Hans Wolf

Dr. Hans Wolf


Research Focus & Metrics

Academic Career Length

40Years (1987-Present)

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

Representative Publications

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23 September 2013 in Ultrasound in Obstetrics & Gynecology
Verified
Journal Article
Open access
PDF file
CLChristoph Lees
Christoph Lees
NMN. Marlow
N. Marlow
BAB. Arabin
B. Arabin
CBC. M. Bilardo
C. M. Bilardo
CBC. Brezinka
C. Brezinka
TGthe TRUFFLE Group
the TRUFFLE Group
Objectives: Few data exist for counseling and perinatal management of women after an antenatal diagnosis of early‐onset fetal growth restriction. Yet, the consequences of preterm delivery and its attendant morbidity for both mother and baby are far reaching. The objective of this study was to describe perinatal morbidity and mortality following early‐onset fetal growth restriction based on time of antenatal diagnosis and delivery.Methods: We report cohort outcomes for a prospective multicenter randomized management study of fetal growth restriction (Trial of Randomized Umbilical and Fetal Flow in Europe (TRUFFLE)) performed in 20 European perinatal centers between 2005 and 2010. Women with a singleton fetus at 26–32 weeks of gestation, with abdominal circumference < 10th percentile and umbilical artery Doppler pulsatility index > 95th percentile, were recruited. The main outcome measure was a composite of fetal or neonatal death or severe morbidity: survival to discharge with severe brain injury, bronchopulmonary dysplasia, proven neonatal sepsis or necrotizing enterocolitis.Results: Five‐hundred and three of 542 eligible women formed the study group. Mean ± SD gestational age at diagnosis was 29 ± 1.6 weeks and mean ± SD estimated fetal weight was 881 ± 217 g; 12 (2.4%) babies died in utero. Gestational age at delivery was 30.7 ± 2.3 weeks, and birth weight was 1013 ± 321 g. Overall, 81% of deliveries were indicated by fetal condition and 97% were by Cesarean section. Of 491 liveborn babies, outcomes were available for 490 amongst whom there were 27 (5.5%) deaths and 118 (24%) babies suffered severe morbidity. These babies were smaller at birth (867 ± 251 g) and born earlier (29.6 ± 2.0 weeks). Death and severe morbidity were significantly related to gestational age, both at study entry and delivery and also with the presence of maternal hypertensive morbidity. The median time to delivery was 13 days for women without hypertension, 8 days for those with gestational hypertension, 4 days for pre‐eclampsia and 3 days for HELLP syndrome.Conclusions: Fetal outcome in this study was better than expected from contemporary reports: perinatal death was uncommon (8%) and 70% survived without severe neonatal morbidity. The intervals to delivery, death and severe morbidity were related to the presence and severity of maternal hypertensive conditions. Copyright © 2013 ISUOG. Published by John Wiley & Sons Ltd.

1 May 2015 in The Lancet
Verified
Journal Article
Closed access
CLChristoph Lees
Christoph Lees
NMNeil Marlow
Neil Marlow
AWAleid van Wassenaer-Leemhuis
Aleid van Wassenaer-Leemhuis
BABirgit Arabin
Birgit Arabin
CBCaterina M Bilardo
Caterina M Bilardo
HWHans Wolf
Hans Wolf

1 February 2007 in Obstetrics & Gynecology
Verified
Journal Article
Closed access
ABAhmet Alexander Baschat
Ahmet Alexander Baschat
ECErich Cosmi
Erich Cosmi
CBCatarina M. Bilardo
Catarina M. Bilardo
HWHans Wolf
Hans Wolf
CBChristoph Berg
Christoph Berg
CHChris R. Harman
Chris R. Harman
OBJECTIVE: To identify specific estimates and predictors of neonatal morbidity and mortality in early onset fetal growth restriction due to placental dysfunction. METHODS: Prospective multicenter study of prenataly diagnosed growth-restricted liveborn neonates of less than 33 weeks of gestational age. Relationships between perinatal variables (arterial and venous Dopplers, gestational age, birth weight, acid-base status, and Apgar scores) and major neonatal complications, neonatal death, and intact survival were analyzed by logistic regression. Predictive cutoffs were determined by receiver operating characteristic curves. RESULTS: Major morbidity occurred in 35.9% of 604 neonates: bronchopulmonary dysplasia in 23.2% (n=140), intraventricular hemorrhage in 15.2% (n=92), and necrotizing enterocolitis in 12.4% (n=75). Total mortality was 21.5 % (n=130), and 58.3% survived without complication (n=352). From 24 to 32 weeks, major morbidity declined (56.6% to 10.5%), coinciding with survival that exceeded 50% after 26 weeks. Gestational age was the most significant determinant (P<.005) of total survival until 266/7 weeks (r2=0.27), and intact survival until 292/7 weeks (r2=0.42). Beyond these gestational-age cutoffs, and above birth weight of 600 g, ductus venosus Doppler and cord artery pH predicted neonatal mortality (P<.001, r2=0.38), and ductus venosus Doppler alone predicted intact survival (P<.001, r2=0.34). CONCLUSION: This study provides neonatal outcomes specific for early-onset placenta-based fetal growth restriction quantifying the impact of gestational age, birth weight, and fetal cardiovascular parameters. Early gestational age and birth weight are the primary quantifying parameters. Beyond these thresholds, ductus venosus Doppler parameters emerge as the primary cardiovascular factor in predicting neonatal outcome. LEVEL OF EVIDENCE: II

2 February 2004 in Ultrasound in Obstetrics & Gynecology
Verified
Journal Article
Closed access
PDF file
CBC. M. Bilardo
C. M. Bilardo
HWHans Wolf
Hans Wolf
RSR. H. Stigter
R. H. Stigter
YVY. Ville
Y. Ville
EBE. Baez
E. Baez
KHK. Hecher
K. Hecher

1 May 1999 in American Journal of Obstetrics and Gynecology
Verified
Journal Article
Closed access
MPMaria G. van Pampus
Maria G. van Pampus
GDGustaf A. Dekker
Gustaf A. Dekker
HWHans Wolf
Hans Wolf
PHPeter C. Huijgens
Peter C. Huijgens
MKMaria M.W. Koopman
Maria M.W. Koopman
HBHarry R. Büller
Harry R. Büller

1 October 2000 in Clinical Rehabilitation
Verified
Journal Article
Closed access
AHA F Hoeksma
A F Hoeksma
HWHans Wolf
Hans Wolf
SOS L Oei
S L Oei
The incidence of obstetric brachial plexus injury (OBPI) was investigated and the natural course of this disorder and the frequency of shoulder contracture described. Between 1988 and 1997 13 366 children with a gestational age of 30 weeks or more, were born at the Academic Medical Center, Amsterdam. Of these, 62 had an OBPI (4.6 per 1000). Complete neurological recovery occurred in 72.6% of cases. Half of them had a delayed recovery of more than three weeks (mean recovery time 6.2 ± 3.1 months). Shoulder contracture occurred in at least one-third of the children with delayed recovery and in at least two-thirds of the children with incomplete recovery. The incidence of OBPI in our hospital was found to be higher and to have a less favourable natural course than is usually reported in the literature. Contracture of the shoulder joint is frequently found even in infants with complete neurological recovery.