However, it is also important to realize that most of the time nothing needs to be done about the stuffy nose. Babies under about three months of age are called obligate nose breathers. In other words, they only really know how to breathe through their nose.
parenting.ivillage.com/newborn/nhealth/0,,9zth,00.html
Babies are “obligate nose breathers”, meaning that they can only breathe through their noses; the only time newborns breathe through their mouths is when they are crying. ... Chromosomal anomalies are found in 6% of infants with choanal atresia and 5% of babies have syndromes with multiple defects. Nearly half of...
www.health.state.mn.us/divs/fh/mcshn/bd/choanal.htm
"She is at an age until about 4-5 months where she is an obligate nose breather."; I a quote from an outside source that I included to show that babies are in fact nose breathers, I was not refering to the child in this case as a female.
www.shortnews.com/start.cfm?id=63251
4. Blocks little noses. The nasal passages of babies are particularly sensitive to smoke and other irritants and allergens. Also, some babies are obligate nose breathers; meaning they insist on breathing through their nose and, unlike adults, do not switch to mouth breathing if their noses are blocked.
www.askdrsears.com/html/10/t105800.asp
Question: Our babies nose gets heavy mostly during night and sometimes he cannot breath and wakes up. We are now ... Answer: Babies are obligate nose breathers. This means that they have not yet learned how to mouth breath when having nasal congestion. They obviously cannot blow their nose either....enter A FUSSY BABY!
www.bluesuitmom.com/health/pediatrician/nose.html www.bluesuitmom.com/health/pediatrician/nose.html
Some babies are congested at birth or shortly thereafter. Babies are obligate nose breathers, meaning they can only breathe through their nose and not their mouth. ... Babies with reflux can also develop respiratory problems from stomach contents entering the nose, windpipe or lungs.
www.mynwpeds.com/newborninfo.asp
All but the adult human mammal are obligate nose breathers. Key Point: Because of this difference, animals cannot be used for sleep apnea research involving the airway. The research results are invalid even before the research begins.
www.brianpalmerdds.com/sids_otitis.htm
Babies are also obligate nose breathers which means they breathe only through their nose, not their mouth. They continue to be nose breathers for the entire first year of life. Since all of an infant’s breathing is through his nose, the slightest congestion or mucus tends to make a lot of noise.
pediatricadvice.net/2007/03/noisy-breathing.html
Babies are “obligate nose breathers” until around two months of age, which means that they predominately breath through the nose. They have a sensitive reflex built in to insure that the tiny nasal passages stay open.
www.informedparent.com/article.html?newbornvisit
Babies are obligate nose-breathers for the first several months of life. This means that they exclusively breathe through their nostrils. This reflex is built in to insure that the passages remain open. Dried mucus, lint or dust may stimulate this reflex which makes the baby sneeze a few times in a row.
www.informedparent.com/article.html?normalfornewborns