Extracting Respiration Rate from ECG Raw Signals

There are many respiration recording techniques and the choice is tied to the type of pathology given to study. Devices such as spirometers [3] and nasal thermocouples [4] measure air flow into and out of the lungs directly, carrying out careful and accurate measures. However, the devices can interfere with respiration. The breathing can also be recorded indirectly by measures of the variation of body volume. For this purpose, the transthoracic inductance and impedance plethysmographs [5], whole-body plethysmographs [6], strain gauge measurement of thoracic circumference and pneumatic respiration transducers are utilized. All these methods require dedicated devices too.

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