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May 20, 2026American Journal of Respiratory and Critical Care Medicine

C21-08 Acetazolamide to Prevent Ventilatory Drive Withdrawal in REM Sleep Apnea: A Randomized Controlled Trial

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Authors

LML MessineoMKM KimAAA Azarbarzin

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Overview

Randomized trial shows acetazolamide reduces apnea hypopnea index in individuals with REM sleep apnea, indicating its potential therapeutic role.

Key Points

  • This study aims to evaluate the effect of acetazolamide on REM-predominant obstructive sleep apnea severity and underlying physiological mechanisms.
  • Randomized, crossover, double-blind design with 11 participants allocated to acetazolamide or placebo.
  • Community participants with REM-predominant OSA were assessed using polysomnography for apnea hypopnea index and hypoxic burden.
  • Detailed physiological measurements included diaphragm and genioglossus electromyography following each intervention.
  • Acetazolamide reduced apnea hypopnea index by 35.5% and hypoxic burden by 35.9% vs. placebo (P < 0.001).
  • Acetazolamide did not reduce dips in ventilatory drive (P = 0.8) but increased collapsibility and muscle responsiveness (P < 0.001).
  • Increased ventilation at eupneic drive by +1.4 L/min and raised muscle responsiveness in genioglossus (P = 0.001).

Cite This Study

Messineo et al. (2026) studied this question.

synapsesocial.com/papers/6a0d5132f03e14405aa9da06https://doi.org/10.1093/ajrccm/aamag162.6401
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Acetazolamide to prevent ventilatory drive withdrawal in REM sleep apnoea: a randomised controlled trial2026 · 1 citations
  2. 2C76-08 Efficacy of Carbonic Anhydrase Inhibitors for Sleep Disordered Breathing2026
  3. 3Effects of acetazolamide on sleep-disordered breathing in pulmonary vascular disease (RCT)2024
  4. 4C21-10 Acetazolamide Ameliorates Breathing Instability in Opioid-associated Sleep Disordered Breathing2026
  5. 5Acetazolamide Mitigates Opioid-Associated Sleep-Disordered Breathing2026