INTRODUCTION Adequate blood oxygenation and ventilation/perfusion matching should be main goal of anaesthetic and intensive care management. At present, one of the methods of improving gas exchange restricted by ventilation/perfusion mismatching is independent ventilation with two ventilators. Recently, however, a unique device has been developed, enabling ventilation of independent lungs in 1:...

In most Atomic Force Microscopes (AFM), a piezoelectric tube scanner is used to position the sample underneath the measurement probe. Oscillations stemming from the weakly damped resonances of the tube scanner are a major source of image distortion, putting a limitation on the achievable imaging speed. This paper demonstrates active damping of these oscillations in multiple scanning axes withou...

BACKGROUND The placement of nasal or oral gastric tubes is one of the most frequently performed procedures in critically ill children; tube malposition, particularly in the trachea, is an important complication. Neurally adjusted ventilatory assist (NAVA) ventilation (available only on the Servo-i ventilator, Maquet Critical Care, Solna, Sweden) requires a proprietary-design catheter (Maquet Cr...

INTRODUCTION A case of massive facial edema and airway obstruction secondary to an acute sialadenitis is described that occurred a few hours after a neurosurgical procedure performed in the prone position. Literature on this topic is reviewed. CASE PRESENTATION A 73-year-old Caucasian woman underwent a right parieto-occipital craniotomy to remove a meningioma. The procedure was performed in t...

PURPOSE One of the great challenges in surgical tendon rupture repair is to minimize peritendinous adhesions. In order to reduce adhesion formation, a physical barrier was applied to a sutured rabbit Achilles tendon, with two different immobilization protocols used postoperatively. METHODS Thirty New Zealand white rabbits received a laceration on the Achilles tendon, sutured with a 4-strand B...

Patients, methods, and results Over two years 30 patients were referred to this unit for the management of variceal bleeding with a balloon in position. Technical factors that we considered important for controlling bleeding were for the gastric balloon to be positioned close to the gastro-oesophageal junction and for it to be adequately inflated (in excess of 100 ml). Factors that we believed ...

To the Editor: We would like to report the use of fibreoptic endoscopy as a method for evaluating vocal cord function following surgical procedures that could injure their innervation. A 45-yr-old woman underwent resection of the thyroid isthmus and right thyroid lobectomy. Anaesthesia and surgery were uneventful but the surgeon requested that vocal cord function be evaluated laryngoscopically ...

Buried pipe leakage can lead to poor heat transfer performance and even system failure. Leakage analysis of buried tube greatly affects the operation condition diagnosis for exchange in tube. In this study, simulation software was applied analyzing process efficiency pipes under different conditions. Moreover, changes outlet temperature, water pressure flow rate were simulated at positions dive...

Plate fin-tube heat exchangers are widely used in air conditioning and refrigeration systems other industry fields. Various errors made the manufacturing process can result formation of an gap between tube fin. Several numerical simulations were carried out for a symmetric section plate exchanger to study influence on transfer under periodic flow conditions. Different locations sizes spanning 1...

Material and methods Ten male volunteers without a history of abnormal gastric function, fasted for 10 hr overnight. A nasogastric tube was then passed and the resting juice aspirated. A 200 ml wash of water was instilled down the tube and immediately aspirated to check that the stomach was free of food debris and the tube was in the correct position. Gastric juice was then collected for a peri...