Výsledky vyhledávání - "John Klaessens"

Cerebral O2 supply thresholds for the preservation of electrocortical brain activity during hypotension in near-term-born lambs

Autor: Sandra van Os, Djien Liem, Jeroen C.W. Hopman, John Klaessens, Margot van de Bor

Publikováno v: Pediatric Research, 57, 3, pp. 358-62
Pediatric Research, 57, 358-62

Item does not contain fulltext The fetal brain develops rapidly during the last trimester of pregnancy. Therefore, the brain of infants who are born preterm is vulnerable to changes in oxygen and nutrient supply in the neonatal period. The objective

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b11f8649b0d8c6359aa8086af8f0bc47
https://hdl.handle.net/2066/47997

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Measurement of the ductal L-R shunt during extracorporeal membrane oxygenation in the lamb

Autor: John Klaessens, Arno van Heijst, Ronald B. Tanke, Otto Daniëls, Cees Festen

Publikováno v: Journal of Pediatric Surgery, 39, 1, pp. 43-7
Journal of Pediatric Surgery, 39, 43-7

Contains fulltext : 57258.pdf (Publisher’s version ) (Closed access) OBJECTIVE: In neonates, initially a ductal shunt is often observed during veno-arterial extracorporeal membrane oxygenation (ECMO). Depending on the degree of pulmonary hypertensi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f5c8079c89431ef2ff8aed9ef4835b0
https://doi.org/10.1016/j.jpedsurg.2003.09.017

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Preservation of electrocortical brain activity during hypoxemia in preterm lambs

Autor: Jeroen C.W. Hopman, Margot van de Bor, Djien Liem, Sandra van Os, John Klaessens

Publikováno v: Experimental Brain Research, 151, 1, pp. 54-9
Experimental Brain Research, 151, 54-9

Item does not contain fulltext Adequate cerebral perfusion is necessary to preserve cerebral O(2) supply in order to maintain brain cell function. Our aim was to assess the influence of gestational age on the response of cerebral hemodynamics to hypo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d6452913fb3ca8dea83f765aa1e58e37
https://hdl.handle.net/2066/143710

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Changes in cerebral oxygenation and hemodynamics during cranial ultrasound in preterm infants

Autor: John Klaessens, Vivian P.J. Claessen, Adriana A.E.M. van Alfen-van der Velden, Rob C.A. Sengers, Jeroen C.W. Hopman, Kian D. Liem

Publikováno v: Brain & Development, 31, 427-34
Brain & Development, 31, 6, pp. 427-34

Contains fulltext : 80099.pdf (Publisher’s version ) (Closed access) OBJECTIVES: To evaluate whether application of a transducer on the anterior fontanelle during cranial ultrasound (US) examination effects cerebral hemodynamics and oxygenation in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d96343bab6dce05faa409c865fee6c10
https://pubmed.ncbi.nlm.nih.gov/18838237

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Cerebral hemodynamics and oxygenation after serial CSF drainage in infants with PHVD

Autor: Jeroen C.W. Hopman, Kian D. Liem, John Klaessens, Adriana A.E.M. van Alfen-van der Velden, Ton Feuth, Rob C.A. Sengers

Publikováno v: Brain & Development, 29, 10, pp. 623-9
Brain & Development, 29, 623-9

Contains fulltext : 53100.pdf (Publisher’s version ) (Closed access) The aim of our study was to assess consecutive changes in cerebral oxygenation and hemodynamics after serial cerebrospinal fluid (CSF) drainage from a subcutaneous ventricular cat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78a27431ec7f9510046cc76d1d3be467
https://pubmed.ncbi.nlm.nih.gov/17533121

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Effects of rapid versus slow infusion of sodium bicarbonate on cerebral hemodynamics and oxygenation in preterm infants

Autor: A.A.E.M. van Alfen-van der Velden, Rob C.A. Sengers, Jeroen C.W. Hopman, John Klaessens, Ton Feuth, Kian D. Liem

Publikováno v: Biology of the Neonate, 90, 122-7
Biology of the Neonate, 90, 2, pp. 122-7

Background: Sodium bicarbonate (NaHCO3) is often used for correction of metabolic acidosis in preterm infants. The effects of NaHCO3 administration on cerebral hemodynamics and oxygenation are not well known. Furthermore, there is no consensus on inf

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6bf4ab2f664809fff9e1800761690e5d
http://hdl.handle.net/2066/50255

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Effects of skin on bias and reproducibility of near-infrared spectroscopy measurement of cerebral oxygenation changes in porcine brain

Autor: Johan M. Thijssen, Sandra van Os, Jeroen C.W. Hopman, K. Djien Liem, John Klaessens

Publikováno v: Journal of biomedical optics. 10(4)

The influence of skin on the bias and reproducibility of regional cerebral oxygenation measurements is investigated using cw near-infrared spectroscopy (NIRS). Receiving optodes are placed over the left and right hemispheres of a piglet (C3, C4 EEG p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed83719d74e8f13a45f25a6a5477ae55
https://pubmed.ncbi.nlm.nih.gov/16178637

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Effects of midazolam and morphine on cerebral oxygenation and hemodynamics in ventilated premature infants

Autor: Ton Feuth, Kian D. Liem, John Klaessens, A.A.E.M. van Alfen-van der Velden, Rob C.A. Sengers, Jeroen C.W. Hopman

Publikováno v: Biology of the Neonate, 90, 197-202
Biology of the Neonate, 90, 3, pp. 197-202

Background: Midazolam sedation and morphine analgesia are commonly used in ventilated premature infants. Objectives: To evaluate the effects of midazolam versus morphine infusion on cerebral oxygenation and hemodynamics in ventilated premature infant

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3dddc75e4786878aa5857c2e82a0874d
https://pubmed.ncbi.nlm.nih.gov/16717443

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Cortical excitatory amino acid release and cell function during hypotension in near-term born lambs

Autor: John Klaessens, Jeroen C.W. Hopman, Sandra van Os, Margot van de Bor, Wim Ruitenbeek

Publikováno v: Biology of the Neonate, 90, 128-34
Biology of the Neonate, 90, 2, pp. 128-34

Background: Energy failure due to insufficient cerebral O2-supply leads to excess accumulation of calcium ions in presynaptic neurons, followed by excess release of excitatory amino acids, which are potent neurotoxins, into the synaptic cleft. Aim:To

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20ace8ff95cb3e3315818a913d882096
https://pubmed.ncbi.nlm.nih.gov/16582537

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Assessment of local changes of cerebral perfusion and blood concentration by near infrared spectroscopy and ultrasound contrast densitometry

Autor: Martin C. van Wijk, Johan M. Thijssen, John Klaessens, Jeroen C.W. Hopman, K. Djien Liem

Publikováno v: Brain & Development, 27, 6, pp. 406-14
Brain & Development, 27, 406-14

Contains fulltext : 48350thijssen.pdf (Publisher’s version ) (Closed access) The objective of this study is to correlate regional cerebral blood concentration measurements made with near infrared spectroscopy to simultaneous local measurements of u

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::636e6949a648ba35cdf73f1d08fab336
https://hdl.handle.net/2066/48350

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