Photoplethysmography-new applications for an old technology: a sleep technology review.

Unlabelled: Education is integral to the American Academy of Sleep Medicine (AASM) mission. The AASM Emerging Technology Committee identified an important and evolving piece of technology that is present in many of the consumer and clinical technologies that we review on the AASM #SleepTechnology (https://aasm.org/consumer-clinical-sleep-technology/) resource-photoplethysmography.

Knuckle cracking at night associated with sodium oxybate treatment.

During upward titration of a dose of sodium oxybate therapy for narcolepsy with cataplexy, a 25-year-old woman was observed by her husband to have new onset of knuckle-cracking and moaning behaviors during sleep ≥1 nights each week. The patient did previously occasionally crack her knuckles during the day (but never at night). These behaviors had not been evaluated by polysomnography.

There is more to an elevated bicarbonate.

Hadigal S, Ryals S, Wagner M, Berry R. There is more to an elevated bicarbonate. .