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.
Primary (Essential) Hypertension. There are two broad categories of hypertension - primary (or essential) and secondary hypertension. Approximately 90-95% of patients diagnosed with hypertension have primary hypertension. Unlike secondary hypertension, there is no known cause of primary hypertension.