Systolic Blood Pressure (SYS): Definition and Significance
In blood pressure notation SYS (or SBP) = Systolic pressure – the peak arterial pressure during ventricular contraction (heartbeat).
Example: 120/80 mmHg → 120 mmHg systolic, 80 mmHg diastolic.
Clinical Importance
- Major cardiovascular risk factor (especially >130 mmHg).
- Isolated systolic hypertension common in elderly (stiff arteries).
- Target: <130 mmHg for most adults (per ACC/AHA); individualized for frailty/comorbidities.
Measured by auscultation (Korotkoff sounds) or oscillometry. Home monitoring improves control.
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