[German-speaking midwifes prefer vaginal mode of delivery to elective Caesarean]. / Hebammen präferieren vaginale Geburt statt Wunschsektio1.

Increasing ceasarean section rates are a world wide concern in obstetrics. One of the latest contributing factors is the elective caesarean section in uncomplicated singleton pregnancy at term. The preference for this mode of delivery was primarily brought forward by obstetric practitioners (Al Mufty, McCarthy, Fisk 1996). A questionnaire, which mainly aimed to ask germanspeaking midwifes in Austria, Germany and Switzerland about their personal choice of delivery mode, was included in one of the issues of the German-language midwifery journal "Die Hebamme". This questionnaire contained 5 half-closed/half open questions describing specific obstetric occurrences. The midwifes were asked to express their preferred mode of delivery and describe their reason for choosing. 446 questionnaires (12 %) were returned. The majority (100 %) of the german speaking midwifes preferred a normal vaginal delivery in an uncomplicated singleton pregnancy at term with a child in cephalic presentation. The rating was about the same (97 %) in the presence of general risk factors which don't indicate a primary caesarean section. Breech presentation and macrosomia are a matter of concern to the midwifes. Midwifes arguing for a first child in breech presentation or with macrosomia > 4.5 kg vote highly significantly more frequently for elective caesarean section than midwifes arguing for at least the second child. The first-rate reasons for the preference of vaginal delivery concern the natural and physiological way of delivery, the personal experience of delivery, the higher risks of caesarean section and the possibility of a later caesarean section in case of fetal distress during first or second stage of labour. Concerns are expressed about the maintenance of competence amongst practitioners, thus influencing the choice of mode of delivery in obstetrics.

Diurnal variation in concentrations of various markers of bone metabolism in dogs.

OBJECTIVE: To evaluate diurnal variation in concentrations of selected markers of bone metabolism in dogs. ANIMALS: Ten 3- to 4-year-old ovariectomized Beagles. PROCEDURE: Blood and urine samples were obtained in the morning before dogs were fed (8 AM) and then at 2-hour intervals for 24 hours. This procedure was repeated 2 weeks later. Concentrations of osteocalcin (OC) and carboxy terminal telopeptide of type-I collagen (ICTP) were measured in serum, using a radioimmunoassay; concentrations of hydroxyproline (HYP), pyridinoline (PYD), and deoxypyridinoline (DPD) were analyzed in urine. Hydroxyproline concentration was measured by means of a colorimetric test, whereas PYD and DPD concentrations were quantified by use of high-performance liquid chromatography. RESULTS: In both parts of the study, HYP concentrations increased significantly, compared with values before feeding, until 8 hours after feeding; HYP concentrations then returned to prefeeding values. Concentrations of DPD and PYD decreased from before feeding until 2 PM and then increased until 8 PM. The ICTP concentrations slowly decreased until 4 PM but returned to prefeeding values thereafter. In both parts of the study, concentrations of OC decreased during the day and then increased to reach values similar to those obtained before feeding. CONCLUSIONS: Changes in the concentrations of bone markers were detected throughout the day in the dogs of this study. Increase in HYP concentration most likely was related to feeding. As documented for bone resorption and formation in other species, circadian rhythms were evident for concentrations of DPD, PYD, and OC. Investigators should consider the time of sample collection when measuring these markers.

Performing cost-effectiveness analysis by integrating randomized trial data with a comprehensive decision model: application to treatment of acute ischemic stroke.

A recent national panel on cost-effectiveness in health and medicine has recommended that cost-effectiveness analysis (CEA) of randomized controlled trials (RCTs) should reflect the effect of treatments on long-term outcomes. Because the follow-up period of RCTs tends to be relatively short, long-term implications of treatments must be assessed using other sources. We used a comprehensive simulation model of the natural history of stroke to estimate long-term outcomes after a hypothetical RCT of an acute stroke treatment. The RCT generates estimates of short-term quality-adjusted survival and cost and also the pattern of disability at the conclusion of follow-up. The simulation model incorporates the effect of disability on long-term outcomes, thus supporting a comprehensive CEA. Treatments that produce relatively modest improvements in the pattern of outcomes after ischemic stroke are likely to be cost-effective. This conclusion was robust to modifying the assumptions underlying the analysis. More effective treatments in the acute phase immediately following stroke would generate significant public health benefits, even if these treatments have a high price and result in relatively small reductions in disability. Simulation-based modeling can provide the critical link between a treatment's short-term effects and its long-term implications and can thus support comprehensive CEA.