By Rick Swanson, RPSGT, CRTT A sensor or electrode acts as a transducer by taking one form of energy and converting it to another form of energy (i.e., a signal that is put into sleep data recording systems). A snore sensor takes the vibrations of snoring and produces an electrical signal of that vibration. Similarly, a pressure transducer measures the pressures of breathing … [Read more...] about Understanding Pressure Transducers and Pressure Flow Signals
hypopneas
Comparison of Two Limited-Channel Systems for the Diagnosis of Sleep Apnea/Hypopnea in the Home – Philip R. Westbrook, Michael J. Dickel, Dennis Nicholson, Daniel J. Levendowski, Timothy Zavora, Vladimir Simeunovic and Roy Dalati
Philip R. Westbrook, MD, Michael J. Dickel, PhD, Dennis Nicholson, MD, Daniel J. Levendowski, MBA, Timothy Zavora, BS, Vladimir Simeunovic, BS and Roy Dalati, BS Abstract Objective: To compare two commercially available limited channel systems utilizing in-home self-applied recorders to each other and to standard in-laboratory attended nocturnal polysomnography (PSG) for … [Read more...] about Comparison of Two Limited-Channel Systems for the Diagnosis of Sleep Apnea/Hypopnea in the Home – Philip R. Westbrook, Michael J. Dickel, Dennis Nicholson, Daniel J. Levendowski, Timothy Zavora, Vladimir Simeunovic and Roy Dalati