BACKGROUND Inappropriately cuffed tracheal tubes can lead to inadequate ventilation or silent aspiration, or to serious tracheal damage. Cuff pressures are of particular importance during aeromedical transport as they increase due to decreased atmospheric pressure at flight level. We hypothesised, that cuff pressures are frequently too high in emergency and critically ill patients but are depen...

Background Pulmonary Hypertensive (PH) is an incurable , and often fatal disease. Currently a patient’s treatment requires periodic office visits to evaluate their progression of right heart failure and increased pulmonary arterial pressures associated with this disease. Invasive and serial right heart catherization (RHC) is the current accepted method for assessing pulmonary arterial pressures...

We demonstrate that a compact manometer experiment allows direct observation of a delay to the classical electric-field-induced Freedericksz transition produced by flow in a highly dispersive nematic liquid crystal layer. The Ericksen-Leslie equations are used to show that a flow aligning torque generated in the nematic layer under Poiseuille flow competes with the orthogonal electric-field reo...

Three sight-type level sensors are glass gauges, displacers, and tape floats. Glass gauges are the most widely used instruments for measuring process tank level. Two types of level glass gauges measure liquid level in process tanks: tubular and flat gauges. The tubular type works on the same principle as a manometer. As the liquid level in an open tank rises or falls, the liquid in the glass tu...

Ventricular function was evaluated in 18 patients prior to left ventriculography and selective coronary arteriography. Simultaneous left ventricular pressure (catheter-tip manometer) and dP/dt were recorded at resting heart rates and during tachycardia induced by right atrial pacing. Pressure-velocity curves were constructed from which Vmax and maximum measured contractile element velocity (max...

Ventricular function was evaluated in 18 patients prior to left ventriculography and selective coronary arteriography. Simultaneous left ventricular pressure (catheter-tip manometer) and dP/dt were recorded at resting heart rates and during tachycardia induced by right atrial pacing. Pressure-velocity curves were constructed from which Vmax and maximum measured contractile element velocity (max...

The objective of this study was to measure the pressure created by different intubation devices on the tongue during endotracheal intubation attempts in the mannequin model. Fourteen specialists and 20 anaesthesiologists in training took part in the study. I connected the manometer with the line used for inflating the mannequin tongue to create simulated conditions of tongue oedema. For the stu...

33. Almost like lesults were obtained by partially asphyxiating a clog as explained in the following experiment. The animal had been anaesthetised and its left carotid artery connected with both a Fick-Manometer and a Ludwio-'d spring-kymograph. It was arranged previously, that on eacli occasion on which a signal would be given, the chloroform cap was to be held closely over the mouth and nose,...