[Measurement of tidal breathing pulmonary function in premature infants with different gestational ages]
Ling Ji1, Li-Ya Ma, Na-Na Huang
1Third Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China. jiling1225@126.com.
Insights
Premature infants show impaired tidal breathing pulmonary function, with lower gestational age correlating to more significant deficits. These differences persist even at corrected gestational age.
Area of Science:
- Neonatal Physiology
- Respiratory Medicine
- Pediatric Pulmonology
Context:
- Premature birth affects neonatal respiratory system development.
- Tidal breathing is a key indicator of infant lung function.
- Gestational age is a critical factor in pulmonary maturation.
Purpose:
- To evaluate tidal breathing pulmonary function in premature infants.
- To compare pulmonary function across different gestational age groups.
- To assess the long-term impact of prematurity on lung function.
Summary:
- Premature infants (<32, 32-33, 34-36 weeks) and full-term infants (control) underwent tidal breathing pulmonary function tests.
- At 3-5 days and 40 weeks corrected age, premature infants exhibited significantly lower inspiratory time, time to peak tidal expiratory flow (tPTEF), and tPTEF/tE ratio compared to controls.
- Lower gestational age was associated with more pronounced impairments in these pulmonary function parameters.
Impact:
- Gestational age significantly influences neonatal tidal breathing pulmonary function.
- Premature infants experience persistent, dose-dependent impairment of lung function.
- Findings highlight the need for monitoring and potential interventions for respiratory health in preterm populations.
Objective:
To investigate the characteristics of the tidal breathing pulmonary function in premature infants with different gestational ages.
Methods:
A total of 75 premature infants were classified into three groups according to their gestational ages: <32 weeks, 32-33(+6) weeks and 34-36(+6) weeks. Fifty-five full-term infants (39-40 weeks group) were selected as the control group. All infants were given the tidal breathing pulmonary function test at 3-5 days after birth. Moreover, all infants were given the tidal breathing pulmonary function test again at 40 weeks of the corrected gestational age.
Results:
At 3-5 days after birth, the three groups of premature infants had significantly lower inspiratory time, time to peak tidal expiratory flow (tPTEF), and ratio of tPTEF to total expiratory time (tPTEF/tE) than the control group (P<0.05). The parameter values of the tidal breathing pulmonary function were lower when the gestational age was lower. Even at 40 weeks of the corrected gestational age, the three groups of premature infants still had significantly lower tPTEF and tPTEF/tE than the control group (P<0.05).
Conclusions:
The tidal breathing pulmonary function of neonates is influenced by the gestational age. The tidal breathing pulmonary function of premature infants is obviously impaired, and the lower the gestational age, the more obvious the impairment.
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