The other planets: Mercury was the Roman messenger of the gods. Venus was the Roman goddess of love. Mars was the Roman god of war. Jupiter was another name for Jove, Roman god of the skies and king of the gods. Saturn was the Roman god of time and the harvest, and Jupiter's father.
Pulse pressure is the difference between the systolic and diastolic pressure readings. It is measured in millimeters of mercury (mmHg). It represents the force that the heart generates each time it contracts. If resting blood pressure is (systolic/diastolic) 120/80 millimeters of mercury (mmHg), pulse pressure is 40. pulse pressure is considered abnormally low if it is less than 25% of the systolic value. The most common cause of a low (narrow) pulse pressure is a drop in left ventricular stroke volume.
1 There is a small subgroup of patients with high blood pressure or renal failure caused by renal artery stenosis. 2  Some of these patients may respond favorably to dilating the narrowed artery, using the technique of angioplasty.