This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Stroke and TIA, Subject name: Medicine
Pregnant patient came with right sided hemiparesis and aphasia > 1 hour, CT came normal. What is the next best step? 
Select and explain. 
A. Dual antiplatelet therapy immediately, B. Thrombolysis, C. Do MRI and catheter guided clot extraction, D. Thrombectomy
B: Thrombolysis
Answer: B: Thrombolysis 
Explanation: Diagnosis - Acute ischemic stroke as CT is normal Patient brought within window period (within 4.5 hrs)(however patient is pregnant) | You still carry out thrombolysis: main best step. Thrombolysis indications: (in pregnancy) Pulmonary embolism in pregnancy. Stroke in pregnancy Metallic prosthetic valve (resulting in clot migrated to brain) Option 1- Dual antiplatelet therapy is indicated for Mx of TIA (no role in AIS as stroke present) DAT is indicated in: STEMI, NSTEMI, TIA Option 3 and 4 are interrelated usually done for late presentation >4.5 hr in cerebral aeries of patient