1. What is Cardiac Power Output (CPO)?

Cardiac Power Output (CPO) is a hemodynamic parameter that represents the heart's ability to generate power. It is calculated as the product of mean arterial pressure (MAP) and cardiac output (CO), divided by 451 to convert to watts.

2. How Does the Calculator Work?

The calculator uses the CPO formula:

Where:

• \( MAP \) — Mean Arterial Pressure (mmHg)
• \( CO \) — Cardiac Output (L/min)
• 451 — Conversion factor to watts

Explanation: This formula quantifies the hydraulic power generated by the heart to pump blood through the circulatory system.

3. Importance of CPO Calculation

Details: CPO is an important prognostic indicator in heart failure patients and provides valuable information about cardiac performance beyond standard hemodynamic measurements.

4. Using the Calculator

Tips: Enter mean arterial pressure in mmHg and cardiac output in L/min. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is a normal CPO value?
A: Normal CPO values typically range between 0.8-1.2 W in healthy adults at rest.

Q2: How is CPO different from cardiac output?
A: While cardiac output measures blood flow volume, CPO incorporates pressure work, providing a more comprehensive assessment of cardiac performance.

Q3: When is CPO measurement most useful?
A: CPO is particularly valuable in assessing patients with heart failure, cardiogenic shock, and during hemodynamic monitoring in critical care settings.

Q4: What factors can affect CPO?
A: CPO can be influenced by preload, afterload, contractility, heart rate, and vascular resistance.

Q5: How often should CPO be measured?
A: The frequency of CPO measurement depends on the clinical context, but it's typically monitored during acute hemodynamic instability or when titrating vasoactive medications.