A 61-year-old male patient presents to the nurse practitioner with a suspected venous thromboembolism. The NP understands that heparin is appropriate to use in all of the following diagnoses except:

Choice A reason: Heparin is indicated for cerebral thrombosis to prevent clot propagation in ischemic strokes. Choice B reason: This is correct. Heparin is contraindicated in hemorrhagic stroke because it increases the risk of further bleeding in the brain. Choice C reason: Heparin is commonly used for prophylaxis of embolic events in high-risk patients, such as those undergoing surgery or prolonged immobilization. Choice D reason: Heparin is a first-line therapy for pulmonary embolism to prevent clot extension and reduce morbidity and mortality.