Coronary Heart Disease Risk Calculator

Coronary Heart Disease Risk Calculator: Core Functions and Principles

Patients with cardiovascular diseases often overlook the combined risk of multiple indicators. This tool calculates the coronary heart disease (CHD) risk index and outputs a risk assessment based on clinical parameters such as age, systolic blood pressure, total cholesterol, and high-density lipoprotein (HDL). The CHD index is a quantitative indicator that comprehensively reflects cardiovascular health risks, used for the initial screening of potential disease likelihood.

Why Choose Our CHD Risk Calculator?

• Comprehensive Multi-Parameter Assessment: Supports the input of four core clinical data points: age, blood pressure, total cholesterol, and HDL.
• Instant Risk Feedback: Calculates and displays your current risk level (e.g., low, moderate, or high risk) in real time.
• Professional Medical Algorithm: Results are calculated based on clinically validated coronary heart disease risk assessment models.

How to Use the Tool

1. Enter your actual age in the age input box (in years).
2. Input your systolic blood pressure value (in mmHg).
3. Enter your total cholesterol test value (in mmol/L).
4. Provide your high-density lipoprotein (HDL) test value (in mmol/L).
5. The system will automatically calculate and display your coronary heart disease risk index and risk level.

Frequently Asked Questions (FAQ)

• Q: What if my test report uses mg/dL?
  A: You need to convert it to mmol/L. Total cholesterol conversion formula: mmol/L = mg/dL ÷ 38.67; HDL conversion formula: mmol/L = mg/dL ÷ 38.67.
• Q: Can the calculation results replace a medical diagnosis?
  A: No. This tool is for risk assessment reference only. An actual diagnosis requires clinical examinations, medical history, and a doctor's judgment. For example, if the index indicates a high risk, it is recommended to seek medical attention promptly rather than self-diagnosing.

Important Notes

The age input range is 18-100 years, blood pressure must be ≥90 mmHg, and cholesterol and HDL must fall within standard medical testing ranges. The results do not replace professional medical diagnoses. Sensitive data is processed locally and is not stored. Batch assessments require multiple independent operations.

Technical Notes & Usage Recommendations

Clinical validation shows that the risk increases significantly when total cholesterol is >5.2 mmol/L and HDL is <1.0 mmol/L. Typical input example: A 50-year-old patient with a systolic blood pressure of 120 mmHg, total cholesterol of 5.0 mmol/L, and HDL of 1.5 mmol/L corresponds to a moderate risk level. We recommend testing regularly and tracking trend changes.