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- Elsmén, Emma, et al.
(författare)
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Sex and gender differences in newborn infants: why are boys at increased risk?
- 2004
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Ingår i: Journal of Men's Health & Gender. - : Mary Ann Liebert Inc. - 1571-8913. ; 1:4, s. 303-311
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Tidskriftsartikel (refereegranskat)abstract
- Newborn boys have higher morbidity and mortality than girls. Several studies have shown that male newborn sex is an independent risk factor for adverse outcome. The specific mechanisms leading to the increased risks for newborn boys are not known. However, several sex-specific reactions and physiologic responses have been described in both the fetus and newborn infants. Some of these differences persist during childhood; although later other sex and gender-specific differences become more important. Recently, the research aiming at explaining the vulnerability in male infants has been intensified. Experimental data from newborn animals have shown that many sex differences can be explained by differences in hormonal function and stress responses. However, if these findings apply to humans as well is not yet known. The aim of this paper is to review literature on very early sex-specific differences and shed some light on the increased risks for male fetuses and newborn boys.
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- Hellström-Westas, Lena, et al.
(författare)
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Amplitude-integrated encephalography in pyridoxine-dependent seizures and pyridoxine-responsive seizures.
- 2002
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Ingår i: Acta Pædiatrica. - : Wiley. - 1651-2227 .- 0803-5253. ; 91:8, s. 977-980
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Tidskriftsartikel (refereegranskat)abstract
- Pyridoxine-dependent seizures are rare in newborn infants, although recent data suggest that the prevalence probably is underestimated. In all newborn infants with recurrent epileptic seizures the general recommendation is to administer pyridoxine and simultaneously record an electroencephalogram (EEG). Conclusion: One infant with pyridoxine-responsive seizures and another with pyridoxine-dependent seizures had different electroclinical responses on amplitude-integrated EEG monitoring (aEEG) when pyridoxine was administered.
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- Hellström-Westas, Lena, et al.
(författare)
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Early prediction of outcome with aEEG in preterm infants with large intraventricular hemorrhages
- 2001
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Ingår i: Neuropediatrics. - : Georg Thieme Verlag KG. - 0174-304X .- 1439-1899. ; 32:6, s. 319-324
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: The electrocortical background contains prognostic information in full-term asphyxiated newborn infants already during the first postnatal hours. In preterm infants with intra-ventricular hemorrhages (IVH) the background activity in EEG and amplitude-integrated EEG (aEEG) is depressed during the first days of life, and the extent of the depression correlates with the degree of IVH. However, it has not been previously evaluated whether very early aEEG can predict later outcome also in pre-term infants. OBJECTIVE: To investigate if early prediction of outcome is possible from aEEG in preterm infants with large IVH. METHODS: aEEG recordings from the first postnatal week were investigated in 64 preterm infants with IVH grade III - IV. For every 24-hour period the aEEG background pattern was classified, and the maximum and minimum numbers of bursts/h, respectively,were counted. Outcome was divided into three categories: died (n = 36), survived (n = 28) with "poor" outcome, i.e., severe cerebral palsy and not able to walk and/or mental retardation (n = 8), and survived with "fair" outcome, i.e., healthy or mild cerebral palsy (n = 19). One surviving child was lost in the follow-up. RESULTS: There were significant differences in maximum bursts/h (MaxB) at 0-24 hours (p = 0.033), 24-48 hours (p = 0.011), 48-72 hours (p=0.049) and 72-96 hours (p=0.032), respectively, between the infants who died and the surviving infants. At 24-48 hours the median (range) MaxB in the surviving infants with "fair" outcome was 156 (103-179) versus 102 (73-156) in the surviving infants with "poor" outcome (p = 0.002). With the assumption that MaxB < 130 was predictive of death or survival with "poor" outcome, 68 % and 78% of infants were correctly predicted at 0-24 hours and 24-48 hours, respectively. CONCLUSIONS: This study shows that outcome may be predicted with aEEG already during the first days of life in preterm infants with large IVH. The findings should be confirmed in prospective studies since they may have clinical implications if specific medical interventions become available.
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- Hellström-Westas, Lena, et al.
(författare)
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Long-distance transports of newborn infants with congenital heart disease
- 2001
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Ingår i: Pediatric Cardiology. - : Springer Science and Business Media LLC. - 0172-0643 .- 1432-1971. ; 22:5, s. 380-384
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Tidskriftsartikel (refereegranskat)abstract
- Little has been published about specific problems that may occur during long-distance transports of newborn cardiac patients. During a 4-year period after centralization of pediatric heart surgery in Sweden, 286 transports were prospectively investigated. A majority (77.3%) of the transports were carried out by nonspecialized teams. Ten severe adverse events, including the death of 1 infant, occurred during the 286 transports (3.5%). Another infant died later of cerebral complications from hypoxia, rendering a transport-related mortality of 0.7%. Twenty-two infants (7.7%) were severely hypoxic (oxygen saturation < or =65%) at arrival, and 12 of these infants suffered from transposition of the great arteries. During the second 2-year period increased use of intravenous prostaglandin E1 and transportation from tertiary-level units was associated with better transport outcome. During the same time period, overall 30-day postoperative mortality for pediatric cardiac surgery decreased from 4.0% to 1.2% in our hospital. When highly specialized treatment is centralized for quality reasons it is also important that risks associated with transport are considered and that the quality of transport is high. For some cardiac malformations antenatal diagnosis and referral of the mother for delivery to a center with pediatric cardiac surgery would probably further increase the chance of healthy survival in some infants.
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