*  Short and long term variability of the interrupter technique under field and standardised conditions in 3-6 year old children |...
Our study has shown that within-subject variability of the interrupter technique over a period of some weeks was comparable to within-subject variability over a period of 20-30 minutes, indicating that interrupter resistance may be a stable individual characteristic over a period of some weeks. The repeatability of interrupter resistance measurements over both short and long term intervals was satisfactory. Furthermore, within-subject variability over a period of some weeks under field conditions was only slightly higher than under standardised conditions, in spite of the fact that five observers and two pieces of equipment were involved.. The SDw for short term variability was found to be comparable to the SDw reported by others. Previous studies considered short term variability satisfactory, where a low SDw indicates a small variability over time. Klug et al6 found an SDw for short term variability of 0.08 kPa/l/s in healthy children 2-7 years of age. Furthermore, an SDw ...
  http://thorax.bmj.com/content/58/9/761
*  Resistance measurement | definition of Resistance measurement by Medical dictionary
Looking for online definition of Resistance measurement in the Medical Dictionary? Resistance measurement explanation free. What is Resistance measurement? Meaning of Resistance measurement medical term. What does Resistance measurement mean?
  http://medical-dictionary.thefreedictionary.com/Resistance+measurement
*  Airway Resistance BT PO 1.16 | Primary LO of the Day
BT_PO 1.16 Describe the factors affecting airway resistance and how airway resistance may be measured. TRUE/FALSE An increase in airway resistance will cause a decrease in FEV1. TRUE/FALSE Airway resistance measurement with an oesophageal balloon is inaccurate in severe airways disease. TRUE/FALSE Airway resistance is highest in the terminal bronchioles. TRUE/FALSE Flow in medium sized airways is laminar. TRUE/FALSE Airway conductance is linearly related to lung volume. ...
  https://primarydailylo.wordpress.com/2016/11/23/airway-resistance-bt_po-1-16/
*  Treatment for Upper Airway Resistance Syndrome - Sleep Apnea / Disorders - MedHelp
Hello, I just reviewed my medical records which included a sleep study. Apparently, according to the paper work I have a diagnosis of upper airway resistance syndrome (23 arousals an hour). No one ...
  http://www.medhelp.org/posts/Sleep-Apnea---Disorders/Treatment-for-Upper-Airway-Resistance-Syndrome/show/1247321
*  ASTM C522 - 03(2016) Standard Test Method for Airflow Resistance of Acoustical Materials
C522 - 03(2016) Standard Test Method for Airflow Resistance of Acoustical Materials , absorption, acoustical materials, airflow resistance, airflow resistivity ,,
  https://www.astm.org/Standards/C522.htm
*  Comparison of the Effects of Etomidate, Propofol, and Thiopental on Respiratory Resistance after Tracheal Intubation |...
Respiratory resistance was measured by the isovolume method [7] at 500 ml above functional residual capacity. Before each study, a Datex Ultima Capnomac spirometer (Datex Instrumentation, Helsinki, Finland) was calibrated for volume using a 1-1 syringe (Hans Rudolph, Kansas City, Mo). The ventilatory flow and pressure curves were sampled at 10-ms intervals, output to a personal computer, and the volume curve then determined by integration of the flow curve. The pressure drop across the endotracheal tube was excluded by first constructing a pressure-flow curve for both the 7.5-mm and 8-mm endotracheal tubes. For each measurement, the pressure drop across the tube for the flow noted was subtracted from the pressure measurements used during calculation, resulting in a value for R sub rs exclusive of the endotracheal tube. The isovolume method of resistance measurement is a technique applicable to mechanically ventilated patients and is based on measuring ...
  http://anesthesiology.pubs.asahq.org/article.aspx?articleid=2344699
*  Contrasting Effects of Lower Body Positive Pressure on Upper Airways Resistance and Partial Pressure of Carbon Dioxide in Men...
This study provides several insights relevant to the pathogenesis of OSA and CSA in men with HF. First, in the obstructive-dominant group, application of LBPP, which displaced 260 ml of fluid from the legs, increased NC and induced a degree of upper airway obstruction, reflected by an increase in Rph. This was a physiologically significant effect because it was sufficient to reduce Vmin and increase PtcCO2. Second, in the central-dominant group, LBPP displaced a similar amount of fluid from the legs and resulted in an increase in NC similar to that in the obstructive-dominant group. However, in contrast to the obstructive-dominant group, LBPP induced a reduction in Rph accompanied by an increase in Vmin. These changes were physiologically significant because they were sufficient to reduce PtcCO2 by 1.4 mm Hg; they might also be clinically significant because a decrease of this magnitude can induce central apnea during sleep in HF patients (9,18). These data suggested that a ...
  http://www.onlinejacc.org/content/61/11/1157
*  Changes in specific airways conductance and forced expiratory volume in one second after a bronchodilator in normal subjects...
Skinner, C. and Palmer, K.N.V. (1974).Thorax, 29, 574-577. Changes in specific airways conductance and forced expiratory volume in one second after a bronchodilator in normal subjects and patients with airways obstruction. Specific conductance (SGaw) and the forced expiratory volume in one second (FEV1) were measured in 10 normal, 10 asthmatic, and 10 obstructive bronchitic subjects before and after aerosol salbutamol. Mean SGaw increased by 37% in normals, by 109% in asthmatics, and by 38% in obstructive bronchitics. Mean FEV1 increased by 2% in normals, by 32% in asthmatics, and by 12% in obstructive bronchitics. SGaw appears to be a more sensitive indicator than FEV1 of changes in airways calibre following a bronchodilator drug in normal subjects, but FEV1 is as good an indicator of these changes as SGaw in patients with ...
  http://thorax.bmj.com/content/29/5/574
*  Forced oscillation technique in the detection of smoking-induced respiratory alterations: diagnostic accuracy and comparison...
Detection of smoking effects is of utmost importance in the prevention of cigarette-induced chronic airway obstruction. The forced oscillation technique offers a simple and detailed approach to investigate the mechanical properties of the respiratory
  http://www.biomedsearch.com/nih/Forced-oscillation-technique-in-detection/21340218.html
*  Association between respiratory mechanics and autonomic function in morbid obesity
Introduction. Overweight contributes to the development of significant cardiorespiratory impairments, including the increase in airway and respiratory system resistance, limited ventilatory capacity, and changes in the cardiovascular autonomic function. As these changes are proportional to the body mass index (BMI), they are more pronounced in patients with morbid obesity.1,2. The respiratory system resistance and its components can be determined using the Forced Oscillation Technique (FOT), described by Dubois et al. in 1956 as a non-invasive method for the evaluation of mechanical properties of the respiratory system in different frequencies.3 Morbidly obese patients also present increased cardiovascular sympathetic discharge and reduced parasympathetic activity.4 Because heart rate variability is influenced by the autonomic control, the time and frequency-domain analysis of RR intervals has been recognized as an effective and non-invasive ...
  http://www.elsevier.pt/pt/revistas/revista-portuguesa-pneumologia-420/artigo/-S2173511513001012
*  Effects of Pleural Effusion Drainage on Respiratory System Mechanics - Full Text View - ClinicalTrials.gov
The use of esophageal balloon allows us to partition respiratory system into its components, namely, chest wall and lung compliance. These measurements have not been described so far in patients undergoing pleural fluid drainage. Thus, assessment of esophageal pressure which is a surrogate of pleural pressure will allow us an accurate measurement of the effect of pleural fluid drainage on chest wall and lung mechanics ...
  https://clinicaltrials.gov/ct2/show/NCT01652521?recr=Open&cond=%22Pleural+Diseases%22&rank=14
*  Plus it
Airways resistance measured by forced oscillation technique (FOT) is suggested to be a more sensitive marker of airway obstruction than spirometry. The significance of increased airways resistance after bronchial challenge in absence of significant FEV1-fall has not been studied. Furthermore, the choice of using inspiratory or expiratory resistance is debated.. Exhaled NO (FeNO) at baseline and FEV1 and within-breath inspiratory and expiratory resistance at 5 Hz (R5insp and R5exp) were measured before and 10 minutes after a standardized exercise test in 116 children, aged 13-16 years, a subsample from a population-based study where subjects with current asthma were excluded. EIB was defined as a FEV1-fall≥10%.. Higher baseline R5insp levels, but similar FEV1 levels (p=0.14) and R5exp (p=0.73), were found in subjects with EIB ...
  http://erj.ersjournals.com/content/44/Suppl_58/P3967
*  Lung recruitment assessed by total respiratory system input reactance
PURPOSE: ALI and ARDS are associated with lung volume derecruitment, usually counteracted by PEEP and recruitment maneuvers (RM), which should be accurately tailored to the patient's needs. The aim of this study was to investigate the possibility of monitoring the amount of derecruited lung by the forced oscillation technique (FOT). METHODS: We studied six piglets (26 +/- 2.5 kg) ventilated by a mechanical ventilator connected to a FOT device that produced sinusoidal pressure forcing at 5 Hz. The percentage of non-aerated lung tissue (V (tiss)NA%) was measured by whole-body CT scans at end-expiration with zero end-expiratory pressure. Respiratory system oscillatory input reactance (X (rs)) was measured simultaneously to CT and used to derive oscillatory compliance (C (X5)), which we used as an index of recruited lung. Measurements were performed at baseline and after several interventions in the following sequence: mono-lateral reabsorption atelectasis, RM, bi-lateral derecruitment induced by ...
  http://uu.diva-portal.org/smash/record.jsf?pid=diva2:289098
*  Oasys Sleep
The OASYS Oral/Nasal Airway System™ is the first dental device for Snoring, Obstructive Sleep Apnea (OSA) and Upper Airway Resistance Syndrome (UARS) that treats the two major causes of sleep disordered breathing by addressing upper airway resistance in the nasal region and blockage in the throat region. The OASYS is FDA approved as a medical device in two separate classifications (1) As a mandibular repositioner for treatment of snoring and sleep apnea and (2) As a nasal dilator for improved ease of breathing.. The OASYS treats both vulnerable areas of the upper airway with one patented system while strengthening the throat area by pulling the lower jaw and tongue forward to prevent the tongue from blocking the airflow and strengthening the throat against collapse. ...
  http://oasyssleep.com
*  Airway resistance (RL) and dynamic compliance (Cdyn) as | Open-i
Airway resistance (RL) and dynamic compliance (Cdyn) as measures of lung function and airway reactivity. Basal values of RL (A) and Cdyn (B), and MCh challenge-
  https://openi.nlm.nih.gov/detailedresult.php?img=PMC4325826_ehi-suppl.1-2014-063f1&req=4
*  Plus it
Nasal airway resistance was assessed in halothane-anesthetized rats by measuring the transnasal pressure at constant airflow through both nasal cavities. Low inflation pressures (2.5-5 cmH2O) decreased nasal airway resistance, whereas higher inflation pressures (10-20 cmH2O) caused a biphasic response: an initial increase in resistance followed by a decrease in resistance. The nasal responses to all levels of inflation were completely abolished by hexamethonium, guanethidine, or bretylium pretreatment or cervical sympathectomy and greatly lessened by cervical vagotomy or phenoxybenzamine pretreatment. Atropine and propranolol pretreatments had no effect on the responses. These findings indicate that the nasal airway resistance is related to the level of inflation through pulmonary reflexes with afferents along the vagi and ...
  http://jap.physiology.org/content/63/4/1339
*  Patent US3898557 - Electrical device for testing a ground fault circuit interrupter - Google Patents
An electrical circuit for extensive testing of a ground fault interrupter. Means to create a current differential between the hot and neutral conductors of a ground fault interrupter device, and thereby test the circuit interrupt features of said device, are disclosed. Means are also provided for determining the sensitivity of the device being tested to an accidental grounding of the neutral conductor. The invention also can be used to check the wiring connections between the ground fault interrupter and the electrical system to which it is attached. A further advantage of the invention is that it provides an indirect test of said electrical system. Modifications to the circuitry will provide similar testing devices for two and three phase ground fault interrupters.
  http://www.google.com/patents/US3898557?dq=Frischling
*  Influence Of Different Airflow Resistances On Drug Effect Of 50μg Salmeterol And 6 μg Formoterol - Full Text View -...
Effect of inhaled drugs administered as dry powder is not only dependent on drug efficacy but also on technical properties of the inhalers. Different inhalers have different internal resistances and therefore it is expected that patients with limited airflow may have different exposure rates of drugs delivered from different ...
  https://clinicaltrials.gov/ct2/show/NCT00327353
*  Temperature responsive current interrupter - Patent # 4126845 - PatentGenius
A temperature responsive current interrupter in which two conductors are connected by electrically conductive, low-melting-point fusible elements respectively mounted on the conductors and a connector element interconnecting the fusible elements and urged against an electrically non-conductive high-melting-point fusible element, the connector element being moved into a position separate from at least one of the conductors when the high-melting-point fusible element is melted by heat.
  http://www.patentgenius.com/patent/4126845.html
*  SkinCeuticals A.G.E. Interrupter Reviews + Free Post
Enjoy free delivery for SkinCeuticals A.G.E. Interrupter with same-day dispatch! Read reviews, buy now & pay later with Afterpay.
  https://www.adorebeauty.com.au/skinceuticals/skinceuticals-a-g-e-interrupter.html
*  Automatic Testing Of Infrared Components | (1983) | Gurien | Publications | Spie
This paper discusses the techniques utilized during automated testing of Z-technology modules for mosaic focal planes. The testing includes continuity and isolation resistance measurements on both layers and modules, and functional tests of the Signal Processing Chips as they are wirebonded to the modules. The criteria for layer selection, empirically derived, is presented. Test results are presented and their impact on product development are described ...
  http://spie.org/Publications/Proceedings/Paper/10.1117/12.934229
*  1:42 am
Grading the severity of obstruction in mixed -obstructive-restrictive lung disease. Chest 140:598-603, 2011. 7. Krowka MJ, Enright PL, Rodarte JR, Hyatt RE. Effect of effort on measurement of forced -expiratory volume in one second. Am Rev Respir Dis 136:829-833, 1987. indd 34 30/01/14 10:36 AM 4 Diffusing Capacity of the Lungs An important step in the transfer of oxygen from ambient air to the arterial blood is the process of diffusion, that is, the transfer of oxygen from the alveolar gas to the hemoglobin within the red cell. 1 gives: PB VF = (PB + ∆P)(VF − ∆V) Piston and: Simplifies to: VF = ∆V (PB + ∆P) ∆P VF = ∆V (PB) ∆P FIG. 3-6. The subject is seated in an airtight plethysmograph and the pressure in the plethysmograph (Ppleth) changes with changes in lung volume. When the subject stops breathing, alveolar pressure equals barometric pressure (Pb). Consider what happens if the valve at the mouth is closed at the end of a quiet expiration, that is, FRC, and the subject makes ...
  http://nicola.dinobert.hercules.uberspace.de/index.php/download/interpretation-of-pulmonary-function-tests
*  Y V ~ F: y f ǡP ??w ̪ w A v?? y { A W ?? P } o x?? ??R - GII
Y V ~ F: y f ǡP ??w ̪ w A v?? y { A W ?? P } o x?? ??R Head and neck cancer: Epidemiology and patient-based market forecasts, treatment algorithm, and marketed and pipeline drug analysis ...
  http://www.giichinese.com.tw/report/dchc365175-head-neck-cancer.html
*  US2009001841 DEVICE, SYSTEM AND METHOD FOR AUTOMATIC SELF-TEST FOR A GROUND FAULT INTERRUPTER
This patent search tool allows you not only to search the PCT database of about 2 million International Applications but also the worldwide patent collections. This search facility features: flexible search syntax; automatic word stemming and relevance ranking; as well as graphical results.
  https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2009120323