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At least 937 records · Page 52Linked to original sources
PubMed1988

[A new mobile respiration and monitoring system for transporting critically ill patients].

This article introduces a compact versatile system that can be used when transporting high-risk patients. The equipment can be coupled to a standard hospital bed. An instrument carrier device mounted on rollers which is independent of the medical equipment manufacturer can take up every kind of storage-battery driven apparatus required for monitoring, infusion therapy and continuous drug supply, as well as an artificial respiration unit with sufficient O2 for more than 20 hours of artificial respiration. The entire setup occupies a minimum of space.

Beds↗
PubMedDate not supplied

[A microprocessor monitoring system for control of the status of the fetus].

To estimate the fetus condition according to its cardiotocogram it is very important to improve the accuracy of measurements of its parameters and objectifications of the estimate criteria. The described microprocessor system helps to meet these requirements. The described microprocessor system allows to measure immediate fetus contractions with the help of the autocorrelation method and automatic measurements of the cardiotocogram parameters.

Cardiotocography↗
PubMedDate not supplied

Pre-clinical assessment of the performance of the Glucostix and Glucometer II blood glucose monitoring system.

The Glucostix/Glucometer II blood glucose system has been evaluated in a hospital laboratory, with the purpose of assessing the suitability for use by nurses and diabetic patients. In the hands of laboratory personnel, the strips and meter gave precise results which correlated well with the laboratory plasma glucose assay, taking into account the difference between plasma and whole blood. The system was simple to use and rapid (50 seconds), and should prove useful and acceptable in the hands of non-laboratory personnel.

Blood Glucose↗
PubMed2005

Domain formation in DODAB-cholesterol mixed systems monitored via Nile Red anisotropy.

The effect of the cholesterol (Ch) on liposomes composed of the cationic lipid dioctadecyldimethylammonium bromide (DODAB) was assessed by studying both the steady-state and time-resolved fluorescence anisotropy of the dye Nile Red. The information obtained combined with analysis of the steady-state emission and fluorescence lifetime of Nile Red (NR) for different cholesterol concentrations (5-50%) elucidated the presence of "condensed complexes" and cholesterol-rich domains in these mixed systems. The steady-state fluorescence spectra were decomposed into the sum of two lognormal emissions, emanating from two different states, and the effect of temperature on the anisotropy decay of Nile Red for different cholesterol concentrations was observed. At room temperature, the time-resolved anisotropy decays are indicative of NR being relatively immobile (manifest by a high r (infinity) value). At higher temperature, rotational times ca. 1 ns were obtained throughout and a trend in increasing hindrance was seen with increase of Ch content.

Anisotropy↗
PubMed2004

Differential effects of norepinephrine on brain and other less vital organs detected by a multisite multiparametric monitoring system.

BACKGROUND: Under emergency situations, the protection of the most vital organs in the body, the brain and the heart, may result in a decrease in tissue perfusion, mitochondrial dysfunction and energetic failure, in "less-vital" organs (skin, G-I tract, kidney etc.). One of these pathways includes the secretion of epinephrine and norepinephrine. The aim of the present study was to test the effect of norepinephrine injection on the vitality of four different organs (vital and "less-vital") monitored simultaneously. MATERIAL/METHODS: The four organs monitored were, the brain- a vital organ and three "less vital" organs-the kidney, liver and testis. The vitality of the organs was evaluated by monitoring the levels of microcirculatory tissue blood flow (TBF) and the level of mitochondrial NADH measured from the surface of each organ. The hemodynamic state, TBF, was monitored by the laser Doppler flowmetry (LDF) and the metabolic state was evaluated by surface fluorometry-reflectometry. RESULTS: The results indicated that following norepinephrine bolus injection the increase in mean arterial pressure (MAP) was associated with an increase in cerebral blood flow and a decrease in all three "less vital" organs TBF. As a result, NADH levels in the brain remained stable whereas in all other organs NADH increased due to the hypoperfusion developed and the lack of enough oxygen in these organs. CONCLUSIONS: The significant correlation between the hemodynamic state of the organs and its mitochondrial redox state may serve as an indicator of tissue vitality under "Brain Sparing" conditions.

Animals↗
PubMed2006

A predictive tool for the self-management of diabetes (Librae): evaluation using a continuous glucose monitoring system.

AIMS: Diabetes self-management involves a difficult balancing act between insulin, food and exercise. The challenge is to develop innovative, validated algorithms to aid patient decision-making and optimize glycaemic control. 'Librae' is a computerized diabetes simulator in diary format, developed as an educational predictive tool for patients, reducing 'trial and error' by allowing patients to simulate and experiment with dietary or insulin adjustments on a 'body double'. We have evaluated the predictive ability of Librae using continuous blood glucose monitoring (CGMS). METHODS: Patients with Type 1 Diabetes attending the Paediatric Clinic were invited to use 'Librae' for 1 week and were then fitted with a CGMS for 72 h. The predictive ability of 'Librae' was compared with concurrent data obtained from the CGMS. RESULTS: Seven thousand nine hundred and sixty paired blood glucose values were obtained from the 11 patients who completed the study. 'Librae' underestimated the measured CGMS values, the error having a positive mean of 0.35 mmol/l (95% confidence interval 0.22-0.48 mmol/l). However, Librae tended to overestimate at low levels of blood glucose readings, and underestimate at high levels of blood glucose readings. CONCLUSION: The modelled values of 'Librae' correlated well with the CGMS data, but clinically unacceptable errors occurred at extremes of blood glucose levels. Concurrent CGMS recordings have provided a large data set to modify and improve the existing Librae model and patient feedback has led to improvements in its usability. Librae may provide a useful tool to improve diabetes self-management education and optimize glycaemic control.

Adolescent↗
PubMed1997

Predictive diagnostic value of clinical assessment and nonlaboratory monitoring system recordings in patients with symptoms suggestive of obstructive sleep apnea syndrome.

UNLABELLED: Obstructive sleep apnea syndrome (OSA) is of increasing importance because of its high prevalence and danger of morbidity to untreated patients. Diagnostic procedures need simplification. We evaluated the qualitative value of a stepwise diagnostic approach using clinical assessment and a home-based screening device according to current recommendations. METHODS: We investigated 114 patients with symptoms suggestive of obstructive sleep apnea syndrome by means of their clinical features, questionnaire responses, four-channel nonlaboratory monitoring (NLM) and full polysomnography. Operative indices in the diagnosis of OSA were calculated. RESULTS: A significant correlation (r = 0.7: p < 0.0001) was found between the oxygen desaturation index (ODI) and the respiratory disturbance index (RDI). The calculation of the difference between ODI by NLM and RDI by polysomnography showed a lack of agreement. Home-based monitoring revealed a high sensitivity (94%) but a low specificity (41%) in diagnosing OSA. However, a combination of clinical features, questionnaires and pulse oximetry achieved a specificity of 92%. CONCLUSION: Home-based monitoring provides reasonable negative predictive values in the diagnosis of OSA syndrome in symptomatic patients. It therefore qualifies as a screening method. Combined with clinical features and questionnaires it provides high positive predictive values and may therefore prove useful in simplifying diagnostic procedures.

Aged↗
PubMed2007

An online monitoring system based on a synthetic sigma32-dependent tandem promoter for visualization of insoluble proteins in the cytoplasm of Escherichia coli.

The expression of heterologous proteins in the cytoplasm of Escherichia coli is often accompanied by limitations resulting in uncontrollable fermentation processes, increased rates of cell lysis, and thus limited yields of target protein. To deal with these problems, reporter tools are required to improve the folding properties of recombinant protein. In this work, the well-known sigma(32)-dependent promoters ibpAB and fxsA were linked in a tandem promoter (ibpfxs), fused with the luciferase reporter gene lucA to allow enhanced monitoring of the formation of misfolded proteins and their aggregates in E. coli cells. Overexpression of MalE31, a folding-defective variant of the maltose-binding protein, and other partially insoluble heterologous proteins showed that the lucA reporter gene was activated in the presence of these misfolded proteins. Contrary to this, the absence of damaged proteins or overexpression of mostly soluble proteins led to a reduced level of luciferase induction. Through performing expression of aggregation-prone proteins, we were able to demonstrate that the ibpfxs::lucA reporter unit is 2.5-4.5 times stronger than the single reporter units ibp::lucA and fxs::lucA. Data of misfolding studies showed that this reporter system provides an adequate tool for in vivo folding studies in E. coli from microtiter up to fermentation scales.

Bioreactors↗
PubMed2003

A PCR-based marker system monitoring CMS-(S), CMS-(T) and (N)-cytoplasm in the onion ( Allium cepa L.).

The chimerical mitochondrial CMS(1)-specific sequence in chives ( Allium schoenoprasum) was used to develop a PCR-marker that distinguishes both male-sterility inducing cytoplasms, CMS-(S) and CMS-(T), from the normal cytoplasm in onion ( Allium cepa). In combination with a previously described marker for CMS-(S), which anchors in the upstream region of the mitochondrial gene cob, all of the three known cytoplasms in the onion are distinguishable. The PCR-marker system was tested in 361 onion plants, which were selected from F(1)-hybrids and different open-pollinated varieties. The latter are mainly landraces from Turkey, in which all three cytoplasm types were detected.

Breeding↗
PubMed1989

A simple anaesthetic and monitoring system for magnetic resonance imaging.

Clinical magnetic resonance imaging (MRI) is a digital tomographic technique which utilizes radio waves emitted by hydrogen protons in a powerful magnetic field to form an image of soft-tissue structures and abnormalities within the body. Unfortunately, because of the relatively long scanning time required and the narrow deep confines of the MRI tunnel and Faraday cage, some patients cannot be examined without the use of heavy sedation or general anaesthesia. Due to poor access to the patient and the strong magnetic field, several problems arise in monitoring and administering anaesthesia during this procedure. In this presentation these problems and their solutions, as resolved by our institution, are discussed. Of particular interest is the anaesthesia circuit specifically adapted for use during MRI scanning.

Anesthesiology↗
PubMed2003

A feasibility study for transportable 241Am-in-lung and 241Am-in-nose-blow monitoring systems for use following a weapons accident.

In a nuclear weapon accident involving fire or conventional explosion, most of the radiation dose received by people in the immediate vicinity would result from inhalation of 239Pu. This is accompanied by the nuclide 241Am, which is much easier to determine by external counting because of the 60 keV gamma ray emission. In the event of an accident, a priority would be to identify any people who have had intakes of 239Pu which were so large that decorporation therapy should be considered. Direct measurement of lung content provides the most rapid and convenient method for assessing intakes by inhalation. A transportable system has been considered as this could be deployed close to the site of the accident and would allow rapid measurements to be made. The feasibility of a transportable 241Am-in-nose-blow and nasal swab measurement system has also been considered. This would be used to help select people for 241Am-in-lung measurements.

Air Pollutants, Radioactive↗