Oxygen Monitor for Baby – Frequent Q&A for New Parents

Oxygen Monitor for Baby – Frequent Q&A for New Parents

Oxygen monitors for babies especially for newborns are thought to give peace of mind to parents. Do you know why?

Compared to adults, the respiratory status of newborns requires close attention. If a newborn is found to have hypoxia during delivery, it is even more important to monitor the blood oxygen status closely after the baby is discharged from the hospital. That is to avoid severe hypoxia from occurring and affecting the normal development of the baby. So new parents are worried to check for their baby’s breath all night. Then the oxygen monitor for baby is bought by new parents at home to monitor the infant’s blood oxygen levels and heart rate and to sound alarms when detecting abnormalities.

Wellue has launched their innovative product BabyO2 S2 baby oxygen monitor to ease parents’ worries. In addition, Wellue health editors searched some frequent questions and answers for new parents encountered as follows, and we hope this can be helpful.

1. Manifestations of neonatal hypoxemia

The main manifestations of neonatal hypoxia are:

① Increased or decreased respiratory rate;

The criteria for increased respiratory rate are: in the condition of calm without oxygen, (less than 2 months of age) ≥ 60 breaths/min, (2 months of age – 12 months of age) ≥ 50 breaths/min.

② Over deep or shallow breathing: infants or newborns may show open-mouth breathing, moaning, grunting sound, nasal flaring, head bobbing;

③ Purple or gray lips and face;

④ Concave chest, etc.

 3. How do you perform a pulse oximetry measurement?

The pulse oximetry probe is wrapped in a wrap around the baby’s right hand or one foot. The probe is connected to a monitor that displays the oxygen levels, just like the Wellue BabyO2 S2 baby oxygen monitor. The Owlet smart sock doesn’t have a single monitor to screen because they use the phone APP. See more details about BabyO2 S2 VS Owlet Sock.

Just bundle the oxygen probe on the baby’s dorsal foot, this location is relatively rich in arterial blood flow. Because the newborn body movement will affect the oxygen measurement, you can use a strap to tie the probe data cable at the ankle to fix it, reducing the role of sensor shaking, and then to monitor the baby’s blood oxygen status for a long time. See multiple ways to wear baby oxygen monitor.

When the baby is calm and warm, it takes only a few minutes to obtain a reading. The number will take longer to obtain if the infant is crying, hypothermic and wet.

4. Why is the pulse oximetry method used to screen CHD (congenital heart disease)

Pulse oximetry can be used to determine the oxygen level in the blood and has been used to monitor the oxygen level in the blood of infants in special monitoring.

It can also indicate the infant’s cardiopulmonary function. Pulse oximetry can also help identify infants with severe congenital heart disease, infections and pneumonia. Infants with severe congenital heart disease, infections and pneumonia often have very low oxygen levels in their blood. If the newborn fails the screening test, the medical workers should use an echocardiogram to complete further diagnosis.

If the newborn fails the screening test, the provider should use an echocardiogram to complete further diagnosis.

 5. What is CHD

Congenital heart disease is a problem with the structure of the heart or the flow of blood through the heart. Congenital heart disease is the most common birth defect and is often asymptomatic in the newborn period.

6. How is congenital heart disease (CHD) monitored?

Before a newborn is discharged from the hospital, the hospital should check:

  • The infant’s heart murmur
  • Abnormal heart rate, breathing or blood pressure

Pulse oximetry can detect low oxygen levels in the blood. Children with critical precocious heart disease are often asymptomatic after birth. However, if the infant has any of these symptoms, further testing should be performed.

7. Will pulse oximetry or baby oxygen monitor hurt my baby

No. It is a painless and non-invasive method.

8. What is the normal reading

For oxygen saturation in the baby’s foot:≥ 95%;

Infants with abnormal function or infection have low oxygen saturation readings. Sometimes low pulse oximetry caused by birth crush is normal. Your child’s physician may also do additional oxygen saturation measurements for the baby.

For resting heart rate (pulse rate):

  • Newborns 0 to 1 month old: 70 to 190 beats per minute
  • Infants 1 to 11 months old: 80 to 160 beats per minute
  • Children 1 to 2 years old: 80 to 130 beats per minute
  • Children 3 to 4 years old: 80 to 120 beats per minute
  • Children 5 to 6 years old: 75 to 115 beats per minute
  • Children 7 to 9 years old: 70 to 110 beats per minute
  • Children 10 years and older, and adults (including seniors): 60 to 100 beats per minute
  • Well-trained athletes: 40 to 60 beats per minute

9. Is it possible for an infant with severe congenital heart disease to have a normal pulse oximetry reading

It is possible. Watch for the following symptoms in your child.

  • Difficulty in breastfeeding
  • Sweating around the head (especially while breastfeeding)
  • Shortness of breath
  • Pale or bluish skin
  • Lethargy and immobility
  • Swollen face, arms and legs
  • Irritable or difficult to calm

10. Premature baby and newborns in the NICU (neonatal intensive care unit)

    Although pulse oximetry monitoring is usually part of daily management for preterm infants and the baby is observed for a longer period of time than other infants without signs of congenital heart disease, some forms of congenital heart disease may go undetected in the NICU.

    Routine care in the NICU does not usually involve blood gas tests for oxygen saturation measurements, raising the possibility of missed screenings.

    For those infants who do not have an echocardiogram, quantitative pulse oximetry screening should be performed as soon as assisted oxygenation is terminated. If the infant has already had an echocardiographic screening, no additional pulse oximetry screening is required.

    Baby Monitor Comparisons – Wellue BabyO2 S2 VS Owlet Smart Sock

    Baby Monitor Comparisons – Wellue BabyO2 S2 VS Owlet Smart Sock


    This article made a comparison between Owlet and BabyO2 S2.

    Baby oxygen monitor now is thought to be a useful bedtime helper that brings peace of mind to new parents or caretakers. The innovative baby monitor continuously tracks oxygen levels and heart rates and sends alarms when abnormalities are detected. The responsibility of knowing whether your baby is okay when the lights go out always makes parents anxious and sleep not well because they have to take up to check the baby’s breath many times. Then the baby breath monitor with alarms actually eases their worried minds since once there is amiss, parents will receive alarms and can make an instant response.

    So is there any trustable baby oxygen monitor brand in the market? Now the Owlet Smart Sock 3 and Wellue BabyO2 S2 are chosen by many new moms. We are going to compare these two brands from some aspects as follows.

    five star rating illustration5 star

    • Continuous body movement, pulse rate and oxygen tracking
    • Real-time data on the monitor device, base station and phone APP, can monitor without phone
    • Notifications from alarm base station and phone APP
    • Mobile sleep reports
    • Built-in memory to save recordings
    • No Wi-Fi setting requirement
    • Safe, soft and non-slip wraps
    four-half-star-rating-illustration4.5 out of 5

    • Heart rate and oxygen tracking
    • Real-time data on the phone
    • Notifications from the base station
    • Mobile sleep circle analysis
    • Wifi requirement
    • No backup memory
    • Wearable socks

    #1 What’s in the Box

     BabyO2 S2:

    • Wellue BabyO2™ S2 baby oxygen monitor foot: main device + Wraps + oximetry sensor cable
    • Base station
    • Stitched soft wraps in different sizes (0-3 years old)
    • Split wraps in different sizes (0-3 years old)
    • Pulse oximetry sensor cable
    • Personalized sticker
    • User guide in 5 languages
    • Charging base station for the base station
    • Type-C charging cable for the station
    • Data/Charging cable for BabyO2 S2 main device
    • Quick guide for split wraps
    • 1-year warranty
    Owlet smart sock package
    Owlet Smart Sock 3:

    • 3 Owlet socks (sizes 0–18 mos.)
    • Sensor
    • Base station
    • Charging cords
    • Setup instructions
    • Quick reference guide
    • Warranty

    #2 Pricing and Guarantees

    Common pros:

    • One-time purchase
    • No contracts; no monthly subscription or long-term contract
    • Peace of Mind guarantee


    Compared with the Owlet brand, the BabyO2 S2 baby breathing monitor is more economical.

    #3 Tech and Equipment

      BabyO2 S2 Owlet Smart Sock 3
    Bluetooth Connection Bluetooth connection between the monitor device, base station, APP Wi-Fi connection between the sock and APP, Bluetooth connection between the sock and the base station
    Be monitored in 2 different houses A Bluetooth range of up to 10 feet A Bluetooth range of up to 100 feet
    Battery life 16 hours for the monitor device, 7 days for the base station 16 hours for the sock
    Backup memory/ Built-in memory Yes, the monitor main device can save recordings automatically (4 sessions, up to 10 hours for each) and can be synchronized to an APP after being connected with the phone. No, only use the phone to record data
    BabyO2 S2 Pros:

    •  The medical-grade accurate oximetry sensor
    •  Real-time data on the 3 screens: main device, base station, phone APP dashboard
    •  Review the history data and oximetry analysis on the APP dashboard
    •  Receive alarms from the base station & APP
    •  Monitor and base station can be used independently without the phone

    Owlet Pros:

    • See real-time data and sleep report only on the phone
    • Receive alarms from the base station

    Owlet Cons:

    • No backup memory
    • No monitor screen
    • Must use the phone to see real-time data and save history recordings
    • Must be used in the Wi-Fi environment
    As for the Bluetooth connection and built-in memory, BabyO2 S2 is better than Owlet. It is not convenient to use the Owlet sock to save recordings because a Wi-Fi connection is needed if connecting the Owlet APP to view real-time readings and sleep history, which means you have to use it in a Wi-Fi environment. And even worse the Owlet sock does not have backup memory, so you have to record the data with your phone connected with the sock via Wi-Fi.

    The BabyO2 S2 is more friendly to travel. Its base station is light in weight and small in size, so easy to carry. With long battery life, you do not have to worry about its charging problem. Otherwise, its built-in memory supports saving recordings without a phone, so it won’t interfere with your daily phone use. But if you want to get the oximetry analysis for your little one, you have to connect the main device with your phone and then you can review the history data and analysis.

    #4 Features and usability

    BabyO2 S2 Owlet Smart Sock 3
    Notifications/Reminders from the base station Oxygen reminder, pulse rate reminder, no value reminder, moving reminder, the offline reminder Live heart rate, oxygen level, wellness notifications, and room temperature sensors
    Adjustable audio alarms Yes, you can customize the reminder: oxygen levels threshold, pulse rate threshold, reminder delay time No, the Owlet Smart Sock’s preset levels cannot be changed.
    Monitor screen: Real-time readings 3 screens: monitor device, base station, APP Only APP
    Sleep history report Review on APP and PC software Review on APP

    BabyO2 S2 pros:

    • Real-time monitor screen
    • Adjustable parameters’ thresholds and audio alarms

    BabyO2 S2 cons:

    • No temperature sensor

    Owlet Smart Sock pros:

    • Have room temperature sensor

    Owlet Smart Sock cons:

    • No monitor screen
    • Absolute preset oxygen norms

    #5 APP Comparisons

    BabyO2 S2 pros:

    • Free to use
    • Detail sleep reports knowing your baby’s average oxygen and the time of lower than 90%

    BabyO2 S2 cons:

    • Don’t support multiple users
    • Once you leave the dashboard, you cannot receive alarms from your phone if you don’t use the base station.
    Babyo2 s2 app recordings
    Babyo2 s2 app trends dashboard
    Babyo2 s2 remeinder settings
    Owlet Smart Sock pros:

    • No monthly fee is required to access the Owlet app.
    • The same Owlet app account can be logged into on multiple devices.

    Owlet Smart Sock cons:

    • Must connect Wi-Fi
    •  Phone notifications are dependent on your device’s sound settings. If you have the sound off on your phone, you will not get sound notifications from the Owlet app, only vibrations.


    After comparing the BabyO2 S2 baby oxygen monitor and Owlet Smart Sock3 as above, you can find the BabyO2 S2 is more economical than Owlet. Both the baby monitors are used to track your loved little one’s vital signs of oxygen levels and pulse rates and to send audible notifications to parents so as to tell them when babies need attention. The BabyO2 S2 is more convenient to carry outside and to read real-time data because of its Bluetooth connection, built-in memory and long battery life, while the Owlet doesn’t have a monitor screen and relies on your phone use too much. But on the other hand, the APP of BabyO2 S2 is not better than Owlet APP. However, it won’t affect its main purpose to review historical data and oximetry analysis. Thus, by and large, BabyO2 S2 is more cost-effective than Owlet Smart Sock.

    Mom Hendrix’s Story with Wellue Baby Oxygen Monitor

    Mom Hendrix’s Story with Wellue Baby Oxygen Monitor

    Mom Hendrix is one of our customers who has two kids and has ever Mom Hendrix is one of our customers who has two kids and has ever had to deal with that has asthma and with any sickness. This is her story with BabyO2 Baby Oxygen Monitor, a trusted baby device from GetWellue online store. 







    2 months old having to deal with RSV!!! After getting his first round of shots
    (We are still having to do breathing treatments!) 

    And then I found Wellue! These kind-hearted people truly care about babies, they acted like family to me to check on my baby while my device was being sent. Wellue Baby O2 Oxygen Monitor has done more than just help me, it lets me know every time he was going to have a breathing spell so I knew when to start getting his breathing machine ready for him! This device has been more than a blessing to my family, I don’t know what I would do without it now. I feel so much more prepared for my baby boy! I feel on top of everything now!! I use it every single nap time and every single night now! If he is any bit stuffy during the day we have playtime with the monitor on and we absolutely love our Wellue baby monitor! A few nights before I got my device in the mail, we had a scare where he stopped breathing again on us and now I have so much reassurance every day, and when he’s sick or having a bad day with asthma! I can have a device to alert me like I have someone helping me watch him when I ain’t able to look, I have two kids so I can’t have my eyes on him every second! I truly recommend this device to any mother, because no one knows what your baby will go through and start facing in life! There are so many sicknesses and so many babies dying that something like this is such an amazing thing to have!












    Dealing with Covid but WE HAVE OUR MONITOR NOW!!!!!! Thank God!!!! 

    My experience: I received it and the first thing I noticed is it’s very well made, it made me feel like hospital quality equipment. I got it out of the box and put it together it was very simple to figure out and there is an app on your phone you can get and use without even having to use the Internet turned on. I’ve used a couple of devices that I borrowed from friends and so far this is my absolute favorite. This has done better than the owlet when it comes to reading oxygen and it’s something you can buy and not expect to have to buy 10 other things for it! It doesn’t need wifi, it stores your data, it’s so on point with everything, it really feels like my baby is hooked up to a hospital monitor (I showed it to my friend that works in ICU and she said it’s literally just like a hospital-grade device).

    And it has alerts that go off if there is any worry with anything. And the best thing about it all is you can use this device all the way up to 3 to 4 years old and that’s pretty amazing because you can really get your money’s worth out of it! I feel like I have already got my money’s worth out of it on the first week and that’s just because it works that great!!! I know I’m gonna be using this thing for many years and I have no reason to keep searching for another device because this one does everything I was looking for it to do!



    Such a relief to be able to check this any time and such great quality 



    And I just love how I can click the app at any time and check on my baby boy! It’s 11:35 pm and I know my baby boy is breathing just fine

     I have two kids and my son is the first kid I’ve ever had to deal with that has asthma and with any sickness, everything is twice as hard!! I just know this is going to be a lot of worry-less days and nights because I have a monitor like this to tell me the accurate reading of his breathing and his heart right THAT I CAN TRUST!

    Overall I would give this product 10 stars if that was such thing, the ONLY thing that I would recommend differently is that it came with like some little case to put it in, like some kind of a safe place to put it when you’re not using it but other than that this is a solid device to buy and I highly recommend. I’m a very picky mother when it comes to what my babies use and this is one that I would recommend to any mother. I’m not the type to even take the time to write a review but it took me forever to find a device that really truly worked right. Every company is only out for their money, but this company has a heart they truly care about their customers and they showed me that! The customer service was beyond amazing and I didn’t doubt once about this company. I knew I was going to get my product and they kept me updated with everything and if your gonna buy a monitor USE YOUR MONEY HERE because this is the device you will be happy to have!!!! I will definitely be coming to Getwellue, for any products that I need from here on! They are amazing and top-grade and doing amazing things and I’ve very pleased with my baby’s device!!!

    He said mommy I like my new device!!!

    Baby O2
    Most Common Reasons Why Babies Wake Up At Night

    Most Common Reasons Why Babies Wake Up At Night

    Coaxing the baby to sleep is the most troublesome problem for many parents, and having a good sleep for the baby can not only reduce the parents’ worries about the baby, but also help the baby achieve better growth.  Parents can reinforce this habit of sleeping through the night with some good practices. WellueHealth tells you ways to ensure your baby sleeps peacefully for the entire night.

    When Do Babies Sleep Through The Night?

    A baby will sleep through the night after the age of three months . “Sleeping through the night” means that the baby will sleep for at least 6 hours in a row without waking up. Usually, a baby at this age will wake up at least twice during the night, perhaps for a feed or due to a soiled diaper. As the baby grows older, the number of consecutive night sleeping hours may increase.

    It is to be noted that not all babies are the same and “sleeping through the night” could vary. Some infants average around five hours of continuous sleep while some may go up to eight hours.

    Nevertheless, 80% of infants learn to sleep through the night, averaging around 11 hours, by the time they are nine months old .

    But, there could be reasons for why the baby may not get a proper sleep in the night.

    When It Comes to Baby Sleeping,

    You Need to Look Further Than Your Regular Eyes Can See.

    Why Does My Baby Not Sleep Through The Night?

    The following reasons could be responsible for a baby’s inability to sleep through the night:

    Babies who have a significant gap since their last meal before bed, are quite likely to wake up in the middle of the night due to hunger. Make sure the baby does not go to bed on an empty stomach. Include a breastfeeding session at the end of the day, right before bedtime. If the baby is old enough to eat solid foods, then give a night meal.

    Just like adults, babies have two sleep stages – non-rapid eye movement sleep and rapid eye movement (REM) sleep; the latter is when one has a deep sleep. When switching from one sleep stage to another, a baby may wake up and have trouble sleeping again. Even adults and toddlers wake up, but fall asleep almost immediately. Babies may find it difficult to fall asleep instantly and thus may cry for comfort. However, as the baby grows, he learns to sleep better.

    Rapid development at certain stages of life can interfere with the baby’s sleep. For instance, babies going through a growth spurt at around six months may feel hungry more often thus waking up in the night for an extra feed . The baby may abruptly stop sleeping through the night during these stages and then resume uninterrupted night sleeping again.

    The circadian rhythm, also called body clock, determines how well someone sleeps. Sometimes, the baby may have ‘uncalibrated’ body clock, making it difficult to sleep and wake up at the right time. To ensure the circadian rhythm works properly, exposing the baby to some indirect sunlight such as the one falling from a window. Take him on a stroll in the warm sun during cold winter to help his body differentiate between night and day .

    Discomfort due to teething pain can disturb the baby’s sleep. If it happens repeatedly, you can administer ibuprofen or acetaminophen (paracetamol) to the baby before bed to reduce pain, but only after consulting the doctor . Babies’ dentition period starts only after six months. Therefore if you start sleep training early at around three months, the baby can tolerate teething pain better without waking up in the night.

    If the baby has any infections or diseases, then there is a high probability that he will wake up at least once in the night. You can prevent this by taking good care of the baby’s general health and helping him get prompt treatment in case of an underlying condition.

    As parents, there is a lot you can do to ensure that your baby gets his required sleep through the night.

    How To Make A Baby Sleep Through The Night?

    You can make sure the baby is sleeping through the night by training him right soon after the first month. Here are some tips recommended by pediatric experts :

    • Follow a consistent bedtime routine. This ensures that the baby is all set for the night’s sleep. Some activities do great before bedtime such as bathing, reading, singing, and playing some soft music. Have the activity precisely the same time every day and have a set duration. Do not extend even if the baby seems to be enjoying it. It helps the baby establish a set routine before bedtime.
    • Maintain an ideal ambiance by keeping the environment in your baby’s room soothing and calming. Curtain the windows to make the room feel darker and also to insulate sounds from outside. Use a dim night light if possible. Also, use a softer voice when talking to the baby before bedtime. It makes him feel settled in for the night.
    • Place the baby in bed when he is drowsy but still awake. Do not wait for the baby to fall asleep in your arms before you place him in the bed. It will help the infant associate his night’s sleep with the crib, helping him sleep better.
    • You may consider using a pacifier. The American Academy of Pediatrics (AAP) recommends giving the baby a pacifier at night as it soothes while bringing down the risk of sudden infant death syndrome (SIDS) . Wait till the baby is at least a month old before you introduce a pacifier. Also, select a one-piece pacifier, which has no breakable parts .
    • Let the baby choose when he wants to sleep. Parents should accommodate the baby’s preferences, and make changes to their routine accordingly. It can help the baby sleep through the night and sleep better.

    Wellue BabyO2™Baby Oxygen Monitor

    Monitor Baby’s Blood Oxygen Levels with Audio Reminder in Mobile App and Device.

    Wear BabyO2™ for your baby, put him/her in the crib or co-sleeper, connect the APP via Bluetooth. Know your baby is OK all the time, even when you are out of reach.You and your baby will both rest easy.

    Click the pic to learn more

    Pediatric experts state that there is no one single way of making your baby sleep through the night . You will have to try many things before you finally arrive at what works for your baby. Finally arrive to a conclusion which solution is better for your baby’s sleep. However, you could face some genuine challenges while training your baby to sleep in the night.

    What Are The Challenges In Training A Baby To Sleep Through The Night?

    There could be some roadblocks while training your baby to sleep in the night. Some of them are given below.

    Babies need time to develop a routine. They do not have a fixed sleep and wake cycles like adults. It means a baby may stay awake when you would expect him to sleep, and may doze off when you want him to keep awake. Therefore, when you start the training, you may notice inconsistent results. The baby may sleep through the night for a few nights, then go back to waking up repeatedly.

    Be prepared for a lot of fussiness. If you start the training later, when the baby is older, then you may have to face tantrums. But do not give up . Consistency is the key to ensure the baby learns to sleep through the night.

    The baby may have a favorite sleeping spot such as your arms or the bassinet. It may be difficult to separate him from the spot as the baby may have found the place soothing to fall asleep. However, over a period, the baby will learn to sleep in the crib.

    Consistent effort is the key to help your baby sleep through the night. But remember, in spite of all the efforts, your baby could seem to have a hard time sleeping through the night. There is nothing wrong with it. Pediatric experts state that some babies are just poor night sleepers while some sleep through the night with minimal training. As babies grow older, they adopt regular sleep schedules that are predictable. Until then, do not give up on your efforts.