Oesophageal injury following magnetically guided single-catheter ablation for atrial fibrillation: insights from the MAGNA-AF registry.

Aims: Oesophagogastroduodenoscopy (OGD) after catheter ablation (CA) of atrial fibrillation (AF) revealed a high rate of procedure related oesophageal lesions. We hypothesized that magnetically guided CA with careful radiofrequency energy titration at the posterior left atrial (LA) wall limits the incidence of oesophageal tissue damage.

Methods And Results: As a part of the prospective "Remote MAGNetic catheter Ablation for Atrial Fibrillation" (MAGNA-AF) registry, 251 out of 266 consecutive patients underwent OGD after magnetically guided single-CA for AF.

Modeling the pressure rise of a liquid target on a medical cyclotron: Steady-state analysis.

The steady-state behaviour of a liquid target used to produce medical isotopes by low-energy cyclotrons is studied. A model based on the conservation of mass and energy is proposed to describe the pressure rise of the target assuming equilibrium between liquid and vapour phases during irradiation. The effects of water radiolysis are taken into account.

[Prevalence of incidental findings of the Axial skeleton on computed tomograph of severely injured patients].

Computed tomography has become an important component in the initial assessment of severely injured patients over the last years. The liberal use coupled with advances in imaging technology often result in incidental findings. In our present investigation, the prevalence incidence of incidental findings of the spine and skull amounted to 58% of all patients with trauma.

Low tidal volume ventilation in a porcine model of acute lung injury improves cerebral tissue oxygenation.

Background: In study, we investigated the effects of different tidal volumes on cerebral tissue oxygenation and cerebral metabolism in a porcine model of acute lung injury (ALI). We hypothesized that mechanical ventilation with low tidal (LT) volumes improves cerebral tissue oxygenation and metabolism after experimentally induced ALI.

Methods: After inducing experimental ALI by surfactant depletion, we studied two conditions in 10 female pigs: 1) LT volume ventilation with 6 mL/kg body weight, and 2) high tidal (HT) volume ventilation with 12 mL/kg body weight.

The organisation of federal Veterinary Services in Canada: the Canadian Food Inspection Agency.

The organisational design of a national Veterinary Service is critical to the overall quality and integrity of its animal health and veterinary public health infrastructure. It is well recognised that the diversity of political, economic and social situations which exist in and between countries dictates that no one model of organisational structure can be applied to all circumstances. In Canada, a re-organisation of the approach of the federal government to food inspection in 1997 resulted in the transfer of the veterinary administration to a newly created agency called the Canadian Food Inspection Agency (CFIA).