|Hypertension is a common, undertreated disease and a major risk factor for cardiovascular, cerebrovascular and renal disease. As many as 20-30% of hypertensive patients have resistant hypertension, defined as uncontrolled blood pressure despite 3 or more antihypertensive drugs including a diuretic, typically combined with a calcium-channel blocker and an angiotensin-converting enzyme inhibitor or angiotensin receptor blocker. Patients with resistant hypertension can often be controlled by adding a mineralocorticoid receptor antagonist and/or vasodilating beta-blocker.
Open access to the scientific literature means the removal of barriers (including price barriers) from accessing scholarly work. There are two parallel roads towards open access: Open Access articles and self-archiving. Open Access articles are immediately, freely available on their Web site, a model mostly funded by charges paid by the author (usually through a research grant). The alternative for a researcher is self-archiving (i.e., to publish in a traditional journal, where only subscribers have immediate access, but to make the article available on their personal and/or institutional Web sites (including so-called repositories or archives)), which is a practice allowed by many scholarly journals.
Open Access raises practical and policy questions for scholars, publishers, funders, and policymakers alike, including what the return on investment is when paying an article processing fee to publish in an Open Access articles, or whether investments into institutional repositories should be made and whether self-archiving should be made mandatory, as contemplated by some funders.