The pulmonary circulation
The prevalence of high blood pressure in pulmonary circulation?
Primary pulmonary hypertension is a very rare condition and the number of new cases per year reported to be ca. 1-2 per 1 million people. In childhood there is no gender difference, but after puberty, the prevalence was higher in women than men (1,7:1). The condition is most frequent in the age group 20 to 40 years.
Secondary pulmonary hypertension is more common but is underdiagnosed. The exact incidence is difficult to estimate because of the huge spread in the underlying causes.