According to textbooks - Bain circuit is contraindicated for spontaneous ventilation. With Bain circuit, valve half closed — patients pCo2 increases to 60. At 60 pCo2 - Respiratory Center gets stimulated and patients start breathing normally. High pCo2 Of 60 shrinks the turbinates and increases the volume of The airways as a natural protective phenomenon This is the reason for good improvement, after bain circuit is used. pCo2 should be monitored and maintained at 60.
At higher pCo2 above 70-80 Carbon dioxide Narcosis set in and respiratory drive comes down. This is the key factor working in COVID-19 scenarios. CO2 is that this gas has many important functions in your body. For example: Antibacterial. A study at the Karolinska Institute in Sweden showed that the growth of staphylococci was 1,000 times higher when the bacteria were exposed to normal air for 24 hours, compared with…
