<unk><unk>  is a portable monitor that records similar information to a polysomnogram. The results of<unk><unk>  are not diagnostic, but may determine the need for polysomnography to either confirm or rule out<unk><unk> .
Sleep apnea home oximetry
Sleep apnea echocardiography or ultrasound
Sleep apnea polysomnography
Sleep apnea CT
Asthma electrocardiogram
Sleep apnea MRI
Sleep apnea other diagnostic studies
Chronic bronchitis electrocardiogram