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: Pediatrics
[{'content': "A non ventilated preterm baby in incubator is under observation. Which is the best way to monitor the baby's breathing and detect apnaea ? \nSelect and explain. \nA. Infrared throraric movement study, B. Capnography, C. Nasal digital temperature monitoring, D. Impedence technique", 'role': 'user'}, {'content': 'Answer: D \nExplanation: The respiratory monitor based on impednace technique measures changes in the electrical resistance during breathing. The electrode is fixed on the chest wall to pick up signals which are displayed as respiratory rate.\nCapnography - lit is a simple non invasive method to assess arterial CO,.\nIt is used to assess the placement of ET tube in esophagus or trachea.', 'role': 'assistant'}]