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Doctor insights on: Lark Sleep Monitor

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Dr. Heidi Fowler
5,064 doctors shared insights

Sleep (Definition)

Sleep is a topic that involves concepts such as how long it takes to fall asleep, how many times one wakes up at night, how many hours one sleeps at night, sleep stages, ...Read more


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Always tired. Fitbit tracker says low sleep efficiency. Videotape confirmed constant tossing during sleep. Should I do a sleep study? Recommended tx?

Always tired. Fitbit tracker says low sleep efficiency. Videotape confirmed constant tossing during sleep. Should I do a sleep study? Recommended tx?

Consult sleep clinic: Good sleep helps you feel healthy and vital. Sleep apnea (frequent awakenings due to low oxygen levels during sleep) can increase your risk of high blood pressure, heart rhythm problems, and even obesity! so consult a sleep doctor. If necessary, they will recommend a polysomnographic exam where they monitor your vital signs, movements, oxygen levels, and video your sleep in an overnight sleep lab. ...Read more

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Home sleep study said moderate sleep apnea w/severe oxygen saturation <70 & in-clinic study said no sleep apnea & perfect oxygen levels. Which right?

Home sleep study said moderate sleep apnea w/severe oxygen saturation <70 &  in-clinic study said no sleep apnea & perfect oxygen levels. Which right?

My reaction: Advise you to sit down with your doctor and go over both studies in full detail, as one of these is clearly WRONG. Although I would favor a clinic outcome due to presence of skilled personnel, I cannot clarify the outcomes from this perspective. Good luck with this. ...Read more

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Completed sleep study and have mild sleep apnea. Oxygen recorded during sleep 86%. Will a CPAP machine help ease my high rate of PVCs (20,000) a day.

Completed sleep study and have mild sleep apnea. Oxygen recorded during sleep 86%. Will a CPAP machine help ease my high rate of PVCs (20,000) a day.

CPAP and PVCs: Hi Derrick, there is data that demonstrates that CPAP usage does decrease the number of PVCs, but this was only in patients diagnosed with heart failure. Keep in mind that regular CPAP usage should improve any current symptoms related to sleep apnea such as day time fatigue and will also prevent long term complications such as pulmonary hypertension. Hope this helps! ...Read more

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Have ob apnea, use cpap nightly. Fatigue persists! could not nap for mslt. Rem sleep from 6-7am in overnight study. Rem interruption in am = fatigue?

Have ob apnea, use cpap nightly. Fatigue persists! could not nap for mslt. Rem sleep from 6-7am in overnight study. Rem interruption in am = fatigue?

Consider Nuvigil: For patients with ongoing sleepiness in spirited of cpap, Nuvigil is usually the next recorded treatment. It only occasionally raises blood pressure, but you should have it checked if you start on it. Good luck to you. ...Read more

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Tegretol 400-klonopin1.5-effient 10 all at 10pm fragmented poor sleep.Added half of a unisom 12.5 at 11:00 sleep great..Wake at 7 am refreshed--ok?

Tegretol 400-klonopin1.5-effient 10 all at 10pm fragmented poor sleep.Added half of a unisom 12.5 at 11:00 sleep great..Wake at 7 am refreshed--ok?

No: Tegretol and unisom: interaction number of reports 1 premature baby 12 2 drug exposure during pregnancy 12 3 persistent foetal circulation 12 4 amnesia 11 5 intraventricular haemorrhage 11 6 ventricular septal defect 11 7 patent ductus arteriosus 11 8 atrial septal defect 11 9 lung disorder 8 10 cardiopulmonary failure 8. ...Read more

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Home O2 monitor consistently records 17-30 hypopnea/hr at night but GP still won't refer as 'looks fine-no apnoea'! Persist y/n? In UK, v. frustrated!

Home O2 monitor consistently records 17-30 hypopnea/hr at night but GP still won't refer as 'looks fine-no apnoea'! Persist y/n? In UK, v. frustrated!

Hypopnea: If you are not happy with the explanation of your GP, find a new one or ask to see a sleep specialist, as 17-20 apnea/hypopnea index is not a normal number to see in the USA for our recordings. ...Read more

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In hosp for asthma on monitr brief ventricular tachycardia, overnight on monitor intermittent periods cardiac ectopy staying another night, concerning?

In hosp for asthma on monitr brief ventricular tachycardia, overnight on monitor intermittent periods cardiac ectopy staying another night, concerning?

Always but....: Part of your problem may be from over-stimulation from the beta agonist (brochodilator) use , plus possibly oxygen lack and adverse effects from large dose of steroid given. But any arrhythmia especially ventricular tachycarida is of concern and you need a cardiologic evaluation after your asthma gets under control. ...Read more

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4 yr old had sleep study that showed decreased REM sleep &frequent wakings &arousals (7.5 per/hr).She also snores, sleep talks &walks, wets bed.Causes?

4 yr old had sleep study that showed decreased REM sleep &frequent wakings &arousals (7.5 per/hr).She also snores, sleep talks &walks, wets bed.Causes?

Sleep disorder: Although there is an entity called central sleep apnea (central nervous system, brain) the most common cause of a sleep disorder in a 4 year old is hypertrophy (enlargement) of the tonsils and adenoids. Removal of these structures in the upper airway almost always results in a cure of these symptom. ...Read more

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Not sleeping through night. Sleep about 4 hours, rest of night half awake. Resting heart rate 103. Thyroid?

Not sleeping through night. Sleep about 4 hours, rest of night half awake. Resting heart rate 103. Thyroid?

Possibly: There are many conditions that can elevate resting heart rate and interfere with sleep, from benign to concerning. Please see your primary care provider to get evaluated to identify cause and treatment. ...Read more

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What are "periodic breathing" and "AHI" in regards to Obstructive Sleep Apnea?

What are "periodic breathing" and "AHI" in regards to Obstructive Sleep Apnea?

Sleep Study terms: Periodic breathing: is a respiratory pattern of young infants during the first few weeks of life and is due to “immaturity.” The Apnea Hypopnea Index (AHI) is an air flow decrease 70% for at least 10 seconds with persistent respiratory effort. ...Read more

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Is bedtime at 9:30-10pm and wake time at 6am considered an advanced circadian rhytim? Nice opinion, please.

Is bedtime at 9:30-10pm and wake time at 6am considered an advanced circadian rhytim? Nice opinion, please.

Sounds normal: No, that is pretty normal. We are built to become sleepy when it is dark, and awake when the sun is out. A bed time between 10-11 and wake time 6-7 is very common, and probably in the middle of average for the human rhythm. It is often manipulated though, with people staying up later intentionally. In cloudy and dark climates, one may feel more sleepy, especially during winter ...Read more

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Do sleep apps that use a cell phone's accelerometer work? If so, what is the best iphone app for monitoring sleep?

Do sleep apps that use a cell phone's accelerometer work?  If so, what is the best iphone app for monitoring sleep?

Yes, they do: Renew sleepclock, sleep cycle, sleep tracker, sleep viewer, sleep analyzer. These are reviewed at www.Myarticle.Com/computers/software/sleep-monitor-a... Sleep monitor – top 5 iphone sleeping apps. ... Using the accelerometer in your iphone sleep cycle is able to monitor your movements during sleep. ...Read more

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Would a 24 hour at home EEG show signs of sleep apnea?

Would a 24 hour at home EEG show signs of sleep apnea?

Yes, but...: There are eeg changes associated with obstructive sleep apnea, but to completely diagnose osa and know what is needed to treat it, you need to be monitoring oxygen levels while sleeping. ...Read more