Hypertension is the term used to describe high blood pressure. Essential hypertension means that the cause of high blood pressure is not known. Blood pressure measures the force against the walls of your arteries as your heart pumps blood through your body.Blood pressure readings are usually given as two numbers -- for example, 120 over 80 (written as 120/80 mmHg).ssential hypertension means that the cause of high blood pressure is not known. Blood pressure measures the force against the walls of your arteries as your heart pumps blood through your body. Blood pressure readings are usually given as two numbers -- for example, 120 over 80 (written as 120/80 mmHg).
povidone-iodine (PVP-I) a complex produced by reacting iodine with the polymer povidone; it slowly releases iodine and is used as a topical antiinfective agent.
1 Tincture of iodine: iodine in ethanol, or iodine and sodium iodide in a mixture of ethanol and water. 2  Lugol's iodine: iodine and iodide in water alone, forming mostly triiodide. 3  Unlike tincture of iodine, Lugol's has a minimized amount of the free iodine (I 2) component. 4  Povidone iodine (an iodophor).