Can we add two terms
Systolic blood pressure: Measurement of pressure in your arteries when your heart pumps blood
Diastolic blood pressure: Measurement of pressure in your arteries when your heart is at rest between beats
I would assume both of these would be children of "blood pressure trait" OBA_VT0000183, (or maybe of "arterial blood pressure trait" OBA_VT2000000). I'm not sure how to fully axiomatize the distinction of during and between heartbeats.