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Updated: Mar 28, 2026

Employing the Forced Oscillation Technique for the Assessment of Respiratory Mechanics in Adults
Published on: February 9, 2022
"I sit to sleep"-Spirometry as a clue to diagnosis
Karin Yaacoby-Bianu1, Ron Shaul2,3, Anat Ilivitzki4
1Pediatric Pulmonology, Ruth Rappaport Children's Hospital, Rambam Health Care Campus, Haifa, Israel.
Abstract:
A 15-year-old patient presented with a 4-month history of choking while sleeping that necessitated sleeping in a sitting position. Flow-volume curve demonstrating fixed upper airway obstruction led to further workup and to the diagnosis of childhood achalasia as a cause of unusual symptoms and fixed upper airway obstruction. Pediatr Pulmonol. 2016;51:E13-E15. © 2015 Wiley Periodicals, Inc.
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