Hypoxia, or lack of sufficient oxygen, is the single most common cause of cellular injury (see Figure 2-8). The other options are not a commonly observed as is the correct option. PTS: 1 REF: Page 56 31. During cell injury caused by hypoxia, sodium and water move into the cell because: a.
Boys develop ear infections more often than girls, as do kids with a family history of ear infections. They're also more common during the winter season, when lots of people get upper respiratory tract infections or colds.
It usually wears off within 24 hours. After an ear infection, your child may have fluid behind their ear drum (effusion) which can last several weeks to months. This may cause your child to have an ongoing feeling of discomfort in their ears.s children grow older, their Eustachian tubes work better. They also get fewer colds, and so they often outgrow the tendency to have frequent ear infections. This tends to happen from around 7 years of age, although there are some children who may have problems beyond this age.