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.
Ear infections are not contagious. Expected course: If you give your child the antibiotic as directed, the fever should be gone by 2 days (48 hours). The earache should be improved by 2 days and gone by 3 days (72 hours). The main symptom is an earache. 2  Younger children will cry, act fussy or have difficulty sleeping because of the pain. 3  About 50% of children with an ear infection will have a fever. 4  Complication: In 5% to 10% of children, the pressure in the middle ear causes the eardrum to rupture and drain cloudy fluid or pus.