Effectiveness of paranasal air suction on acute migraine using portable air sucker – a randomized, double blind study
Authors: Bandara S. M. R. , Samita S. , Kiridana A. M. , Herath H. M. M. T. B. 
Published: April 2021

Abstract
Background
Migraine is a primary headache disorder and is the most common disabling primary headache disorder that occurs in children and adolescents. A recent study showed that paranasal air suction can provide relief to migraine headache. However, in order to get the maximum benefit out of it, an easy to use effective air sucker should be available. Aiming to fulfil the above requirement, a randomized, double blind control clinical trial was conducted to investigate the efficacy of a recently developed low–pressure portable air sucker.

Methods
Eighty-six Sri Lankan school children of age 16–19 years with migraine were enrolled for the study. They were randomly allocated into two groups, and one group was subjected to six intermittent ten-second paranasal air suctions using the portable air sucker for 120 s. The other group was subjected to placebo air suction (no paranasal air suction). The effect of suction using portable air sucker was the primary objective but side of headache, type of headache, and gender were also studied as source variables. The primary response studied was severity of headache. In addition, left and right supraorbital tenderness, photophobia, phonophobia, numbness over the face and scalp, nausea and generalized tiredness/weakness of the body were studied. The measurements on all those variables were made before and after suction, and the statistical analysis was performed based on before and after differences. As a follow–up, patients were monitored for 24-h period.

Results
There was a significant reduction in the severity of headache pain (OR = 25.98, P < 0.0001), which was the primary outcome variable, and other migraine symptoms studied, tenderness (left) (OR = 289.69, P < 0.0001), tenderness (right) (OR > 267.17, P < 0.0001), photophobia (OR = 2115.6, P < 0.0001), phonophobia (OR > 12.62, P < 0.0001) nausea (OR > 515.59, P < 0.0001) and weakness (OR = 549.06, P < 0.0001) except for numbness (OR = 0.747, P = 0.67) in the treatment group compared to the control group 2 min after the suction. These symptoms did not recur within 24-h period and there were no significant side effects recorded during the 24-h observation period.

Conclusion
This pilot study showed that low–pressure portable air sucker is effective in paranasal air suction, and suction for 120 s using the sucker can provide an immediate relief which can last for more than 24-h period without any side effects.

Trail registration
Clinical Trial Government Identification Number – 1548/2016.
Ethical Clearance Granted Institute – Medical Research Institute, Colombo, Sri Lanka (No 38/2016).
Sri Lanka Clinical Trial Registration No: SLCTR/2017/018.
Date of registration = 29/ 06/2017.
Approval Granting Organization to use the device in the clinical trial– National Medicines Regulatory Authority Sri Lanka (16 Jan 2018), The device won award at Geneva international inventers exhibition in 2016 and President award in 2018 in Sri Lanka. It is a patented device in Sri Lanka and patent number was SLKP/1/18295.
All methods were carried out in accordance with CONSORT 2010 guidelines.