This study described the perinatal high-risk factors and clinical manifestations of the children, and compared the high-risk factors, clinical manifestations and prognosis of BPD among different clinical subtypes by comparison between groups. BPD grading was performed using the 2018 grading standard to compare the distribution of I/II/III BPD among different groups.
Study Type
OBSERVATIONAL
Enrollment
300
Children's hospital of Chongqing Medical University
Chongqing, Chongqing Municipality, China
Mortality
Different subtype of BPD infants against the total BPD infants in corresponding group
Time frame: up to 12 months after birth
Serious respiratory mobidities
occurence of at least one of the following: tracheostomy, continued hospitalization for respiratory reasons at or beyond 50weeks PMA; continued oxygen supplement or respiratory support beyond 12months after birth; readmission for respiratory reasons.
Time frame: up to 18 months after birth
Duration of first hospital stay
days between admission and first discharge
Time frame: up to 12 months after birth
Days with oxygen supplement
days during which the infants were given oxygen
Time frame: up to 12 months after birth
Days of Mechanical Ventilation
days during which the infants were given mechanical ventilation
Time frame: up to 12 months after birth
weight
the measure of infant's length
Time frame: up to 18months after birth
length
the measure of infant's weight
Time frame: up to 18months after birth
head circumference
the measure of infant's head circumference, which is the occipital-frontal circumference
Time frame: up to 18months after birth
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