Dynamic neurosonographic study of structural changes in the central nervous system in premature infants with low Apgar score

ORIGINAL STUDIES

  • Tatiana E. Taranushenko Professor V.F. Voino-Yasenetsky Krasnoyarsk State Medical University; Krasnoyarsk Regional Clinical Center for Maternal and Child Welfare https://orcid.org/0000-0003-2500-8001
  • Nikita A. Parshin Professor V.F. Voino-Yasenetsky Krasnoyarsk State Medical University; Krasnoyarsk Regional Clinical Center for Maternal and Child Welfare https://orcid.org/0000-0002-7991-1063
  • Ekaterina V. Antsiferova Professor V.F. Voino-Yasenetsky Krasnoyarsk State Medical University; Krasnoyarsk Regional Clinical Center for Maternal and Child Welfare https://orcid.org/0000-0002-5179-3122
  • Olga V. Gavrilenko Krasnoyarsk Regional Clinical Center for Maternal and Child Welfare
  • Tatiana A. Antipina Krasnoyarsk Regional Clinical Center for Maternal and Child Welfare
  • Liliya A. Filippova Krasnoyarsk Regional Clinical Center for Maternal and Child Welfare
Keywords:
premature infants neurosonography hypoxic-ischemic brain injury intraventricular hemorrhage недоношенные дети нейросонография гипоксически-ишемическое поражение головного мозга внутрижелудочковое кровоизлияние

Abstract

Background.Neurosonography is a key tool for the timely detection and assessment of structural changes in the central nervous system in premature infants. This method is particularly relevant in infants with low Apgar scores, as it allows for non-invasive and real-time determination of the severity of brain damage, which is critical for predicting outcomes and optimizing management.

The aim— to study the dynamics of structural changes in the central nervous system in premature infants with low Apgar scores at birth using neurosonography to identify the developmental features of hypoxic-ischemic and hypoxic-hemorrhagic brain lesions.

Materials and methods.A total of 123 very-low-birth-weight and extremely-low-birth-weight (<1500 g) premature infants were examined. They were divided into groups with Apgar scores of 1–3 at birth (n=45) and 4–7 at birth (n=55), as well as a control group with Apgar scores of 8–10 at birth (n=23). Neurosonography was performed on days 1–2 and 7–8 of life.

Results.On the first day of life, neurosonographic findings were comparable across all groups. By day 7, a negative evolution of brain damage was observed in infants with low Apgar scores: the incidence of hypoxic-hemorrhagic lesions in Group 1 (Apgar scores of 1–3) increased from 34.3 to 50.0%, including the manifestation of severesevere intraventricular hemorrhageof grades III and IV. A diffuse increase in parenchymal echogenicity on the second day was observed in all groups (65.2–78.2%). However, by the seventh day, the frequency of this sign in the control group decreased to 53.3% (transient), while in Group 1 it remained at a high level (76.4%), indicating the development of irreversible ischemic changes.

Conclusions.Low Apgar scores in premature infants withvery low birth weight and extremely low birth weightare associated with negative dynamics of structural changes in the central nervous system (an increase in the incidence of IVH and persistent periventricular hyperechogenicity) by the end of the first week of life. Persistence of diffuse increased parenchymal echogenicity for more than seven days is an objective criterion for ischemic damage, while early hyperechogenicity in the control group is more often transient. The data obtained confirm the need for serial neurosonographic monitoring (days 1–2 and 7–8) to differentiate transient changes from true brain damage.

Author Biographies

Tatiana E. Taranushenko, Professor V.F. Voino-Yasenetsky Krasnoyarsk State Medical University; Krasnoyarsk Regional Clinical Center for Maternal and Child Welfare

MD, Ph D, Dr Med Sci, Professor, Head, Department of Pediatrics at the Institute of Postgraduate Education, Professor V.F. Voino-Yasenetsky Krasnoyarsk State Medical University, Krasnoyarsk, Russia; Pediatrician, Department of Anesthesiology and Intensive Care No. 1, Krasnoyarsk Regional Clinical Center for Maternal and Child Welfare, Krasnoyarsk, Russia

Nikita A. Parshin, Professor V.F. Voino-Yasenetsky Krasnoyarsk State Medical University; Krasnoyarsk Regional Clinical Center for Maternal and Child Welfare

MD, Ph D, Assistant Professor, Department of Pediatrics at the Institute of Postgraduate Education, Education, Professor V.F. Voino-Yasenetsky Krasnoyarsk State Medical University; address: 1 Partizana Zheleznyaka str., Krasnoyarsk, 660022, Russia; Anesthesiologist-Intensivist, Department
of Anesthesiology and Intensive Care No. 5, Krasnoyarsk Regional Clinical Center for Maternal and Child Welfare, Krasnoyarsk, Russia

Ekaterina V. Antsiferova, Professor V.F. Voino-Yasenetsky Krasnoyarsk State Medical University; Krasnoyarsk Regional Clinical Center for Maternal and Child Welfare

MD, Ph D, Associate Professor, Department of Pediatrics at the Institute of Postgraduate Education, Professor V.F. Voino-Yasenetsky Krasnoyarsk State Medical University; Krasnoyarsk, Russia; Neonatologist, Department of Neonatal Pathology and Premature Infants, Krasnoyarsk Regional Clinical Center for Maternal and Child Welfare, Krasnoyarsk, Russia

Olga V. Gavrilenko, Krasnoyarsk Regional Clinical Center for Maternal and Child Welfare

Ultrasound Physician, Ultrasound and Functional Diagnostics Department No. 2, Krasnoyarsk Regional Clinical Center for Maternal and Child Health, Krasnoyarsk, Russia

Tatiana A. Antipina, Krasnoyarsk Regional Clinical Center for Maternal and Child Welfare

Ultrasound Physician, Ultrasound and Functional Diagnostics Department No. 2, Krasnoyarsk Regional Clinical Center for Maternal and Child Health, Krasnoyarsk, Russia

Liliya A. Filippova, Krasnoyarsk Regional Clinical Center for Maternal and Child Welfare

Ultrasound Physician, Ultrasound and Functional Diagnostics Department No. 2, Krasnoyarsk Regional Clinical Center for Maternal and Child Health, Krasnoyarsk, Russia

References

1. Быкова Ю.К., Ушакова Л.В., Филиппова Е.А. и др. Геморрагические поражения головного мозга у недоношенных детей: патогенез и ультразвуковая диагностика. Неонатология: новости, мнения, обучение. 2024;12(1):47–57. https://doi.org/10.33029/2308-2402-2024-12-1-47-57.

2. Быкова Ю.К., Ушакова Л. В., Филиппова Е.А. и др. Структурные особенности головного мозга глубоконедоношенных новорожденных при ультразвуковом исследовании. Неонатология: новости, мнения, обучение. 2023;11(2):39–47. https://doi.org/10.33029/2308-2402-2023-11-2-39-47. EDN: EXQSKN.

3. Зиядуллаева Х.О., Дильмурадова К.Р. Особенности нейросонографии у новорожденных с перинатальными поражениями нервной системы. Новый день в медицине. 2023;6(56):121–127. EDN: AAWOCA.

4. Миронова А.К., Самигулина М.Г., Османов И.М. и др. Особенности нервно-психического развития недоношенных детей, родившихся с очень низкой и экстремально низкой массой тела. Российский вестник перинатологии и педиатрии. 2021;66(1):59–65. https://doi.org/10.21508/1027-4065-2021-66-1-59-65.

5. Суворов И.А., Амирханова Д.Ю., Дегтярева А.В. и др. Неонатальные судороги у глубоко недоношенных детей с экстремально низкой и очень низкой массой тела при рождении: распространенность и трансформация в структурную эпилепсию. Акушерство и гинекология. 2021;(10):134–42. https://doi.org/10.18565/aig.2021.10.134-142.

6. Cai Y., Jiang Y., Wang P., et al. Risk factors for early periventricular intraventricular hemorrhage in extremely low birth weight infants: a retrospective study. BMC Pediatr. 2025;25(1):58. https://doi.org/10.1186/s12887-025-05390-5.

7. Hand I.L., Shellhaas R.A, Milla S.S. Routine neuroimaging of the preterm brain. Pediatrics. 2020;146(5):e2020029082. https://doi.org/10.1542/peds.2020-029082.

8. Piccolo B., Marchignoli M., Pisani F. Intraventricular hemorrhage in preterm newborn: Predictors of mortality. Acta Biomed. 2022;93(2):e2022041. https://doi.org/10.23750/abm.v93i2.11187.

9. Pisani F., Barilli A.L., Sisti L. et al. Preterm infants with video-EEG confirmed seizures: outcome at 30 months of age. Brain Dev. 2008;30(1):20–30. https://doi.org/10.1016/j.braindev.2007.05.003

10. Piscopo B.R., Sutherland A.E., Malhotra A. et al. Pathogenesis of preterm intraventricular haemorrhage. Dev Neurosci. 2025;1–12. https://doi.org/10.1159/000546607.

11. Uzianbaeva L., Yan Y., Joshi T. et al. Methods for monitoring risk of hypoxic damage in fetal and neonatal brains: a review. Fetal Diagn Ther. 2022;49(1):1–24. https://doi.org/10.1159/000520987.

12. Volpe J.J. Neurology of the Newborn. 6th ed. Philadelphia: Elsevier, 2018. 1056 p.

13. World Health Organization. Newborns: reducing mortality. Geneva: WHO; 2025.

14. Zhang Q., Zhou X. Review on the application of imaging examination for brain injury in premature infants. Front Neurol. 2023;14:1100623. https://doi.org/10.3389/fneur.2023.1100623.