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.
Symptoms of Ear Infection. One of the most common problems pediatricians see is ear infection. Almost half of all children will have at least one middle ear infection during their first year, and by age three, over two-thirds of all children will have had at least one middle ear infection. Symptoms include ear pain, fever, irritability, and sometimes dizziness in older children. Parents should also be on the lookout for more subtle signs, such as low appetite, less than normal activity, shaking the head or pulling on the ear and crying.