Stressful experience may result in the inception of asthma, exacerbations, and. inadequate control. In this article we explore the relationship between psy-. chologic stress as an exacerbating factor of asthma and the mechanisms through. which this relationship may exist.
That sort of thing takes months or years. As for brain surgery, many last several hours. If done right, the type of brain surgery known as Deep Brain Stimulation takes at least six or seven hours, to implant electrodes in the target area of the brain.
1 CT exam of the head and brain can take between 2 and 20 minutes. 2  Because CT uses X-rays, you may not have a family member or friend in the CT room during the exam.  For young patients, a parent may be able to stay in the room with their child to help reduce fear and provide comfort.