Final answer:
The correct statement showing understanding of enoxaparin administration is to inject it into the abdomen. Massaging the injection site, skipping doses, or changing needle sizes without consulting a healthcare provider are not advised.
Step-by-step explanation:
A patient with pulmonary embolism demonstrating an understanding of the instructions for administering enoxaparin after discharge will make the statement: "I need to inject enoxaparin into my abdomen." This is the correct procedure for subcutaneous injections of enoxaparin, which helps prevent blood clots from forming or worsening. It is important not to massage the injection site after administering the medication, nor should a patient skip doses or change needle sizes without consulting their healthcare provider.