Cardiothoracic & vascular anaesthesia

Pre‒Cardiopulmonary Bypass Furosemide Administration and Intraoperative Urinary Oxygen Tension During Coronary Artery Bypass Surgery: A Prospective Observational Study

J Cardiothorac Vasc AnesthPublished Prospective observational study

Authors' conclusion

Pre-CPB furosemide administration was associated with a greater intraoperative reduction in PuO₂ during elective on-pump CABG, without significant differences in early postoperative renal outcomes.

Study context

Population
Adults undergoing elective isolated on-pump coronary artery bypass grafting (CABG) with preserved baseline renal function, tertiary cardiac surgery center
Participants
122 adults
Exposure
Pre-CPB furosemide vs no furosemide
  • Furosemiden = 66
  • No-furosemiden = 56reference
Outcome
Intraoperative urinary oxygen tension (PuO₂), measured at four predefined time points
Methodological detailssingle-center, pilot
  • Single-center
  • Pilot

Main finding

As reported in the abstract

PuO₂ · 20 minutes after CPB initiation

P < 0.001

Observational data: associations, not effects.

Further findings

PuO₂ · before ICU transfer

P < 0.001

Postoperative creatinine, urine output, AKI (KDIGO) incidence and in-hospital mortality · index hospitalization

Did not differ significantly between groups

Original publication

Pre‒Cardiopulmonary Bypass Furosemide Administration and Intraoperative Urinary Oxygen Tension During Coronary Artery Bypass Surgery: A Prospective Observational Study. J Cardiothorac Vasc Anesth. Published 30 August 2026. doi:10.1053/j.jvca.2026.08.170

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