Neckties and Cerebrovascular Reactivity in Young Healthy Males: A Pilot Randomised Crossover Trial
Background. A necktie may elevate intracranial pressure through compression of venous return. We hypothesised that a tight necktie would deleteriously alter cerebrovascular reactivity. Materials and Methods. A necktie was simulated using bespoke apparatus comprising pneumatic inner-tube with aneroi...
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| Format: | Article |
| Language: | English |
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Wiley
2011-01-01
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| Series: | Stroke Research and Treatment |
| Online Access: | http://dx.doi.org/10.4061/2011/692595 |
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| author | Mark Rafferty Terence J. Quinn Jesse Dawson Matthew Walters |
| author_facet | Mark Rafferty Terence J. Quinn Jesse Dawson Matthew Walters |
| author_sort | Mark Rafferty |
| collection | DOAJ |
| description | Background. A necktie may elevate intracranial pressure through compression of venous return. We hypothesised that a tight necktie would deleteriously alter cerebrovascular reactivity. Materials and Methods. A necktie was simulated using bespoke apparatus comprising pneumatic inner-tube with aneroid pressure-gauge. Using a randomised crossover design, cerebrovascular reactivity was measured with the “pseudo-tie” worn inflated or deflated for 5 minutes (simulating tight/loose necktie resp.). Reactivity was calculated using breath hold index (BHI) and paired “t” testing used for comparative analysis. Results. We enrolled 40 healthy male volunteers. There was a reduction in cerebrovascular reactivity of 0.23 units with “tight” pseudotie (BHI loose 1.44 (SD 0.48); BHI tight 1.21 (SD 0.38) P<.001). Conclusion. Impairment in cerebrovascular reactivity was found with inflated pseudo-tie. However, mean BHI is still within a range of considered normal. The situation may differ in patients with vascular risk factors, and confirmatory work is recommended. |
| format | Article |
| id | doaj-art-ee6813ae8549422b9b28c2f15813f972 |
| institution | Kabale University |
| issn | 2042-0056 |
| language | English |
| publishDate | 2011-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Stroke Research and Treatment |
| spelling | doaj-art-ee6813ae8549422b9b28c2f15813f9722025-02-03T01:31:17ZengWileyStroke Research and Treatment2042-00562011-01-01201110.4061/2011/692595692595Neckties and Cerebrovascular Reactivity in Young Healthy Males: A Pilot Randomised Crossover TrialMark Rafferty0Terence J. Quinn1Jesse Dawson2Matthew Walters3Institute of Cardiovascular and Medical Sciences, College of Medical and Life Sciences, University of Glasgow, Glasgow G11 6NT, UKInstitute of Cardiovascular and Medical Sciences, College of Medical and Life Sciences, University of Glasgow, Glasgow G11 6NT, UKInstitute of Cardiovascular and Medical Sciences, College of Medical and Life Sciences, University of Glasgow, Glasgow G11 6NT, UKInstitute of Cardiovascular and Medical Sciences, College of Medical and Life Sciences, University of Glasgow, Glasgow G11 6NT, UKBackground. A necktie may elevate intracranial pressure through compression of venous return. We hypothesised that a tight necktie would deleteriously alter cerebrovascular reactivity. Materials and Methods. A necktie was simulated using bespoke apparatus comprising pneumatic inner-tube with aneroid pressure-gauge. Using a randomised crossover design, cerebrovascular reactivity was measured with the “pseudo-tie” worn inflated or deflated for 5 minutes (simulating tight/loose necktie resp.). Reactivity was calculated using breath hold index (BHI) and paired “t” testing used for comparative analysis. Results. We enrolled 40 healthy male volunteers. There was a reduction in cerebrovascular reactivity of 0.23 units with “tight” pseudotie (BHI loose 1.44 (SD 0.48); BHI tight 1.21 (SD 0.38) P<.001). Conclusion. Impairment in cerebrovascular reactivity was found with inflated pseudo-tie. However, mean BHI is still within a range of considered normal. The situation may differ in patients with vascular risk factors, and confirmatory work is recommended.http://dx.doi.org/10.4061/2011/692595 |
| spellingShingle | Mark Rafferty Terence J. Quinn Jesse Dawson Matthew Walters Neckties and Cerebrovascular Reactivity in Young Healthy Males: A Pilot Randomised Crossover Trial Stroke Research and Treatment |
| title | Neckties and Cerebrovascular Reactivity in Young Healthy Males: A Pilot Randomised Crossover Trial |
| title_full | Neckties and Cerebrovascular Reactivity in Young Healthy Males: A Pilot Randomised Crossover Trial |
| title_fullStr | Neckties and Cerebrovascular Reactivity in Young Healthy Males: A Pilot Randomised Crossover Trial |
| title_full_unstemmed | Neckties and Cerebrovascular Reactivity in Young Healthy Males: A Pilot Randomised Crossover Trial |
| title_short | Neckties and Cerebrovascular Reactivity in Young Healthy Males: A Pilot Randomised Crossover Trial |
| title_sort | neckties and cerebrovascular reactivity in young healthy males a pilot randomised crossover trial |
| url | http://dx.doi.org/10.4061/2011/692595 |
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