Identification of C7; Evaluations of 2 Sonographic Methods Using a Transverse and a Sagittal Scan.

To determine the accuracy of two techniques (transverse scan and sagittal scan) using ultrasonography to identify C7 spinous process compare to the fluoroscope (standard technique)

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Key information

Conditions

Breastcancer

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

About this study

To identify the accurate level of upper thoracic spine is essential maneuver during breast surgery and axillary node dissection. Palpation C7 spinous process is most common technique using to identify the level. However, the accuracy was lower than 50%. Ultrasonography has been investigated to identify the cervical nerve roots by differentiating the transvers process of C6 and C7. However, there was no study on the accuracy of using ultrasound to identify cervical spine level before.

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

healthy volunteer, age >/= 18

Exclusion criteria

previous cervical spine surgery, cervical spine deformity, pregnancy

Treatment and study plan

Ultrasound sagittal scan

Device

Convex transducer will be placed at patient's neck using paramedian sagittal scan and pointing toward the chest apex aiming to identify the first rib. Then move the transducer medially to identify the transverse process along with identify C7 transverse process will appear on the image as a hyperechoic shadow without continue to the rib laterally. Place the C7 spinous process on the midpoint of the probe and the spinous process correspondence to the midline will be marked as C7.

Ultrasound transverse scan

Device

Linear transducer will be placed at patient's lateral neck using transverse scan. The unique characteristic of sonography of transvers process of C6 and C7 will be used to identify the transverse process of C6 and C7. C6 transverse process has a very prominence anterior tubercle (known as Chassaignac tubercle). While anterior tubercle of C7 is absent. After identifying the C7 transverse process, simultaneously the color Doppler mode will be activated to identify the vertebral artery for double confirmation.

Fluoroscopic technique

Procedure

C7 spinous process will be identified by counting down from C1 vertebral body and spinous process.

Primary outcomes

the accuracy of identify C7 spinous process

Time frame: 1 day

the accuracy of two techniques (transverse scan and sagittal scan) using ultrasonography to identify C7 spinous process compare to the fluoroscope (standard technique)

Sponsors and collaborators

Lead sponsor

Mahidol University

Other

Registry information

Official study title

Identification of the C7 Vertebral Level; Evaluations of Two Sonographic Methods Using a Transverse Scan of the C7 Transverse Process and a Sagittal Scan of the First Rib.

Important dates

Study start: 2016
Primary completion: 2016
Study completion: 2017
First posted: Jan 6, 2017
Registry last updated: Jan 18, 2017

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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Completed