Kjell Helenius - UTU Research Portal

Kjell Helenius

- Doctoral Researcher,
- Clinical Lecturer,
- University Research Fellow
Paediatrics and Adolescent Medicine (Department of Clinical Medicine)
- Docent,
Department of Clinical Medicine (Faculty of Medicine)

kkhele@utu.fi

: https://orcid.org/0000-0002-6296-6797

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Birth weight and head circumference for 22–29 weeks gestation neonates from an international cohort (2025)
- Archives of Disease in Childhood Fetal and Neonatal Edition
Fenton, Tanis R; Alshaikh, Belal; Kusuda, Satoshi; Helenius, Kjell; Modi, Neena; Norman, Mikael; Lui, Kei; Lehtonen, Liisa; Battin, Malcolm; Klinger, Gil; Vento, Maximo; Lastrucci, Vieri; Gagliardi, Luigi; Adams, Mark; Marba, Sérgio T M; Isayama, Tetsuya; Hakansson, Stellan; Bassler, Dirk; Shah, Prakesh S; International Network for Evaluation of Outcomes (iNeo) of Neonates Investigators
International Variation and Trends of Intraventricular Hemorrhage in Very Preterm Infants (2025)
- Neonatology
Hollens, Georgia; Schindler, Tim; Battin, Malcolm; Klinger, Gil; Adams, Mark; Vento, Maximo; Santacroce, Antonino; Hakansson, Stellan; Isayama, Tetsuya; Norman, Mikael; Kusuda, Satoshi; Lehtonen, Liisa; Helenius, Kjell; Modi, Neena; Shah, Prakesh S.; Lui, Kei; iNeo Neonatal Network
Keskonen (2025) Keskosen hoito ja kehitys Parikka, Vilhelmiina; Helenius, Kjell; Lehtonen, Liisa
Keskosvauvan kotiutuminen (2025) Keskosen hoito ja kehitys Parikka, Vilhelmiina; Helenius, Kjell
Kun vauva ei selviydy hengissä (2025) Keskosen hoito ja kehitys Lehtonen, Liisa; Helenius, Kjell
Outcomes of Preterm Infants Born at 22 to 23 Weeks' Gestation in 11 International Neonatal Networks (2025)
- JAMA Pediatrics
Isayama, Tetsuya; Norman, Mikael; Kusuda, Satoshi; Reichman, Brian; Lehtonen, Liisa; Lui, Kei; Adams, Mark; Vento Torres, Max; Filippi, Luca; Battin, Malcolm; Guinsburg, Ruth; Modi, Neena; Håkansson, Stellan; Klinger, Gil; de Almeida, Maria Fernanda; Helenius, Kjell; Bassler, Dirk; Su, Yi-Chen; Shah, Prakesh S.; International Network for Evaluation of Outcomes (iNeo) Investigators
Transfusion practices in 12 Neonatal Networks – Are we closer to adopting a restrictive transfusion approach? (2025)
- Neonatology
Klinger, Gil; Helenius, Kjell; Vento, Maximo; Kusuda, Satoshi; Norman, Mikael; Procianoy, Renato Soibelman; Goswami, Neha; Biran, Valerie; Bassler, Dirk; Reichman, Brian; Skubisz, Aleksandra; Battin, Malcolm; Lehtonen, Liisa; Lui, Kei; Mori, Annalisa; Beltempo, Marc; Adams, Mark; San Feliciano, Laura; Isayama, Tetsuya; Shah, Prakesh S.; iNeo Investigators
Close Collaboration with Parents Affects the Length of Stay and Growth in Preterm Infants: A Register-Based Study in Finland (2024)
- Neonatology
Itoshima Ryo, Helenius Kjell, Ahlqvist-Björkroth Sari, Vahlberg Tero, Lehtonen Liisa
Late-Onset Sepsis among Extremely Preterm Infants of 24-28 Weeks Gestation : An International Comparison in 10 High-Income Countries (2024)
- Neonatology
Klinger, Gil; Reichman, Brian; Norman, Mikael; Kusuda, Satoshi; Battin, Malcolm; Helenius, Kjell; Isayama, Tetsuya; Lui, Kei; Adams, Mark; Vento, Maximo; Hakansson, Stellan; Beltempo, Marc; Poggi, Chiara; San Feliciano, Laura; Lehtonen, Liisa; Bassler, Dirk; Yang, Junmin; Shah, Prakesh S.; International Network for Evaluating Outcomes of Neonates (iNeo)
National Very Preterm Infant Register imbedded in the Medical Birth Register in Finland (2023)
- Pediatric Medicine
Lehtonen Liisa, Helenius Kjell, Gissler Mika
Overlap between EEC and AEC syndrome and immunodeficiency in a preterm infant with a TP63 variant (2023)
- European Journal of Medical Genetics
Helenius Kjell, Ojala Liisa, Kainulainen Leena, Peltonen Sirkku, Hietala Marja, Pohjola Pia, Parikka Vilhelmiina
Preterm birth in the Nordic countries—Capacity, management and outcome in neonatal care (2023)
- Acta Paediatrica
Norman Mikael, Padkær Petersen Jesper, Stensvold Hans Jørgen, Thorkelsson Thordur, Helenius Kjell, Brix Andersson Charlotte, Ørum Cueto Heidi, Domellöf Magnus, Gissler Mika, Heino Anna, Håkansson Stellan, Jonsson Baldvin, Klingenberg Claus, Lehtonen Liisa, Metsäranta Marjo, Rønnestad Arild E., Trautner Simon
Detailed prenatal and postnatal MRI findings and clinical analysis of RAF1 in Noonan syndrome (2022)
- European Journal of Medical Genetics
Helenius Kjell, Parkkola Riitta, Arola Anita, Peltola Ville, Haanpää Maria K
International network for evaluating outcomes of neonates: outputs and future directions (2022)
- Pediatric Medicine
Shah P.S., Isayama T., Helenius K.K., Feliciano L.S., Beltempo M., Bassler D., Håkansson S., Rusconi F., Modi N., Battin M., Vento M., Adams M., Lehtonen L., Norman M., Kusuda S., Reichman B., Lui K., Lee S.K.; the International Network for Evaluating Outcomes of Neonates (iNeo)
International Variation in the Management of Patent Ductus Arteriosus and its Association with Infant Outcomes: A Survey and Linked Cohort Study (2022)
- Journal of Pediatrics
Isayama Tetsuya, Kusuda Satoshi, Adams Mark, Berti Elettra, Battin Malcom, Helenius Kjell, Håkansson Stellan, Vento Max, Norman Mikael, Reichman Brian, Noguchi Akihiko, Lee K. Shoo, Bassler Dirk, Lui Kei, Lehtonen Liisa, Yang Junmin, Shah S. Prakesh; on behalf of theInternational Network for Evaluating Outcomes of Neonates (iNeo) Investigators
Means of reaching successful antenatal transfers to level 3 hospitals in cases of threatened very preterm deliveries: a national survey (2022)
- Journal of Maternal-Fetal and Neonatal Medicine
Helenius Kjell, Mäkikallio Kaarin, Valpas Antti, Lehtonen Liisa
Five-minute Apgar score and outcomes in neonates of 24-28 weeks' gestation (2021)
- Archives of Disease in Childhood Fetal and Neonatal Edition
Shah Prakesh S, Norman Mikael, Rusconi Franca, Kusuda Satoshi, Reichman Brian, Battin Malcolm, Bassler Dirk, Modi Neena, Hakansson Stellan, Yang Jie, Lee Shoo K, Helenius Kjell, Vento Maximo, Lehtonen Liisa, Adams Mark, Isayama Tetsuya, Lui Kei, Gagliardi Luigi ; International Network for Evaluating Outcomes of Neonates (iNeo) Investigators
Variations in Neonatal Length of Stay of Babies Born Extremely Preterm: An International Comparison Between iNeo Networks (2021)
- Journal of Pediatrics
Seaton Sarah E, Draper Elizabeth S, Adams Mark, Kusuda Satoshi, Håkansson Stellan, Helenius Kjell, Reichman Brian, Lehtonen Liisa, Bassler Dirk, Lee Shoo K, Vento Maximo, Darlow Brian A, Rusconi Franca, Beltempo Marc, Isayama Tetsuya, Lui Kei, Norman Mikael, Yang Junmin, Shah Prakesh S, Modi Neena; FMedSci for the UK Neonatal Collaborative, on behalf of the International Network for Evaluating Outcomes of Neonates (iNeo) Investigators
Association of Early Postnatal Transfer and Birth Outside a Tertiary Hospital With Mortality and Severe Brain Injury in Extremely Preterm Infants: Observational Cohort Study With Propensity Score Matching (2020)
- Obstetrical and Gynecological Survey
Helenius K, Longford N, Lehtonen L, Modi N, Gale C
Centralisation of very preterm deliveries and benchmarking of neonatal care (2020) Helenius Kjell