Why the study?
Does varying frame rate affect the reproducibility of 2DSTE-derived RV and LV longitudinal strain and strain rate in premature infants?
Population
20 premature infants (26 ± 1 weeks) with heart rate 163 ± 13 bpm
Comparison
2D speckle tracking echocardiography acquired at… vs Comparison between different frame rates
Design
Cross-sectional
Authors
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Supports optimizing frame rates for strain reproducibility in premature infants; leaves open prospective multicenter validation.
Does varying frame rate affect the reproducibility of 2DSTE-derived RV and LV longitudinal strain and strain rate in premature infants?
In premature infants with high heart rates, 2DSTE-derived myocardial deformation imaging is most reproducible when acquired at a frame rate to heart rate ratio between 0.7 and 0.9 frames/sec per bpm.
Sanchez et al. (2014) studied this question.
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