This is not low blood pressure, if any associated symptoms like giddiness, sweating, cold limbs, or headache with frequent BP, lead readings, less than hundred systolic or significantly low diastolic pressure shall be treated medically. 30% LAD blockage for symptoms will not require any other active management other than lifestyle management and anti-platelets and statins if needed. Keep adequate hydration with few fruit juices or lemon juices with pinch of salt to keep Da BP with the normal range.