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.
3. Because defendants have a right to a speedy trial, the prosecutor must generally file charges within 48 hours of the arrest when the defendant is in custody (in jail). Weekends, court holidays, and mandatory court closure days do not count against the 48 hours.