18: A Comparison of Capnographic Waveform Indices and Peak Flow Meter in the Monitoring of Asthmatic Patients in Emergency Departments

A personal device for analyzing carbon dioxide in real time and real breath: Experimental investigation and computational simulation

“…About 10 million Americans have been diagnosed with COPD and another ∼20 million with asthma [5,6]. Breath carbon dioxide analysis is a well-known method that measures the breath CO 2 level, which is proportional to the partial pressure of CO 2 dissolved in blood [7][8][9][10][11][12]. The method is popular, effective and widely used to diagnose and evaluate the states of COPD and asthma, however, most of the current CO 2 equipment are based on infrared detection, which requires collecting breath samples with a pump, sample treatment to reduce interference from high breath humidity [13], and frequent calibration originated from signal drift.…”