Hjem
Kristian Sommerfelts bilde

Kristian Sommerfelt

Professor
  • E-postKristian.Sommerfelt@uib.no
  • Telefon+47 55 97 51 69
  • Besøksadresse
    Haukeland universitetssykehus, Laboratoriebygget
  • Postadresse
    Postboks 7804
    5020 Bergen
Tidsskriftartikler
  • Fevang, Silje Katrine Elgen; Hysing, Mari; Sommerfelt, Kristian; Markestad, Trond; Elgen, Irene Bircow. 2019. Development and predictors of childhood mental health problems in former extremely preterm infants. Early Human Development. 135: 44-49. doi: 10.1016/j.earlhumdev.2019.06.008
  • Fevang, Silje Katrine Elgen; Hysing, Mari; Sommerfelt, Kristian; Elgen, Irene Bircow. 2017. Mental health assessed by the Strengths and Difficulties Questionnaire for children born extremely preterm without severe disabilities at 11 years of age: a Norwegian, national population-based study. European Child and Adolescent Psychiatry. 1-9. doi: 10.1007/s00787-017-1007-x
  • Tronstad, Karl Johan; Fluge, Øystein; Lien, Katarina; Sommerfelt, Kristian; Mella, Olav. 2017. Mer om pyruvat dehydrogenase og kronisk utmattelsessyndrom. Tidsskrift for Den norske legeforening. Publisert 2017-12-11.
  • Fevang, Silje Katrine Elgen; Hysing, Mari; Markestad, Trond; Sommerfelt, Kristian. 2016. Mental Health in Children Born Extremely Preterm Without Severe Neurodevelopmental Disabilities. Pediatrics. 137. doi: 10.1542/peds.2015-3002
  • Fluge, Øystein; Mella, Olav; Bruland, Ove; Risa, Kristin; Dyrstad, Sissel Elisabeth; Alme, Kine; Rekeland, Ingrid Gurvin; Sapkota, Dipak; Røsland, Gro Vatne; Fosså, Alexander; Ktoridou-Valen, Irini; Lunde, Sigrid; Sørland, Kari; Lien, Katarina; Herder, Ingrid; Thurmer, Hanne; Gotaas, Merete E; Baranowska, Katarzyna Anna; Bohnen, Louis M.L.J.; Schäfer, Christoph; Mccann, Adrian; Sommerfelt, Kristian; Helgeland, Lars; Ueland, Per Magne; Dahl, Olav; Tronstad, Karl Johan. 2016. Metabolic profiling indicates impaired pyruvate dehydrogenase function in myalgic encephalopathy/chronic fatigue syndrome. JCI Insight. 1. doi: 10.1172/jci.insight.89376
  • Eger, Siw Helen; Kessler, Jørg; Kiserud, Torvid; Markestad, Trond; Sommerfelt, Kristian. 2015. Foetal Doppler abnormality is associated with increased risk of sepsis and necrotising enterocolitis in preterm infants. Acta Paediatrica. 104: 368-376. doi: 10.1111/apa.12893
  • Fevang, Silje Katrine Elgen; Sommerfelt, Kristian; Leversen, Katrine Tyborg; Markestad, Trond. 2015. Minor neurodevelopmental impairments are associated with increased occurrence of ADHD symptoms in children born extremely preterm. European Child and Adolescent Psychiatry. 24: 463-470. doi: 10.1007/s00787-014-0597-9
  • Eger, Siw Helen; Sommerfelt, Kristian; Kiserud, Torvid; Markestad, Trond. 2013. Foetal umbilical artery Doppler in small preterms: (IQ) Neurocognitive outcome at 5 years of age. Acta Paediatrica. 102: 403-409. doi: 10.1111/apa.12164
  • Leversen, Katrine Tyborg; Sommerfelt, Kristian; Elgen, Irene Bircow; Eide, Geir Egil; Irgens, Lorentz M.; Juliusson, Petur Benedikt; Markestad, Trond. 2012. Prediction of outcome at 5 years from assessments at 2 years among extremely preterm children: A Norwegian national cohort study. Acta Paediatrica. 101: 264-270. doi: 10.1111/j.1651-2227.2011.02504.x
  • Leversen, Katrine Tyborg; Sommerfelt, Kristian; Rønnestad, Arild Erlend; Kaaresen, Per Ivar; Farstad, Teresa; Skranes, Janne Helen; Støen, Ragnhild; Elgen, Irene Bircow; Rettedal, Siren; Eide, Geir Egil; Irgens, Lorentz M.; Markestad, Trond. 2011. Prediction of Neurodevelopmental and Sensory Outcome at 5 Years in Norwegian Children Born Extremely Preterm. Pediatrics. 127: E630-E638. doi: 10.1542/peds.2010-1001
  • Leversen, Katrine Tyborg; Sommerfelt, Kristian; Rønnestad, Arild Erlend; Kaaresen, Per Ivar; Farstad, Teresa; Skranes, Janne Helen; Støen, Ragnhild; Elgen, Irene Bircow; Rettedal, Siren; Eide, Geir Egil; Irgens, Lorentz M.; Markestad, Trond. 2010. Predicting neurosensory disabilities at two years of age in a national cohort of extremely premature infants. Early Human Development. 86: 581-586. doi: 10.1016/j.earlhumdev.2010.07.009
  • Odberg, Morten Duus; Sommerfelt, Kristian; Markestad, Trond; Elgen, Irene Bircow. 2010. Growth and somatic health until adulthood of low birthweight children. Archives of Disease in Childhood: Fetal and Neonatal Edition. 95: F201-F205. doi: 10.1136/adc.2009.160614
  • Leversen, KT; Sommerfelt, K; Irgens, Lorentz M; Markestad, T. 2009. Relationship between cognitive and motor function at 5 years of age in a national cohort of extremely preterm infants. Acta Paediatrica. 98: S178-S179. doi: 10.1111/j.1651-2227.2009.01482_2.x
  • Leversen, KT; Sommerfelt, K; Irgens, Lorentz M; Markestad, T. 2009. Cognitive outcome at 5 years of age in a national cohort of extremely pre-term infants. Acta Paediatrica. 98: S178. doi: 10.1111/j.1651-2227.2009.01482_2.x
  • Odberg, Morten Duus; Sommerfelt, Kristian; Markestad, Trond; Elgen, Irene Bircow. 2009. GROWTH AND SOMATIC HEALTH UNTIL ADULTHOOD OF LOW BIRTH WEIGHT CHILDREN. Acta Paediatrica. 98: 201-201.
  • Wold, Siw-Helen Westby; Sommerfelt, Kristian; Reigstad, Hallvard; Rønnestad, Arild; Medbø, Sverre; Farstad, Teresa; Kaaresen, Per Ivar; Støen, Ragnhild; Leversen, Katrine Tyborg; Irgens, Lorentz M.; Markestad, Trond. 2009. Neonatal mortality and morbidity in extremely preterm small for gestational age infants: a population based study. Archives of Disease in Childhood: Fetal and Neonatal Edition. 94: F363-F367. doi: 10.1136/adc.2009.157800
  • Høie, B; Sommerfelt, K; Waaler, PE; Alsaker, FD; Skeidsvoll, H; Mykletun, Arnstein. 2008. The combined burden of cognitive, executive function, and psychosocial problems in children with epilepsy: a population-based study. Developmental Medicine & Child Neurology. 50: 530-536. doi: 10.1111/j.1469-8749.2008.03015.x
  • Høie, Bjørg; Mykletun, Arnstein; Waaler, Per Erik; Skeidsvoll, Håvard; Sommerfelt, Kristian. 2006. Executive functions and seizure-related factors in children with epilepsy in western Norway. Developmental Medicine & Child Neurology. 48: 519-525. doi: 10.1017/S0012162206001095
  • Høie, Bjørg; Sommerfelt, Kristian; Waaler, Per-Erik; Alsaker, Francoise Delange; Skeidsvoll, Håvard; Mykletun, Arnstein. 2006. Psychosocial problems and seizure-related factors in children with epilepsy. Developmental Medicine & Child Neurology. 48: 213-219. doi: 10.1017/S0012162206000454
  • Kashala, Esperance; Lundervold, Astri Johansen; Sommerfelt, Kristian; Tylleskär, Thorkild; Elgen, Irene Bircow. 2006. Co-existing symptoms and risk factors among African school children with hyperactivity-inattention symptoms in Kinshasa, Congo. European Child and Adolescent Psychiatry. 15: 292-299. doi: 10.1007/s00787-006-0536-5
  • Versland, Lene Brose; Sommerfelt, Kristian; Elgen, Irene Bircow. 2006. Maternal signs of chorioamnionitis: Persistent cognitive impairment in low-birthweight children. Acta Paediatrica. 95: 231-235. doi: 10.1080/08035250500352151
  • Elgen, Irene Bircow; Johansson, Kjell Arne; Markestad, Trond; Sommerfelt, Kristian. 2005. A non-handicapped cohort of low-birthweight children: growth and general health status at 11 years of age. Acta Paediatrica. 94: 1203-1207.
  • Enger, Per Ø.; Svendsen, Frode; Sommerfelt, Kristian; Wester, Knut. 2005. Shunt revisions in children - can they be avoided? Experiences from a population-based study. Pediatric Neurosurgery. 41: 300-304.
  • Høie, Bjørg; Mykletun, Arnstein; Sommerfelt, Kristian; Bjørnæs, H; Skeidsvoll, H; Waaler, PE. 2005. Seizure-related factors and non-verbal intelligence in children with epilepsy - A population-based study from Western Norway. Seizure. 14: 223-231.
  • Kashala, Esperance; Elgen, Irene Bircow; Sommerfelt, Kristian; Tylleskär, Thorkild. 2005. Teacher ratings of mental health among school children in Kinshasa, Democratic Republic of Congo. European Child and Adolescent Psychiatry. 14: 208-215. doi: 10.1007/s00787-005-0446-y
  • Kashala, Esperance; Tylleskär, Thorkild; Elgen, Irene Bircow; Kayembe, KT; Sommerfelt, Kristian. 2005. Attention deficit and hyperactivity disorder among school children in Kinshasa, Democratic Republic of Congo. African Health Sciences. 5: 172-181.
  • Kashala, Espérance; Elgen, Irene Bircow; Sommerfelt, Kristian; Tylleskär, Thorkild; Lundervold, Astri Johansen. 2005. Cognition in African children with attention-deficit hyperactivity disorder. Pediatric Neurology. 33: 357-364.
  • Elgen, Irene Bircow; Lundervold, Astri Johansen; Sommerfelt, Kristian. 2004. Aspects of inattention in low birth weight children. Pediatric Neurology. 30: 92-98.
  • Kashala, E; Elgen, Irene Bircow; Sommerfelt, Kristian; Tylleskär, Thorkild. 2004. Neuropsychiatric symptoms among African school children in Kinshasa. European psychiatry. 19: 235S-235S.
  • Waaler, Per Erik; Sommerfelt, Kristian. 2004. Barnenevrologi og habilitering i Norge. Tidsskrift for Den norske legeforening. Årg. 124, nr 19. 2486-2487.
  • Elgen, Irene Bircow; Ellertsen, Bjørn; Sommerfelt, Kristian. 2003. Cognitive performance in a low birthweight cohort at 5 and 11 years of age. Pediatric Neurology. 29: 111-116.
  • Aase, Lene Jeanette Grasmo; Sommerfelt, Kristian; Berstad, Tove. 2002. Appendikostomi for fekalinkontinens hos barn og unge med myelomeningocele. Tidsskrift for Den norske legeforening. 122: 2696-2699.
  • Elgen, Irene Bircow; Sommerfelt, Kristian. 2002. Low birthweight children: coping in school? Acta Paediatrica. 91: 939-945.
  • Elgen, Irene Bircow; Sommerfelt, Kristian; Markestad, Trond. 2002. Population based, controlled study of behavioural problems and psychiatric disorders in low birthweight children at 11 years of age. Archives of Disease in Childhood: Fetal and Neonatal Edition. 87: F128-F132.
  • Sommerfelt, Kristian; Sonnander, K; Skranes, Jon; Andersson, Helle Wessel; Ahlsten, Gunnar; Ellertsen, B; Markestad, Trond; Jacobsen, Geir Wenberg; Hoffman, H.J.; Bakketeig, L. 2002. Neuropsychologic and motor function in small-for-gestational preschoolers. Pediatric Neurology. 26: 186.
  • Sommerfelt, Kristian; Sonnander, Karin; Skranes, Jon; Andersson, Helle W; Ahlsten, Gunnar; Bjørn, Ellertsen; Markestad, Trond; Jacobsen, Geir; Hoffman, Howard; Bakketeig, Leif. 2002. Neuropsychological and motor function in small for gestational age preschoolers. Pediatric Neurology. 26: 186-191.
  • Andersson, HW; Sommerfelt, Kristian. 2001. The relationship between cognitive abilities and maternal ratings of externalizing behaviors in preschool children. Scandinavian Journal of Psychology. 42: 437-444.
  • Sommerfelt, Kristian. 2001. Cerebral parese-forekomst og tolkning. Tidsskrift for Den norske legeforening. 121: 25.
  • Sommerfelt, Kristian; Andersson, H.W.; Sonnander, K.; Ahlsten, G.; Ellertsen, Bjørn; Markestad, Trond; Jacobsen, G.; Bakketeig, L.S. 2001. Behavior in term, small for gestational age preschoolers. Early Human Development. 65: 107-121.
  • Sommerfelt, Kristian; Andersson, H; Sonander, K; Ahlsten, G; Ellertsen, G; Markestad, Trond; Jacobsen, G; Hoffman, H; Bakketeig, L. 2001. Increased risk of behavioral problems in term, small for gestational age preschoolers? Early Human Development. 65: 107-121.
  • Sommerfelt, Kristian; Andersson, Helle Wessel; Sonnander, Karin; Sonnander, Karin; Ahlsten, Gunnar; Ahlsten, Gunnar; Ellertsen, Bjørn; Markestad, Trond; Markestad, Trond; Jacobsen, Geir; Bakketeig, Leiv S; Bakketeig, Leiv S. 2001. Behavior in term, small for gestational age preschoolers. Early Human Development. 65: 107-121.
  • Sommerfelt, Kristian; Markestad, Trond; Berg, Karin; Sætesdal, Ida. 2001. Therapeutic electrical stimulation in cerebral palsy: a randomized, controlled, crossover trial. Developmental Medicine & Child Neurology. 43: 609-13.
  • Sommerfelt, Kristian; Sætesdal, I; Markestad, Trond; Berg, K. 2001. Therapeutic electrical stimulation in cerebral palsy: A randomized controlled, cross-over trial. Developmental Medicine & Child Neurology. 43: 609-613.
  • Pedersen, Svein Junker; Sommerfelt, Kristian; Markestad, Trond. 2000. Early motor development of premature infants with birthweight less than 2000 grams. Acta Paediatrica. 89: 1456-1461.
  • Sommerfelt, Kristian; Andersson, H.W.; Sonnander, K.; Ahlsten, G.; Ellertsen, Bjørn; Markestad, Trond; Jacobsen, G.; Hoffmann, H.J.; Bakketeig, L. 2000. Cognitive development of term small for gestational age children at five years of age. Archives of Disease in Childhood. 83: 25-30.
  • Sommerfelt, Kristian; Andersson, Helle Wessel. 2000. Cognitive development of term small for gestational age children at five years of age. Archives of Disease in Childhood. 83: 25-30.
  • Olafsen, kÅre sten; Sommerfelt, Kristian. 1999. The Yale Children's Inventory - A screening tool for attention deficits and related disorders. Normative data for boys. Scandinavian Journal of Psychology. 40: 121-125.
  • Andersson, Helle Wessel; Sommerfelt, Kristian. 1998. Gender and its contribution to the prediction of cognitive abilities at 5 years. Scandinavian Journal of Psychology. 39: 267-274.
  • Sommerfelt, Kristian. 1998. Annotation: Long term outcome for non-handicapped low birthweight infants - is the fog clearing? European Journal of Pediatrics. 157: 1-3.
  • Sommerfelt, Kristian; Markestad, Trond; Ellertsen, Bjørn. 1998. Neuropsychological performance in low birth weight preschoolers: a population-based, controlled study. European Journal of Pediatrics. 157: 53-58.
  • Sommerfelt, Kristian; Markestad, Trond; Ellertsen, Bjørn. 1998. Neuropsychological performance in low birth weight preschoolers: a population-based, controlled study. European Journal of Pediatrics. 157: 53-58.
  • Sommerfelt, Kristian; Ellertsen, Bjørn; Kløve, Hallgrim; Markestad, Trond. 1997. Neuropsychological deficits in 8 year old, non-handicapped children with birth weight under 1500 g. Journal of Clinical and Experimental Neuropsychology. @<In press@>.
  • Andersson, Helle Wessel; Sommerfelt, Kristian; Sonnander, Karin. 1996. Maternal child rearing attitudes, IQ and socioeconomic status as related to cognitive abilities of five-year-old children. Psychological Reports. 79: 3-14.
  • Sommerfelt, Kristian; Ellertsen, B; Markestad, Trond. 1995. Cognitive outcome in non-handicapped low birthweight preschoolersthe role of parental factors. Archives of Disease in Childhood. 73: 135-142.
  • Sommerfelt, Kristian; Ellertsen, B; Markestad, Trond. 1995. Parental factors in cognitive outcome of non-handicapped low birthweight infants. Archives of Disease in Childhood. 73: F135-142.
  • Ellertsen, B.; Sommerfelt, Kristian; Flornes, T.; Troland, K.; Markestad, Trond. 1991. Neuropsychological and Neuropediatric evalualtion of 8-year old children with birth weight lower than 1500 grams. Journal of Clinical and Experimental Neuropsychology. 13: 438-438.
  • Haugen, Olav; Seland, JH; Sommerfelt, Kristian; Waaler, PE. 1991. Diagnostikk av Spielmeyer-Vogts sykdom. Elektronmikroskopi av konjunktivalbiopsi. Tidsskrift for Den norske legeforening. 111: 2265-2266.
Rapporter/avhandlinger
  • Sommerfelt, Kristian. 1997. Preschool neurodevelopment in non-handicapped children with birthweight less than 2000 g. Dr.med.. Department of Pediatrics and Department of Biological and Med ical Psychology, University of Bergen. 1 sider.
Bokkapitler
  • Stovner, Lars Jacob; Sommerfelt, Kristian; Russell, Michael Bjørn. 2014. Hodepine. Kapittel 26, sider 389-401. I:
    • Gjerstad, Leif; Helseth, Eirik; Rootwelt, Terje. 2014. Nevrologi og nevrokirurgi fra barn til voksen, 6.utgave. Forlaget Vett & Viten AS. 719 sider. ISBN: 978-82-412-0709-9.
  • Stovner, Lars Jacob; Sommerfelt, Kristian. 2010. Hodepine. 28, sider 399-411. I:
    • Gjerstad, Leif; Helseth, Eirik; Rootwelt, Terje. 2010. Nevrologi og nevrokirurgi. Fra barn til voksen. 5.utgave. 702 sider. ISBN: 978-82-412-0686-3.
  • Markestad, Trond; Sommerfelt, Kristian. 2009. Psykomotorisk utvikling. Kap 3, sider 27-37. I:
    • Markestad, Trond. 2009. Klinisk Pediatri. Fagbokforlaget. 416 sider. ISBN: 978-82-450-0745-9.
  • Markestad, Trond; Sommerfelt, Kristian. 2009. Nervesystemet og musklene. Kap 17, sider 263-289. I:
    • Markestad, Trond. 2009. Klinisk Pediatri. Fagbokforlaget. 416 sider. ISBN: 978-82-450-0745-9.
  • Sommerfelt, Kristian. 2002. Vekst og utvikling. 128-136. I:
    • Misvær, Nina; Oftedal, Gunnar. 2002. Håndbok for helsestasjoner 0-5 år. 367 sider. ISBN: 82-446-0885-4.
  • Sommerfelt, Kristian. 2002. Utvikling. 128-136. I:
    • Misvær, Nina; Oftedal, Gunnar. 2002. Håndbok for helsestasjoner 0-5 år. 367 sider. ISBN: 82-446-0885-4.
  • Sommerfelt, Kristian; Markestad, Trond; Ellertsen, Bjørn. 1994. Nevromotorisk og adferdsmessig utvikling hos 8 år gamle barn med fødselsvekt under 1500g. Kapittel, sider 69-80. I:
    • Beckmann, Sissel Lyberg; Storvik, Hilde. 1994. Epidemiologisk forskning om sammenhengen mellom miljø og helse : Rapport for perioden 1987-1992. 356 sider. ISBN: 82-12-00269-1.

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