thank you for your query in healthcaremagic.com.... well from the short history that you have posted above, all i can say is that a surgery is not always necessary for dizziness and bp 188/100...in fact, on the first place, we go for medical management for lowering blood pressure...an attack of dizziness can accompany a rise of blood pressure or there can be some other causes for it also... kindly provide me with further histories regarding your attack otherwise proper diagnosis and further management is not possible... tell me whether you had any episodes of unconsciousness, vomiting, loss of sensation, weakness of a side of body, chest pain or palpitation associated with your rise in bp... if not much of the above is present, we generally start with furosemide or amlodipine followed by beta blockers or nitroglycerine patches if required.... come back to me with the answers.... hope this was helpful... regards