🩺 Blood Pressure Calculator

Format: Systolic / Diastolic mmHg Systolic (top number): Pressure when heart BEATS and pumps blood Reflects cardiac output and arterial stiffness Diastolic (bottom number): Pressure when heart is at REST between beats Reflects peripheral vascular resistance Normal: Less than 120/80 mmHg Optimal: 115/75 mmHg (lowest cardiovascular risk)

MAP = Diastolic + (1/3 × Pulse Pressure) = Diastolic + (Systolic - Diastolic) / 3 Example: 120/80 mmHg MAP = 80 + (120 - 80) / 3 = 80 + 13.3 = 93.3 mmHg Normal MAP: 70–100 mmHg Below 60: Organs may not receive adequate perfusion Above 110: Increased cardiovascular risk

Pulse Pressure = Systolic − Diastolic Example: 120/80 → Pulse Pressure = 40 mmHg Normal: 30–50 mmHg Wide (over 60): Indicates arterial stiffness, increased aortic regurgitation risk Narrow (under 25): May indicate heart failure, cardiac tamponade, or shock Pulse pressure widens with age as arteries stiffen.

DASH Diet: -8 to -14 mmHg (systolic) Weight loss (10 lbs): -5 to -8 mmHg Sodium reduction: -2 to -8 mmHg (under 2300mg/day) Aerobic exercise: -4 to -9 mmHg (150+ min/week) Limit alcohol: -2 to -4 mmHg (under 1 drink/day) Quit smoking: Reduces risk beyond BP alone DASH + Exercise: Up to -20 mmHg combined For Stage 1: Lifestyle alone can often normalise BP For Stage 2: Usually requires medication + lifestyle