Blood pressure chart: What your reading means - Mayo Clinic
Dec 24, 2025 · Top number, called systolic pressure. The top number measures the pressure in the arteries when the heart beats. Bottom number, called diastolic pressure. The bottom number …
Pulse pressure: An indicator of heart health? - Mayo Clinic
Aug 18, 2023 · Pulse pressure is determined from the two numbers of a blood pressure reading. Blood pressure is measured in millimeters of mercury (mm Hg). The top number is called systolic pressure. …
High blood pressure (hypertension) - Symptoms and causes
Those numbers are the systolic blood pressure and the diastolic blood pressure. Because of the pumping action of the heart, the pressure within the arteries cycles between a higher pressure and a …
Isolated systolic hypertension: A health concern? - Mayo Clinic
Apr 25, 2024 · Isolated systolic hypertension happens when the top blood pressure number is 130 mm Hg or higher and the bottom number is less than 80 mm Hg. Isolated systolic hypertension is the …
Low blood pressure (hypotension) - Symptoms and causes
Jun 13, 2024 · A blood pressure reading has two numbers: Top number, called systolic pressure. The top number is the pressure in the arteries when the heart beats. Bottom number, called diastolic …
Ejection fraction: An important heart test - Mayo Clinic
Jan 29, 2025 · Ejection fraction is a measurement of the percentage of blood leaving the heart each time it squeezes. When the heart squeezes, it's called a contraction. Ejection fraction is just one of many …
Elevated blood pressure - Diagnosis & treatment - Mayo Clinic
Feb 29, 2024 · The top number (systolic) is the pressure of the blood flow when the heart muscle squeezes (contracts), pumping blood. The bottom number (diastolic) is the pressure in the arteries …
What is hypertension? A Mayo Clinic expert explains.
Apr 2, 2025 · The higher pressure is known as the systolic blood pressure. The lower pressure occurs during the relaxation of the heart's left ventricle. This lower pressure is referred to as the diastolic …
Heart failure with preserved ejection fraction (HFpEF): More than ...
May 20, 2015 · Although systolic function is relatively preserved, individuals with HFpEF typically exhibit subtle abnormalities in systolic performance, which become more dramatic during exercise. Limited …
Pheochromocytoma and irregular blood pressure - Mayo Clinic
The lower points show the bottom number of the reading, called diastolic pressure. The higher points show the top number of the reading, called systolic pressure. For example, the first burst in blood …