Blood pressure is governed by five elements--the strength of the heartbeat, the volume of blood, the viscosity of the blood, the resistance of the arterioles, and the elasticity of the arterial walls. An abnormality of any of these can cause the blood pressure to be too high or too low.
Depending on the complexity of the case a trial can last anywhere from one day to six months or longer. If you are asking how long a rape prosecution takes you are probably looking at 6 months to a couple of years.
Jury trials can last anywhere from less than one day to many weeks in length. The majority of our trials in the Eastern District of Arkansas last two to three days. If you were subject to a lengthy trial, you may advise the court that this would cause a problem for you.