Fluoroscopic balloon diameter measurement at different pressures during Eustachian balloon dilation

Byung Chul Kang, Woo Seok Kang, Jun Woo Park, Jung Hoon Park, Kun Yung Kim, Ho Young Song, Hong Ju Park

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

Objectives: To measure the diameter of inflated balloons at different pressures during Eustachian tube (ET) balloon dilation under fluoroscopic guidance. Design: Prospective cohort study. Setting: Tertiary academic referral centre. Participants: Eighteen patients who underwent ET balloon dilation with use of a balloon catheter, 20 mm long and 6 mm in diameter, under combined endoscopic and fluoroscopic guidance. Main outcome measures: Degrees of inflation at three different portions (proximal, middle and distal) of the balloon at controlled pressures (3, 5, 8 and 10 atmospheres [atm]) and at the maximum pressure manually applied. Results: The mean proximal, middle and distal diameters of the inflated balloons were 5.3 ± 0.4 mm, 5.3 ± 0.4 mm and 4.9 ± 0.5 mm at 10 atm. The distal diameters were significantly smaller than middle and proximal diameters at all the pressures (P < 0.01). When compared to the distal diameter (100%, 4.9 ± 0.5 mm) at 10 atm, the distal diameters were 73% (3.6 ± 0.6 mm) at 3 atm, 88% (4.3 ± 0.5 mm) at 5 atm and 96% (4.7 ± 0.4 mm) at 8 atm. The distal diameter (4.1 ± 0.3 mm) at the maximum pressure manually applied was in between those at 3 and 5 atm. Conclusions: The distal diameter of the balloon increased significantly as a function of the pressure and most (88%) inflation occurred at a low pressure of 5 atm, which was sufficient to inflate the distal diameter of the balloon more than 3 mm. The manual pressurisation could inflate a balloon by as much as could be expected, at between 3 and 5 atm.

Original languageEnglish (US)
Pages (from-to)1573-1577
Number of pages5
JournalClinical Otolaryngology
Volume43
Issue number6
DOIs
StatePublished - Dec 2018
Externally publishedYes

Keywords

  • balloon catheter
  • dilation
  • Eustachian tube
  • otitis media
  • pressure

ASJC Scopus subject areas

  • Otorhinolaryngology

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