injection port resulted in an immediate reduction of the pressure to 16-20 mm Hg. (By inserting the manometer adapter into the injection port, the one-way function of the valve was cancelled and flow occurred from cuff to external balloon.) In view of this serious potential for undetected clinical abuse, we feel that the controlled pressure cuff system does not replace the need for frequent mon...

Ballistocardiograms were recorded simultaneously with intra-atrial and intra-aortic pressure curves, heart sounds, electrokymograms and electrocardiograms in patients with various types of heart disease. In several of these subjects, in addition to the usual ballistic waves, abnormal sets of ballistic complexes occurred. In some individuals, one or more of these abnormal ballistic complexes was...

The estimation of central venous pressure (CVP) by inspection of the neck veins is regarded as a quintessential example of effective bedside cardiovascular examination because it is virtually cost-free and requires minimal time and no equipment. In the upright position, venous drainage from the head occurs primarily through the vertebral veins, allowing the jugular vein to act as a manometer, “...

This article reports the development of a solid state pressure transducer for use in the measurement of blood pressure. It is intended to act as a replacement gauge for the mercury and aneroid manometers used in conventional sphygmomanometers. It measures pressure in the range 0-300mmHg (0-40kPa) with a resolution of 1mmHg (0.13kPa) and an accuracy of +1mmHg (+0.13kPa) which is displayed on a l...

This paper was discussed the hardware components of a remotely controlled water channel management system for laboratory education utilizing internet things(IoT) and supervisory control data acquisition systems (SCADAs). The consists various sensors devices included air pressure sensor (mpx5010dp), sensor, ultrasonic distance (JSNSR04T) solenoid valve plastic. (mpx5010dp) used to detect level i...

Relationships between artefacts in recorded intracardiac pulses and the dynamic response and susceptibility of catheter-manometer systems to artefacts caused by motion of the catheter were investigated. Sine-wave motions of the catheter, resembling motion frequently seen when the catheter is in the pulmonary artery, produce sine-wave pressure variations with peak-to-peak amplitudes of 10 mm. Hg...

A flowmeter is described which may be used to measure gas flow in experimental situations. It may be adapted for use with any gas or gas mixture and be used to provide flows as small as 50 ml min-1. A mercury-in-glass manometer (sphygmomanometer) is used to measure the gas pressure proximal to a flow restrictor (consisting of a hypodermic needle hub) and it is this pressure head which, for a gi...

Rice husk is a waste product whose utilization not optimal in Indonesia. husks contain organic materials the form of cellulose, hemicellulose, and lignin; minerals silica, alkali, trace elements. The silica content rice very high, ranging from 87-97% to other minerals. Silica nanoparticles were synthesized through various methods, including sol-gel method, combustion combination obtain purity s...

A compressor is one component of the working air system on board ship which related to carrying out smooth motion. Auxiliary aircraft two-level compressors in operation ships for start process main engine, generator, and bow thruster are important parts ship, also processing motion with using a pneumatic gearbox. The purpose this study was optimize maintenance SV Ships. Stella 28. This research...