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June 4, 2026Annals of Vascular DiseasesOpen Access

Oral beraprost linked to refractory ventilator weaning failure from recurrent hypoxemia in extensive atelectasis.

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Why the study?

The role of the oral prostacyclin analog beraprost sodium in ventilator weaning failure has not been widely described.

Does oral beraprost induce ventilator weaning failure in patients with severe pre-existing ventilation-perfusion mismatch?

Population

One 90-year-old man with extensive atelectasis and critical limb ischemia

Comparison

Oral beraprost administration, discontinuation, and reintroduction

Design

Case report

Key result

Oral beraprost induced recurrent hypoxemia and tachypnea in a patient with extensive atelectasis, leading to refractory ventilator weaning failure that resolved upon drug discontinuation.

Authors

MOMasato ObayashiSFShoji FukudaAIAkinari Iwahori

Discussion

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Member takes

Overview

Suggests beraprost may contribute to weaning failure in atelectasis; single-case observation leaves causality and generalizability open.

Key Points

  • To explore the association between oral beraprost use and ventilator weaning failure in a patient with critical limb ischemia.
  • Case report of a 90-year-old man
  • Administered oral beraprost for critical limb ischemia
  • Monitored ventilator weaning attempts and associated respiratory events
  • Patient experienced recurrent tachypnea and hypoxemia during weaning on beraprost.
  • Symptoms resolved after stopping beraprost, reappeared upon reintroduction.
  • Implicates a potential link between beraprost use and ventilator weaning failure in patients with ventilation–perfusion mismatch.

Study Design

Type

Case Report (n=1)

Structured PICO

Does oral beraprost induce ventilator weaning failure in patients with severe pre-existing ventilation-perfusion mismatch?

P
Population
A 90-year-old man with critical limb ischemia and extensive atelectasis who developed refractory ventilator weaning failure while receiving oral beraprost.
E
Exposure
Oral beraprost
O
Outcome
Ventilator weaning failure (recurrent hypoxemia and tachypnea)safety

Oral beraprost may contribute to recurrent hypoxemia and tachypnea in patients with severe pre-existing ventilation-perfusion mismatch, leading to ventilator weaning failure.

Limitations

  • Single case report
  • Formal physiological assessments were not performed to determine the exact underlying mechanisms

Cite This Study

Obayashi et al. (2026) conducted a case report in Ventilator weaning failure (n=1). Beraprost sodium was evaluated on Resolution of ventilator weaning failure upon dechallenge. Oral beraprost induced recurrent hypoxemia and tachypnea in a patient with extensive atelectasis, leading to refractory ventilator weaning failure that resolved upon drug discontinuation.

synapsesocial.com/papers/6a211591d499ed480b16eb0ahttps://doi.org/10.3400/avd.cr.25-00140
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