anesthesia, GeneralNCT01168453
Changes in Anatomical Landmark Locations
An observational study of Anesthesia, General and Intubation, run by Soonchunhyang University Hospital at 1 site in South Korea.
Trial summary
This study was performed to ultrasonographically demonstrate the changes in relationship between the right internal jugular vein (IJV) and an anatomical landmark in two different head positions: neutral and rotational. Read more about this study
- Who is it for?
- Ages 18 to 80 years
- Conditions the study is for
- Anesthesia, General, Intubation
- What is being tested?
- head position change
- Type of treatment
- Lifestyle or therapy programme
- How many people
- 100 participants
- Where
- 1 siteSouth Korea
- Study dates
- May 2009to Apr 2010
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 80 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: Patients scheduled for elective surgery under general anesthesia with endotracheal intubation, were enrolled in the study between May 2009 and February 2010.
Who may be able to join
- 100 patients weighing 40 - 100 kg and with heights of 140 - 190 cm
Who cannot join
- a history of neck surgery or trauma involving the neck, previous IJV-related interventions (e.g., venous catheterization), limitation of neck movement, and a body mass index ≥ 30.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Changes in the Relationship Between the Right Internal Jugular Vein and Anatomical Landmark After Head Rotation
This study was performed to ultrasonographically demonstrate the changes in relationship between the right internal jugular vein (IJV) and an anatomical landmark in two different head positions: neutral and rotational.
Read the detailed description
Background: This study was performed to ultrasonographically demonstrate the changes in relationship between the right IJV and an anatomical landmark in two different head positions: neutral and rotational.
Methods: One hundred patients scheduled for elective surgery under general anesthesia with endotracheal intubation were enrolled in this study. The patients were placed in the supine position with a neutral head position and without a pillow. The apex of the triangle formed by the sternal and clavicular heads of the sternocleidomastoid muscle and clavicle was marked (anatomical landmark point: AL point). The ultrasonography of the neck anatomy was performed, and a mark was placed at the central point of the IJV to the skin (ultrasonography point: US point). The other investigator measured the distances from the AL point to the US point (AL-US distance). The patient's head was then turned 30° to the left; the same procedure was repeated and the AL-US distance was again measured. The changes in AL-US distance were calculated.
- Conditions
- Anesthesia, General, Intubation
- Being tested
- head position change
- Keywords
- jugular vein, anatomy, ultrasonography
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
head position changeBehavioural
AL-US distance measure using the ultrasound in two different head position
| Study group | Role | What they receive |
|---|---|---|
| neutral head position | supine with neutral head position Receives: Behavioral: head position change | |
| head rotation | supine with 30° head rotation Receives: Behavioral: head position change |
What is being measured
The primary outcome is the main question the study is designed to answer.
anatomical landmark point (AL) - ultrasonography point (US) distance(the distances from the AL point to the US point )
The distance between the two points was considered "positive" if the US point was lateral to the AL point and "negative" if it was medial to the AL point.
Measured: within 5 minutes after itubation
Secondary outcomes (1)
The average depth of the right IJV
measure the depth of the right IJV center in ultrasonography
Measured: within 5 minutes after intubation
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted23 Jul 2010 (estimated)
- Study startMay 2009
- Primary completionFeb 2010
- Study completionApr 2010
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Anesthesia, GeneralStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Case only
- Time perspective
- Prospective
- Enrolment
- 100 participants (actual)
Sponsor and investigators
- Lead sponsor
- Soonchunhyang University Hospital
- Sponsor type
- University, hospital or other
- Investigators
- Sun Young Park, Dr., Study chair, Soonchuhyang University Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01168453
- Sponsor's protocol ID
- LoIJV
- Status last verified
- Jul 2010
- First submitted
- 21 Jul 2010
- Last updated
- 9 Aug 2010
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 9 Aug 2010. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Changes in the Relationship Between the Right Internal Jugular Vein and Anatomical Landmark After Head Rotation
- ClinicalTrials.gov ID
- NCT01168453
- Acronym / sponsor ID
- LoIJV
- Conditions
- Anesthesia, General, Intubation
- Keywords
- jugular vein, anatomy, ultrasonography
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 100 participants (actual)
- Lead sponsor
- Soonchunhyang University HospitalUniversity, hospital or other
- Study start
- May 2009
- Primary completion
- Feb 2010 (actual)
- Study completion
- Apr 2010 (actual)
- First posted
- 23 Jul 2010 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study was performed to ultrasonographically demonstrate the changes in relationship between the right internal jugular vein (IJV) and an anatomical landmark in two different head positions: neutral and rotational.
Detailed description
Background: This study was performed to ultrasonographically demonstrate the changes in relationship between the right IJV and an anatomical landmark in two different head positions: neutral and rotational.
Methods: One hundred patients scheduled for elective surgery under general anesthesia with endotracheal intubation were enrolled in this study. The patients were placed in the supine position with a neutral head position and without a pillow. The apex of the triangle formed by the sternal and clavicular heads of the sternocleidomastoid muscle and clavicle was marked (anatomical landmark point: AL point). The ultrasonography of the neck anatomy was performed, and a mark was placed at the central point of the IJV to the skin (ultrasonography point: US point). The other investigator measured the distances from the AL point to the US point (AL-US distance). The patient's head was then turned 30° to the left; the same procedure was repeated and the AL-US distance was again measured. The changes in AL-US distance were calculated.
Study design
- Observational model
- Case only
- Time perspective
- Prospective
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| neutral head position | – | Behavioral: head position changesupine with neutral head position |
| head rotation | – | Behavioral: head position changesupine with 30° head rotation |
Who may qualify
- Ages
- 18 to 80 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Patients scheduled for elective surgery under general anesthesia with endotracheal intubation, were enrolled in the study between May 2009 and February 2010.
Key inclusion criteria (1 listed)
- 100 patients weighing 40 - 100 kg and with heights of 140 - 190 cm
Key exclusion criteria (1 listed)
- a history of neck surgery or trauma involving the neck, previous IJV-related interventions (e.g., venous catheterization), limitation of neck movement, and a body mass index ≥ 30.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| head position changeAL-US distance measure using the ultrasound in two different head position | Behavioural | head rotation, neutral head position |
Primary outcome
anatomical landmark point (AL) - ultrasonography point (US) distance(the distances from the AL point to the US point )
Time frame: within 5 minutes after itubation
The distance between the two points was considered "positive" if the US point was lateral to the AL point and "negative" if it was medial to the AL point.
1 secondary outcome
The average depth of the right IJV
Time frame: within 5 minutes after intubation
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 9 Aug 2010.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Sun Young Park, Dr. study chair
Soonchuhyang University Hospital
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Anesthesia, General and Intubation, run by Soonchunhyang University Hospital at 1 site in South Korea.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 9 Aug 2010. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in South Korea. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
anatomical landmark point (AL) - ultrasonography point (US) distance(the distances from the AL point to the US point ) (time frame: within 5 minutes after itubation). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 9 Aug 2010; AzTrials last refreshed its copy on 30 Oct 2026.