Blood PressureNCT01087827
Body Structures Determining Differences in Forearm and Upper Arm Blood Pressures
An observational study of Blood Pressure, run by Christiana Care Health Services at 1 site in United States.
Trial summary
The first purpose of this study is to see how blood pressures taken at different sites, specifically the forearm, upper arm and heart vessels, are different. The second purpose is to see if body structures such as vessel size and depth, size of the arm, and amount of tissue in the arm influence differences in blood… Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Blood Pressure
- How many people
- 51 participants
- Where
- 1 siteUnited States
- Study dates
- Mar 2010to Aug 2012
- 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 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: patients undergoing non-emergent cardiac catheterization
Who may be able to join
- 18 years of age
- able to speak and write in English
Who cannot join
- Individuals with non-intact skin where the BP cuffs would be placed
- Individuals with injury or surgery to the arm within the last month
- Individuals with lymphedema in the limb selected for measurements
- Individuals with arteriovenous fistulas
- Individuals with differences > 5 mm Hg between right and left arm oscillometric systolic BP measurements
- Individuals with documented valvular disease
Show all 10Show fewer
- Individuals with atrial fibrillation or atrial flutter (as recommended by BP device manufacturers due to device inaccuracy)
- Individuals with an International Normalized Ratio (INR) > 1.7
- Individuals with intravenous catheters in both arms
- Individuals who require immediate cardiac surgery or unanticipated emergency treatment or who are unstable during the procedure
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Anatomical Determinants of Forearm and Upper Arm Oscillometric Blood Pressure Differences
The first purpose of this study is to see how blood pressures taken at different sites, specifically the forearm, upper arm and heart vessels, are different. The second purpose is to see if body structures such as vessel size and depth, size of the arm, and amount of tissue in the arm influence differences in blood pressures taken at these sites. The third purpose is to develop a mathematical model of the waves generated by the arm arteries (brachial and radial) to predict differences in forearm and upper arm blood pressures. The results of the study may be used to design more accurate non-invasive blood pressure monitors for the forearm site.
Read the detailed description
Accurate blood pressure (BP) measurement is required to provide appropriate healthcare. Inaccurate BPs may lead to under and/or over-treatment of health conditions and medical diseases such as hypertension. Blood pressure (BP) measurement using automatic, non-invasive oscillometric monitors is common in clinics, physicians'offices and hospital settings. The brachial (upper arm) site is the gold standard for non-invasive BPs. However, in some situations, this site is inaccessible due to injury, surgery, dialysis shunts, intravenous devices, and lymphedema. When the upper arm is difficult to access or the available BP cuffs do not fit an individual's arm, the forearm site is often the preferable alternative. The increased incidence of obesity nationally also contributes to the heightened use of forearm BPs. Questions remain concerning the accuracy of forearm non-invasive BP measurements. Although most researchers report that upper arm and forearm readings are not interchangeable, size of differences vary for individuals and factors influencing differences in readings have not been thoroughly investigated.
- Conditions
- Blood Pressure
- Keywords
- oscillometric blood pressure, cuff site, forearm blood pressure, upper arm blood pressure, anthropometric measurements, tonometry, site of blood pressure measurement, measurement accuracy
What is being measured
The primary outcome is the main question the study is designed to answer.
anatomical determinants of forearm and upper arm blood pressure differences
body mass index, upper arm circumference, biceps skin-fold measurement, forearm and upper arm vessel diameter, forearm and upper arm vessel depth
Measured: 6 months
Secondary outcomes (1)
blood pressure differences; quantitative model of waveform propagation and reflection able to predict differences between upper arm and forearm blood pressures
blood pressure at forearm, upper arm, aortic root
radial artery tonometry to determine radial artery waveform and pressure measurements non-invasively
Measured: 6 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted16 Mar 2010 (estimated)
- Study startMar 2010
- Primary completionMar 2012
- Study completionAug 2012
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (6)Papers the sponsor has linked to this study.
- Other trials for Blood PressureStudies 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
- 51 participants (actual)
Sponsor and investigators
- Lead sponsor
- Christiana Care Health Services
- Sponsor type
- University, hospital or other
- Collaborators
- University of Delaware
- Responsible party
- Sponsor
- Investigators
- Kathleen A Schell, PhD, Principal investigator, University of Delaware
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01087827
- Sponsor's protocol ID
- CCC29150
- Other IDs
- NURS175154
- Status last verified
- Nov 2012
- First submitted
- 8 Mar 2010
- Last updated
- 7 Nov 2012
- Results posted
- No
- Data monitoring committee
- No
Publications
Schell K, Lyons D, Bradley E, Bucher L, Seckel M, Wakai S, Carson E, Waterhouse J, Chichester M, Bartell D, Foraker T, Simpson EK. Clinical comparison of automatic, noninvasive measurements of blood pressure in the forearm and upper arm with the patient supine or with the head of the bed raised 45 degrees: a follow-up study. Am J Crit Care. 2006 Mar;15(2):196-205.
PubMed 16501139Schell K, Bradley E, Bucher L, Seckel M, Lyons D, Wakai S, Bartell D, Carson E, Chichester M, Foraker T, Simpson K. Clinical comparison of automatic, noninvasive measurements of blood pressure in the forearm and upper arm. Am J Crit Care. 2005 May;14(3):232-41.
PubMed 15840897Schell K, Morse K, Waterhouse JK. Forearm and upper-arm oscillometric blood pressure comparison in acutely ill adults. West J Nurs Res. 2010 Apr;32(3):322-40. doi: 10.1177/0193945909351887.
PubMed 20581399Schell K, Waterhouse,JK. Comparison of forearm and upper arm automatic noninvasive blood pressures in college students. Internet Journal of Advanced Nursing Practice 2007, 9 (1): 10 pages
Schell KA, Richards JG, Farquhar WB. The effects of anatomical structures on adult forearm and upper arm noninvasive blood pressures. Blood Press Monit. 2007 Feb;12(1):17-22. doi: 10.1097/MBP.0b013e3280858cd0.
PubMed 17303983Rose WC, Johnson DA, Spaeth JR, Edwards J, Beris, AN. Computational and experimental investigation of arterial hemodynamics. Proc. 2008 Int. Mech. Eng. Conf. Exp. Boston: ASME, 2008; 1-8.
Study at a glance
From the registry record, last updated by the sponsor on 7 Nov 2012. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Anatomical Determinants of Forearm and Upper Arm Oscillometric Blood Pressure Differences
- ClinicalTrials.gov ID
- NCT01087827
- Acronym / sponsor ID
- CCC29150
- Conditions
- Blood Pressure
- Keywords
- oscillometric blood pressure, cuff site, forearm blood pressure, upper arm blood pressure, anthropometric measurements, tonometry, site of blood pressure measurement, measurement accuracy
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 51 participants (actual)
- Lead sponsor
- Christiana Care Health ServicesUniversity, hospital or other
- Collaborators
- University of Delaware
- Study start
- Mar 2010
- Primary completion
- Mar 2012 (actual)
- Study completion
- Aug 2012 (actual)
- First posted
- 16 Mar 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.
The first purpose of this study is to see how blood pressures taken at different sites, specifically the forearm, upper arm and heart vessels, are different. The second purpose is to see if body structures such as vessel size and depth, size of the arm, and amount of tissue in the arm influence differences in blood pressures taken at these sites. The third purpose is to develop a mathematical model of the waves generated by the arm arteries (brachial and radial) to predict differences in forearm and upper arm blood pressures. The results of the study may be used to design more accurate non-invasive blood pressure monitors for the forearm site.
Detailed description
Accurate blood pressure (BP) measurement is required to provide appropriate healthcare. Inaccurate BPs may lead to under and/or over-treatment of health conditions and medical diseases such as hypertension. Blood pressure (BP) measurement using automatic, non-invasive oscillometric monitors is common in clinics, physicians'offices and hospital settings. The brachial (upper arm) site is the gold standard for non-invasive BPs. However, in some situations, this site is inaccessible due to injury, surgery, dialysis shunts, intravenous devices, and lymphedema. When the upper arm is difficult to access or the available BP cuffs do not fit an individual's arm, the forearm site is often the preferable alternative. The increased incidence of obesity nationally also contributes to the heightened use of forearm BPs. Questions remain concerning the accuracy of forearm non-invasive BP measurements. Although most researchers report that upper arm and forearm readings are not interchangeable, size of differences vary for individuals and factors influencing differences in readings have not been thoroughly investigated.
Study design
- Observational model
- Case only
- Time perspective
- Prospective
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- patients undergoing non-emergent cardiac catheterization
Key inclusion criteria (2 listed)
- 18 years of age
- able to speak and write in English
Key exclusion criteria (10 listed)
- Individuals with non-intact skin where the BP cuffs would be placed
- Individuals with injury or surgery to the arm within the last month
- Individuals with lymphedema in the limb selected for measurements
- Individuals with arteriovenous fistulas
- Individuals with differences > 5 mm Hg between right and left arm oscillometric systolic BP measurements
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
anatomical determinants of forearm and upper arm blood pressure differences
Time frame: 6 months
body mass index, upper arm circumference, biceps skin-fold measurement, forearm and upper arm vessel diameter, forearm and upper arm vessel depth
1 secondary outcome
blood pressure differences; quantitative model of waveform propagation and reflection able to predict differences between upper arm and forearm blood pressures
Time frame: 6 months
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 7 Nov 2012.
- Background: PubMed 16501139Schell K, Lyons D, Bradley E, Bucher L, Seckel M, Wakai S, Carson E, Waterhouse J, Chichester M, Bartell D, Foraker T, Simpson EK. Clinical comparison of automatic, noninvasive measurements of blood pressure in the forearm and upper arm with the patient supine or with the head of the bed raised 45 degrees: a follow-up study. Am J Crit Care. 2006 Mar;15(2):196-205.
- Background: PubMed 15840897Schell K, Bradley E, Bucher L, Seckel M, Lyons D, Wakai S, Bartell D, Carson E, Chichester M, Foraker T, Simpson K. Clinical comparison of automatic, noninvasive measurements of blood pressure in the forearm and upper arm. Am J Crit Care. 2005 May;14(3):232-41.
- Background: PubMed 20581399Schell K, Morse K, Waterhouse JK. Forearm and upper-arm oscillometric blood pressure comparison in acutely ill adults. West J Nurs Res. 2010 Apr;32(3):322-40. doi: 10.1177/0193945909351887.
- BackgroundSchell K, Waterhouse,JK. Comparison of forearm and upper arm automatic noninvasive blood pressures in college students. Internet Journal of Advanced Nursing Practice 2007, 9 (1): 10 pages
- Background: PubMed 17303983Schell KA, Richards JG, Farquhar WB. The effects of anatomical structures on adult forearm and upper arm noninvasive blood pressures. Blood Press Monit. 2007 Feb;12(1):17-22. doi: 10.1097/MBP.0b013e3280858cd0.
- BackgroundRose WC, Johnson DA, Spaeth JR, Edwards J, Beris, AN. Computational and experimental investigation of arterial hemodynamics. Proc. 2008 Int. Mech. Eng. Conf. Exp. Boston: ASME, 2008; 1-8.
Related trials for Blood Pressure
Active, not recruiting
Smartphone-Guided Paced Breathing and Aerobic Exercise for Essential Hypertension
Essential (Primary) Hypertension
Not yet recruiting
Combined Versus Multicomponent Training in People With Chronic Kidney Disease Stages 3a and 3b
Chronic Kidney Disease Stage 3A, Chronic Kidney Disease Stage 3B
Not yet recruitingObservational study
Real-World Validation for Less-Disturbing Ambulatory Blood Pressure Monitoring (ABPM) in Malaysia Using Huawei Wearables
Hypertension
RecruitingObservational study
Philips Inflationary-Based Non-Invasive Blood Pressure Validation Study
Blood Pressure Measurement
Recruiting
Community Health Worker Support to Lower Blood Pressure After a Pregnancy With High Blood Pressure
Pregnancy-Associated Hypertension, Gestational Hypertension
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.
Kathleen A Schell, PhD principal investigator
University of Delaware
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 Blood Pressure, run by Christiana Care Health Services at 1 site in United States.
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 10 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 7 Nov 2012. 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 United States. 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 determinants of forearm and upper arm blood pressure differences (time frame: 6 months). 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 NCT01087827, which also lists 6 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 7 Nov 2012.