Keyphrases
Preterm Infants
100%
Chronic Lung Disease
100%
Pulmonary Artery Pressure
100%
Right Ventricular Ejection
50%
Ejection Time
50%
Time Ratio
50%
Acceleration Time
50%
Healthy Preterm
33%
Prematurity
16%
No Significant Difference
8%
Rate of Change
8%
Oxygen Therapy
8%
Respiratory Distress Syndrome
8%
Supplemental Oxygen
8%
Increasing Age
8%
Multivariate Analysis
8%
Healthy children
8%
Natural History
8%
Velocity Waveform
8%
Doppler Echocardiography
8%
Serial Assessment
8%
Pulmonary Artery
8%
Pulmonary Hypertension
8%
Immunology and Microbiology
Medicine and Dentistry
Doppler Echocardiography
8%
Pharmacology, Toxicology and Pharmaceutical Science
Pulmonary Hypertension
8%