history and objectives: insertion of intragastric tube through nose in infants for evaluation of congenital abnormalities of nose, esophagus and stomach in early hours after birth can lead to some complications (bradycardia, apnea and/or cyanosis) as a result of the stimulation of receptors of pharynx. this study was carried out to determine the complications in javaheri hospital affiliated to ...

Natural plankton assemblages were incubated with a small piece of silicone. Tygon or latex rubber tubing in 200 m1 of culture to determine potential long-term toxic effects of the tubing. Drastic decreases in cell numbers and chlorophyll fluorescence indicated that over 95 "h of the phytoplankton were killed by the latex rubber tubing in 4 d. Even a 1 mm piece of latex tubing lulled -90 % of th...

3.1 Overview 3.2 Overview of Nodal Analysis 3.3 Selection and Determination of Tubing and Production Casing Sizes for Flowing Wells Importance of Sensitivity Analysis of Tubing Size Sensitivity Analysis and Optimization of Tubing Size of Flowing Well Optimization Method Based on Surface Tubing Pressure Derived by Given Separator Pressure Optimization Method Based on the Given Wellhead Tubing Pr...

Plasticized polyvinyl chloride tubing is used as the blood conduit in the heart lung bypass circuit. The section in the roller pump undergoes rigorous compression. Fatigue leads to material changes in weight and length of the bulk material. Particles are released during normal pump operation. This study evaluates the time course of particle loss. Three segments of 1/2" ID tubing run in the race...

Introduction: Complications due to retained gastric band tubing are rarely reported and frequently include disconnections of the tubing requiring operative revision. Obstruction from adjustable gastric band tubing is an infrequently reported event. Case Description: The patient presented to us 1 month after removal of a presumed isolated infected port performed at an outside facility. The wound...

The use of intravenous administration systems incorporating 3-mm internal diameter tubing is becoming more common in hospital practice. The maximum flow-rate of crystalloid solutions through 3-mm-diameter tubing is compared to that through conventional 4-mm tubing when connected to standard large-gauge intravenous cannulae. Lengths of intravenous tubing between 80 cm and 200 cm were tested in c...

Push-pull cannulae have been extensively employed for the in vivo perfusion of discrete brain regions and investigation of perfusate contents (Gaddum, 1961; Szerb, 1967; Yaksh and Yamamura, 1974; Errington et al., 1983). We wish to report a highly simplified and quick technique for the construction of push-pull cannulae. The outer barrel of the cannula consists of 24-gauge stainless-steel tubin...

BACKGROUND Accidental connection of an enteral system to an intravenous (IV) system frequently results in the death of the patient. Misconnections are commonly attributed to the presence of universal connectors found in the majority of patient care tubing systems. Universal connectors allow for tubing misconnections between physiologically incompatible systems. METHODS The purpose of this rev...

If plastic tubing is to be used in roller pumps for propelling blood in extracorporeal circulations under occlusive conditions spring loading the rollers and accurately setting the spring force is essential. Various types and sizes of plastic tubing are compared and their performance estimated; rubber tubing used for the same purpose has been tested. The optimum spring force has been determined...