The formula to calculate the Left Ventricular Ejection Fraction (LVEF) is:
\[ \text{LVEF} = \left( \frac{7.0}{2.4 + \text{LVIDd}} \right) \times \text{LVIDd}^3 \times 100\% \]
Where:
The Teichholz formula is a mathematical equation used in cardiology to estimate the left ventricular ejection fraction (LVEF), which is a measure of the percentage of blood leaving the heart each time it contracts. The LVEF is an important diagnostic tool in assessing heart function, particularly in patients with heart disease. The Teichholz formula is based on measurements taken from an echocardiogram, specifically the left ventricular internal dimension at end-diastole (LVIDd).
Let's assume the following value:
Using the formula:
\[ \text{LVEF} = \left( \frac{7.0}{2.4 + 5.0} \right) \times 5.0^3 \times 100 = \left( \frac{7.0}{7.4} \right) \times 125 \times 100 \approx 118.92\% \]
The Left Ventricular Ejection Fraction (LVEF) is approximately 118.92%.
