Which wound heals by secondary intention?

The mother of the 7-week-old infant reports the baby has had fewer and fewer wet diapers and hasn’t stooled in 3 days despite having a ravenous appetite. The mother reports that the child has been vomiting with increasing force and volume over the past two weeks. The emesis just appears to be partially digested breastmilk and fluid. The infant appears well and vitals are normal. Upon palpation of the abdomen, a small, olive-shaped mass is appreciated. The nurse alerts the provider and prepares education for which procedure?  

The nurse is assigned a patient with Hodgkin’s lymphoma undergoing initial treatment. On the patient’s second day, he develops an acute painful swelling and erythema of the right gastrocnemius. The following morning, the patient develops an acute shortness of breath and pleuritic chest pain. Within minutes, the patient loses consciousness and dies. Which of the following interventions would most likely have prevented this patient’s death?