Radial ArteryPhase 1/2NCT03620383
Radial Artery Vasodilation Heat Study
A Phase 1/2 study testing Topical Heat in people with Radial Artery, run by Oregon Health and Science University at 1 site in United States.
Trial summary
The purpose of this study is to collect data about the efficacy of utilizing distal topical heat application for dilatation of the radial artery. Transradial arterial access is widely accepted as the standard of care for cardiac catheterization procedures due to its increased patient comfort and significantly… Read more about this study
- Who is it for?
- Ages 18 to 99 yearsHealthy volunteers can take part
- Conditions the study is for
- Radial Artery
- What is being tested?
- Topical Heat
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 45 participants
- Where
- 1 siteUnited States
- Study dates
- 3 Aug 2018to 18 Sep 2018
- Phase
- Phase 1/2
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
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 99 years
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Volunteers who are 18-99 years old
Who cannot join
- Prior left transradial access for procedure
Trial locations and contacts
1 site in 1 country.
United States1 site
Oregon Health & Science University
Portland, Oregon, 97239
About this study
Official title: Radial Artery Vasodilation With Distal Topical Heat Study
The purpose of this study is to collect data about the efficacy of utilizing distal topical heat application for dilatation of the radial artery. Transradial arterial access is widely accepted as the standard of care for cardiac catheterization procedures due to its increased patient comfort and significantly decreased risk of major vascular complications, and has been recently utilized in increasing volume by the interventional radiology community throughout the world. Due to the small size of the radial artery, catheterization may sometimes be technically difficult. Pre-procedure dilatation can make catheterization significantly easier, and studies have demonstrated the successful ability to dilate the radial artery with the use of topical nitroglycerin and lidocaine. However, the investigators hypothesize that utilizing topical heat applied distally can create a physiologic vasodilatation similar to that created with nitroglycerin and lidocaine, but at a significantly lower cost and with less risk due to no need for application of a medication which has a systemic effect with known side effects. The purpose of this study is to test the efficacy of radial artery vasodilatation with distal topical heat application.
Read the detailed description
The study will be designed to detect a significant increase in the radial artery diameter of healthy volunteers after the application of a warm heat pack in the palmar aspect of the hand compared to a control group without heat applied to the hand. Employees and students at OHSU will be considered for enrollment as volunteers for this minimal risk study. Informed consent will be obtained from healthy volunteers prior to enrollment. After enrollment, the healthy volunteers will be randomly assigned in a 2:1 ratio to the heat group (Group 1) or the control group (Group 2), respectively. A brief medical history will be obtained from all volunteers, including age, sex, medications, prior interventions, prior surgeries, previous medical diagnoses, allergies, and any history of prior transradial procedures. For protection of confidential health information, brief medical history will be obtained in a private area. The volunteers will then be seated and the left hand placed supinated in a comfortable position on a table. A limited ultrasound of the left radial artery will be performed using grayscale ultrasound. A skin mark will be made with a marker to identify the measurement site. All volunteers will then be given a commercially available warm heat pack and asked to hold gently in their left hand. For the control group (Group 2), the warm heat pack will not be activated. For the heat group (Group 1), the warm heat back will be activated prior to placing in the volunteer's hand. Two investigators will be present. One investigator will be measuring radial artery diameter and will not be aware if the heat pack is activated. The second investigator will be aware of the volunteer's randomly assigned group and will activate the heat pack for the volunteer if they are assigned to Group 1. Over a period of 20 minutes, repeat ultrasound of the left radial artery will be performed in 5 minute intervals.
- Conditions
- Radial Artery
- Being tested
- Topical Heat
- Keywords
- Transradial access, Radial artery, Vasodilation, Heat
- Medical subject headings
- Aneurysm
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Topical HeatProcedure or surgery
Warm heat pack applied topically in participant hand.
| Study group | Role | What they receive |
|---|---|---|
| Heat | Experimental | Distal topical heat application Receives: Procedure: Topical Heat |
| No Heat | No intervention | Inactive heat pack to blind the investigator. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Radial Artery Cross Sectional Area
Radial artery cross sectional area after 20 minutes with or without heat application
Measured: 20 minutes after application of topical heat
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted8 Aug 2018
- Study start3 Aug 2018
- Primary completion17 Sep 2018
- Study completion18 Sep 2018
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Other trials for Radial ArteryStudies 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
- Interventional
- Phase
- Phase 1/2
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Investigator
- Enrolment
- 45 participants (actual)
Sponsor and investigators
- Lead sponsor
- Oregon Health and Science University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Ramsey Al-Hakim, Oregon Health and Science University
- Investigators
- Ramsey Al-Hakim, MD, Principal investigator, Oregon Health and Science University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03620383
- Sponsor's protocol ID
- STUDY00018794
- Status last verified
- Aug 2019
- First submitted
- 3 Aug 2018
- Last updated
- 25 Sep 2019
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Undecided
Study at a glance
From the registry record, last updated by the sponsor on 25 Sep 2019. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Radial Artery Vasodilation With Distal Topical Heat Study
- ClinicalTrials.gov ID
- NCT03620383
- Acronym / sponsor ID
- STUDY00018794
- Conditions
- Radial Artery
- Keywords
- Transradial access, Radial artery, Vasodilation, Heat
- Phase
- Phase 1/2
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 45 participants (actual)
- Lead sponsor
- Oregon Health and Science UniversityUniversity, hospital or other
- Study start
- 3 Aug 2018 (actual)
- Primary completion
- 17 Sep 2018 (actual)
- Study completion
- 18 Sep 2018 (actual)
- First posted
- 8 Aug 2018 (actual)
- Results
- Posted 25 Sep 2019
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study is to collect data about the efficacy of utilizing distal topical heat application for dilatation of the radial artery. Transradial arterial access is widely accepted as the standard of care for cardiac catheterization procedures due to its increased patient comfort and significantly decreased risk of major vascular complications, and has been recently utilized in increasing volume by the interventional radiology community throughout the world. Due to the small size of the radial artery, catheterization may sometimes be technically difficult. Pre-procedure dilatation can make catheterization significantly easier, and studies have demonstrated the successful ability to dilate the radial artery with the use of topical nitroglycerin and lidocaine. However, the investigators hypothesize that utilizing topical heat applied distally can create a physiologic vasodilatation similar to that created with nitroglycerin and lidocaine, but at a significantly lower cost and with less risk due to no need for application of a medication which has a systemic effect with known side effects. The purpose of this study is to test the efficacy of radial artery vasodilatation with distal topical heat application.
Detailed description
The study will be designed to detect a significant increase in the radial artery diameter of healthy volunteers after the application of a warm heat pack in the palmar aspect of the hand compared to a control group without heat applied to the hand. Employees and students at OHSU will be considered for enrollment as volunteers for this minimal risk study. Informed consent will be obtained from healthy volunteers prior to enrollment. After enrollment, the healthy volunteers will be randomly assigned in a 2:1 ratio to the heat group (Group 1) or the control group (Group 2), respectively. A brief medical history will be obtained from all volunteers, including age, sex, medications, prior interventions, prior surgeries, previous medical diagnoses, allergies, and any history of prior transradial procedures. For protection of confidential health information, brief medical history will be obtained in a private area. The volunteers will then be seated and the left hand placed supinated in a comfortable position on a table. A limited ultrasound of the left radial artery will be performed using grayscale ultrasound. A skin mark will be made with a marker to identify the measurement site. All volunteers will then be given a commercially available warm heat pack and asked to hold gently in their left hand. For the control group (Group 2), the warm heat pack will not be activated. For the heat group (Group 1), the warm heat back will be activated prior to placing in the volunteer's hand. Two investigators will be present. One investigator will be measuring radial artery diameter and will not be aware if the heat pack is activated. The second investigator will be aware of the volunteer's randomly assigned group and will activate the heat pack for the volunteer if they are assigned to Group 1. Over a period of 20 minutes, repeat ultrasound of the left radial artery will be performed in 5 minute intervals.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (investigator)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Heat | Experimental | Procedure: Topical HeatDistal topical heat application |
| No Heat | No intervention | –Inactive heat pack to blind the investigator. |
Who may qualify
- Ages
- 18 to 99 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (1 listed)
- Volunteers who are 18-99 years old
Key exclusion criteria (1 listed)
- Prior left transradial access for procedure
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 |
|---|---|---|
| Topical HeatWarm heat pack applied topically in participant hand. | Procedure or surgery | Heat |
Primary outcome
Radial Artery Cross Sectional Area
Time frame: 20 minutes after application of topical heat
Radial artery cross sectional area after 20 minutes with or without heat application
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 25 Sep 2019.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Individual participant dataSharing planned: Undecided
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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.
Ramsey Al-Hakim, MD principal investigator
Oregon Health and Science University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 1/2 study testing Topical Heat in people with Radial Artery, run by Oregon Health and Science University 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 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 25 Sep 2019. 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.
What does this combined phase mean?
Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 25 Sep 2019). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
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?
Radial Artery Cross Sectional Area (time frame: 20 minutes after application of topical heat). 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 25 Sep 2019.