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.
The actual surgery time is usually about 30 minutes, but if extensive work is needed, the procedure may last slightly longer. At the end of the surgery, local anesthesia medication is injected into the knee and reduces pain for about 10 to 12 hours after surgery.