Sleep Fragments

A Quiz on Tracings 

Sleep Tracings is a monthly feature sponsored by the Respiratory Neurobiology and Sleep Assembly. Each tracing is in a question/answer format and is designed to test members' expertise in sleep medicine and polysomnography. The tracings may represent physiologic events, abnormal events, artifacts and sleep disorders. Tracings will come from both the adult and pediatric populations. Please come back each month for a new tracing. 

If you have a sleep tracing, sleep log or hypnogram that you would like to contribute, please contact Section Editors, Susheel Patil, MD, PhD (spatil@jhmi.edu) or Malcolm Kohler, MD (malcolm.k@bluewin.ch).

Guidelines for content and submission of Sleep Fragments can be found here. It is important that all submissions follow these guidelines to minimize delays in the review and publication process

• A young boy with staring episodes and snoring
• A 19 year-old female with sleep onset insomnia
• The sleepy driver
• A toddler with breathing difficulty during sleep
• 25-year-old man with occasional apneas and unrefreshing sleep
• Vital Signs: What is the Arrhythmia?
• Can you determine which medication a patient is taking?
• A Man is Unable to Sleep in Bed
• The oximetry tracing tells it all
• Two head scratchers: What's causing the leak?
• Not all sleep-disordered breathing is the same
• Do you have an eye for detail?
• Fluttering on a flow volume loop
• Electrode that goes pop in the night
• Sleep disorder during summer holidays
• Sleep disorder diagnosed during wakefulness
• Fun With Filters
• Electrical Artifact
• A man with history of multiple nocturnal awakenings from sleep
• What is the Arrhythmia?
• Apnea or Hypopnea?
• Circulation Time and Sleep-Disordered Breathing
• Is this patient with OSA using his CPAP?
• Obstructive Sleep Apnea in a Patient with "Idiopathic" Dilated Cardiomyopathy. Effects of 10 years of CPAP.
• A 2-month-old who stops breathing during sleep
• Fun with differential amplifiers
• 32-year-old obese woman with snoring
• Arousal triggered respiratory event
• A Patient Making Noise at Night
• Waxing and Waning Breathing
• A patient with decreased respiratory effort
• A patient with muscle weakness and nocturnal desaturation
• A patient with unrefreshing sleep
• Pediatric Sleep Tracings - What is real?
• Scoring of Leg Channel Events
• Look at the snore channel
• Does this man snore?