Home
Knut Asbjørn Alexander Øymar's picture

Knut Asbjørn Alexander Øymar

Professor
  • E-mailKnut.Oymar@uib.no
  • Phone+47 51 51 83 58
  • Visitor Address
    Haukeland universitetssykehus, Laboratoriebygget
    5009 Bergen
  • Postal Address
    Postboks 7804
    5020 Bergen
Academic article
  • Show author(s) (2022). Tracking of lung function from 10 to 35 years after being born extremely preterm or with extremely low birth weight. Thorax. 1-9.
  • Show author(s) (2022). Left vocal cord paralysis, lung function and exercise capacity in young adults born extremely preterm with a history of neonatal patent ductus arteriosus surgery—A national cohort study. Frontiers in pediatrics. 13 pages.
  • Show author(s) (2022). Asthma, atopy and lung function in young adults after hospitalisation for bronchiolitis in infancy: Impact of virus and sex. BMJ Open Respiratory Research.
  • Show author(s) (2021). Tidal volumes and pressures delivered by the NeoPuff T-piece resuscitator during resuscitation of term newborns. Resuscitation. 222-229.
  • Show author(s) (2021). Early-Onset Sepsis in Neonates - A Population-Based Study in South-West Norway From 1996 to 2018. Frontiers in pediatrics. 8 pages.
  • Show author(s) (2021). Early life growth and associations with lung function and bronchial hyperresponsiveness at 11-years of age. Respiratory Medicine. 1-8.
  • Show author(s) (2020). Reduced antibiotic exposure by serial physical examinations in term neonates at risk of early-onset sepsis. The Pediatric Infectious Disease Journal. 438-443.
  • Show author(s) (2020). Half of children with recurrent or chronic wet cough before three years of age were symptom-free by age seven. Acta Paediatrica. 2664-2670.
  • Show author(s) (2020). Compliance with Guidelines and Efficacy of Heart Rate Monitoring during Newborn Resuscitation: A Prospective Video Study. Neonatology. 175-181.
  • Show author(s) (2020). Changes in heart rate from 5 s to 5 min after birth in vaginally delivered term newborns with delayed cord clamping. Archives of Disease in Childhood: Fetal and Neonatal Edition. F1-F5.
  • Show author(s) (2020). Cerebrospinal fluid cytokines and chemokines in children with Lyme neuroborreliosis; pattern and diagnostic utility. Cytokine. 1-9.
  • Show author(s) (2020). Adipokines in adolescence; the associations with lung function and atopy – A cross-sectional study. Respiratory Medicine.
  • Show author(s) (2019). The B-lymphocyte chemokine CXCL13 in the cerebrospinal fluid of children with Lyme neuroborreliosis: associations with clinical and laboratory variables. Infectious Diseases. 856-863.
  • Show author(s) (2019). Parental involvement in decision-making about their child's health care at the hospital. Nursing Open. 50-58.
  • Show author(s) (2019). Lung function and bronchial hyper-reactivity from 11 to 18 years in children with bronchiolitis in infancy . Pediatric Allergy and Immunology. 57-65.
  • Show author(s) (2019). Incidence of newborn resuscitative interventions at birth and short-term outcomes: A regional population-based study. BMJ Paediatrics Open. 8 pages.
  • Show author(s) (2019). Health professionals’ involvement of parents in decision-making in interprofessional practice at the hospital. Journal of Interprofessional Care. 1-11.
  • Show author(s) (2019). Comparison of physical activity and body composition in a cohort of children born extremely preterm or with extremely low birth weight to matched term-born controls: a follow-up study. BMJ Paediatrics Open. 1-11.
  • Show author(s) (2019). Airway symptoms and atopy in young children prescribed asthma medications: A large‐scale cohort study. Pediatric Pulmonology. 1557-1566.
  • Show author(s) (2018). Vortex whistle and smart phone application for peak flow recordings in asthmatic children: A feasibility study. Telemedicine journal and e-health. 1077-1082.
  • Show author(s) (2018). The role of tonsillectomy in the Periodic Fever, Aphthous stomatitis, Pharyngitis and cervical Adenitis syndrome; A literature review. BMC Ear, Nose and Throat Disorders. 1-7.
  • Show author(s) (2018). The associations between weight-related anthropometrics during childhood and lung function in late childhood: A retrospective cohort study. BMC Pulmonary Medicine. 1-13.
  • Show author(s) (2018). Respiratory morbidity through the first decade of life in a national cohort of children born extremely preterm. BMC Pediatrics. 1-13.
  • Show author(s) (2018). Renal function and blood pressure in 11 year old children born extremely preterm or small for gestational age. PLOS ONE. 1-11.
  • Show author(s) (2018). Prescribing of asthma drugs for children 2004-2015. Tidsskrift for Den norske legeforening. 345-351.
  • Show author(s) (2018). Predictors of 24-h outcome in newborns in need of positive pressure ventilation at birth. Resuscitation. 1-5.
  • Show author(s) (2018). Direct molecular detection and genotyping of borrelia burgdorferi sensu lato in cerebrospinal fluid of children with lyme neuroborreliosis. Journal of Clinical Microbiology. 1-11.
  • Show author(s) (2017). The relation between given volume and heart rate during newborn resuscitation. Resuscitation. 80-86.
  • Show author(s) (2017). Protrahert bakteriell bronkitt hos barn. Tidsskrift for Den norske legeforening. 1-6.
  • Show author(s) (2017). Lung function at term in extremely preterm-born infants: A regional prospective cohort study. BMJ Open. 1-10.
  • Show author(s) (2017). Juvenile myasthenia gravis in Norway: A nationwide epidemiological study. European journal of paediatric neurology. 312-317.
  • Show author(s) (2017). How health professionals facilitate parents' involvement in decision-making at the hospital: A parental perspective. Journal of Child Health Care. 108-121.
  • Show author(s) (2017). Feasibility of a prototype newborn resuscitation monitor to study transition at birth, measuring heart rate and ventilator parameters, an animal experimental study. BMC Research Notes. 1-7.
  • Show author(s) (2017). Exposure to preeclampsia in utero affects growth from birth to late childhood dependent on child's sex and severity of exposure: Follow-up of a nested case-control study. PLOS ONE. 1-15.
  • Show author(s) (2017). Cerebrospinal Fluid B-lymphocyte Chemoattractant CXCL13 in the Diagnosis of Acute Lyme Neuroborreliosis in Children. The Pediatric Infectious Disease Journal. e286-e292.
  • Show author(s) (2016). Normal newborn heart rate in the first five minutes of life assessed by dry-electrode electrocardiography. Neonatology. 231-237.
  • Show author(s) (2016). Increased bronchial hyperresponsiveness and higher asymmetric dimethylarginine levels after fetal growth restriction. American Journal of Respiratory Cell and Molecular Biology. 83-89.
  • Show author(s) (2016). Body mass index and physical activity in early childhood are associated with atopic sensitization, atopic dermatitis and asthma in later childhoo. Clinical and Translational Allergy. 1-9.
  • Show author(s) (2015). Reduced number of CD8+ cells in tonsillar germinal centres in children with the periodic fever, aphthous stomatitis, pharyngitis and cervical adenitis syndrome. Scandinavian Journal of Immunology. 76-83.
  • Show author(s) (2015). Prescription patterns of inhaled corticosteroids for preschool children - A Norwegian register study. Pediatric Allergy and Immunology. 655-661.
  • Show author(s) (2015). Long-term use of a 4% sodium cromoglicate cutaneous emulsion in the treatment of moderate to severe atopic dermatitis in children. Journal of dermatological treatment (Print). 541-547.
  • Show author(s) (2015). Gender differences in childhood lyme neuroborreliosis. Behavioural Neurology. 6 pages.
  • Show author(s) (2015). Extended-spectrum β-lactamase-producing Enterobacteriaceae among pregnant women in Norway: Prevalence and maternal-neonatal transmission. Journal of Perinatology. 907-912.
  • Show author(s) (2015). Decline in admissions for childhood asthma, a 26-year period population-based study. Pediatric Allergy and Immunology. 750-755.
  • Show author(s) (2015). Children born preterm at the turn of the millennium had better lung function than children born similarly preterm in the early 1990s. PLOS ONE. 17 pages.
  • Show author(s) (2014). TTC7A mutations disrupt intestinal epithelial apicobasal polarity. Journal of Clinical Investigation. 328-337.
  • Show author(s) (2014). Continuous positive airway pressure for bronchiolitis in a general paediatric ward; a feasibility study. BMC Pediatrics.
  • Show author(s) (2014). Blood eosinophil counts during bronchiolitis are related to bronchial hyper-responsiveness and lung function in early adolescence. Acta Paediatrica. 86-92.
  • Show author(s) (2014). Birth after preeclamptic pregnancies: Association with allergic sensitization and allergic rhinoconjunctivitis in late childhood; a historically matched cohort study. BMC Pediatrics.
  • Show author(s) (2013). Severe bronchiolitis in infancy: Can asthma in adolescence be predicted? Pediatric Pulmonology. 538-544.
  • Show author(s) (2013). Risk factors for acquisition of CTX-M-15 extended-spectrum beta-lactamase-producing Klebsiella pneumoniae during an outbreak in a neonatal intensive care unit in Norway. Scandinavian Journal of Infectious Diseases. 54-58.
  • Show author(s) (2013). Long-term faecal carriage in infants and intra-household transmission of CTX-M-15-producing Klebsiella pneumoniae following a nosocomial outbreak. Journal of Antimicrobial Chemotherapy. 1043-1048.
  • Show author(s) (2013). Incidence, clinical characteristics and outcome in Norwegian children with periodic fever, aphthous stomatitis, pharyngitis and cervical adenitis syndrome; a population-based study. Acta Paediatrica. 187-192.
  • Show author(s) (2013). Exhaled nitric oxide is related to atopy, but not asthma in adolescents with bronchiolitis in infancy. BMC Pulmonary Medicine.
  • Show author(s) (2013). Elevated levels of CXCL10 in the Periodic Fever, Aphthous stomatitis, Pharyngitis and cervical Adenitis syndrome (PFAPA) during and between febrile episodes; an indication of a persistent activation of the innate immune system. Pediatric Rheumatology. 10 pages.
  • Show author(s) (2012). The outcome after severe bronchiolitis is related to gender and virus. Pediatric Allergy and Immunology. 391-398.
  • Show author(s) (2012). Lyme meningitis, the major cause of childhood meningitis in an endemic area: a population based study. Archives of Disease in Childhood. 215-220.
  • Show author(s) (2012). First outbreak of extended-spectrum beta-lactamase-producing Klebsiella pneumoniae in a Norwegian neonatal intensive care unit; associated with contaminated breast milk and resolved by strict cohorting. APMIS - Journal of Pathologiy, Microbiology and Immunology. 612-621.
  • Show author(s) (2009). Pharmacological differences between once daily and twice daily gentamicin dosage in newborns with suspected sepsis. Pharmacy World & Science (PWS). 18-23.
  • Show author(s) (2009). Oxygen saturation in healthy newborns; influence of birth weight and mode of delivery. Journal of Perinatal Medicine. 403-406.
  • Show author(s) (2009). Oxygen saturation in healthy newborns; influence of birth weight and mode of delivery. Journal of Perinatal Medicine. 403-406.
  • Show author(s) (2009). Laboratory data in children with Lyme neuroborreliosis, relation to clinical presentation and duration of symptoms. Scandinavian Journal of Infectious Diseases. 355-362.
  • Show author(s) (2009). Clinical characteristics of childhood Lyme neuroborreliosis in an endemic area of northern Europe. Scandinavian Journal of Infectious Diseases. 88-94.
  • Show author(s) (2008). Økt forekomst av nevroborreliose hos barn. Tidsskrift for Den norske legeforening. 2060-2061.
  • Show author(s) (2008). Fatty acids in cord blood plasma, the relation to soluble CD23 and subsequent atopy. Prostaglandins, Leukotrienes and Essential Fatty Acids. 61-65.
  • Show author(s) (2007). Periodisk feber-syndrom hos barn. Tidsskrift for Den norske legeforening. 1651-1653.
  • Show author(s) (2007). C-reactive protein in the periodic fever, aphthous stomatitis, pharyngitis and cervical adenitis (PFAPA) syndrome. Acta Paediatrica. 1670-1673.
  • Show author(s) (2007). Allergivaksinasjon i Norge. Tidsskrift for Den norske legeforening. 1036-1038.
  • Show author(s) (2007). Acute facial nerve palsy in children: How often is it Lyme borreliosis? Scandinavian Journal of Infectious Diseases. 425-431.
  • Show author(s) (2006). Mast cell activation and leukotriene secretion in wheezing infants. Relation to respiratory syncytial virus and outcome. Pediatric Allergy and Immunology. 37-42.
  • Show author(s) (2006). Hospital admissions for wheezing and asthma in childhood - are they avoidable? Journal of Asthma. 801-806.
  • Show author(s) (2005). Increased levels of urinary leukotriene E4 in children with severe eczema/dermatitis syndrome. Allergy. European Journal of Allergy and Clinical Immunology. 86-90.
  • Show author(s) (2005). Increased levels of urinary leukotriene E4 in children with severe atopic eczema/dermatitis syndrome. Allergy. European Journal of Allergy and Clinical Immunology.
  • Show author(s) (2005). Immunoglobulin heavy G2 chain (IGHG2) gene restriction in the development of severe respiratory syncytial virus infection. Acta Paediatrica. 414-418.
  • Show author(s) (2005). Characteristics of asthma and airway hyper-responsiveness after premature birth. Pediatric Allergy and Immunology. 487-494.
  • Show author(s) (2004). Urinary 9 alpha,11 beta-prostaglandin F-2 in children with atopic eczema/dermatitis syndrome: An indicator of mast cell activation? Acta Dermato-Venereologica. 359-362.
  • Show author(s) (2003). Innleggelser for akutt astme hos barn. Tidsskrift for Den norske legeforening. 3517-3519.
  • Show author(s) (2003). Hospital admissions for childhood asthma in Rogaland, Norway from 1984 to 2000. Acta Paediatrica. 910-916.
  • Show author(s) (2003). Forebygging av respiratorisk syncytalvirus-infeksjoner med pailvizumlab. Tidsskrift for Den norske legeforening. 941-943.
  • Show author(s) (2001). Urinary eosinophil protein X in children with asthma: influence of atopy and airway infections. Pediatric Allergy and Immunology. 34-41.
  • Show author(s) (2001). Eosinophil counts and urinary eosinophil protein X in children hospitalized for wheezing during the first year of life: prediction of recurrent wheezing. Acta Paediatrica. 843-849.
  • Show author(s) (2001). Eosinophil counts and urinary eosinophil protein X in children hospitalize for wheezing during the first year of life: prediction of recurrent wheezing. Acta Paediatrica. 843-849.
  • Show author(s) (2000). Urinary eosinophil protein X in children with atopic dermatitis: relation to atopy and disease activity. Allergy. European Journal of Allergy and Clinical Immunology. 964-968.
  • Show author(s) (2000). Soluble CD30 and CD23 in cord blood are not related to atopy in early childhood. Pediatric Allergy and Immunology. 220-224.
  • Show author(s) (1998). Is serum eosinophil cationic protein in bronchiolitis a predictor of asthma? Pediatric Allergy and Immunology. 204-207.
  • Show author(s) (1998). Differential patterns of circulating adhesion molecules in children with bronchial asthma, and acute bronchiolitis. Pediatric Allergy and Immunology. 73-79.
  • Show author(s) (1997). Serum eosinophil cationic protein and interleukin-5 in childeren with bronchial asthma and acute bronchiolitis. Pediatric Allergy and Immunology. 170-176.
  • Show author(s) (1993). Residiverende abdominalsmerter. En prospektiv undersøkelse. Tidsskrift for Den norske legeforening. 2566-2568.
Academic lecture
  • Show author(s) (2005). Periodisk febersyndrom hos barn.
  • Show author(s) (2005). Palivizumab ved lungesykdommer, contra.
  • Show author(s) (2005). Allergivaksinering, status i Norge.
Reader opinion piece
  • Show author(s) (2021). Har anbefalinger om endring av behandling effekt? Tidsskrift for Den norske legeforening. 1-3.
  • Show author(s) (2018). K. Øymar og medarbeidere svarer. Tidsskrift for Den norske legeforening. 15-15.
  • Show author(s) (2017). Systemiske steroider til førskolebarn med symptomer fra nedre luftveier. Tidsskrift for Den norske legeforening. 698-699.
  • Show author(s) (2013). Tolking av serologiske testar. Tidsskrift for Den norske legeforening.
  • Show author(s) (2013). The optimal management for patients (Letter). Pediatric Pulmonology. 936-936.
Short communication
  • Show author(s) (2011). Ei ung jente med magesmerter. Tidsskrift for Den norske legeforening. 1199-1201.
  • Show author(s) (2007). Regelmessige episoder med høy feber hos en liten gutt. Tidsskrift for Den norske legeforening. 1662-1663.
Feature article
  • Show author(s) (2012). Bruk av inhalasjonssteroider hos førskolebarn. Tidsskrift for Den norske legeforening. 160-162.
Letter to the editor
  • Show author(s) (2022). Ten-year trends of national healthcare costs of asthma, allergic rhinitis, and atopic eczema in 3 million Norwegians. Allergy. European Journal of Allergy and Clinical Immunology.
  • Show author(s) (2020). Reply to Korppi and Riikonen. Pediatric Allergy and Immunology. 720-721.
Doctoral dissertation
  • Show author(s) (2018). Tidal breathing parameters in extremely premature infants. Feasibility and clinical utility of electromagnetic inductance plethysmography.
  • Show author(s) (2017). An epidemiological study on the associations between preeclampsia exposure, growth and physical activity in preschool age and subsequent allergy, asthma and lung function in late childhood.
  • Show author(s) (2016). Extended-spectrum beta-lactamase producing Enterobacteriaceae in neonates; Hospital outbreak, colonization, transmission and persistence.
  • Show author(s) (2015). The Periodic Fever, Aphthous stomatitis, Pharyngitis and cervical Adenitis syndrome in children. Clinical and immunological aspects.
  • Show author(s) (2001). Eosinophil inflammation in children with asthma, wheezing and atopic dermatitis. -.
Poster
  • Show author(s) (2015). Better respiratory outcomes for extremely preterm born children.
  • Show author(s) (2014). Alveolar nitric oxide(NO)in children born extremely preterm (EP).
Academic literature review
  • Show author(s) (2019). The immunology of the periodic fever, aphthous stomatitis, pharyngitis and cervical adenitis syndrome; what can the tonsils reveal. A literature review. . International Journal of Pediatric Otorhinolaryngology.
  • Show author(s) (2016). High flow nasal cannula in children: A literature review. Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine.
  • Show author(s) (2014). Acute bronchiolitis in infants, a review. Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine.
  • Show author(s) (2009). Emergency presentation and management of acute severe asthma in children. Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine. 11.
  • Show author(s) (2000). Bakteriell trakeitt hos barn. Tidsskrift for Den norske legeforening. 1417-1419.
  • Show author(s) (1997). Diskitt hos barn. Beskrivelse av tilstanden illustrert ved to eksempler. Tidsskrift for Den norske legeforening. 2184-2186.

More information in national current research information system (CRIStin)