Neurologist, Sleep Medicine Physician (former Harvard Sleep Fellow). Adjunct Clinical Assistant Professor, McMaster University. Exciting sleep studies to share!

Toronto
Joined March 2022
Ran Richard Liu, MD, FRCPC, DABPN, CSCN (EEG), MSc retweeted
A huge thank you to everyone who attended our session on Sleep Wearables 💤🧠⌚️ & Circadian Rhythms: a new frontier in @ClinicalNeuroph at the #ICCN2026 Congress in beautiful Cartagena, Colombia! 🇨🇴
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Ran Richard Liu, MD, FRCPC, DABPN, CSCN (EEG), MSc retweeted
Another winning collaboration with @SleepyNeuroDoc at the #ICCN2026 🇨🇴 showing the power of sleep 💤🧠⚡️ in clinical neurophysiology to help improve the health and well-being of patients! @ClinicalNeuroph
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Ran Richard Liu, MD, FRCPC, DABPN, CSCN (EEG), MSc retweeted
Listen to Drs. Teshamae Monteith and Ran Liu, discuss his article on "Central Sleep Apnea" in the August #SleepNeurology issue. Episode available on all platforms or at hubs.la/Q04v4-Ww0 @headacheMD @SleepyNeuroDoc
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Ran Richard Liu, MD, FRCPC, DABPN, CSCN (EEG), MSc retweeted
Replying to @SleepyNeuroDoc
Key Point 5 from the article Central Sleep Apnea by Dr. Ran R. Liu, MD, FRCPC, MSc, from the August #SleepNeurology issue, which is available to subscribers at hubs.la/Q04r-nXL0. #NeuroTwitter #MedEd
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Ran Richard Liu, MD, FRCPC, DABPN, CSCN (EEG), MSc retweeted
Key Point 2 from the article Central Sleep Apnea by Dr. Ran R. Liu, MD, FRCPC, MSc, from the August #SleepNeurology issue, which is available to subscribers at hubs.la/Q04r-jfz0. #NeuroTwitter #MedEd
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Ran Richard Liu, MD, FRCPC, DABPN, CSCN (EEG), MSc retweeted
Key Point 3 from the article Central Sleep Apnea by Dr. Ran R. Liu, MD, FRCPC, MSc, from the August #SleepNeurology issue, which is available to subscribers at hubs.la/Q04r-trN0. #NeuroTwitter #MedEd
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Very excited to be at the SLEEP meeting in Indianapolis!! @SLEEP2023
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Anyone who is here, and wants to meet up for a coffee, please message me :)
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Ran Richard Liu, MD, FRCPC, DABPN, CSCN (EEG), MSc retweeted
Replying to @SleepyNeuroDoc
@SleepyNeuroDoc Using Twitter as means of collaborative sleep education.
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Ran Richard Liu, MD, FRCPC, DABPN, CSCN (EEG), MSc retweeted
Great work by @SleepyNeuroDoc to disseminate helpful sleep cases and data via Twitter @CanSleepSociety
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Ran Richard Liu, MD, FRCPC, DABPN, CSCN (EEG), MSc retweeted
“We know that almost all psychiatric conditions have some sleep component to them.” CAMH physiatrist Dr. Michael Mak (@mak_mike) joined Dr. @DavidGratzer on #QuickTakes to discuss his work treating sleep disorders. 🔊LISTEN: bit.ly/3ouRQoa
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I’m so excited to be at the Canadian Sleep Society conference in Ottawa!!! #CanadianSleepSociety #CSS
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Thank you everyone for the overwhelming support in completing this survey!! 🙌 If you have not yet completed this survey, I would really appreciate it if you could do so to help me improve this educational Twitter.
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Vagus Nerve Stimulation induced respiratory changes in patient with epilepsy + OSA, "pseudo-periodic breathing"! Titration PSG, 5 min epoch. VNS stimulation results in elevated chin tone, increased breathing rate, lowered airflow and breath effort and no desaturation. #VNS #apnea
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CPAP compliance data show vagus nerve stimulation induced respiratory changes in patient with epilepsy + OSA. Residual AHI =11.8, but on waveform inspection, this is all due to #VNS stimulation, and the cycle of each event perfectly matches the duty cycle of the VNS stimulation
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VNS in some patients can induce or worsen hypopneas / apneas, which can be obstructive or central. At first glance, this looked like periodic breathing, but it is actually induced by VNS. In complex cases, this highlights the importance of compliance waveform data. #OSA #epilepsy
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Great point! Adult patients that can objectively sleep for >9hr is a massive flag. Suggest possible sleep pathology resulting in long sleep duration but poor quality of sleep… and need further investigation!
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Ran Richard Liu, MD, FRCPC, DABPN, CSCN (EEG), MSc retweeted
#obstructive sleep apnea: Finally a randomized study of hypoglossal nerve stimulation for #OSA published in JAMA Otol. congrats to co-authors. pivotal study ongoing. #ucsd #sleep #livanova @atscommunity #ATS2023 pubmed.ncbi.nlm.nih.gov/3702…
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Female in 60s, Hx of minor stroke, BMI 21, presenting with insomnia + excessive daytime sleepiness, ESS 19. PSG: severe NREM dominant OSA, AHI 37 (NREM 39, REM 5). 1st started CPAP + stimulus control + no napping. Then added gentle sleep restriction + hypnotic medication. #COMISA
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With interventions, the patient's, insomnia and total sleep time improved. Excessive daytime sleepiness resolved #COMISA is very challenging, this is just one approach. MUST treat both #OSA and #insomia! If you have another approach, please share!
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In addition to treating sleep apnea (CPAP, oral appliance, etc) and providing CBT-insomnia for patients with COMISA, are there times that you would prescribe a hypnotic medication for selected patients with COMISA?
89%Yes
11%No
9 votes • Final results
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