1. What is Blood Pressure Calculation?

Definition: This calculator estimates blood pressure based on cardiac output and systemic vascular resistance.

Purpose: It helps medical professionals and students understand the physiological relationship between these cardiovascular parameters.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( BP \) — Blood Pressure (mmHg)
• \( CO \) — Cardiac Output (L/min)
• \( SVR \) — Systemic Vascular Resistance (dyn·s/cm⁵)

Explanation: The calculator converts SVR from dynes to mmHg units (dividing by 80) before multiplying by cardiac output.

3. Importance of Blood Pressure Calculation

Details: Understanding this relationship helps in diagnosing and managing hypertension, shock, and other cardiovascular conditions.

4. Using the Calculator

Tips: Enter cardiac output (normal range 4-8 L/min) and systemic vascular resistance (normal range 800-1200 dyn·s/cm⁵). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why divide SVR by 80 in the calculation?
A: This converts resistance units from dynes to mmHg, making the result clinically meaningful blood pressure values.

Q2: What's a typical cardiac output value?
A: Normal cardiac output ranges from 4-8 L/min in healthy adults at rest.

Q3: How does this relate to mean arterial pressure (MAP)?
A: MAP can be calculated similarly but uses total peripheral resistance (TPR) instead of SVR.

Q4: What factors affect systemic vascular resistance?
A: Vessel diameter, blood viscosity, and vessel length all influence SVR.

Q5: Does this account for pulse pressure?
A: No, this calculates mean pressure. For systolic/diastolic values, additional factors like arterial compliance are needed.