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Binder-Heschl, C; Urlesberger, B; Schwaberger, B; Koestenberger, M; Pichler, G.
Borderline hypotension: how does it influence cerebral regional tissue oxygenation in preterm infants?
J Matern Fetal Neonatal Med. 2016; 29(14):2341-2346 Doi: 10.3109/14767058.2015.1085020
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Führende Autor*innen der Med Uni Graz
Binder-Heschl Corinna
Pichler Gerhard
Co-Autor*innen der Med Uni Graz
Koestenberger Martin
Schwaberger Bernhard Christian
Urlesberger Berndt

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To monitor cerebral regional tissue oxygenation (crSO2) of preterm infants continuously and to analyze the influence of arterial hypotension on crSO2. In this prospective, observational study crSO2, peripheral oxygen saturation (SpO2), heart rate (HR) and mean arterial blood pressure (MABP) were monitored continuously for 24 h, starting within the first 6 h after birth. Furthermore, cerebral fractional tissue oxygen extraction (cFTOE) was calculated. Preterm neonates with and without arterial hypotension (MABP below the gestational age in weeks) were compared to each other. Forty-six preterm infants could be analyzed, 17 with (33.4 ± 1.9 weeks, 2016.5 ± 548.5 g) and 29 without arterial hypotension (33.3 ± 1.3 weeks, 1924.7 ± 451.9 g). Altogether, we detected 30 episodes of hypotension, with a mean duration of 1.6 ± 1.2 h per infant and a mean decrease in MABP of 2.2 ± 0.9 mmHg. During hypotension mean crSO2 was 7 5 ± 11%, 2 h prior to that 76 ± 10% and 2 h after the hypotension 7 7 ± 10%, therefore no significant alterations could be observed. Moreover, there was no significant difference in mean 24-h crSO2, SpO2 and cFTOE between the two groups. Mild short-term hypotensive episodes in preterm infants did not affect crSO2. This suggests that cerebral autoregulation is maintained in case of borderline-hypotension and may protect infants from cerebral injury.
Find related publications in this database (using NLM MeSH Indexing)
Blood Pressure - physiology
Brain - diagnostic imaging
Cerebrovascular Circulation - physiology
Echocardiography -
Heart Rate - physiology
Homeostasis - physiology
Humans -
Hypotension - physiopathology
Infant, Newborn -
Infant, Premature - physiology
Intensive Care Units, Neonatal -
Monitoring, Physiologic -
Oxygen - blood
Prospective Studies -
Spectroscopy, Near-Infrared -

Find related publications in this database (Keywords)
Arterial hypotension
cerebral autoregulation
cerebral regional tissue oxygenation
near-infrared spectroscopy
peterm infants
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