Recent studies have demonstrated the utility of diastolic stress echocardiography in evaluating diastolic dysfunction during exercise in adults. However, there have been no such reports in infants.
This study determined whether measuring cardiac function using echocardiography during bottle feeding is a valid method of stress testing in infants with congenital heart disease.
The show that their findings indicate that stress echocardiography during bottle-feeding might be a substitute for diastolic stress echocardiography in infants.
The VSD or RVOT peak velocity, and FC% in IVP D and IVPG are sensitive markers for cardiac function in infants with congenital heart disease.

S Iwashima, J Katuki, J Katuki, S Hayno, S Hayno, K Seki, K Seki, K Takahashi, K Takahashi, "Novel method of diastolic stress echocardiography during bottle-feeding for infants with congenital heart disease", European Heart Journal - Cardiovascular Imaging, Published Online (2022) https://doi.org/10.1093/ehjci/jeab289.279.