Treatments are typically measured by how long a patient is going to be at the desired pressure that is prescribed by a physician. Why? Patients are treated at different pressures and pressurize at different rates, making those periods differ between patients while the time at the desired pressure is always constant. In that respect, treatments last anywhere from 45 to 90 minutes, with the more common treatments being at 60 or 90 minutes. To account for the pressurization periods, an additional 15-20 minutes is to be expected with every treatment.