Also known as: sys.
SYS has various meanings in the Laboratory category. Discover the full forms, definitions, and usage contexts of SYS in Laboratory.
Pronunciation: sis-tol′ikThe blood pressure when the heart is contracting. It is specifically the maximum arterial pressure during contraction of the left ventricle of the heart. The time at which ventricular contraction occurs is called systole.In a blood pressure reading, the systolic pressure is typically the first number recorded.
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