Answer :
Final answer:
Blood pressure lower than 90/60 or greater than 150/90 can be life-threatening.
Explanation:
Blood pressure lower than 90/60 or greater than 150/90 is the abnormal cardiovascular symptom that might be life-threatening. Severely low blood pressure can lead to shock, depriving vital organs of oxygen and nutrients, resulting in a life-threatening condition.
Learn more about Cardiovascular Symptoms here:
https://brainly.com/question/37888119