Anaesthesia After Hyperventilating for some time holding the breath is dangerous because – A Decrease CO2 shift the O2 dissociation curve to the left B Alkalosis can lead to tetany C It can lead to CO2 Narcosis D Due to lack of stimulation by CO2, anoxia can go into dangerous levels 💡 Explanation After Hyperventilating for some time holding the breath is dangerous because – ✓ Correct Answer: D. Due to lack of stimulation by CO2, anoxia can go into dangerous levels