- E-mailthomas.halvorsen@uib.no
- Visitor AddressHaukeland universitetssykehus, Laboratoriebygget5009 Bergen
- Postal AddressPostboks 78045020 Bergen
Updated list of publications on PubMed, please click the link below:
https://www.ncbi.nlm.nih.gov/myncbi/16uVRzeeBPOkH/bibliography/public/
Academic article
- (2024). Health-related quality of life in two birth cohorts of extremely preterm born adults. Acta Paediatrica. 10 pages.
- (2024). Expiratory airflow limitation in adults born extremely preterm: A systematic review and meta-analysis. Paediatric Respiratory Reviews.
- (2023). Use of inhaled ipratropium bromide to improve exercise-induced laryngeal obstruction cannot be recommended. European Respiratory Journal Open Research (ERJ Open Research). 9 pages.
- (2023). Translaryngeal Resistance: A Measurement to Assist Decision Making in Upper Airway Pathology. American Journal of Respiratory and Critical Care Medicine. E32-E34.
- (2023). Prevalence and impact of exercise-induced laryngeal obstruction in asthma: a study protocol for a cross-sectional and longitudinal study. BMJ Open. 8 pages.
- (2023). Histologic chorioamnionitis in extremely preterm births, microbiological findings and infant outcome. Journal of Maternal-Fetal & Neonatal Medicine.
- (2023). Diagnosis of vocal cord dysfunction/inducible laryngeal obstruction: an International Delphi Consensus Study. Journal of Allergy and Clinical Immunology.
- (2023). Blood eosinophils during bronchiolitis: Associations with atopy, asthma and lung function in young adults. Acta Paediatrica. 820-829.
- (2023). Are BMI and adipokines associated with asthma, atopy and lung function in young adults previously hospitalized for bronchiolitis? Respiratory Medicine.
- (2022). Tracking of lung function from 10 to 35 years after being born extremely preterm or with extremely low birth weight. Thorax. 790-798.
- (2022). Reliability of translaryngeal airway resistance measurements during maximal exercise. European Respiratory Journal Open Research (ERJ Open Research). 1-9.
- (2022). Long-term follow-up of self-reported mental health and health-related quality of life in adults born extremely preterm. Early Human Development. 8 pages.
- (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.
- (2022). Human organotypic airway and lung organoid cells of bronchiolar and alveolar differentiation are permissive to infection by influenza and SARS-CoV-2 respiratory virus. Frontiers in Cellular and Infection Microbiology. 1-23.
- (2022). Exercise-induced Laryngeal Obstruction: Protocol for a Randomized Controlled Treatment Trial. Frontiers in pediatrics.
- (2022). Differences in lung function, bronchial hyperresponsiveness and respiratory health between elite athletes competing in different sports. European Journal of Sport Science (EJSS). 10 pages.
- (2022). Development of health-related quality of life and subjective health complaints in adults born extremely preterm: a longitudinal cohort study. Health and Quality of Life Outcomes. 1-11.
- (2022). Conundrums in the breathless athlete; exercise-induced laryngeal obstruction or asthma? Scandinavian Journal of Medicine & Science in Sports. 1041-1049.
- (2022). Asthma, atopy and lung function in young adults after hospitalisation for bronchiolitis in infancy: Impact of virus and sex. BMJ Open Respiratory Research.
- (2022). Adjustments of non-invasive ventilation and mechanically assisted cough by combining ultrasound imaging of the larynx with transnasal fibre-optic laryngoscopy: A protocol for an experimental study. BMJ Open. 1-7.
- (2022). A novel validated tool to score symptom burden in exercise-induced laryngeal obstruction: can we simplify patient follow-up and research? The Lancet Respiratory Medicine. 131-132.
- (2021). Self-Reported Health in Adolescents With Exercise-Induced Laryngeal Obstruction; A Cross-Sectional Study. Frontiers in pediatrics. 1-7.
- (2021). Reliability of maximum oxygen uptake in cardiopulmonary exercise testing with continuous laryngoscopy. European Respiratory Journal Open Research (ERJ Open Research). 1-9.
- (2021). Placental histology predicted adverse outcomes in extremely premature neonates in Norway-population-based study. Acta Paediatrica. 8 pages.
- (2021). Maternal education and cognitive development in 15 European very-preterm birth cohorts from the RECAP Preterm platform. International Journal of Epidemiology.
- (2021). Lifelong exposure to air pollution and greenness in relation to asthma, rhinitis and lung function in adulthood. Environment International. 10 pages.
- (2021). Induction of alveolar and bronchiolar phenotypes in human lung organoids. Physiological Reports.
- (2021). Inducible laryngeal obstruction in asthma. European Respiratory Journal.
- (2021). Early life growth and associations with lung function and bronchial hyperresponsiveness at 11-years of age. Respiratory Medicine. 1-8.
- (2021). Development of lung diffusion to adulthood following extremely preterm birth. European Respiratory Journal.
- (2021). Clinical responses following inspiratory muscle training in exercise-induced laryngeal obstruction. European Archives of Oto-Rhino-Laryngology. 12 pages.
- (2021). Breathing patterns in people with exercise-induced laryngeal obstruction. Physiological Reports. 1-10.
- (2021). Benefit-Risk Assessment of Off-Label Drug Use in Children: The Bravo Framework. Clinical Pharmacology and Therapeutics. 952-965.
- (2020). Voice and Exercise Related Respiratory Symptoms in Extremely Preterm Born Children After Neonatal Patent Ductus Arteriosus. Frontiers in pediatrics. 10 pages.
- (2020). Predicting physical activity in a national cohort of children born extremely preterm. Early Human Development. 1-8.
- (2020). Heart rate during the first 24 hours in term-born infants. Archives of Disease in Childhood: Fetal and Neonatal Edition. 5 pages.
- (2020). European Respiratory Society guideline on long-term management of children with bronchopulmonary dysplasia. European Respiratory Journal. 1-17.
- (2020). Electromagnetic inductance plethysmography to study airflow after nebulized saline in bronchiolitis. Pediatric Pulmonology.
- (2020). Associations of preconception exposure to air pollution and greenness with offspring asthma and hay fever. International Journal of Environmental Research and Public Health (IJERPH). 1-14.
- (2019). Tardy development of safe medicines for children: a Nordic network offers new platform to reduce this inequity. Acta Paediatrica. 992-993.
- (2019). Sleep problems, behavioural problems and respiratory health in children born extremely preterm: a parental questionnaire study . BMJ Paediatrics Open. 1-7.
- (2019). Severe exercise-induced laryngeal obstruction treated with supraglottoplasty. Frontiers in surgery. 1-9.
- (2019). Lung function and bronchial hyper-reactivity from 11 to 18 years in children with bronchiolitis in infancy . Pediatric Allergy and Immunology. 57-65.
- (2019). Larynx: The Complex Gateway to the Lungs. Respiratory care.
- (2019). Feasibility and tolerability of measuring translaryngeal pressure during exercise. The Laryngoscope. 2748-2753.
- (2019). Expiratory airflow in late adolescence and early adulthood in individuals born very preterm or with very low birthweight compared with controls born at term or with normal birthweight: a meta-analysis of individual participant data. The Lancet Respiratory Medicine. 677-686.
- (2019). Exercise-induced laryngeal obstruction in athletes treated with inspiratory muscle training. BMJ Open sport & exercise medicine. 1-8.
- (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.
- (2018). Ventilator flow data predict bronchopulmonary dysplasia in extremely premature neonates. ERS Monograph. 1-7.
- (2018). The Heterogeneity of Exercise-induced Laryngeal Obstruction. American Journal of Respiratory and Critical Care Medicine. 1068-1069.
- (2018). Respiratory morbidity through the first decade of life in a national cohort of children born extremely preterm. BMC Pediatrics. 1-13.
- (2018). Renal function and blood pressure in 11 year old children born extremely preterm or small for gestational age. PLOS ONE. 1-11.
- (2018). Prenatal and neonatal factors predicting sleep problems in children born extremely preterm or with extremely low birthweight. Frontiers in pediatrics. 1-9.
- (2018). Laryngeal responses to mechanically assisted cough in progressing amyotrophic lateral sclerosis. Respiratory care. 538-549.
- (2018). Bronchial hyper-responsiveness in preterm-born subjects: A systematic review and meta-analysis. Pediatric Allergy and Immunology. 715-725.
- (2017). Ventilatory efficiency in children and adolescents born extremely preterm. Frontiers in Physiology. 8 pages.
- (2017). Mid-childhood outcomes after pre-viable preterm premature rupture of membranes. Journal of Perinatology. 1053-1059.
- (2017). Lung function at term in extremely preterm-born infants: A regional prospective cohort study. BMJ Open. 1-10.
- (2017). Inducible laryngeal obstruction: An official joint European Respiratory Society and European Laryngological Society statement. European Respiratory Journal.
- (2016). Respiratory rate during the first 24 hours of life in healthy term infants. Pediatrics.
- (2016). Increased bronchial hyperresponsiveness and higher asymmetric dimethylarginine levels after fetal growth restriction. American Journal of Respiratory Cell and Molecular Biology. 83-89.
- (2016). Exercise inducible laryngeal obstruction: diagnostics and management. Paediatric Respiratory Reviews. 86-94.
- (2016). Electromagnetic inductance plethysmography is well suited to measure tidal breathing in infants. ERS Monograph.
- (2016). Congenital laryngomalacia is related to exerciseinduced laryngeal obstruction in adolescence. Archives of Disease in Childhood. 443-448.
- (2015). Health-related quality of life may deteriorate from adolescence to young adulthood after extremely preterm birth. Acta Paediatrica. 948-955.
- (2015). Health-related quality of life and emotional and behavioral difficulties after extreme preterm birth: Developmental trajectories. PeerJ. 1-18.
- (2015). Comparison between two assessment methods for exercise-induced laryngeal obstructions. European Archives of Oto-Rhino-Laryngology. 425-430.
- (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.
- (2015). Adult respiratory outcomes of extreme preterm birth. A regional cohort study. Annals of the American Thoracic Society. 313-322.
- (2015). Adolescents who were born extremely preterm demonstrate modest decreases in exercise capacity. Acta Paediatrica. 1174-1181.
- (2015). A new non-invasive method of infant spirometry demonstrates a level of repeatability that is comparable to traditional methods. Acta Paediatrica. 1130-1137.
- (2014). Larynx during exercise: the unexplored bottleneck of the airways. European Archives of Oto-Rhino-Laryngology. 2101-2109.
- (2014). Exercise capacity after extremely preterm birth: Development from adolescence to adulthood. Annals of the American Thoracic Society. 537-545.
- (2014). Blood eosinophil counts during bronchiolitis are related to bronchial hyper-responsiveness and lung function in early adolescence. Acta Paediatrica. 86-92.
- (2013). Severe bronchiolitis in infancy: Can asthma in adolescence be predicted? Pediatric Pulmonology. 538-544.
- (2013). Pulmonary gas transfer in children and adolescents born extremely preterm. European Respiratory Journal. 1536-1544.
- (2013). Lung function after preterm birth: development from mid-childhood to adulthood. Thorax. 767-776.
- (2013). Laryngeal response patterns to mechanical insufflation-exsufflation in healthy subjects. American Journal of Physical Medicine & Rehabilitation. 920-929.
- (2013). Laryngeal movements during inspiratory muscle training in healthy subjects. Journal of Voice. 448-453.
- (2013). Increased inflammatory markers in adolescents born extremely preterm and small for gestational age. Journal of Pediatric Biochemistry. 239-246.
- (2013). Exhaled nitric oxide is related to atopy, but not asthma in adolescents with bronchiolitis in infancy. BMC Pulmonary Medicine.
- (2012). The outcome after severe bronchiolitis is related to gender and virus. Pediatric Allergy and Immunology. 391-398.
- (2012). Pain tolerance and pain perception in adolescents born extremely preterm. Journal of Pain. 978-987.
- (2012). Aerobic capacity and exercise performance in young people born extremely preterm. Pediatrics. E97-E105.
- (2011). Exercise-induced laryngeal obstruction: natural history and effect of surgical treatment. European Archives of Oto-Rhino-Laryngology. 1485-1492.
- (2010). Left vocal cord paralysis after extreme preterm birth, a new clinical scenario in adults. Pediatrics. E1569-E1577.
- (2010). Health related quality of life after extremely preterm birth: a matched controlled cohort study. Health and Quality of Life Outcomes. 8 pages.
- (2009). Neonatal bronchopulmonary dysplasia predicts abnormal pulmonary HRCT scans in long-term survivors of extreme preterm birth. Thorax. 405-410.
- (2009). Exercise induced dyspnea in the young. Larynx as the bottleneck of the airways. Respiratory Medicine. 1911-1918.
- (2009). Audiovisual assessment of exercise-induced laryngeal obstruction: reliability and validity of observations. European Archives of Oto-Rhino-Laryngology. 1929-1936.
- (2008). A novel mitochondrial ND5 (MTND5) gene mutation giving isolated exercise intolerance. Neuromuscular Disorders. 310-314.
- (2007). Surgical treatment of exercise-induced laryngeal dysfunction. European Archives of Oto-Rhino-Laryngology. 401-407.
- (2007). Continuous Laryngoscopy Exercise Test: A Method for Visualizing Laryngeal Dysfunction During Exercise (Letter). The Laryngoscope. 1509-1510.
- (2006). Mast cell activation and leukotriene secretion in wheezing infants. Relation to respiratory syncytial virus and outcome. Pediatric Allergy and Immunology. 37-42.
- (2006). High-resolution CT of the chest in children and young adults who were born prematurely: Findings in a population-based study. American Journal of Roentgenology. 1012-1018.
- (2006). Continuous laryngoscopy exercise test: a method for visualizing laryngeal dysfunction during exercise. The Laryngoscope. 52-57.
- (2006). Better care of immature infants; Has it influenced long-term pulmonary outcome? Acta Paediatrica. 547-554.
- (2005). Characteristics of asthma and airway hyper-responsiveness after premature birth. Pediatric Allergy and Immunology. 487-494.
- (2005). Assessment of lung volumes in children and adolescents: comparison of two plethysmographic techniques. Clinical Physiology and Functional Imaging. 62-68.
- (2004). Pulmonary outcome in adolescents of extreme preterm birth: a regional cohort study. Acta Paediatrica. 1294-1300.
- (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.
- (1997). Expression of colonization factor I fimbriae by enterotoxigenic Escherichia coli; influence of growth conditions and a recombinant positive regulatory gene. APMIS - Journal of Pathologiy, Microbiology and Immunology. 247-254.
Academic lecture
- (2019). Respiratory- and voice symptoms among extremely preterm born children with prolonged ventilator dependency. A Norwegian national cohort study. .
- (2018). Symptoms of vocal cord paresis among children born extremely premature with- or without a PDA ligation. .
- (2018). Is continuous laryngoscopy during cardiopulmonary exercise testing reliable for measuring maximum oxygen uptake?
- (2010). Respiratory follow-up of the grown preterm.
- (2007). Lung sequelae after preterm birth.
- (2007). Exercise induced Vocal Cord Dysfunction.
- (2007). Exercise induced Vocal Cord Dysfunction.
- (2005). Exercise-induced vocal cord dysfunction.
- (2003). Obstructive pulmonary disease and physical activity in childhood.
- (2003). Exercise induced stridor: Visualising the problem.
Editorial
- (2024). Ambient Air Pollution and Morbidities in Bronchopulmonary Dysplasia; It’s All about the Money. Annals of the American Thoracic Society. 34-36.
- (2018). Our tiny preemies: What will become of their future pulmonary health? Annals of the American Thoracic Society. 1276-1278.
Reader opinion piece
- (2017). Systemiske steroider til førskolebarn med symptomer fra nedre luftveier. Tidsskrift for Den norske legeforening. 698-699.
- (2013). The optimal management for patients (Letter). Pediatric Pulmonology. 936-936.
- (2011). Use of Post-Exercise Laryngoscopy to Evaluate Exercise Induced Dyspnea (Letter). Pediatric Pulmonology. 515-516.
Short communication
- (2022). From bedside to bench - In vivo and in vitro evaluation of mechanically assisted cough treatment in a patient with bulbar Amyotrophic Lateral Sclerosis. Respiratory Medicine Case Reports. 1-4.
Letter to the editor
- (2023). Reply. Journal of Allergy and Clinical Immunology.
- (2023). Impaired Lung Function in Extremely Preterm-Born Adults in Their Fourth Decade of Life. American Journal of Respiratory and Critical Care Medicine. 493-495.
- (2023). Blood eosinophils during bronchiolitis were not associated with adult asthma in a Norwegian cohort study. Acta Paediatrica.
- (2020). Reply to Korppi and Riikonen. Pediatric Allergy and Immunology. 720-721.
- (2018). Laryngoscopy Can Be a Valuable Tool for Unexpected Therapeutic Response in Noninvasive Respiratory Interventions. Respiratory care. 1459-1461.
- (2011). Larynx in exercising humans; the unexplored bottleneck of the airways (Letter). Pediatrics. 1 pages.
Doctoral dissertation
- (2021). From horses to humans: a comparative study developing the first protocol for measuring upper airway pressures in exercising humans. 44.
- (2018). Tidal breathing parameters in extremely premature infants. Feasibility and clinical utility of electromagnetic inductance plethysmography.
- (2018). Laryngeal response patterns during mechanically assisted cough in Amyotrophic Lateral Sclerosis.
- (2016). Long-term Respiratory Outcomes of Extreme Preterm Birth. A regional cohort study.
- (2015). Exercise Capacity after extremely preterm birth. Development from childhood to adulthood.
- (2006). Lung sequelae after premature birth. A population based, controlled, long-term cohort study (dissertation).
Interview
- (2014). Forskning på legemidler til barn må gjøres i Norge.
Abstract
- (2020). Conundrums of exercise-related breathing problems. Epiglottic, laryngeal, or bronchial obstruction? American Journal of Respiratory and Critical Care Medicine. e142-e143.
- (2016). Ventilatory efficiency in children and adolescents born extremely preterm. European Respiratory Journal.
- (2013). Day To Day Repeatability And Circadian Variation Of Lung Volume Measurements. Medicine & Science in Sports & Exercise. 291-291.
Poster
- (2023). Strupens responser under non-invasiv ventilasjonsstøtte hos friske frivillige.
- (2020). Prevalence and consequences of left vocal cord paralysis in young adults born extremely premature with a history of neonatal patent ductus arteriosus surgery.
- (2016). Respiratory morbidity in extremely premature born children and later physical Activity. .
- (2014). Spirometry- a tool for diagnosing exercise induced laryngeal obstruction (EILO)?
- (2014). Exercise induced laryngeal obstruction(EILO)diagnosed with laryngoscopy during rest or during exercise?
- (2014). Exercise induced inspiratory symptoms.
- (2014). Exercise induced inspiratory stridor (EIIS) in athletes.
- (2014). Exercise Induced Inspiratory Stridor (EIIS) - A growing Challenge during Physical activity.
- (2014). Alveolar nitric oxide(NO)in children born extremely preterm (EP).
Academic literature review
- (2023). Unravelling the respiratory health path across the lifespan for survivors of preterm birth. The Lancet Respiratory Medicine.
- (2022). Exercise-induced laryngeal obstruction (EILO) in athletes: a narrative review by a subgroup of the IOC Consensus on 'acute respiratory illness in the athlete'. British Journal of Sports Medicine. 622-629.
- (2022). Exercise related respiratory problems in the young—Is it exercise-induced bronchoconstriction or laryngeal obstruction? Frontiers in pediatrics. 7 pages.
- (2022). Evidence-based off-label use of drugs for children and adolescents: International consortium of pediatric formularies providing the best-available evidence. Monatsschrift fur Kinderheilkunde. 207-216.
- (2021). Upper Airway Assessment and Responses During Mechanically Assisted Cough. Respiratory care. 1196-1213.
- (2019). Exercise induced laryngeal obstructions in humans and equines. A comparative review . Frontiers in Physiology. 1-10.
- (2018). Working towards a common transatlantic approach for evaluation of exercise-induced laryngeal obstruction. Immunology and allergy clinics of North America. 281-292.
- (2018). Bronchial hyper-responsiveness after preterm birth. Paediatric Respiratory Reviews. 34-40.
- (2017). Left vocal cord paralysis after patent ductus arteriosus ligation: A systematic review. Paediatric Respiratory Reviews. 74-85.
- (2016). A systematic review and meta-analysis: Prevalence and consequences of left recurrent laryngeal nerve paresis following surgical ligation of patent ductus arteriosus in extremely premature infants. PROSPERO 2016:CRD42016029921 Available from http://www.crd.york.ac.uk/PROSPERO_REBRANDING/display_record.asp?ID=CRD42016029921. Prospero: a journal of new thinking in philosophy for education.
- (2015). Respiratory illness contributed significantly to morbidity in children born extremely premature or with extremely low birthweights in 1999-2000. Acta Paediatrica. 1189-1198.
- (2015). ERS/ELS/ACCP 2013 international consensus conference nomenclature on inducible laryngeal obstructions. European Respiratory Review. 445-450.
- (2011). Exercise Induced Laryngeal Obstruction (EILO): Diagnosis and Management. Journal of ENT masterclass. 117-123.
- (2009). Emergency presentation and management of acute severe asthma in children. Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine. 11.
Article in business/trade/industry journal
- (2018). Heterogeniteten ved anstrengelsesutløst laryngeal obstruksjon. BestPractice. Lungemedisin. 22-26.
- (2016). Anstrengelsesutløst laryngeal obstruksjon - diagnostikk og behandling. Best Practice Lungemedisin i Norge. 22-25.
More information in national current research information system (CRIStin)
Updated list of publications on PubMed, please click the link below:
https://www.ncbi.nlm.nih.gov/myncbi/16uVRzeeBPOkH/bibliography/public/