The Experts below are selected from a list of 150 Experts worldwide ranked by ideXlab platform
Colin J Morley - One of the best experts on this subject based on the ideXlab platform.
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neonatal resuscitation 3 Manometer use in a model of face mask ventilation
Archives of Disease in Childhood-fetal and Neonatal Edition, 2005Co-Authors: Colm P F Odonnell, Peter G Davis, Peter A Dargaville, Lex W. Doyle, Colin J MorleyAbstract:Background: Adequate ventilation is the key to successful neonatal resuscitation. Positive pressure ventilation (PPV) is initiated with manual ventilation devices via face masks. These devices may be used with a Manometer to measure airway pressures delivered. The expiratory tidal volume measured at the mask (V TE(mask) ) is a good estimate of the tidal volume delivered during simulated neonatal resuscitation. Aim: To assess the effect of viewing a Manometer on the peak inspiratory pressures used, the volume delivered, and leakage from the face mask during PPV with two manual ventilation devices in a model of neonatal resuscitation. Methods: Participants gave PPV to a modified resuscitation mannequin using a Laerdal infant resuscitator and a Neopuff infant resuscitator at specified pressures ensuring adequate chest wall excursion. Each participant gave PPV to the mannequin with each device twice, viewing the Manometer on one occasion and unable to see the Manometer on the other. Data from participants were averaged for each device used with the Manometer and without the Manometer separately. Results: A total of 7767 inflations delivered by the 18 participants were recorded and analysed. Peak inspiratory pressures delivered were lower with the Laerdal device. There were no differences in leakage from the face mask or volumes delivered. Whether or not the Manometer was visible made no difference to any measured variable. Conclusions: Viewing a Manometer during PPV in this model of neonatal resuscitation does not affect the airway pressure or tidal volumes delivered or the degree of leakage from the face mask.
Henrik Zetterberg - One of the best experts on this subject based on the ideXlab platform.
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effect of spinal Manometers on cerebrospinal fluid amyloid β concentration
Journal of Alzheimer's Disease, 2017Co-Authors: Jamie Toombs, Martha S Foiani, Ross W Paterson, Amanda Heslegrave, Selina Wray, Jonathan M Schott, Michael P Lunn, Kaj Blennow, Henrik ZetterbergAbstract:The effect of spinal Manometers on cerebrospinal fluid (CSF) amyloid-β (Aβ) concentration was investigated. Pooled human CSF samples were divided in two, one half passed through a Manometer into a collection tube, the other transferred directly to a collection tube. CSF was analyzed for Aβ38/40/42 using an electrochemiluminescence immunoassay. Relative to control, use of a Manometer decreased Aβ38/40/42 concentration by 5.6% (±1.5SE), 4.4% (±1.7SE), and 4.3% (±2.4SE), respectively. The ratios of Aβ42 :40, Aβ42 :38, and Aβ40 :38 were not affected by Manometer treatment. Factors which artificially lower CSF Aβ concentrations are relevant to clinical diagnosis for AD and study design.
Frans Werf - One of the best experts on this subject based on the ideXlab platform.
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In vivo comparison between two tip pressure transducer systems
International journal of clinical monitoring and computing, 1995Co-Authors: André E. Aubert, Matty Vrolix, Hilaire Geest, Frans WerfAbstract:Experimental findings are presented of an in vivo comparison between a Sentron catheter and another tip transducer Manometer: a Millar microtip catheter. Both catheters have been used simultaneously in the left ventricle of dogs. Pressure variations were elicited by drug infusion. Pressure values and derivatives obtained from both systems were compared. A cross correlation between episodes of the two pressures was computed. Results from this study showed good correlation between left ventricular systolic pressure measured with both Manometers (R=0.992, p
Colm P F Odonnell - One of the best experts on this subject based on the ideXlab platform.
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neonatal resuscitation 3 Manometer use in a model of face mask ventilation
Archives of Disease in Childhood-fetal and Neonatal Edition, 2005Co-Authors: Colm P F Odonnell, Peter G Davis, Peter A Dargaville, Lex W. Doyle, Colin J MorleyAbstract:Background: Adequate ventilation is the key to successful neonatal resuscitation. Positive pressure ventilation (PPV) is initiated with manual ventilation devices via face masks. These devices may be used with a Manometer to measure airway pressures delivered. The expiratory tidal volume measured at the mask (V TE(mask) ) is a good estimate of the tidal volume delivered during simulated neonatal resuscitation. Aim: To assess the effect of viewing a Manometer on the peak inspiratory pressures used, the volume delivered, and leakage from the face mask during PPV with two manual ventilation devices in a model of neonatal resuscitation. Methods: Participants gave PPV to a modified resuscitation mannequin using a Laerdal infant resuscitator and a Neopuff infant resuscitator at specified pressures ensuring adequate chest wall excursion. Each participant gave PPV to the mannequin with each device twice, viewing the Manometer on one occasion and unable to see the Manometer on the other. Data from participants were averaged for each device used with the Manometer and without the Manometer separately. Results: A total of 7767 inflations delivered by the 18 participants were recorded and analysed. Peak inspiratory pressures delivered were lower with the Laerdal device. There were no differences in leakage from the face mask or volumes delivered. Whether or not the Manometer was visible made no difference to any measured variable. Conclusions: Viewing a Manometer during PPV in this model of neonatal resuscitation does not affect the airway pressure or tidal volumes delivered or the degree of leakage from the face mask.
Muhammad Arif Butt - One of the best experts on this subject based on the ideXlab platform.
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Stability comparison of concentric tube bulb Manometer with conventional U-shaped Manometer
Measurement, 2008Co-Authors: S.s. Daood, Aamir Ijaz, H.m.a. Asghar, M. Ali, Muhammad Arif ButtAbstract:Abstract In continuation of mass flow rate and error analysis comparison, a different comparative performance study is made between concentric tube bulb Manometer (CTB) and U-shaped Manometer using stability response equations. Basic response equation of transfer function would hold for both the devices since the same underlying principle of force balance existed. Whilst variation in stability response was evaluated in terms of deviation form of differential height for different lengths of same amount of sensing fluid. This included a step change forcing function of 20 kPa at a constant value of gain. On the basis of smaller characteristic time constant it was concluded that CTB is stable and more prompt in response as compared to U-shaped Manometer. Response curves for both the Manometers were plotted with the help of MATLAB.
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Study on a Concentric Tube Bulb Manometer and its Performance Compared to U-shaped Manometer
Sensors, 2007Co-Authors: S.s. Daood, Aamir Ijaz, Muhammad Arif ButtAbstract:This paper presents comparative study of a new type of Manometer called concentric tube bulb (C.T.B) Manometer. Its performance of measuring differential height is studied against conventional U-shaped Manometer. Pressure drops and mass flow rates are calculated by taking various systems comprising of different flow measuring devices such as orifice and venturimeters using both U- shaped and C.T.B Manometers. Comparison between the physically measured values of differential pressure drops and mass flow rates with the calculated values based on theoretical equations is also made. Experiments are carried out using mercury and CCl4 in these Manometers as sensing fluids. Water is used as flowing fluid for mass flow rate and pressure drop measurements, whereas in gauge pressure measurements air is used.