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.
Your blood pressure numbers and what they mean. Your blood pressure is recorded as two numbers: Systolic blood pressure (the upper number) â indicates how much pressure your blood is exerting against your artery walls when the heart beats. Diastolic blood pressure (the lower number) â indicates how much pressure your blood is exerting against your artery walls while the heart is resting between beats.