Table 4– Pulse pressure (PP) measured at metabolic isotimes at baseline and 6 months
LVRS PPp-valueNon-LVRS PPp-value
50% VCO2
 Baseline46.0 (42.0–65.8)0.0374.0 (59.5–80.5)0.69
 6 months62.0 (49.0–79.0)57.0 (49.5–87.0)
75% VCO2
 Baseline68.0 (53.0–77.5)0.0285.0 (65.0–105.5)0.84
 6 months76.0 (64.0–89.0)78.0 (68.5–92.5)
100% VCO2
 Baseline81.0 (59.5–106.0)0.2089.0 (80.5–115.5)1.00
 6 months87.0 (71.0–115.0)99.5 (83.5–117.5)
  • Data are presented as median (interquartile range), unless otherwise stated. Comparisons are made within group (e.g. PP at 50% maximal carbon dioxide production (VCO2,max) for lung volume reduction surgery (LVRS) at baseline versus 6 months).