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Study identifier: NCT07199881 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

Assessment of Respiratory Drive and Inspiratory Effort Across Pressure Support Levels in Patients After Major Abdominal Surgery

Condition: Inspiratory Effort · Mechanical Ventilation · Major Abdominal Surgeries  ·  Sponsor: Mahidol University

PhaseNA
Planned participants40
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

This physiological observational study will assess respiratory drive and inspiratory effort across varying levels of pressure support ventilation (PSV) in adult surgical ICU (SICU) patients after major abdominal surgery. By using non-invasive bedside indices (airway occlusion pressure at 100 ms after the onset of inspiration \[P0.1\], maximum negative occlusion pressure \[Pocc\], and pressure muscle index \[PMI\]), we aim to quantify how patients adapt to changes in ventilatory support and determine patterns of under- and over-assistance. Findings may inform optimal titration of PSV to reduce complications and improve clinical outcomes.

This description comes directly from the study's public registry record.

Talk to the study team

Nuanprae Kitisin, MD  ·  +66896767706  ·  nuanprae.kit@mahidol.ac.th

Nattaya Raykateeraroj, MD  ·  +66993519963  ·  nuanprae.kit@mahidol.ac.th

Always discuss trial participation with your own doctor first.

Locations (1)

Faculty of Medicine, Siriraj Hospital, Mahidol UniversityBangkok, Bangkoknoi, ThailandRecruiting

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Source record: clinicaltrials.gov/study/NCT07199881