The nurse knows that which of the following is not a cause of mastitis?

A. "Apply cold compresses when your child expresses pain." Cold can cause vasoconstriction, which may precipitate a sickle cell crisis by reducing blood flow to the extremities, thus increasing the risk of sickling of red blood cells. Warm compresses are recommended to help alleviate pain by promoting blood flow.
B. "Restrict outdoor play activity to 1 hour per day." While it's important to monitor physical activity to avoid overexertion, restricting outdoor play to a specific time frame without considering other factors like hydration and rest isn't the right approach. Physical activity is important but should be balanced with adequate hydration and rest.
C. "Monitor your child's temperature daily." While monitoring temperature is important, it isn't specifically critical on a daily basis unless there is a suspicion of infection. The primary focus should be on hydration and recognizing signs of infection.
D. "Offer fluids to your child multiple times every day." Hydration is crucial for children with sickle cell anemia as it helps to prevent sickling of cells by maintaining good blood flow and preventing dehydration, which can trigger a crisis.

A. Rhythmic suckling. Indicates the infant is effectively extracting milk.
B. A slurping sound as the infant sucks. This suggests poor latch and possible ingestion of air.
C. Tongue down with lips flanged. Shows that the infant's tongue is extended over the lower gum and lips are flared outward, creating a seal.
D. Dimpling of the infant's cheeks while sucking. Indicates improper latch and poor seal around the breast.
E. Audible swallowing. Indicates milk transfer is occurring as the infant swallows.