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  • 1
    ISSN: 1433-0474
    Schlagwort(e): Schlüsselwörter Extrem Frühgeborene ; Visus ; Strabismus ; Amblyopie ; Retinopathie ; Key words Extremely low birth weight infants ; Strabismus ; Vision ; Amblyopia ; Retinopathy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Summary Aim of the study: The goal of this study was to assess the prevalence of ophthalmological abnormalities in 10 year old survivors with extremely low birthweight of 500–999 g. In addition the association between retinopathy of prematurity and other ophthalmological disorders was studied. Methods: The parents of all surviving newborns (N=117) with birthweight 500–999 g born in Switzerland between 1983 and 1985, were asked for eye problems in their children. When the history was positive, additional information was obtained from the ophthalmologist. Results: At the age of 10±1 years the very low birthweight infants had significantly more ophthalmological problems (37%) than found in the general population (10%). Whereas low vision ( 〈1.0) of at least one eye (35%), strabism (19%), amblyopia (11%) and astigmatism (7.5%) were significantly more frequent compared with the normal population, myopia (12%) was not. Retinopathy was not significantly associated with other ophthalmological disorders. Conclusions: We conclude that all extremely low birth weight infants irrespectively of retinopathy have a significantly increased risk for ophthalmological disorders. Therefore they should have regular ophthalmological reevaluations until school age.
    Notizen: Zusammenfassung Fragestellung: Wie häufig sind ophthalmologische Störungen bei ehemals sehr kleinen Frühgeborenen im Alter von 10 Jahren? Bestehen Assoziationen zu einer durchgemachten Frühgeborenenretinopathie? Methode: Die Eltern aller überlebenden Frühgeborenen (n=117), die in den Jahren von 1983–1985 in der Schweiz mit einem Geburtsgewicht zwischen 500–999 g geboren worden waren, wurden nach Augenproblemen ihrer Kinder befragt. Bei positiver Anamnese wurden zusätzliche Informationen vom Ophthalmologen eingeholt. Ergebnisse: Die Frühgeborenen zeigten im Alter von 10±1 Jahren hochsignifikant mehr ophthalmologische Störungen (37%) als die Durchschnittsbevölkerung (10%). Signifikant häufiger waren Visusminderung (35%), Strabismus (19%), Amblyopie (11%) und Astigmatismus (18%). Die Myopierate (12%) war nicht wesentlich erhöht. Nach einer durchgemachten Retinopathie waren die Werte noch höher, die Unterschiede zu ehemaligen Frühgeborenen ohne Retinopathie waren jedoch nicht signifikant. Schlußfolgerung: Sehr kleine Frühgeborene weisen ein deutlich erhöhtes Risiko für ophthalmologische Störungen auf und nicht nur, wenn in der Neonatalperiode eine Retinopathie nachgewiesen wurde. Sie sollten deshalb alle mindestens bis ins Schulalter regelmäßig ophthalmologisch kontrolliert werden.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Springer
    European journal of pediatrics 158 (1999), S. 686-686 
    ISSN: 1432-1076
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Springer
    Pediatric nephrology 3 (1989), S. 189-190 
    ISSN: 1432-198X
    Schlagwort(e): Pregnancy ; Advanced renal failure
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract We describe a successful pregnancy in a 22-year-old patient with advanced renal failure, who gave birth to a living boy in the 35th week of pregnancy. At the time of spontaneous delivery the mother had a serum creatinine of 851 μmol/l. No dialysis treatment had been instituted during this successful pregnancy.
    Materialart: Digitale Medien
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  • 4
    Digitale Medien
    Digitale Medien
    Springer
    European journal of pediatrics 147 (1988), S. 288-291 
    ISSN: 1432-1076
    Schlagwort(e): Premature infant ; Caffeine ; Hypoxaemia ; Bradycardia
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Fifty spontaneously breathing, preterm infants 48h old, of 32 weeks' gestation or less, were assigned randomly to receive caffeine citrate (loading dose 20 mg/kg, maintenance dose 10 mg/kg per day) or a placebo (NaCl 0.9%). The study hypothesis was that caffeine reduces the proportion of infants with recurrent hypoxaemic episodes (decrease in transcutaneous PO2 of 20% within 20ss) from 50% to 25%. Transcutaneous oxygen tension (tcPO2) and heart rate were recorded continuously for 50h and analysed by computer. The two groups were similar in gestational age, birth weight, delivery mode, sex distribution, and Apgar scores. The mean serum concentration (±SD) of caffeine 2h after the second maintenance dose was 96.0 (±34.5) μmol/l in the group receiving caffeine and 9.3 (±12.8) μmol/l in the group receiving a placebo. The mean proportion of infants with more than six hypoxaemic episodes per 12h in the caffeine groups was higher (57%) than in the control group (51%). The mean proportion of infants with more than six episodes of bradycardia per 12h was not statistically different in the caffeine group (79%) from the control group (86%). Our results suggest that prophylactic caffeine has little if any effect on the risk of developing hypoxaemic episodes and bradycardia in small preterm infants and the supposed 50% reduction which was considered clinically important at the start of the trial can be rejected with confidence.
    Materialart: Digitale Medien
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  • 5
    ISSN: 1432-1076
    Schlagwort(e): Chondrodysplasia ; Dominant mutation ; Amino acid substitution ; Allelic heterogeneity
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Achondroplasia, the most common form of chondrodysplasia, has been associated with mutations in the gene of the fibroblast growth factor receptor-3 (FGFR-3) on chromosome 4p. All 39 achondroplasia alleles studied so far carried point mutations which caused the same amino acid exchange, a substitution of glycine by arginine at position 380 (G380R) in the transmembrane domain of the receptor. We report on a newborn with achondroplasia who does not carry a G380R mutation but has a mutation causing substitution of a nearby glycine with a cysteine (G375C). This observation indicates allelic heterogeneity and confirms the role of mutations in the transmembrane domain of FGFR-3 in the pathogenesis of achondroplasia.
    Materialart: Digitale Medien
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  • 6
    Digitale Medien
    Digitale Medien
    Springer
    European journal of pediatrics 149 (1990), S. 851-855 
    ISSN: 1432-1076
    Schlagwort(e): Pulse oximetry ; Oxygen saturation ; Heart rate ; Patent ductus arteriosus ; Newborn infant
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract The objective of this study was to investigate the clinical applicability of pulse oximetry to measure haemoglobin oxygen saturation and heart rate in the first 20 min of life and to analyse the effect of pre- or postductal (hand, respectively, foot) fixation of sensors on oxygen saturation. Measurements were carried out on 53 newborn infants selected at random after delivery by caesarean section. Signal detection occurred significantly faster from the hand (50% after 1.3 min, 90% after 4 min) than from the foot (50% after 3.1 min, 90% after 9 min). Both fixation sites showed equally great sensitivity to motion. The heart rates from pulse oximetry recordings were up to 30% lower than those from ECG recordings. Saturation values from the hand were nearly always higher than those from the foot (median difference in the 5th min was 10%; between the 5th and 10th min it was 7%; no significant difference occurred after the 17th min). We conclude that pulse oximetry can be used for documenting oxygenation and right-to-left shunting in newborn infants during the first minutes of life in spite of limitations due to incomplete pulse wave detection and artifacts.
    Materialart: Digitale Medien
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  • 7
    Digitale Medien
    Digitale Medien
    Springer
    European journal of pediatrics 153 (1994), S. 123-128 
    ISSN: 1432-1076
    Schlagwort(e): Aminophylline ; Cerebral blood volume ; Cytochrome c oxidase ; Near infrared spectroscopy ; Newborn infant
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract The effect of aminophylline on cerebral blood volume and oxidative metabolism in newborn infants was investigated with near infrared spectroscopy (NIRS). Thirteen mechanically ventilated premature infants who received aminophylline to facilitate weaning from the respirator were selected. Gestational age ranged between 26 and 34 weeks, postnatal age between 1 and 7 days and birth weight between 760 and 2300 g. A bolus of 6 mg aminophylline/kg body weight was infused within 2 min. NIRS was performed continuously across the head to monitor changes in cerebral blood volume and cytochrome c oxidase. Heart rate, transcutaneous carbon dioxide tension (tcpCO2) and arterial haemoglobin oxygen saturation (SO2) were recorded simultaneously. The infusion of aminophylline was associated with an increase in heart rate (median 12, interquartile range 5–20 beats per min,P=0.0004) and a drop in tcpCO2 (median −0.4, interquartile range −0.1 to −0.5 kPa,P=0.015). Oxygen saturation remained stable (±3%). A decrease in cerebral blood volume was measured with NIRS in 9/13 patients (median −0.15 ml/100g brain tissue, interquartile range +0.08 to −0.28,P=0.10). Oxidized cytochrome c oxidase decreased in 11/13 patients (median −0.27 μmol/l, interquartile range −0.19 to −0.44,P=0.01). Our findings demonstrate an immediate step-response of heart rate and tcpCO2 to aminophylline in premature infants. The simultaneous reduction of cytochrome c oxidase in the brain cannot be explained as a consequence of changes in tcpCO2 or changes in cerebral blood volume. We therefore speculate that aminophylline interferes directly with cerebral metabolism.
    Materialart: Digitale Medien
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  • 8
    Digitale Medien
    Digitale Medien
    Springer
    European journal of pediatrics 158 (1999), S. 138-143 
    ISSN: 1432-1076
    Schlagwort(e): Key words Cerebral blood flow ; Preterm infants ; Neurological outcome ; Brain development ; 133Xenon method
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Cerebral blood flow (CBF) studies have provided some insight into pathophysiological mechanisms of cerebral damage in newborn children; their value in predicting brain damage, however, remains elusive. The purpose of our study was to evaluate the role of CBF measurements in predicting developmental outcome in preterm neonates at 18 months. Preterm babies with a gestational age of less than 34 weeks and a birth weight of less than 1500 g (n = 71) were enrolled in the study. CBF was measured by the nonivasive intravenous 133Xe method on three different occasions. We classified our measurements into three groups: depending on the time when performed group 1: between 2 and 36 h (n = 52); group 2: between 36 and 108 h (n = 44); group 3: between 108 and 240 h (n = 41). At the age of 18 months neurodevelopment testing was performed according to the Bayley mental and motor scales. Surviving infants had a higher mean CBF over the three groups than non surviving children (15.2 ± 3.5 ml/100 g brain tissue/min vs 13.0 ± 2.1 ml/100 g brain tissue/min, P 〈 0.05). There was no correlation of CBF with mental or motor development in our study population in either of the three groups. Conclusion In preterm infants basal CBF is higher in surviving than in non surviving infants, but there is no correlation of resting CBF and later neurological outcome.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 9
    Digitale Medien
    Digitale Medien
    Springer
    European journal of pediatrics 153 (1994), S. 123-128 
    ISSN: 1432-1076
    Schlagwort(e): Key words: Aminophylline – Cerebral blood volume – Cytochrome c oxidase – Near infrared spectroscopy – Newborn infant
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract. The effect of aminophylline on cerebral blood volume and oxidative metabolism in newborn infants was investigated with near infrared spectroscopy (NIRS). Thirteen mechanically ventilated premature infants who received aminophylline to facilitate weaning from the respirator were selected. Gestational age ranged between 26 and 34 weeks, postnatal age between 1 and 7 days and birth weight between 760 and 2300 g. A bolus of 6 mg aminophylline/kg body weight was infused within 2 min. NIRS was performed continuously across the head to monitor changes in cerebral blood volume and cytochrome c oxidase. Heart rate, transcutaneous carbon dioxide tension (tcpCO2) and arterial haemoglobin oxygen saturation (SO2) were recorded simultaneously. The infusion of aminophylline was associated with an increase in heart rate (median 12, interquartile range 5 – 20 beats per min, P=0.0004) and a drop in tcpCO2 (median −0.4, interquartile range −0.1 to −0.5 kPa, P=0.015). Oxygen saturation remained stable (±3%). A decrease in cerebral blood volume was measured with NIRS in 9/13 patients (median −0.15 ml/100 g brain tissue, interquartile range +0.08 to −0.28, P=0.10). Oxidized cytochrome c oxidase decreased in 11/13 patients (median −0.27 µmol/l, interquartile range −0.19 to −0.44, P=0.01). Our findings demonstrate an immediate step-response of heart rate and tcpCO2 to aminophylline in premature infants. The simultaneous reduction of cytochrome c oxidase in the brain cannot be explained as a consequence of changes in tcpCO2 or changes in cerebral blood volume. We therefore speculate that aminophylline interferes directly with cerebral metabolism.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 10
    ISSN: 1432-1076
    Schlagwort(e): Key words Chondrodysplasia ; Dominant mutation ; Amino acid ; substitution ; Allelic heterogeneity
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Achondroplasia, the most common form of chondrodysplasia, has been associated with mutations in the gene of the fibroblast growth factor receptor-3 (FGFR-3) on chromosome 4p. All 39 achondroplasia alleles studied so far carried point mutations which caused the same amino acid exchange, a substitution of glycine by arginine at position 380 (G380R) in the transmembrane domain of the receptor. We report on a newborn with achondroplasia who does not carry a G380R mutation but has a mutation causing substitution of a nearby glycine with a cysteine (G375C). This observation indicates allelic heterogeneity and confirms the role of mutations in the transmembrane domain of FGFR-3 in the pathogenesis of achondroplasia.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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