Impedance pneumography

The three main categories of respiratory rate monitoring are impedance pneumography, inductive plethysmography, and piezoresistive monitoring. 

Milano SP, Bpry C., Boucheix O, Lot I, Dupuis C, Mooti B (2011) Assessment of thOTacic impedance pneumography telemetry to ambulatory and restrained respiration measurement standards in the dog. Eighth Annual Focused Issue on Methods in Safety Pharmacology 64(1) e56... 

Development of Portable Device to Measure Respiratory Activity Based on Impedance Pneumography... 

Abstract— This paper describes the development of a portable device to register the respiratory activity based on the impedance pneumography method. The core of the system is the analog Front-End ADS1292R of Texas Instrument , which incorporates all necessary stages for performing the measurement of the respiratory activity. The developed device includes a Bluetooth transmission for sending data to mobile phone or Personal Computer (PC). The system was tested with a multiparameter patient simulator and also with a healthy subject. 

The Respiratory Aetivity (RA) is a very important bio-medieal signal however, it is not eommonly monitored. Through the analysis of RA is possible to detect diverse respiratory pathologies, sueh as asthma, ehronie obstructive pulmonary disease (CORD) and sleep apnea-hypopnea syndrome. Nowadays, different methodologies exist, direct and indirect, to RA measurement. One of the methods is based on the Impedance Pneumography (IP), which is an indirect technique for continuous and dynamic measurement of respiratory volume [1]. The IP is a specialized type of impedance plethysmography (IPG). 

This paper is structured in the following way. Section 11 explains the operating principle of impedance pneumography method. Section 111 describes the implementation of the device hardware. Section IV shows the acquisition and validation of the respiratory signals. Finally, section V presents the results and conclusions. 

Pacella A F. (1966) Impedance pneumography—a survey of instm-mentation techniques, Med. Biol. Eng., 4,1—15. 

Sim M. H., et al. (2013) Development and Evaluation of an Improved Technique for Pulmonary Function Testing Using Electrical Impedance Pneumography Intended for the Diagnosis of Chronic Obstmc-tive Pulmonaiy Disease Patients, Sensors, 13(11), pp. 15846-15860... 

Grenvik A, Ballou S., McGinly E., et aL (1972). Impedance pneumography Comparison between chest impedance changes and respiratory volumes in 11 healthy volunteers. Chest, vol. 62, pp 439-443. 

Gupta A K. (2011) Respiration Rate Measurement Based on Impedance Pneumography, Texas Instruments apphcatirm report SBAA181. 

---