Understanding how blood phobia affects fainting
Official title: Impact of Blood Phobia on Fainting Susceptibility
Run by Simon Fraser University · NCT06336031 · Data updated 2026-11-12
This study is testing how a fear of blood and needles affects fainting by looking at how people's bodies respond when they feel stressed about these things.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years to 50 Years |
| Sex | All |
| Enrollment | 20 (estimated) |
| Sponsor | Simon Fraser University Academic / other |
| Locations | 1 site (Burnaby, British Columbia) |
| Status | Recruiting |
| Started | March 30, 2024 |
| Main results expected | December 2026 |
| Study ends | December 2026 |
| Registry record updated | May 15, 2025 |
| Trial ID | NCT06336031 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates for this study are English-speaking adults aged 18 to 50, both those with and without suspected blood-injection-injury phobia.
✕Probably not a fit
Patients with diagnosed cardiovascular or neurological disorders, those who are menopausal, pregnant, or taking cardiovascular medications may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This study aims to explore the relationship between blood-injection-injury phobia and fainting susceptibility by assessing cardiovascular autonomic function during an orthostatic challenge. Participants, both with and without known needle phobia, will undergo a tilt test to evaluate their cardiovascular reflex control in response to emotional stimuli related to their phobia. The study seeks to fill the gap in understanding how emotional stress triggers hypotensive reactions that can lead to vasovagal syncope. By characterizing these responses, the research hopes to shed light on the public health implications of this phobia and its impact on healthcare avoidance behaviors.
Why it matters
Potential benefit: If successful, this study could lead to better management strategies for individuals with blood phobia, reducing their risk of fainting and improving their willingness to undergo necessary medical procedures.
How similar studies have gone: While there is limited literature on this specific approach, studies have shown that understanding the physiological responses to phobias can lead to improved treatment strategies.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * male and female * 18 to 50 years old * those without a suspected BII fear and those with a suspected fear * english speaking Exclusion Criteria: * diagnosis of any cardiovacular or neurological disorder * menopausal * taking medication for a cardiovascular condition * if they are pregnant
Where it's running
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Simon Fraser University
Burnaby, British Columbia, Canada Recruiting
Study contacts
- Principal investigator: Victoria E Claydon, PhD — Professor, Biomedical Physiology and Kinesiology
- Study coordinator: Victoria E Claydon, PhD
- Email: victoria_claydon@sfu.ca
- Phone: 7787828513
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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New method for treating reflex syncope using cardioneuroablation
This study is testing a new heart treatment called cardioneuroablation to see which of three methods works best for finding the right spots in the heart to help people with severe fainting spells.
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This study is testing if a new procedure called cardioneuroablation can help people with severe reflex syncope by improving their heart function and reducing fainting episodes.
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Registry for cardioneuroablation in patients with recurrent vasovagal syncope
This study is collecting information to see how well a new treatment called cardioneuroablation works for people with frequent fainting spells caused by vasovagal syncope.
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Improving blood pressure control in children who faint
This study is testing if certain movements can help children aged 6-18 who faint feel better by improving their blood pressure and heart function compared to regular advice.
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.