The nurse is admitting a client diagnosed with deep vein thrombosis. He is starting treatment with IV anticoagulation therapy. Which of the following assessments is most important to report to the physician?
a) The client takes nifedipine (Adalat) for treating hypertension.
b) The client uses ibuprofen (Motrin) for treating osteoarthritis.
c) The client takes loratadine (Claritin) for treating allergies.
d) The client takes psyllium (Metamucil) occasionally for constipation.