Hi, Thanks for writing in. Patients who have vertebrobasilar insufficiency can have a complete stroke if precautions are not taken and treatment is not started. It is best to quit smoking immediately, and control high cholesterol levels through diet, and exercise regularly. After discussing with your doctors, taking prescribed medication to control high blood pressure, lower blood cholesterol levels and block platelet function is important. Location of the plaque causing the vertebrobasilar insufficiency will determine whether repair of the artery is possible. Surgical or non invasivetreatment includes opening up of the narrowed portion. The further the plaque is from the brain, the more likely open surgical repair or endovascular repair will be considered as treatment options.