Retinopathy of prematurity
Conditions
Interventions
None listed
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: Pretern infants,less tha 31weeks postconceptional age, who are hospitalized in the neonatal intensive care unit at Tokyo Metropolitan Children's Medical center, Tokyo Metropolitan Bokutoh Hospital and Tokyo Metropolitan Ohtsuka Hospital are eligible for enrollment.Written informed consent was obtained from parent of each neonate.
Exclusion criteria
Exclusion criteria: 1.neonate with chromosomal anomaly 2.neonate with multiple malformation 3.neonate with ophthalmogic abnormality 4.neonate who is judged to be inappropriate as sublect.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| We examine relations between tryptase level and onset of the retinopahy of prematurity. | — |
Secondary
| Measure | Time frame |
|---|---|
| 1.We examine relations between tryptase level and gestational age and birth weight. 2.Postnatal change of the tryptase level. 3.We examine relations between tryptase level and severity of the retinopathy of prematurity. | — |
Countries
Japan
Contacts
Tokyo Metropolitan children's Medical Center Department of Neonatology