Henk C. S. Wallenburg

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OBJECTIVE To estimate benefits and risks of transabdominal cervicoisthmic cerclage in women with cervical insufficiency in whom transvaginal cerclage is considered surgically unfeasible. METHODS This was an observational cohort study with historical controls of 101 pregnancies after transabdominal cervicoisthmic cerclage in 101 women with a classic(More)
This study was to determine whether pregnancy affects maximal aerobic power. We measured heart rate, O2 uptake (VO2), CO2 production (VCO2), and ventilation at rest and during bicycle (BE) and treadmill exercise (TE) tests with rapidly increasing exercise intensities at 16, 25, and 35 wk gestation and 7 wk after delivery. Maximal heart rate was slightly(More)
BACKGROUND The study was carried out to assess the course and outcome of pregnancies in women with the Ehlers-Danlos syndrome, with the aim of developing guidelines for assessment of risk and counseling, and for providing optimum medical and obstetric care. METHODS A retrospective study based on data collected from members of the Dutch Association of(More)
Leiomyomatosis peritonealis disseminata is a rare condition characterized by the presence of multiple intraabdominal nodules that consist of benign smooth muscle. We found 42 documented cases in the literature. Malignant degeneration appears to be extremely rare. We describe the second case with proved malignancy.
OBJECTIVE To assess the role of anal sphincter damage following delivery in the development of anorectal complaints and urinary incontinence, and to identify obstetric factors associated with subsequent fecal incontinence. METHODS The retrospective cohort study with matched controls used a postal questionnaire and analysis of delivery and operation(More)
Reported central hemodynamics obtained with a Swan-Ganz pulmonary artery thermodilution catheter in preeclamptic patients show marked disparity, which has been interpreted to indicate a variable hemodynamic expression of the disease. However, the variability also may be due, at least in part, to the pharmacological treatment that most of the women studied(More)
OBJECTIVE To compare the incidence and severity of pregnancy-induced hypertensive disorders in twin pregnancy and in singleton gestation. STUDY DESIGN Case-control study in the setting of a University Hospital. Each pregnancy of a consecutive series of 187 twin pregnancies attending the antenatal clinic and booked before a gestational age of 24 weeks was(More)
This study was designed to determine whether pregnancy affects peak O2 uptake (VO2peak) during swimming compared with cycling. We studied 11 women at 30-34 wk gestation and 8-12 wk postpartum. We measured heart rate (HR), O2 uptake (VO2), CO2 output (VCO2), minute ventilation (VE), and lactic acid concentration. Peak HR was not significantly affected by the(More)
This study was designed to determine whether endurance cycling responses in pregnancy differ from those postpartum. We studied 16 women longitudinally at approximately 32 wk pregnancy and approximately 10 wk postpartum. We measured heart rate (HR), O2 uptake (VO2), CO2 output (VCO2), minute ventilation VE and plasma concentrations of substrates and of(More)
OBJECTIVE To test the null hypothesis that the course and outcome of pregnancy in patients with severe pre-eclampsia receiving temporising haemodynamic treatment does not depend on the presence or absence of the syndrome of haemolysis, elevated liver enzymes, and a low platelet count (HELLP). DESIGN A case-controlled study. SETTING High risk obstetric(More)