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 –
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)
Capnography
Impedence pulmonometry
Chest movement monitoring
Infrared end Tidal CO2 measurement