Chromosomal anomalies, syndromes and extracardiac malformations occurred in nearly one-fourth of CHD cases. Muscular VSDs had a low prevalence of such conditions. The prevalence of CHDs with chromosomal trisomies increased, and was probably related to an increasing age of women giving birth.
In a population-based study of 35,218 infants born alive during the 15 years from 1982 to 1996, 353 (1%) were diagnosed as having a congenital heart defect, of whom 84 (24%) were diagnosed subsequent to discharge from hospital after birth (2.4/1000). Of these, 40 (48%) had a ventricular septal defect, 14 (17%) an atrial septal defect, 9 (11%) a patent arterial duct, 8 (10%) an aortic stenosis and 13 (15%) other defects. Compared with those in whom diagnosis was made before discharge, the group of patients with defects detected late had an increased prevalence of atrial septal defects, patent arterial duct and aortic stenosis, but less decreased prevalence of ventricular septal defects (p< 0.05). Median age at detection of the defects subsequent to discharge was 6 months (range 2 weeks-11 years). Seven patients (8%) presented with clinical symptoms of cardiac decompensation. The mortality rate was significantly lower in those in whom defects were detected late (1/84; 1%) as compared with those detected immediately after birth (37/269; 14%) (p < 0.05). The total rate for early detection was the same after using one clinical examination (8.2/1000) of newborns as our basic routine instead of two (7.1/1000) (p > 0.05). A substantial proportion of congenital cardiac malformations are detected after discharge from hospital after birth. Some patients with these lesions present with cardiac decompensation and are in need of medication and surgery. One clinical examination of newborns detects congenital malformations of the heart as efficient as two.
Severe neurological handicaps in children are frequently accompanied by growth retardation. We have studied 13 severely neurologically impaired children in an institution to see if their poor growth was related to a low intake of energy and nutrients, if this was reflected in biochemical nutritional parameters, and to modify their diet according to the results. The investigation showed low dietary intakes of energy and of several of the nutrients, with corresponding low Hb values and serum values of ferritin, selenium and vitamins E and D in some of the children. All the children were initially light for age, with catch-up growth after intervention. We conclude that severely disabled children are at high risk for under- and malnutrition, and that this may partly explain the growth retardation in the study group. To avoid the potential detrimental effects of malnutrition, it is important to aim at providing an optimal diet.
Invasive data obtained in children with complete atrioventricular septal defect over the last three years are presented to determine the age at which pulmonary vascular obstructive disease develops. Comparisons were made between children with (n = 21) and without Down's syndrome (n = 12). The investigation was restricted to patients less than one year of age at initial catheterization. Patients with complicated associated heart defects were excluded. Patients with Down's syndrome had a higher ratio of pulmonary to systemic vascular resistance than children without Down's syndrome in the basal situation. This difference almost disappeared after 100% oxygen had been given to patients with elevated pulmonary vascular resistance, indicating that hypoxia and/or hypoventilation is of importance, especially in children with Down's syndrome. Fixed elevated pulmonary vascular resistance was found in 11% of Down patients under one year, with the youngest patient being 5.5 months old. One child without Down's syndrome may have had fixed elevated pulmonary vascular resistance. It is concluded that all children with complete atrioventricular septal defect should be evaluated and operated on at a very young age.
Essential fatty acids (EFA) are important for the normal development and functioning of the brain, retina and immune competent cells. Severely neurologically handicapped children often have feeding difficulties, and the composition of the diet may be critical with respect to an optimal nutrient content. The aim of the present investigation was to evaluate if the dietary intakes and serum phospholipid concentrations of EFA were adequate in a group of severely neurologically impaired children in an institution. To achieve this, a prospective study was done. The investigation showed low dietary intakes of both n-6 fatty acids (FA) and n-3 FA. The serum concentrations of total n-6 FA, linoleic acid and 22:6n-3 (docosahexaenoic acid) as proportions of the total serum phospholipid FA concentration were initially low. The serum concentrations of 20:3n-9 and 22:5n-6 cholesterol, triacylglycerol, total saturated FA, total monounsaturated FA and apolipoproteins A-I and B were high compared with levels in a reference group of healthy children. Following supplementation with fish oil and soyabean oil, the serum lipid profile approached normal. We conclude that the study children had suboptimal intakes of EFA and that elevated serum concentrations of 20:3n-9 and 22:5n6 were useful serological markers of suboptimal EFA status. Recommended dietary allowances for EFA given as a percentage of energy underestimate EFA requirements in children with a low energy intake. Severely disabled children with feeding difficulties should probably be monitored with serum phospholipid FA measurements or calculation of dietary absolute intakes of EFA.
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