This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anaesthesia
Curare notch seen in capnograph is due to 
Select and explain. 
A. Carbon dioxide rebreathing, B. Bronchospasm, C. Spontaneous breathing, D. Valve malfunction
C: Spontaneous breathing
Answer: C: Spontaneous breathing 
Explanation: With return of spontaneous ventilation, curare notch is seen in capnograph.