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Echocardiographic evaluation of right ventricular function in preterm infants with bronchopulmonary dysplasia
Author(s) -
Bokiniec Renata,
Własienko Paweł,
BorszewskaKornacka Maria,
SzymkiewiczDangel Joanna
Publication year - 2017
Publication title -
echocardiography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 62
eISSN - 1540-8175
pISSN - 0742-2822
DOI - 10.1111/echo.13489
Subject(s) - bronchopulmonary dysplasia , medicine , cardiology , doppler echocardiography , dysplasia , pulmonary function testing , diastole , gestational age , blood pressure , pregnancy , genetics , biology
Aim To evaluate right ventricular function in preterm infants with and without bronchopulmonary dysplasia. Methods Eighty‐nine preterm infants (<32 weeks) were divided into three groups: (1) no‐bronchopulmonary dysplasia (n=32); (2) mild‐bronchopulmonary dysplasia (n=35); (3) severe‐bronchopulmonary dysplasia (n=15). Right ventricular echocardiographic parameters included the following: (1) pulsed‐wave Doppler through the tricuspid valve (E/A ratio), pulmonary artery acceleration time, right ventricular ejection time, right ventricular velocity‐time integral; (2) tissue Doppler measurements of myocardial velocities and atrioventricular conduction times; (3) pulsed‐wave Doppler and tissue Doppler evaluation of myocardial performance index and E/Eʹ ratio; and (4) M‐mode detection of right ventricular end‐diastolic wall diameter. Results The severe‐bronchopulmonary dysplasia group had higher mean right ventricular myocardial performance index (on the 28th day of life by pulsed‐wave Doppler) than the no‐bronchopulmonary dysplasia ( P =.014) or mild‐bronchopulmonary dysplasia ( P =.031) groups; no differences were found between no‐bronchopulmonary dysplasia and mild‐bronchopulmonary dysplasia groups ( P =.919). A reduction in right ventricular myocardial performance index at later time points was observed in all three groups ( P <.05). We found no differences between preterm infants with differing bronchopulmonary dysplasia severity in other right ventricular echocardiographic parameters. Conclusion Right ventricular myocardial performance index measured by pulsed‐wave Doppler indicates impaired right ventricular function in preterm infants with severe bronchopulmonary dysplasia.