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Emmanuelle Varlet-Marie, Céline Joré, Jean-Frédéric Brun
Bioelectrical impedancemetry (BIA) has been used to evaluate hematocrit and red cell aggregability in vitro but whole body impedance measurements are also correlated to some hemorheologic factors, suggesting a relationship between viscosity factors and electric properties of blood. We repeatedly reported correlations with whole body BIA and hematocrit, whole blood viscosity and plasma viscosity, red cell rigidity and RBC aggregation. The SBIA Inbody 770 modelizes body as 5 cylinders and measures impedance at 1, 5, 50, 250, 500, and 1000 kHz...
2016: Clinical Hemorheology and Microcirculation
Julien Bordes, Philippe Goutorbe, Pierre Julien Cungi, Marie Caroline Boghossian, Eric Kaiser
STUDY OBJECTIVE: To assess the effects of noninvasive ventilation (NIV) during spontaneous breathing anesthesia on functional residual capacity and ventilation distribution. DESIGN: Prospective and observational study. SETTING: Operating room, military teaching hospital. PATIENTS: Eighteen adult patients submitted to digestive endoscopic procedures under spontaneous breathing anesthesia. INTERVENTIONS: Anesthetic management was standardized...
November 2016: Journal of Clinical Anesthesia
Vittorio Giusti, Fanny Theytaz, Véronique Di Vetta, Muriel Clarisse, Michel Suter, Luc Tappy
BACKGROUND: The effect of a Roux-en-Y gastric bypass (RYGB) on body weight has been amply documented, but few studies have simultaneously assessed the evolution of energy and macronutrient intakes, energy expenditure, and changes in body composition over time after an RYGB. OBJECTIVE: We evaluated energy and macronutrient intakes, body composition, and the basal metabolic rate (BMR) in obese female patients during the initial 3 y after an RYGB. METHODS: Sixteen women with a mean ± SEM body mass index (in kg/m(2)) of 44...
January 2016: American Journal of Clinical Nutrition
A Job, P Hamery, S De Mezzo, J-C Fialaire, A Roux, M Untereiner, F Cardinale, H Michel, C Klein, B Belcourt
OBJECTIVE: We tested middle-ear functioning in humans following intense exposure to noise. Noise generated by small caliber firearms was thought to have no effect on the middle-ear. DESIGN: A cross-over design. We measured middle-ear impedance, acoustic reflex, distortion product otoacoustic emissions (DPOAEs), and transient evoked otoacoustic emissions (TEOAEs) before and after practice rounds performed twice per day. STUDY SAMPLE: Fifty-nine soldiers equipped with earplugs undergoing regular training for a special mission...
2016: International Journal of Audiology
Murat Şereflican, Veysel Yurttaş, Mesut Oral, Beyhan Yılmaz, Muharrem Dağlı
OBJECTIVE: To investigate the effects of different types of nasal packings on middle ear pressure in patients undergoing septoplasty. MATERIALS AND METHODS: Sixty patients who were suffering from nasal obstruction and who had to undergo septoplasty because of nasal septal deviation were included in the study. After the septoplasty, Merocel packings and internal nasal splints were intraoperatively applied in thirty patients each. Middle ear pressure was evaluated by tympanometry...
April 2015: Journal of International Advanced Otology
Natal'ya S Komarova, Alexander G Krivenko, Elena V Stenina, Liana N Sviridova, Kirill V Mironovich, Yuri M Shulga, Victor A Krivchenko
The effects of electrochemical oxidation and surfactant adsorption on behavior of vertically oriented carbon-nanowall (CNW)-based electrodes are studied. Electrochemical oxidation is carried out by the electrode polarization in aqueous solutions at high anodic potentials corresponding to water electrolysis, whereas the modification of surface by surfactants is accomplished by the adsorption of molecules characterized by the cage-like structure. Using the methods of cyclic voltammetry and impedancemetry, it is shown that a substantial increase in the capacitance of CNW-based electrodes is observed in both cases (30-50-fold and 3-5-fold, respectively)...
June 30, 2015: Langmuir: the ACS Journal of Surfaces and Colloids
V B Noskov, I A Nichiporuk, G Yu Vasilieva, Yu I Smirnov
According to the Sprut-2 protocol, bio-impedancemetry of ISS cosmonauts was performed once a month and also before and after mission. Multiple non-invasive body measurements were carried out in 15 cosmonauts in real time. Relocation of extracellular liquid along the body axis led to its reduction in legs and, on the contrary, an increase in the abdomen. Volumes of total body liquid as well as intra- and extracellular liquids decreased in comparison with pre-flight levels. Lean body mass also became less in microgravity, whereas fat mass showed an increase...
2015: Aviakosmicheskaia i Ekologicheskaia Meditsina, Aerospace and Environmental Medicine
Xavier Calvet, Albert Villoria
At Digestive Disease Week (DDW) 2014, developments in esophageal disease were presented. Highlights include: the usefulness of impedancemetry to diagnose reflux disease, or the effectiveness of PPIs for treating non-cardiac chest pain. Concerning Barrett's esophagus, its prevalence is identical in patients with and without reflux symptoms, Barrett segments less than 1cm probably do not require follow-up, and in older patients with long-segment Barrett, initial endoscopies overlooked up to 2% of significant lesions...
September 2014: Gastroenterología y Hepatología
Marije J Smits, Michiel P van Wijk, Miranda W Langendam, Marc A Benninga, Merit M Tabbers
BACKGROUND: In infants, apneas can be centrally mediated, obstructive or both and have been proposed to be gastroesophageal reflux (GER) induced. Evidence for this possible association has never been systematically reviewed. PURPOSE: To perform a systematic review using PubMed, EMBASE and Cochrane databases to determine whether an association between GER and apnea in infants exists. Studies with n ≥ 10 infants, aged <12 months, were included. GER had to be studied by pH-metry or pH-impedancemetry...
November 2014: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
Céline Pasian, Fitsum Guebre-Egziabher, Emilie Kalbacher, Christine Pommerol, Denis Fouque
UNLABELLED: Malnutrition is an independent factor associated with morbi-mortality in chronic kidney disease. It is particularly common and may increase during hospitalization. OBJECTIVES: To measure nutritional and physical performance evolution as well as patients' physical autonomy during a hospitalization in a university hospital renal ward. Treatments were adjusted according to different diagnoses (nutritional care, body composition, physical activity) along with a multidisciplinary approach...
July 2014: Néphrologie & Thérapeutique
T Ribeiro, G Romestant, J Depoortere, A Pauss
The impedancemetry method can be used in Microbiology to perform the detection, quantification and even identification of some bacteria. Basic knowledge about this subject can be stated from Ur and Brown (1975), Firstenberg-Eden and Eden (1984), the reviews of Silley and Forsythe (1996), and Wawerla et al. (1999). With Escherichia coli, Bacillus subtilis and Saccharomyces cerevisiae cultures, the conductimetric responses were highly replicable, and repeatable for inocula concentrations from 1 to 10(8) CFU mL(-1)...
2003: Communications in Agricultural and Applied Biological Sciences
Walid Arkouche, Philippe Giaime, Lucile Mercadal
The water sodium overload is a factor of morbi-mortality and its treatment is one of the markers of adequacy of the hemodialysis treatment. Its first clinical assessment was improved by tools such as echocardiography and ultrasonography of the inferior vena cava, the per-dialytic curve of plasma volume, measuring BNP or proBNP and by impedancemetry. The combination of the evaluation of these parameters and of the clinical situation allows one to assess the extracellular overload, the state of the blood volume and the potential of plasma refilling...
November 2013: Néphrologie & Thérapeutique
A Castellucci, C Brandolini, G Piras, G C Modugno
The diagnostic role of audio-impedancemetry in superior semicircular canal dehiscence (SSCD) disease is well known. In particular, since the first reports, the presence of evoked acoustic reflexes has represented a determining instrumental exhibit in differential diagnosis with other middle ear pathologies that are responsible for a mild-low frequencies air-bone gap (ABG). Even though high resolution computed tomography (HRCT) completed by parasagittal reformatted images still represents the diagnostic gold standard, several instrumental tests can support a suspect of labyrinthine capsule dehiscence when "suggestive" symptoms occur...
April 2013: Acta Otorhinolaryngologica Italica
Guillaume Costalat, Jeremy Coquart, Ingrid Castres, Claire Tourny, Frederic Lemaitre
PURPOSE: Voluntary breath-holding (BH) elicits several hemodynamic changes, but little is known about maximal static immersed-body BH. We hypothesized that the diving reflex would be strengthened with body immersion and would spare more oxygen than maximal dry static BH, resulting in a longer BH duration. METHODS: Eleven trained breath-hold divers (BHDs) performed a maximal dry-body BH and a maximal immersed-body BH. Cardiac output (CO), stroke volume (SV), heart rate (HR), left ventricular end-diastolic volume (LVEDV), contractility index (CTI), and ventricular ejection time (VET) were continuously recorded by bio-impedancemetry (PhysioFlow PF-05)...
October 2013: European Journal of Applied Physiology
M M Magomedov, Iu V Levina, A Iu Nikitkin
The objective of the present work was to study specific features of the eustachian tube after the insertion of the shunt into the tympanic membrane and to measure the pressure necessary to ensure passive opening of the tube in the patients presenting with exudative otitis medium (EOM). The study included 87 patients with this pathology who underwent shunting of the tympanic cavity following a course of conservative treatment. Threshold audimetry and acoustic impedancemetry were performed in all the patients to estimate the patency of the eustachian tube with the perforated tympanic membrane...
2013: Vestnik Otorinolaringologii
Iu K Ianov, I A Anikin, V E Kuzovkov, S M Petrov, Kh M Diab, A A Shchukina, G R Azizov
The purpose of the present study was to develop a method for the objective registration of the stapedial reflex at the contralateral ear during cochlear implantation surgery on the affected one. The excessive pressure in the middle ear (up to 500 daPa) was compensated by the administration of an additional air volume (1 liter) into the AA220 impedance meter pneumatic circuit. A syringe was used to measure variations of pressure in the new pneumatic circuit. Eight of the 12 patients demonstrated coincident visual and objective reflex thresholds...
2013: Vestnik Otorinolaringologii
Caroline Créput, Daniel Toledano, Thierry Petitclerc
PURPOSE: A direct determination of Kt/V using ionic dialysance for estimating K and bio-impedancemetry for estimating V is compared with the usual indirect estimation based on the second generation Daugirdas equation during a new technique of hemodiafiltration with simultaneous pre- and post-dilution (mixed-HDF).
 METHODS: In 31 informed consented patients, the urea distribution volume (V) is estimated by total body water (VBCM  ) measured by the Body Composition Monitor (BCM; Fresenius Medical Care, Bad Homburg, Germany) based on bio-impedance spectroscopy...
May 17, 2013: International Journal of Artificial Organs
Emmanuelle Varlet-Marie, Marie Guiraudou, Christine Fédou, Eric Raynaud de Mauverger, Fabienne Durand, Jean-Frédéric Brun
Body composition and nutrition have been reported to be correlated with blood rheology. However, in sedentary and in physically active individuals these relationships seem to be not exactly similar. This study investigated whether exercise training status influences these relationships. 32 athletes (ATH) (age: 25 ± 0.7 yr; body mass index (BMI): 23.75 ± 0.23 kg/m2) were compared to 21 sedentary subjects (SED) (age: 45.19 ± 2.90; BMI = 33.41 ± 1.33) with nutritional assessment (autoquestionnaire), bioelectrical impedancemetry, viscometry at high shear rate (MT90) and Myrenne aggregometer...
2013: Clinical Hemorheology and Microcirculation
E Parlea, M Georgescu, R Calarasu
BACKGROUND: Otitis media with effusion (OME) is one of the most frequently met pathologies in small children. Long-term persistence of the liquid in the middle ear cavity correlates with the impairment in speech acquisition and poor results in school. AIM: To evaluate the predictive value of impedancemetry in recovery of the normal middle ear status. METHODS: 30 children (age 4 month-9 years) with OME were periodically monitored by means of tympanometry...
December 15, 2012: Journal of Medicine and Life
A Alayoud, D Montassir, A Hamzi, Y Zajjari, A Bahadi, D El Kabbaj, O Maoujoud, T Aatif, K Hassani, M Benyahia, Z Oualim
The availability of hemodialysis machines equipped with online clearance monitoring (OCM) allows frequent assessment of dialysis efficiency and adequacy without the need for blood samples. Accurate estimation of the urea distribution volume (V) is required for Kt/V calculated from OCM to be consistent with conventional blood sample-based methods. A total of 35 patients were studied. Ionic dialysance was measured by conductivity monitoring. The second-generation Daugirdas formula was used to calculate the Kt/V single-pool (Kt/VD)...
September 2012: Indian Journal of Nephrology
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