Final answer:
The patient likely has antiphospholipid syndrome causing stroke, and an appropriate intervention is anticoagulation with low molecular weight heparins. Systemic lupus erythematosus should also be considered in the diagnosis.
Step-by-step explanation:
The 39-year-old patient with a history of multiple miscarriages who has developed an acute left-sided hemiparesis and has elevated anticardiolipin titers likely suffers from an autoimmune condition called antiphospholipid syndrome, which can cause strokes and is associated with miscarriages. Considering there are no other risk factors for stroke present, an appropriate intervention would include anticoagulation therapy to prevent further thrombotic events. Based on the clinical information provided, this could potentially involve the use of low molecular weight heparins, as these are safer for individuals who may become pregnant and do not carry the same risk of teratogenicity as warfarin.
An autoimmune disorder, such as systemic lupus erythematosus (SLE), may also be considered in differential diagnosis, especially since SLE can lead to antiphospholipid antibodies production. This requires a comprehensive assessment by a rheumatologist and may include further immunosuppressive treatments depending on the full clinical picture.