The recording of blood pressure with a mercury manometer is subject to variation from two main sources, the individual observer error and change due to time sequence when repeated observations are recorded in a particular subject. The object of this paper is to study the observer error as between two observers in the estimation of blood pressure. This analysis is based on data derived from the ...

OBJECTIVE To compare three devices for manual neonatal ventilation. DESIGN Participants performed a two minute period of ventilation using a self inflating device, an anaesthesia bag with attached manometer, and a Neopuff device. An intubated neonatal mannequin, approximating a 1 kg infant with functional lungs, was used for the study. Target ventilation variables included a rate of 40 breath...

OBJECTIVES To evaluate respiratory muscle strength (RMS) in a sample composed exclusively of healthy sedentary individuals and to compare with predicted values, to investigate the relationship between maximal inspiratory pressure (MIP) and maximal expiratory pressure (MEP) and age, weight and height, and propose predictive equations of MIP and MEP for this population. METHODS Subjects were 14...

BACKGROUND The clinical practice of pediatric anesthesiology has changed with a transition to the use of cuffed endotracheal tubes (ETTs) in infants and children. The monitoring of intracuff pressure has been suggested as one means to limit the potential for damage to the tracheal mucosa. The current study evaluates the accuracy of a novel, color-coded syringe device which provides three zones ...

Continuous positive airway pressure in congenital lobar emphysema Congenital lobar emphysema with air trapping distal to defective bronchial cartilage is an unusual cause of respiratory distress in early infancy.' Prompt treatment, usually lobectomy, may be necessary to maintain ventilation. Until recently medical management had little to offer; indeed, mortality was likely to be increased by t...

2) The catheter is primed with 2 ml of 0.9% normal saline and catheter port splashed to get rid of excess saline. Next, the catheter is raised vertically at the level of mid-scapula in a sitting patient or approximately 1 foot above the level of insertion in a laterally positioned patient. If the catheter tip is positioned epidurally the fluid column will fall in a manner similar to CVP manometer.

Ethanol is largely used as a solvent in the synthesis of varnishes and perfumes. It is also used as a preservative for biological products, fuel, and gasoline additives. Anethanol-water mixture, normally obtained by fractional distillation</span...

mum quantity of ether followed by chloralose 80 milligrammes per kilogramme body-weight being injected intravenously. The eye cannula, combined with the compensatory manometer without the optical arrangement, made on the lines of Sir Stewart Duke-Elder's manometer (1932), was used throughout. The cat was allowed to settle for two hours after the insertion of the cannula into the eye. The variat...

The purpose of this paper is briefly to describe intra-arterial pressure recording by means of a strain gauge pressure transducert and amplifiers. The use of resistance wire strain gauges for blood pressure recording with galvanometers has already been described.1"8 The use of the strain gauge with electronic amplification as a plethysmograph has also been described.2 Since alternating input cu...

− The results of a comparison in differential pressure between CEM-Spain and CENAM-Mexico are presented here. The comparison was performed in 2008. A high accuracy digital manometer was used for the comparison. The manometer had good behaviour during the period of the comparison, having a small drift which had no effect in the comparison. The results of the measurements showed very good agreeme...