Anaesthesia Size in < 6 years old child, of endotracheal tube is A Age +3.5/3.5 B Age +2.5/2.5 C Age + 4.5/4.5 D Age -4.5/4.5 💡 Explanation Size in < 6 years old child, of endotracheal tube is ✓ Correct Answer: A. Age +3.5/3.5