We investigated the effect of a small bellows leak (bellows full at end-expiration) on inspired oxygen fraction (Fio(2)), exhaled tidal volume (Vt), airway pressure, and room contamination in an oxygen-driven anesthesia ventilator (Ohmeda 7810, Madison, WI). CO(2) concentration at the ventilator exhalation valve, Fio(2), Vt, and airway pressure were measured (n = 3) while ventilating a CO(2)-pr...

OBJECTIVE To present a unique case of neck dissection with intraoperative chyle leak and subsequent recurrent high output chyle fistula treated with conservative management. STUDY DESIGN Case report. METHODS Literature review of intra-operative chyle leak and post operative chyle fistula management with discussion of a recent representative case within our health system. RESULTS We presen...

BACKGROUND The relatively recently developed I-gel (Intersurgical Ltd., Workingham, England) is a supraglottic airway device designed for single-use that, unlike conventional LMAs, does not require an inflatable cuff. In addition, the I-gel, much like the Proseal LMA (PLMA), has a gastric drainage tube associated with an upper tube for decompression of the stomach, thereby avoiding acid reflux ...

Many fluids transported by pipelines are hazardous. It is therefore often necessary to install leak detection (and localization) systems (LDS), especially due to legal regulations like • the “Code for Federal Regulations (CFR) Title 49 Part 195” [1], API 1130 2 Ed. [2], both for the USA, or • the “Technische Regeln für Fernleitungen” (TRFL) (Technical Rules for Pipelines) in Germany [5]. This p...

BACKGROUND Ventilator-induced lung injury-(VILI-) induced endothelial permeability is regulated through the Rho-dependent signaling pathway. Ibuprofen inhibits Rho activation in animal models of spinal-cord injury and Alzheimer's disease. The study aims to investigate ibuprofen effects on high tidal volume associated VILI. METHODS Twenty-eight adult male Sprague-Dawley rats were randomized to...

A recent systematic review and meta-analysis shows that volume-targeted ventilation (VTV) compared with pressurelimited ventilation (PLV) reduce death and bronchopulmonary dysplasia, pneumothorax, hypocarbia and severe cranial ultrasound abnormalities. In this paper, we present published research and our experience with volume guarantee (VG) ventilation, a VTV mode available on the Dräger Babyl...

Drilling fluid loss always occurs in fracture-porosity reservoirs and it causes severe problems. To reduce prevent lost circulation, is important to get know the cause characteristic of drilling loss. According approach reservoir simulation well test analysis, a new model for presented. Multi fractures formation seepage between fracture rock matrix have been considered model. The governing equa...

In the Oil & Gas pipeline leak detection market today, there are several software based methodologies available – ranging from simplistic pressure wave methods, to real-time model-based volume balance techniques. All approaches have inherent advantages and disadvantages, defi nable in terms of simplicity of implementation/maintenance needs, reliability, cost, robustness, availability, and accur...

Inverse Transient Analysis (ITA) is a powerful approach for leak detection of pipelines. When the pipe transient flow is analyzed in frequency domain the ITA is called Inverse Frequency Response Analysis (IFRA). To implement an IFRA for leak detection, a transient state is initiated in the pipe by fast closure of the downstream end valve. Then, the pressure time history at the valve location is...