Marek Mandera

Prof. Dr. Marek Mandera

Department of Pediatric Neurosurgery, Medical University of Silesia, Ul. Medyków 16, 40-752 Katowice, Poland
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Research Focus & Metrics

Academic Career Length

28Years (1999-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 April 2010 in Pediatrics
Verified
Journal Article
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AWAndrew Whitelaw
Andrew Whitelaw
SJSally Jary
Sally Jary
GKGrazyna Kmita
Grazyna Kmita
JWJolanta Wroblewska
Jolanta Wroblewska
EMEwa Musialik-Swietlinska
Ewa Musialik-Swietlinska
IPIan Pople
Ian Pople
Background: Preterm infants who develop posthemorrhagic ventricular dilatation (PHVD) have a high risk of cognitive and motor disability. No clinical intervention has been proven to reduce neurodevelopmental disability in such infants. We investigated whether drainage, irrigation, and fibrinolytic therapy (DRIFT), which aims to lower pressure, distortion, free iron, and cytokines, reduces death or severe disability in PHVD. Methods: We randomly assigned 77 preterm infants with PHVD to either DRIFT or standard treatment (ie tapping off cerebrospinal fluid to control excessive expansion). Severe disability was assessed at 2 years' corrected age and included severe sensorimotor disability and cognitive disability (<55 on the Bayley Mental Development Index). Results: Of 39 infants assigned to DRIFT, 21 (54%) died or were severely disabled versus 27 of 38 (71%) in the standard group (adjusted odds ratio 0.25 [95% confidence interval: 0.08–0.82]). Among the survivors, 11 of 35 (31%) in the DRIFT group had severe cognitive disability versus 19 of 32 (59%) in the standard group (adjusted odds ratio: 0.17 [95% confidence interval: 0.05–0.57]). Median Mental Development Index was 68 with DRIFT and <50 with standard care. Severe sensorimotor disability was not significantly reduced. Conclusions: Despite an increase in secondary intraventricular bleeding, DRIFT reduced severe cognitive disability in survivors and overall death or severe disability.

1 May 2007 in Pediatrics
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Journal Article
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AWAndrew Whitelaw
Andrew Whitelaw
DEDavid Evans
David Evans
MCMichael Carter
Michael Carter
MTMarianne Thoresen
Marianne Thoresen
JWJolanta Wroblewska
Jolanta Wroblewska
IPIan Pople
Ian Pople
OBJECTIVE. Hydrocephalus is a serious complication of intraventricular hemorrhage in preterm infants, with adverse consequences from permanent ventriculoperitoneal shunt dependence. The development of hydrocephalus takes several weeks, but no clinical intervention has been shown to reduce shunt surgery in such infants. The aim of this study was to test a new treatment intended to prevent hydrocephalus and shunt dependence after intraventricular hemorrhage. METHODS. We randomly assigned 70 preterm infants who had gestational ages of 24 to 34 weeks and were progressively enlarging their cerebral ventricles after intraventricular hemorrhage to either (1) drainage, irrigation, and fibrinolytic therapy to wash out blood and cytokines or (2) tapping of cerebrospinal fluid by reservoir as required to control excessive expansion and signs of pressure (standard treatment). We evaluated outcomes at 6 months of age or hospital discharge (if later). RESULTS. Of 34 infants who were assigned to drainage, irrigation, and fibrinolytic therapy, 2 died and 13 underwent shunt surgery (dead or shunt: 44%). Of 36 infants who were assigned to standard therapy, 5 died and 14 underwent shunt surgery (dead or shunt: 50%). This difference was not significant. Twelve (35%) of 34 infants who received drainage, irrigation, and fibrinolytic therapy had secondary intraventricular hemorrhage compared with 3 (8%) of 36 in the standard group. Secondary intraventricular hemorrhage was associated with an increased risk for subsequent shunt surgery and more blood transfusions. CONCLUSIONS. Despite its logical basis and encouraging pilot data, drainage, irrigation, and fibrinolytic therapy did not reduce shunt surgery or death when tested in a multicenter, randomized trial. Secondary intraventricular hemorrhage is a major factor that counteracts any possible therapeutic effect from washing out old blood.

1 January 2006 in Neurologia medico-chirurgica
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JLJoanna Lewin-Kowalik
Joanna Lewin-Kowalik
WMWieslaw Marcol
Wieslaw Marcol
KKKatarzyna Kotulska-Jóźwiak
Katarzyna Kotulska-Jóźwiak
Marek ManderaMarek Mandera
Marek Mandera
AKAndrzej Klimczak
Andrzej Klimczak
Painful neuroma is a common sequela of peripheral nerve injury which is usually resistant to pharmacologic treatment and requires surgical intervention. The widely accepted methods of neuroma management prevent regrowth of nerve fibers, thus precluding any functional repair. The present study reviews the currently used methods and experimental approaches to prevent and cure neuromas developing after peripheral nerve injury. The main recommendations are as follows. Special care should be taken to minimize scar formation when operating on peripheral nerves. The laser or scissors transection methods should be used to cut the nerve rather than electrocoagulation or cryoneurolysis. Direct nerve reconstruction, or, if a gap occurs, nerve grafting, should be performed immediately after nerve injury. Surgical resection of recurrent neuroma followed by implantation of the nerve into the muscle or capping the nerve stump with epineural graft seems to be the most effective method of prevention.

1 November 2003 in Child's Nervous System
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Journal Article
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Marek ManderaMarek Mandera
Marek Mandera
WMWieslaw Marcol
Wieslaw Marcol
GBGrazyna Bierzynska-Macyszyn
Grazyna Bierzynska-Macyszyn
EKEwa Kluczewska
Ewa Kluczewska

1 April 2014 in Pediatric Neurology
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Journal Article
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KKKatarzyna Kotulska-Jóźwiak
Katarzyna Kotulska-Jóźwiak
JBJulita Borkowska
Julita Borkowska
MRMarcin Roszkowski
Marcin Roszkowski
Marek ManderaMarek Mandera
Marek Mandera
PDPaweł Daszkiewicz
Paweł Daszkiewicz
Sergiusz JóźwiakSergiusz Jóźwiak
Sergiusz Jóźwiak

4 February 2014 in The Scientific World Journal
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WLWirginia Likus
Wirginia Likus
GBGrzegorz Bajor
Grzegorz Bajor
KGKatrzyna Gruszczyńska
Katrzyna Gruszczyńska
JBJan Baron
Jan Baron
JMJarosław Markowski
Jarosław Markowski
TLTomasz Lepich
Tomasz Lepich
Cephalic index is a highly useful method for planning surgical procedures, as well as assessing their effectiveness in correcting cranial deformations in children. There are relatively very few studies measuring cephalic index in healthy Caucasian young children. The aim of our study was to develop a classification of current cephalic index for healthy Caucasian children up to 3 years of age with normal brain development, using axial slice computer tomography performed with very thin slices (0.5 mm) resulting in more accurate measurements. 180 healthy infants (83 females and 97 males) were divided into 5 age categories: 0–3, 4–6, 7–12, 13–24, and 25–36 months. The average value of cephalic index in children up to 3 years of age amounted to 81.45 ± 7.06. The index value in case of children under 3 months was 80.19, 4 to 6 months was 81.45, 7 to 12 months was 83.15, in children under 2 years was 81.05, and in children under 3 years was 79.76. Mesocephaly is the dominating skull shape in children. In this study, we formulated a classification of current cephalic indices of children with normal brain development. Our date appears to be of utmost importance in anthropology, anatomy forensic medicine, and genetics.