Figure 4.
Tracking treatment effects in a patient with complex/treatment-emergent sleep apnea. M1 (home) recording in the same participant as Figure 5 now treated with CPAP, low-dose acetazolamide, and a nonvented mask. Note the marked increase in HFC, consistent with stable breathing periods resulting from improved control of sleep apnea, and absence of e-LFCNB. Act = trunk actigraphy, g/second = Gravitational acceleration units/second; FREQ = frequency in Hz; Quality = ECG signal quality; SNORE = snoring vibration estimated by the accelerometer.