Pulmonary embolism is indicated by a blood oxygen level of .2 mg/ml.
Anticoagulation therapy is usually continued for 36 months, or "lifelong" if there have been previous DVTs or PEs, or none of the usual transient risk factors is present
=== Intravenous administration ===Many forms of medication (from antibiotics to chemotherapy) are administered intravenously, as they are not readily or adequately absorbed by the digestive tract

