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American Heart Association
heart.org › en › health-topics › high-blood-pressure › understanding-blood-pressure-readings
Understanding Blood Pressure Readings | American Heart Association
August 14, 2025 - In hypertensive emergency, call 911 if your blood pressure is higher than 180/120 mm Hg and you are experiencing symptoms that may include: ... Systolic blood pressure is the first (top/upper) number.
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MedicineNet
medicinenet.com › what_does_sys_stand_for › article.htm
What Does "Sys" Stand For? Systolic Blood Pressure Meaning
February 9, 2023 - The term “sys” stands for systolic when measuring your blood pressure. The first number, systolic blood pressure, measures how much pressure is in the arteries when the heart is beating.
Discussions

Dia is 90 but sys is 118 - is it okay?
Your systolic is within the optimal (90-119) range, so good job! Unfortunately, you missed the prehypertension cutoff for diastolic (85-89) by one point. I would like to recommend an increase in physical activity, even if it is staring at your phone on the track, and lower salt intake. Also, make sure you are measuring with your left arm on an empty bladder. More on reddit.com
🌐 r/hypertension
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December 17, 2024
ELI5: When measuring blood pressure, what does systolic, diastolic and pulse readings indicate about your health?

Blood pressure by itself is just one of a set of vitals that tell us the current “health” of a person. 120 systolic (top pressure) and 80 diastolic (low pressure), or 120/80 (spoken as “one twenty over eighty”), is considered ideal for an adult. However, healthy people’s blood pressure will vary throughout the day and throughout their life for a huge variety of reasons. Obviously huge extremes are cause for concern. People with high systolic pressure, or hypertension, are at risk of a variety of complications; too much pressure. Someone with very low systolic pressure is also at risk, not enough pressure, not enough blood. Each have their causes and effects.

In general, diastolic pressure (the pressure during the heart’s “rest” and refilling period), is less important than its systolic pressure.

As always, your health, including cardiovascular health, should be monitored and treated if necessary by a licensed physician.

Source: am EMT

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Legacyseniorprimarycare
legacyseniorprimarycare.org › home › knowledge center › hypertension › what do blood pressure numbers mean?
What do Blood Pressure Numbers Mean? | Legacy Community Health Senior Primary Care
June 21, 2024 - THE TOP NUMBER Systolic Blood Pressure (SYS) Measures how much pressure your blood is exerting against your artery walls when the heart beats. THE BOTTOM NUMBER Diastolic Blood Pressure (DIA) Indicates how much pressure your blood is exerting ...
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NHLBI
nhlbi.nih.gov › health › high-blood-pressure
High Blood Pressure - What Is High Blood Pressure? | NHLBI, NIH
You can say this as “120 over 80 millimeters of mercury” or just as “120 over 80.” The first number is your systolic pressure — that’s the force of the blood flow when blood is pumped out of the heart.
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Cleveland Clinic
my.clevelandclinic.org › health › diagnostics › 17649-blood-pressure
What Is Blood Pressure?
June 2, 2025 - Systolic blood pressure: This is the top/first number. It’s the pressure in your arteries when your heart is beating and sending blood into your arteries.
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Harvard Health
health.harvard.edu › staying-healthy › which-blood-pressure-number-is-important
Which blood pressure number is important? - Harvard Health
July 24, 2024 - Systolic pressure reflects the force produced by the heart when it pumps blood out to the body, while diastolic blood pressure (the bottom number) is the pressure in your blood vessels when the heart is at rest.
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Mayo Clinic
mayoclinic.org › diseases-conditions › high-blood-pressure › in-depth › blood-pressure › art-20050982
Blood pressure chart: What your reading means - Mayo Clinic
Blood pressure is measured in millimeters of mercury (mm Hg). A blood pressure reading has two numbers. Top number, called systolic pressure.
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Oreate AI
oreateai.com › blog › understanding-sys-in-blood-pressure-the-role-of-systolic-measurements › f5e01b77bc386390faa039ca8702e958
Understanding 'Sys' in Blood Pressure: The Role of Systolic Measurements - Oreate AI Blog
December 30, 2025 - When you hear the term "sys" in relation to blood pressure, it’s shorthand for systolic blood pressure. This is a crucial measurement that reflects how hard your heart is working to pump blood through your arteries during each heartbeat.
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NewYork-Presbyterian
nyp.org › healthlibrary › definitions › systolic-blood-pressure
Systolic Blood Pressure - Health Library | NewYork-Presbyterian
Systolic pressure is the pressure of blood against the artery walls when the heart has just finished contracting or pumping out blood. (Diastolic pressure is the pressure of blood against the artery walls between heartbeats, when the heart is ...
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Imperial Center Family Medicine
icfamilymedicine.com › home › blog › what is systolic blood pressure and why does it matter?
What Is Systolic Blood Pressure and Why Does It Matter? - Imperial Center Family Medicine
January 12, 2026 - This reading indicates to your healthcare provider how forcefully your blood is hitting your artery walls each time your heart contracts and pumps blood throughout your body. Understanding your systolic blood pressure helps you catch heart health problems before they become serious.
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ScienceDirect
sciencedirect.com › topics › medicine-and-dentistry › systolic-blood-pressure
Systolic Blood Pressure - an overview | ScienceDirect Topics
Systolic blood pressure is defined as the pressure in the arteries when the heart contracts, typically less than 140 millimeters of mercury (mmHg), and it coincides with the first Korotkoff sounds heard during blood pressure measurement.
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Verywell Health
verywellhealth.com › systolic-and-diastolic-blood-pressure-1746075
What Your Blood Pressure Numbers Really Mean
December 15, 2025 - Systolic blood pressure is considered normal when the reading is below 120 mmHg (millimeters of mercury) while a person is sitting quietly at rest. Systolic pressure below 90 mmHg is considered low and may require intervention and management from your healthcare provider.
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Microlife AG
microlife.com › magazine › blood-pressure › understanding-the-readings
Understanding the readings - Microlife AG
If your blood pressure is 120/80 mmHg (often spoken "120 over 80"), it means you have a systolic pressure of 120mmHg and a diastolic pressure of 80mmHg. The SYS reading is the higher number, whereas the DIA reading is the lower number. Have ...
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Cleveland Clinic
my.clevelandclinic.org › health › diseases › 24666-isolated-systolic-hypertension
Isolated Systolic Hypertension (High Blood Pressure)
February 2, 2023 - Isolated systolic hypertension is a type of high blood pressure in which your systolic (top) number is high. With this condition, your top number is in the hypertensive range of 130 millimeters of mercury (mmHg) or higher, but your diastolic ...
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NCBI
ncbi.nlm.nih.gov › books › NBK279251
In brief: How is blood pressure measured? - InformedHealth.org - NCBI Bookshelf
July 3, 2024 - Blood pressure readings are made up of two values: Systolic blood pressure: This is the pressure when the heart beats – while the heart muscle is contracting (squeezing) and pumping oxygen-rich blood into the blood vessels.Diastolic blood pressure: This is the pressure on the blood vessels ...
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Medanta
medanta.org › patient-education-blog › systolic-vs-diastolic-blood-pressure-differences
Systolic vs Diastolic: Key Blood Pressure Differences Explained
August 22, 2025 - The diastolic pressure (bottom number) tells you the pressure in your arteries while your heart rests between beats. These two numbers make up your blood pressure reading, which doctors write as systolic/diastolic (like 120/80 mmHg). Which is ...
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Baptist Health
baptisthealth.com › blog › heart-care › healthy-blood-pressure-by-age-and-gender-chart
Blood Pressure Chart Per Age & Gender | Baptist Health
January 12, 2026 - The top number (called the systolic pressure) is the force each time your heart beats. The bottom number (diastolic pressure) is the force between beats. Maintaining healthy blood pressure is essential, as readings outside the normal range can ...
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MedlinePlus
medlineplus.gov › home › health topics
High Blood Pressure | Hypertension | MedlinePlus
January 22, 2026 - Each time your heart beats, it pumps blood into the arteries. Your blood pressure is highest when your heart beats, pumping the blood. This is called systolic pressure. When your heart is at rest, between beats, your blood pressure falls.
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Cigna Healthcare
cigna.com › home › knowledge center › wellness library › systolic blood pressure
Systolic Blood Pressure | Cigna
Systolic pressure is the pressure of blood against the artery walls when the heart has just finished contracting or pumping out blood. (Diastolic pressure is the pressure of blood against the artery walls between heartbeats, when the heart is relaxed and filling with blood.)