Simanta Roy, Mohammad Azmain Iktidar, Sreshtha Chowdhury, Orindom Shing Pulock, Susmita Dey Pinky, Azaz Bin Sharif
Increased screen time and its association to migraine and tension-type headache: a cross-sectional investigation among Bangladeshi students
BMJ neurology open
modified ninestep test classical method evaluating eustachian tube function however clinical interpretation increased maximal difference middle ear pressure mdmep modified ninestep test unknown hypothesised different reservoir effects mastoid cavity bias results modified ninestep test total 108 consecutive participants 216 ears retrospectively screened 55 participants 82 ears met inclusionexclusion criteria enrolled volumetric results mastoid cavity parameters modified ninestep test mdmep middle ear pressure tympanic membrane compliance demographic data analysed significant negative correlation found mdmep mastoid cavity volume r 467 p 001 ears mdmep 70 dapa showed poor pneumatization mastoid cavity volumes less 3000 mm3 10th percentile ears analysed ears mastoid cavity volumes lower 25th percentile showed significantly higher mdmep p 001 patients mastoid cavity volumes higher 75th percentile significantly younger p 001 multivariate regression analysis mdmep showed good fit r 854 using factors including middle ear pressure admittance importantly reciprocal mastoid volume beta 0752 p 001 mdmep main parameter modified ninestep test negatively correlated mastoid cavity volume therefore results modified ninestep test interpreted consideration mastoid cavity volume