Tei Index

Q: What is Tei Index?


Answer:  The Tei index is increasingly used to evaluate and described cardiac function. The Tei index is easily derived using conventional pulsed Doppler echocardiography. It is Doppler-derived time interval index that combines both systolic and diastolic cardiac performance. The mean normal value of the Tei index is

• 0.39 ± 0.05 for the LV, and
• 0.28 ± 0.04.11 for the RV

Higher index values correspond to more pathological states with overall cardiac dysfunction.