End-tidal CO2 monitoring in mitral stenosis patients undergoing closed mitral commissurotomy.
Arterial to end-tidal carbon dioxide difference (P(a-E')CO2) was recorded in 20 mitral stenosis patients (group A) for closed mitral commissurotomy and 20 healthy individuals (group B) for elective limb surgery. Mitral stenosis patients showed a greater difference than group B patients. Repeated measurements of P(a-E')CO2 in mitral stenosis patients at various stages of closed mitral commissurotomy not only showed a mean increase from before thoracotomy but there was also no correlation between P(a-E')CO2 before thoracotomy with that after thoracotomy, after commissurotomy or after chest closure. This indicated that end-tidal CO2 monitoring was unsuitable to measure adequacy of ventilation during closed mitral commissurotomy.
Puri
G D
GD
Post Graduate Institute of Medical Education and Research, Chandigarh, India.
Venkatraman
R
R
Singh
H
H
D000328:Adult; D001944:Breath Tests; D002245:Carbon Dioxide / Q000032:analysis* / Q000097:blood; D006801:Humans; D008943:Mitral Valve / Q000601:surgery*; D008946:Mitral Valve Stenosis / Q000378:metabolism* / Q000601:surgery; D016343:Monitoring, Intraoperative; D014692:Ventilation-Perfusion Ratio
D002245:Carbon Dioxide