The most common symptom of JRA that causes a patient to seek medical attention is:

Correct Answer: D

Rationale: The most common symptom of Juvenile Rheumatoid Arthritis (JRA) that causes a patient to seek medical attention is pain. Joint pain is a hallmark symptom of JRA and can range from mild discomfort to severe pain. This pain can be persistent or intermittent, and it often worsens with movement or activity. Pain is a significant factor that leads patients to seek medical evaluation in order to diagnose and manage their condition. While joint swelling, limited movement, and fatigue are also common symptoms of JRA, pain is typically the primary reason patients seek medical attention.

Correct Answer: B

Rationale: While a child with nephrotic syndrome is confined to bed, changing their position frequently is an appropriate nursing intervention to prevent complications associated with immobility. Constant pressure on certain areas of the body can lead to skin breakdown, discomfort, and decreased circulation which can exacerbate the child's condition. Changing positions frequently helps prevent these complications and promotes circulation and comfort. Restraints should only be used when necessary for the safety of the child or others, passive rang-of-motion exercises should be done more frequently than once a day to prevent contractures, and discouraging parents from holding their child can have negative emotional and psychological effects on the child's well-being.

Correct Answer: C

Rationale: The newborn's posture at rest and arm recoil are two physical signs used to determine gestational age. Assessment of posture at rest involves observing the newborn's flexed or extended posture when lying flat on their back. Premature infants tend to have more flexed postures due to their immature muscular tone. Arm recoil refers to the ability of the newborn to return their extended arm flexes to the flexed position. This reflex is typically present in more mature infants. These physical signs, along with other factors such as skin texture, breast development, and ear formation, are used by healthcare providers to estimate the gestational age of newborns. While length, weight, and head circumference are also important measurements, the posture at rest and arm recoil are specifically used in determining gestational age.

Correct Answer: A

Rationale: Vitamin K is essential for the production of clotting factors in the liver. Newborns have lower levels of vitamin K and may not have a fully functioning clotting system, putting them at risk for bleeding disorders such as vitamin K deficiency bleeding (VKDB). Administering vitamin K to newborns helps prevent these bleeding issues and ensures proper clotting function. It does not have a direct effect on enhancing the immune response, preventing bacterial infections, or maintaining nutritional status, as its primary function in this context is to prevent bleeding disorders.

Correct Answer: C

Rationale: Carefully washing hands and maintaining cleanliness when caring for an infected child with impetigo contagiosa is important due to its highly contagious nature. Impetigo is a skin infection that is easily spread through direct contact with the lesions or with items contaminated by the infected person such as towels, clothing, or bedding. By washing hands and maintaining cleanliness, caregivers can help prevent the spread of infection to others and minimize the risk of re-infection to the child. This nursing consideration is crucial in managing impetigo and promoting the child's recovery.