Frecuencia y tendencia temporal de los defectos congénitos en Asturias. La necesidad de la vigilancia clinicoepidemiológica

Health status and barriers in health care for children with birth defects born between 2011 and 2017 in two institutions in Cali

Introducción.

Los defectos congénitos afectan entre el 2 y el 3 % de los recién nacidos, y son una carga importante entre las causas de morbilidad y mortalidad infantil en los primeros cinco años de vida. En Colombia, fueron la segunda causa de mortalidad infantil según los reportes del Departamento Administrativo Nacional de Estadística (DANE) para el 2011.

Objetivo.

Describir el estado de salud y las barreras en la atención de niños con defectos congénitos nacidos entre el 2011 y el 2017 en dos instituciones de salud de Cali.

Materiales y métodos.

Se hizo un estudio observacional descriptivo de corte transversal. Se incluyeron los nacidos entre enero de 2011 y diciembre de 2017 con, al menos, un defecto congénito, a quienes se les hizo seguimiento telefónico.

Resultados.

De 54.193 nacidos en el período analizado, 1.389 (2,56 %) tenían, por lo menos, un defecto congénito. Todos los casos se clasificaron según la escala de pronóstico y se incluyeron 881 en el seguimiento. El defecto congénito más frecuente fue la malformación congénita cardíaca, con 88 (9,99 %) casos; en segundo lugar, las malformaciones o defectos del riñón, con 73 (8,29 %) casos; en tercer lugar, el síndrome de Down, con 72 (8,17 %) casos, y en cuarto lugar, las anormalidades testiculares, con 56 (6,36 %). Ciento sesenta y uno (35,46 %) de los cuidadores de los 454 casos con seguimiento efectivo, manifestaron haber encontrado, por lo menos, un tipo de barrera en la atención.

Conclusión.

Se deben implementar programas de seguimiento de los pacientes con defectos congénitos, que contribuyan a disminuir la morbimortalidad.

[Chromosomal anomalies: The experience of the Congenital Anomalies Registry of the Valencia Region]

OBJECTIVE

To describe the temporal trend and distribution of chromosomal congenital abnormalities (CA) in the Valencia Region, in less than one year olds, during the period 2007-2011.

METHODOLOGY

Live births, still births and termination of pregnancy due to foetal anomaly between 2007 and 2011 with chromosomal CA (Q90-Q99.9 codes of the 10th International Classification of Diseases -British Paediatric Association) were selected from the CA population-based Registry of Valencia Region The prevalence per 10,000 births for the chromosomal CA and for the different types of chromosomal syndromes with 95% confidence intervals was calculated. The analysis was performed by calculating prevalences and data were compared using Pearson Chi-squared test.

RESULTS

A total of 895 cases were found, representing a prevalence of 33.5 per 10,000 births (95% CI: 31.0-35.9), highlighting five syndromes: Down's, Edward's, Patau, Turner and Klinefelter. The prevalence of chromosomal CA and Down's syndrome were stable over the period, except in 2010. Down's was the most frequent chromosomal CA (67% of the cases), and the most frequent termination of pregnancy type was for foetal anomaly (69%). Cardiac heart defects represented 70.3% of the associated congenital anomalies. Mothers of children with chromosomal CA were mainly Spanish (73.3%). The age group of mothers over 39 years had a higher prevalence (133.0 per 10,000 births). The province of Castellón had the highest prevalence, 39.1 per 10,000 births.

CONCLUSIONS

The prevalence has remained stable over the five years, excluding the significant decline in 2010, for chromosomal CA detected and two of the major syndromes. The chromosomal CA are an important public health problem as they represent 15% of all CA identified in the Valencia Region, and agrees with the European data.

[Evolution of the frequency of congenital defects in newborn infants and fetuses from terminations of pregnancy after prenatal diagnosis in the period 1982-2009]

BACKGROUND AND OBJECTIVE

The study of congenital defects (CD) must include termination of pregnancy (TOP) for CD and evaluate risk factors that modify their frequency.

PATIENTS AND METHODS

Consecutive series of 517 newborn and 202 TOP with CD among 38,191 childbirths, between 1982-2009 years.

RESULTS

The mean frequency for newborns with CD is 13.54‰ and for newborn and TOP with CD is 18.73‰. Single CD are 61.12% in newborns and 52.17% in TOP. The 18.37% of CD in newborn and 40.58% of TOP are syndromic. Mean gestational age for TOP is 17.92 weeks. Overall frequency of anencephaly is 2.62‰ for newborns and 6.77 for 10,000 for newborns and TOP. Spina bifida is 3.14 for 10,000 newborns and 5.99 for 10,000 newborns and TOP. Overall frequency of Down syndrome (DS) is 10.74 for 10,000 newborns and 22.14 for 10,000 newborns and TOP. The percentage of foreign mothers was 35.9% in 2009 and the mean maternal age significantly increased in this period.

CONCLUSION

We observe a significant decrease of CD in newborns but not in their conception. We have not detected primary prevention for neural tube defects. The decrease in DS in newborns is not statistically relevant but ethnic diversity and maternal aging may be modifying the frequency. The 53% of CD were TOP in the period 2007-2009. It is mandatory a complete study for CD in TOP in order to offer serious reproductive counselling.

[Temporal variation and geographical distribution: congenital heart defects in the Comunitat Valenciana]

OBJECTIVES

The objective of this study is to estimate the prevalence of congenital heart defects (CHD) in the Comunitat Valenciana (CV) in children less than one year old and identify whether there are temporal and geographic variations within this prevalence.

METHODS

The minimum basic data set from hospital discharge reports was used to select patients, who were born between 1999-2008, were less than one year old, and who lived in the CV with at least one hospital admission in which the primary diagnosis and/or any of the events were coded as CHD (codes 745-747 of the International Classification of Diseases 9th Revision Clinical Modification). The first hospital discharge report with CHD was selected, using the health card number to detect duplication. The prevalence and 95% confidence intervals were calculated, and the prevalence ratio (PR) and smoothed PR was obtained for each municipality to identify geographic patterns.

RESULTS

In the period 1999-2008 there were 6.377 patients younger than one year with some CHD, representing the 43.2% of cases of congenital anomalies. The prevalence was 134.3 per 10.000 live births (95% CI: 131.1-137.6). There was a significant increase in the prevalence, from 115.8 in the 1999-2003 period to 149.5 in the 2004-2008 period. A higher risk was identified in the north of the CV, and in some municipalities of the province of Alicante, in the south.

CONCLUSIONS

The observed increase in CHD agrees with the findings in other countries and it can be explained, at least in part, by improved diagnostic techniques. The geographic pattern identified requires a more detailed analysis that could explain the geographic variations found.

[Frequency and clinical presentation of congenital ocular anomalies in Asturias 1990-2004]

INTRODUCTION

Congenital ocular anomalies (COAs) can produce serious disability.

OBJECTIVE

The purpose of this investigation was to assess the prevalence of COAs, their trends and to describe the associated malformations and syndromes in a geographically defined population.

METHOD

Data from the Asturias Registry of Congenital Defects were used. The period studied was from 1990 to 2004 and the study population the 103,452 births of mothers living in the region. Total prevalence was calculated.

RESULTS

A total of 3035 cases with congenital defects were recorded, of these 70 had COAs. The total prevalence was 6.8 per 10000 births, with a stable trend during this period. The most common COAs were: congenital cataract (2.0 per 10000 births), anophthalmos/microphthalmos (1.4 per 10000 births) and coloboma (1.3 per 10000 births). 40% of COAs occurred as isolated defects, 37% were syndromes and 23% were associated with other congenital defects.

CONCLUSIONS

The prevalence of COAs in Asturias over this period had a stable trend and the congenital cataract was the commonest COAs. COAs, particularly the anophthalmos/microphthalmos were associated with other congenital anomalies.

[Prevalence of neural tube defects in Asturias (Spain): impact of prenatal diagnosis]

OBJECTIVE

To describe the frequency and prevalence trend for neural tube defects (NTD) (anencephaly, spina bifida and encephalocele) in Asturias (Spain), as well as the impact of prenatal diagnosis programs.

METHODS

All cases of NTD in births and induced abortions were studied, using data from the Registry of Congenital Defects of Asturias for 1990-2004. Total and birth prevalence rates were calculated.

RESULTS

The prevalence of NTD for 1990-2004 was 12.2 per 10,000 births (5.9 anencephaly, 5.0 spina bifida and 1.3 encephalocele) and showed a slightly decreasing trend due to a significant decline in spina bifida prevalence. The prevalence of anencephaly and encephalocele remained stable. The percentage of induced abortions after prenatal diagnosis among all NTD was 88% (anencephaly 96.7%, spina bifida 80% and encephalocele 84.6%), leading to a very low birth prevalence (1.4 per 10,000) for the entire period.

CONCLUSIONS

The total prevalence of spina bifida has decreased in the last 15 years in Asturias. Secondary prevention through prenatal diagnosis and interruption of affected pregnancies have resulted in a marked decrease in NTD at birth. The recommendation of periconceptional use of folic acid seems not to have achieved the desired effect.