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131.
Kreuer S Bruhn J Ellerkmann R Ziegeler S Kubulus D Wilhelm W 《Journal of clinical monitoring and computing》2008,22(2):149-158
Objective We compared two PK/PD models, one with and one without a plateau effect. Bispectral (BIS, Aspect Medical Systems, Natick,
MA, version XP) and Narcotrend™ (NCT, MonitorTechnik, Bad Bramstedt, Germany, Version 4.0) indices were used as an electroencephalographic
measure of desflurane drug effect.
Methods With IRB approval and informed consent we investigated 20 adult patients scheduled for radical prostatectomy. At least 45 minutes
after induction of general anaesthesia, end-tidal concentrations of desflurane was varied between 3 and 10 vol%. To evaluate
the relationship between concentrations and EEG indices, two different pharmacodynamic models were applied: A conventional
model based on a single sigmoidal curve, and a novel model based on two sigmoidal curves for BIS and NCT values with and without
burst suppression. The parameters of the models␣were estimated by NONMEM V (GloboMax, Hanover, USA) by minimizing log likelihood.
Statistical significance between the two models was calculated by the likelihood ratio test.
Results The maximum end-tidal desflurane concentration during the two concentrations ramps was 10.0 ± 1.4 vol%. The mean BIS and NCT
values decreased significantly but slightly with increasing end-tidal desflurane concentrations between 4 and 8 vol%. Therefore
a two sigmoidal curves PK/PD model including a plateau describes the effects of desflurane on BIS and Narcotrend better than
a single sigmoidal curve model. The difference between the log likelihood values of the new PK/PD model with two connected
sigmoidal curves and the classical E
max model with one sigmoidal curve is 634 (P < 0.001) for the BIS monitor and 4089 (P < 0.001) for the NCT.
Conclusions BIS and Narcotrend are not useful to differentiate pharmacodynamic changes in the EEG between 4 and 9 vol% desflurane.
This study was presented in part at the American Society of Anesthesiologists meeting October 20, 2005 Atlanta.
Kreuer S, Bruhn J, Ellerkmann R, Ziegeler S, Kubulus D, Wilhelm W. Failure of two commercial indexes and spectral parameters
to reflect the pharmacodynamic effect of desflurane on EEG. 相似文献
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Henoch-Schonlein purpura is a vasculitis affecting small arterial vessels. Occasionally, cases are referred for a general surgical opinion due to bowel involvement in the form of abdominal pain with or without rectal bleeding. However, surgical intervention is rarely required. We describe a case of Henoch-Schonlein purpura in a young man who went on to develop ischaemic bowel requiring resection. 相似文献
134.
Riediger S Behrends A Croll B Vega-Naredo I Hänig N Poeggeler B Böker J Grube S Gipp J Coto-Montes A Haldar C Hardeland R 《Environmental toxicology》2007,22(1):33-43
The quinalphos metabolite 2-hydroxyquinoxaline (HQO), previously shown to photocatalytically destroy antioxidant vitamins and biogenic amines in vitro, was tested for toxicity in several small aquatic organisms and for mutagenicity in Salmonella typhimurium. In the rotifer Philodina acuticornis, HQO caused the disappearance of large individuals and increased hydroperoxide concentration. The latter effect was not only observed in animals kept in a light/dark cycle, but also in constant darkness, indicating that HQO can assume a reactive state and/or form reactive intermediates under the influence of either light or redox-active metabolites, in particular, free radicals. Cell proliferation was inhibited in the ciliate Paramecium bursaria. In the dinoflagellate Lingulodinium polyedrum, which allows early detection of cellular stress on the basis of bioluminescence measurements, strong rises in light emission became apparent on the 2nd day of exposure to HQO and continued until cells died between 12 and 18 days of treatment. Oxidative damage of protein by HQO was demonstrated by measuring protein carbonyl in L. polyedrumin vivo as well as in light-exposed bovine serum albumin in vitro. In an Ames test of mutagenicity, HQO proved to be genotoxic in both light- and dark-exposed bacteria. HQO appears as a source of secondary quinalphos toxicity, which deserves further attention. 相似文献
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The recognition of psoriasis as a systemic disorder with characteristic skin symptoms and associated diseases has changed treatment concepts substantially. The complexity of psoriasis disease not only requires appropriate therapy but also weight‐loss and smoking cessation programmes as well as trigger factor elimination. The term ‘management’ may better reflect the aim for a holistic approach of disease control. Comorbidity and the presence of psoriatic arthritis are important denominators for drug selection. However, there is a lack of prospective data substantiating a benefit of associated diseases by antipsoriatic therapy. Securing success using treatment goals helps to establish an efficacious therapy and to control inflammation. A regular scoring of disease severity, patients’ quality of life and assessment of other clinically relevant conditions are mandatory to closely follow the disease course. There is debate whether an early treatment may modulate the future course of psoriasis. Concepts of minimal disease activity have not been implemented in psoriasis yet. There is a lack of evidence how long any treatment should be given and when and how to terminate. Finally, outcome tools should specifically be tailored for psoriasis to evaluate disease‐related items as well as the benefit of management from the patient's perspective. 相似文献
137.
Sascha James-Conterelli DNP CNM FACNM FAAN Holly Powell Kennedy PhD CNM FACNM FAAN 《分娩》2023,50(2):258-266
Background
It has been 4 years since the release of the study Labor Induction versus Expectant Management in Low-Risk Nulliparous Women, also known as the ARRIVE trial. As researchers and speakers who frequently present to the United States and international audiences about models of care and strategies to support normal physiologic labor and birth, we have had ample opportunity to engage with practitioners who consistently ask about our perspectives on the ARRIVE trial's findings and methods. Many note the marked increase in pressure they feel to induce at 39 weeks since the study's publication in 2018.Methods
In this commentary, we discuss some of the concerns that have been brought up during these conversations.Results/Conclusion
We focus on the trial's key findings and reflect on factors critical to consider as translation into clinical practice is negotiated. 相似文献138.
Weichert Veronika Rosga Christina Nohl André Zeiger Sascha Ohmann Tobias Ben-Abdallah Heithem Steinhausen Eva Simone Dudda Marcel 《Notfall & Rettungsmedizin》2023,26(4):284-291
Notfall + Rettungsmedizin - Sowohl innerklinisch als auch präklinisch kam es durch das SARS-CoV-2-Virus zu Veränderungen in der Patientenversorgung. Durch das Herunterfahren des... 相似文献
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Der Freie Zahnarzt - 相似文献