Jessica, a 7-year-old girl with kidney cancer, was admitted to the hospital for surgery and chemotherapy. On day 2, Jessica develops severe dyspnea and tachycardia. Oxygen saturation on room air is noted to be 84%. Radiographic imaging confirms pulmonary embolism. The pediatrician caring for Jessica is notified and prepares to order a heparin infusion.
In ordering anticoagulation for this patient, which of the following would you consider when writing the order? (select only one)