There are several disorders that can affect valve function, including valvular regurgitation and valvular stenosis.
Study suggests manufacturers test for all strains of P. aeruginosa to prevent infection
More than half of children who use a backpack for school carry loads that are more than 15 percent of their body weight, according to the American Physical Therapy Association. Fifteen percent of body weight is considered the maximum safe weight for children to carry in a pack. If your child carries a heavy pack, discuss which items might be left at home or school to lighten the load.