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SurgeryNCT03547401

Ankle/Brachial Non-Invasive Blood Pressure Difference During General Anesthesia

An observational study of Surgery, run by Philippe VAN DER LINDEN at 1 site in Belgium.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Brachial non-invasive blood pressure (NIBP) monitoring is recommended as part of the American Society of Anesthesiology (ASA) basic monitoring package. Although brachial NIBP is often practical, some surgeries and patients may require NIBP measurement elsewhere (e.g. the ankle). Read more about this study

Who is it for?
Ages 15 to 40 years
Conditions the study is for
Surgery
What is being tested?
Ankle Non-invasive Blood pressure measurement and Arm Non-invasive Blood pressure measurement
Type of treatment
Medical device
How many people
25 participants
Where
1 siteBelgium
Study dates
1 Aug 2018to 5 Sep 2018
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 15 to 40 years
  • All sexes
  • No healthy volunteers
  • Child, Adult

Study population: Patient undergoing elective surgery requiring general anesthesia in supine position. American Society of Anesthesiology (ASA) pysical status score 1.

Who may be able to join

  • American Society of Anesthesiology (ASA) pysical status score 1
  • Patient undergoing elective surgery requiring general anesthesia in supine position

Who cannot join

  • Patient refusal
  • systemic pathology
  • Body mass index (BMI) superior to 30
  • Surgeon requiring a position other than supine

Trial locations and contacts

1 site in 1 country.

Belgium1 site
  • CHU Brugmann

    Brussels, 1020

Other trials in Belgium

About this study

Official title: Ankle/Brachial Non-Invasive Blood Pressure Difference During General Anesthesia: a Prospective Cohort Observational Study in Young Healthy Patients

Brachial non-invasive blood pressure (NIBP) monitoring is recommended as part of the American Society of Anesthesiology (ASA) basic monitoring package. Although brachial NIBP is often practical, some surgeries and patients may require NIBP measurement elsewhere (e.g. the ankle).

Several studies have shown that ankle NIBP overestimates brachial NIBP measurements. Algorithms have been proposed, based on correlation studies, to estimate brachial NIBP from ankle NIBP during general anesthesia and mechanical ventilation. These algorithms, however, are based on both heterogeneous populations and surgeries.

Our aim was to determine if ankle brachial NIBP difference occurs in in young ASA physical status 1 patients undergoing general anesthesia in the supine position. We also aim to determine if this difference is constant during anesthesia or if it varies according to different predefined time points.

Conditions
Surgery
Being tested
Ankle Non-invasive Blood pressure measurement, Arm Non-invasive Blood pressure measurement

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Ankle Non-invasive Blood pressure measurementDevice

    Non-invasive blood pressure measured simultaneously at the arm (model IntelliVue M8105a MP5 Phillips, calibrated).

  • Arm Non-invasive Blood pressure measurementDevice

    Non-invasive blood pressure measured simultaneously at the ankle (model IntelliVue M8105a MP5 Phillips, calibrated).

Study groups in NCT03547401
Study groupRoleWhat they receive
General anesthesiaPatient (15 to 40 years old) undergoing elective surgery requiring general anesthesia in supine position.
Receives: Device: Ankle Non-invasive Blood pressure measurement; Device: Arm Non-invasive Blood pressure measurement

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Ankle Brachial non-invasive blood pressure difference - time point 1

    Difference between the non-invasive blood pressure measured at the ankle and at the arm, before induction of anesthesia

    Measured: 1 day

  2. Ankle Brachial non-invasive blood pressure difference - time point 2

    Difference between the non-invasive blood pressure measured at the ankle and at the arm, after induction of anesthesia

    Measured: 1 day

  3. Ankle Brachial non-invasive blood pressure difference - time point 3

    Difference between the non-invasive blood pressure measured at the ankle and at the arm, after securing airway

    Measured: 1 day

  4. Ankle Brachial non-invasive blood pressure difference - time point 4

    Difference between the non-invasive blood pressure measured at the ankle and at the arm, at surgical incision

    Measured: 1 day

  5. Ankle Brachial non-invasive blood pressure difference - time point 5

    Difference between the non-invasive blood pressure measured at the ankle and at the arm, 10 minutes after surgical incision

    Measured: 1 day

  6. Ankle Brachial non-invasive blood pressure difference - time point 6

    Difference between the non-invasive blood pressure measured at the ankle and at the arm, at reversal of anesthesia

    Measured: 1 day

Secondary outcomes (3)
  1. Pain at the arm (yes/no)

    Answer 'yes' or 'no' to the question 'pain at the arm' in postoperative period

    Measured: 1 day

  2. Pain at the ankle (yes/no)

    Answer 'yes' or 'no' to the question 'pain at the ankle' in postoperative period

    Measured: 1 day

  3. Ankle Brachial NIBP difference variation

    Determine if Ankle Brachial NIBP difference remains constant or varies during different intraoperative periods

    Measured: 1 day

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted6 Jun 2018
  2. Study start1 Aug 2018
  3. Primary completion5 Sep 2018
  4. Study completion5 Sep 2018

Resources

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
Cohort
Time perspective
Prospective
Enrolment
25 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03547401
Sponsor's protocol ID
CHUB-ABI
Status last verified
Sep 2018
First submitted
24 May 2018
Last updated
12 Sep 2018
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Wilkes JM, DiPalma JA. Brachial blood pressure monitoring versus ankle monitoring during colonoscopy. South Med J. 2004 Oct;97(10):939-41. doi: 10.1097/01.SMJ.0000129929.28792.77.

    PubMed 15558917
  • Drake MJ, Hill JS. Observational study comparing non-invasive blood pressure measurement at the arm and ankle during caesarean section. Anaesthesia. 2013 May;68(5):461-6. doi: 10.1111/anae.12194. Epub 2013 Mar 11.

    PubMed 23480469
  • Aboyans V, Criqui MH, Abraham P, Allison MA, Creager MA, Diehm C, Fowkes FG, Hiatt WR, Jonsson B, Lacroix P, Marin B, McDermott MM, Norgren L, Pande RL, Preux PM, Stoffers HE, Treat-Jacobson D; American Heart Association Council on Peripheral Vascular Disease; Council on Epidemiology and Prevention; Council on Clinical Cardiology; Council on Cardiovascular Nursing; Council on Cardiovascular Radiology and Intervention, and Council on Cardiovascular Surgery and Anesthesia. Measurement and interpretation of the ankle-brachial index: a scientific statement from the American Heart Association. Circulation. 2012 Dec 11;126(24):2890-909. doi: 10.1161/CIR.0b013e318276fbcb. Epub 2012 Nov 16. No abstract available.

    PubMed 23159553

Questions about this trial

What is this clinical trial studying?

An observational study of Surgery, run by Philippe VAN DER LINDEN at 1 site in Belgium.

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 2 inclusion and 4 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 12 Sep 2018. 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 Belgium. 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?

Ankle Brachial non-invasive blood pressure difference - time point 1 (time frame: 1 day). The study lists 6 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT03547401, which also lists 3 linked publications.

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 12 Sep 2018.

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