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
A non ventilated preterm baby in the incubator is under observation. Which is the best way to monitor the baby's breathing and detect apnea – 
Select and explain. 
A. Capnography, B. Impedence pulmonometry, C. Chest movement monitoring, D. Infrared end Tidal CO2 measurement
B: Impedence pulmonometry
Answer: B: Impedence pulmonometry 
Explanation: Monitoring Respiration
1. Intubated Patient          

Capnography
Infrared End Tidal CO2 measurement

2. Non- Intubated Patient

Impedance pulmonometry
Pulse oximetry
Transcutaneous gas analysis. (only effective in infants d/t thin skin)