Comparison of the prognosis of hypertension associated with chronic glomerulonephritis with that of essential hypertension.

The difference of the prognosis between essential and renal hypertension (chronic glomerulonephritis) was examined by compairing the survival rate of the patients, and the effect of lability of blood pressure and the effect of the response to hypotensive drugs on the prognosis of the two types of hypertension was observed. The prognosis of renal hypertensives was remarkedly worse when it was compaired with the prognosis of essential hypertensives. More then 80% of the latter was still alive after ten years, while the mortality rate of the former after 5 years was only 20%. Each factor of severity (diastolic pressure, optic fundi, cardiac, cerebrovascular and renal complication) in non severe patients (group O-II) did not differently affect the survival rate of both hypertensives. Diverse prognosis was observed in severe patients (group III-IV), depending on each factor of severity. In renal hypertension the survival rate was extremely low when the patients had high diastolic pressure, severe cardiac and cerebrovascular complication. It was not so low in the patients with severe ophthalmoscopic change. The prognosis of essential hypertension was poor in the order of severe cerebrovascular complication, renal complication and cardiac complication. The survival rate of the patients with high diastolic pressure or severe ophthalmoscopic change was considerably high. The patients with both renal and essential hypertension showed greater survival rate when the blood pressure was much more reduced by bed rest or antihypertensive drugs during the first hospitalization.