True regarding changes in respiratory system in pregnancy
Respiratory rate/min 15 15 UnaffectedVital capacity 3200 3300 Almost unchangedTidal volume (ml) 475 675 +40%Residual volume (ml) 965 765 -20%Total lung capacity 5000 4750 -8%
Respiratory rate increase
Vital capacity remains unchanged
Tidal volume increase
Total lung capacity increases
All India exam