A new method for measuring and correcting air leaks during lung-function testing in infants has been validated in vitro and in vivo by using a flow-through system that measured the inflow and outflow of a face mask. An adjustable leak was quantified by using suction flow to validate the accuracy of leak measurements. To validate the leak correction, the volume of a pump was measured with differ...

BACKGROUND There is not enough evidence to determine the most appropriate treatment of postextubation stridor. Although the cuff leak test is a simple method to predict postextubation stridor, little is known about its use in monitoring the effects of steroid treatment for this complication. The aim of this study was to evaluate the effect of steroids on postextubation stridor based on the clin...

Leak detection techniques are not exclusively used for the vacuum products but are finding increasing applications in almost all industrial areas. Therefore, leak definition is evolving to accommodate the industry point of view. A leak always requires a flow of mass though the walls of a volume intended to be sealed. It usually results in escape or admission of liquids or gases from sealed comp...

Prolonged air leak (PAL), defined as air leak more than 5 days after lung resection, has been associated with various adverse outcomes. However, studies on intraoperative risk factors for PAL are not sufficient. We investigated whether the intraoperative ventilatory leak (VL) can predict PAL. A retrospective study of 1060 patients with chest tubes after lung resection was conducted. Tidal volum...

0026-2714/$ see front matter 2008 Published by doi:10.1016/j.microrel.2008.07.067 * Corresponding author. E-mail address: [email protected] (A. The MIL-Spec-based helium fine leak test (test condition A1 and test condition A2) is reviewed for its applicability to packages with sub-micro liter cavity volumes. The existing gas conduction models are utilized to investigate the validity of ...

We studied the size 4 laryngeal mask airway (LMA) to test the hypothesis that oropharyngeal leak pressure and fibreoptic position improves with increasing cuff volume. After LMA insertion, 50 anaesthetized adult patients had the cuff inflated in 5-ml increments to 40 ml. Oropharyngeal leak pressure was optimal at 15 ml and decreased at higher volumes. The fibreoptic position was optimal at 0-20...

risk assessment and management of petrochemical feed and product transportation pipelines is very important to preventing probable accidents. so, 60 pipelines evaluated by chemical exposure index and chlorine pipeline due to high hazard distances selected for relative risk analysis. the chlorine pipeline with 3468 meter length divided to 100 meter sections, and third party damage index (tpdi), ...

Recently, the vacuum technology has gained a significant relevance in many areas of basic research and applied science. Low-pressure environment of various quality is in common use in the top technology industrial applications. In the most cases, the leaks are the most common sources of deterioration in quality of vacuum. Therefore, the leak detection and consequential leak localization become ...

OBJECTIVE To determine whether treatment with corticosteroids decreases the incidence of postextubation airway obstruction in an adult intensive care unit. DESIGN Clinical experiment. SETTING Adult medical and surgical intensive care unit of a teaching hospital. PATIENTS One hundred twenty-eight patients who were intubated for >24 hrs with a cuff leak volume <24% of tidal volume and met w...

AIM To investigate the contribution of fluorescein angiographic leaking microaneurysms (leak-MA) versus non-leaking microaneurysms (non-leak-MA) to retinal thickening in diabetic retinopathy. METHODS A consecutive series of 38 eyes from 24 patients with diabetic retinopathy was included. Leak-MA and non-leak-MA in each eye were selected in pairs at corresponding topographic location. Leaking ...