How low is the BP going to shock?

Normal blood pressure is systolic blood pressure in 90-140mmhg, diastolic blood pressure in 60-90mmhg. When the systolic blood pressure is as low as 90 or 85mmhg, diastolic blood pressure is depressed to 60 or 50mmhg, shock can occur. once hypotension occurs, systemic organ ischemia, hypoxia and other symptoms will occur.