The Phase Gate Review methodology improves project effectiveness by reviewing all stages of the project from the initial selection process through the entire process of development to the final stages of closure.
Idiopathic hypertension redirects here. For the condition of raised blood pressure within the skull, see Idiopathic intracranial hypertension. Essential hypertension (also called primary hypertension or idiopathic hypertension) is the form of hypertension that by definition has no identifiable cause.
This actually depends on the cause of the high blood pressure. High blood pressure or hypertension is categorized as either primary or essential and secondary.. Essential hypertension is present in up to 90% of those with hypertension and there is thus far no known cause for it.