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Clin Otolaryngol. 2018 Dec;43(6):1573-1577. doi: 10.1111/coa.13218. Epub 2018 Sep 12.

Fluoroscopic balloon diameter measurement at different pressures during Eustachian balloon dilation.

Author information

1
Department of Otorhinolaryngology-Head and Neck Surgery, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea.
2
Department of Otorhinolaryngology-Head & Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
3
Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
4
Department of Radiology, Chonbuk National University Hospital, Jeonju, Korea.

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.

KEYWORDS:

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

PMID:
30160368
DOI:
10.1111/coa.13218
[Indexed for MEDLINE]

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