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Increased morbidity and mortality in very preterm/VLBW infants with congenital heart disease
Angelo Polito1, Simone Piga, Paola E Cogo
1Cardiac Intensive Care Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy.
Insights
Congenital heart diseases (CHD) in very preterm/very low birth weight (VLBW) infants increase the risk of death and serious morbidities. These findings aid in tailoring care for these vulnerable infants.
Area of Science:
- Neonatalogy
- Pediatric Cardiology
- Public Health
Background:
- Congenital heart diseases (CHD) are a significant concern in neonatal care.
- Very preterm and very low birth weight (VLBW) infants represent a vulnerable population with unique health challenges.
Purpose of the Study:
- To investigate the association between congenital heart diseases (CHD) and in-hospital mortality and morbidity in very preterm/very low birth weight (VLBW) infants.
- To determine if CHD independently increases the risk of adverse outcomes in this population.
Main Methods:
- A prospective cohort study (ACTION) included 3,684 infants with gestational age 22-31 weeks or birth weight <1,500 g.
- Congenital heart diseases (CHD) were coded using ICD9-CM.
- Multivariable logistic regression analyses were employed to assess the relationship between CHD and mortality/morbidity, adjusting for confounders.
Main Results:
- Congenital heart diseases (CHD) were identified in 71 infants (19.3 ‰).
- CHD patients had higher gestational age and increased frequency of being small for gestational age (SGA).
- Adjusted analyses revealed significantly higher likelihood of infection, bronchopulmonary dysplasia (BPD), retinopathy of prematurity (ROP), and hospital mortality in CHD infants.
Conclusions:
- Congenital heart diseases (CHD) are more prevalent in very preterm/VLBW infants than in the general liveborn population.
- CHD independently confers an increased risk of death and serious morbidities in this cohort.
- Findings support improved prognostic assessment and tailored interventions for preterm infants with CHD.
Purpose:
To study the association between congenital heart diseases (CHD) and in-hospital mortality and morbidity of very preterm/very low birth weight (VLBW) infants.
Methods:
The area-based prospective cohort study ACTION included all infants with gestational age (GA) 22-31 weeks or birth weight <1,500 g admitted to neonatal care between July 2003 and June 2005 in six Italian regions (n = 3,684). CHD were coded according to ICD9-CM. Cluster multivariable logistic regression analyses were used to assess the relationship between CHD and mortality and selected morbidities [neonatal infection, ultrasound brain abnormalities, retinopathy of prematurity (ROP), and bronchopulmonary dysplasia (BPD)] adjusting for potential confounders.
Results:
Seventy-one patients had CHD [19.3 ‰, 95 % confidence interval (CI) 15.1-24.2 ‰]. The most common lesions were isolated atrial and ventricular septal defects (31.1 and 26.8 %, respectively), pulmonary valvar stenosis (12.7 %), and tetralogy of Fallot (5.6 %). Compared with other infants, CHD patients showed significantly higher GA and frequency of small for gestational age (SGA, i.e., birth weight ≤3rd centile). After adjustment for GA, sex, SGA, presence of extracardiac malformations or chromosomal anomalies, and region of birth, CHD patients had a significantly higher likelihood of infection, BPD, ROP, and, after 27 weeks gestation only, hospital mortality. The increased risk of ROP appeared to be partly due to infection.
Conclusions:
In very preterm/VLBW infants CHD are more prevalent than in the general liveborn population, and confer an increased risk of death and serious morbidities independently of other risk factors. These results may be useful to better tailor prognostic assessment and diagnostic and therapeutic interventions for these children.
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