The nurse is caring for a 10-year-old boy with hemophilia. The nurse suspects the child has developed hemarthrosis when she observes

  1. jaundice.
  2. increased heart rate.
  3. popping sounds in the joints.
  4. redness or swelling over the joints.
Number 4 is correct.
Rationale: Hemarthrosis is a condition of bleeding in the joint spaces. It is a complication of hemophilia. Signs and symptoms may include redness or warmth in the joints, joint swelling or pain, and limited movement. Jaundice and increased heart rate are not symptoms of hemophilia. Popping sounds in the joints are not signs of hemarthrosis.