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).

Gender constancy judgments in children with gender identity disorder: evidence for a developmental lag.

Gender constancy judgments in children referred for problems in their gender identity development (N = 206) and controls (N = 95) were compared. On Slaby and Frey's (1975) gender constancy interview, the gender-referred children performed more poorly than the controls at three stage levels: gender identity, gender stability, and gender consistency. On the Boy-Girl Identity Task, a second measure of gender constancy (Emmerich et al.

Radiation-induced superior vena cava syndrome.

A 59-year-old man developed superior vena caval obstruction 20 years after receiving a radiation treatment for primary germinal cell tumor of the mediastinum. Venous decompression was achieved by anastomosing a 10-mm ringed polytetrafluoroethylene graft from the left internal jugular vein to the right atrium, which yielded immediate relief of symptoms. A left internal jugular venogram demonstrated graft patency 11 months post-operatively, and the patient remained free of symptoms of superior vena caval obstruction 29 months postoperatively.

Sex-typed responses in the Rorschach protocols of children with gender identity disorder.

A coding system was developed to measure sex-typed responses in the Rorschach protocols of children with gender identity disorder (n = 79). Their responses were compared to that of sibling (n = 25), psychiatric (n = 26), and normal (n = 28) controls. Results show that children with gender identity disorder gave significantly more cross-sex responses than same-sex responses, whereas the psychiatric and normal controls gave significantly more same-sex responses than cross-sex responses.

Effects of neutral toys on sex-typed play in children with gender identity disorder.

This study assessed the relative influences of approach and avoidance behaviors toward same-sex and cross-sex toys in the play of children with gender identity disorder and in normal boys, normal girls, and psychiatric controls. Three forced-choice situations with toys and three forced-choice situations with dress-up apparel were presented that paired same-sex and cross-sex stimuli, same-sex and neutral stimuli, and cross-sex and neutral stimuli. In the same-sex/cross-sex situation, the gender-disordered group played a significantly shorter time with the same-sex stimuli and a significantly longer time with the cross-sex stimuli than the normal boys and the psychiatric controls, whereas the play patterns of the normal girls fell in between that of the gender-disordered group and the two control groups.

Two subgroups of gender-problem children.

Gender-referred children who met the DSM-III diagnostic criteria for gender identity disorder of childhood (n = 21) and gender-referred children who did not meet these criteria (n = 15) were compared with regard to demographic, gender role, and behavioral disturbance information. As judged by parental questionnaires and behavioral tests, the cross-gender role behavior of gender-referred children who met the DSM-III criteria was generally more extreme than that of their non-DSM-III counterparts. These two diagnostically defined subgroups did not, however, differ in the degree of their behavioral and emotional disturbance.

Human figure drawings of gender-problem children: a comparison to sibling, psychiatric, and normal controls.

The Draw-a-Person test was used to evaluate a number of questions regarding children referred for potential problems in their gender-identity development (N = 36). Sibling (N = 31), psychiatric (N = 23), and normal (N = 30) children served as comparison groups. The major results included the following: (1) The gender-referred children were more likely to draw an opposite-sex person when requested to "draw a person" than were the other three groups; (2) the gender-referred children who drew an opposite-sex person were more likely to play with opposite-sex toys and dress-up apparel on a free-play task than were the gender-referred children who drew a same-sex person; (3) the gender-referred children drew taller opposite-sex persons than same-sex persons; (4) using Koppitz's (1968) criteria, the normal children had a smaller proportion of emotional disturbance indicators in their same-sex drawings than did the other three groups.

Sex-typed play in gender-disturbed children: a comparison to sibling and psychiatric controls.

Gender-disturbed children (n = 14) were compared to their preadolescent siblings (n = 16) and psychiatric controls (n = 13) on a sex-typed free-play task previously shown to differentiate gender-disturbed boys from normal boys. On three separate trials totaling 20 minutes, the gender-disturbed children played for a significantly longer period of time with cross-sex toys and for a significantly shorter period of time with same-sex toys than did the two control groups. The gender-disturbed children also showed greater trial-to-trial consistency in their play preferences than the other two groups.

Patterns of intellectual functioning and spatial ability in boys and gender identity disorder.

Preadolescent boys with Gender Identity Disorder (N = 13), their brothers (N = 8) and boys referred for psychiatric assessment (N = 10) were administered age-appropriate Wechsler intelligence scales. Four hypotheses regarding patterns of intellectual functioning and spatial ability were tested. A previous suggestion that the development of boyhood femininity is associated with higher than average IQ was not supported, since the IQs of the feminine boys and their brothers did not differ.

Gender identity problems of children and adolescents: the establishment of a special clinic.

Theoretical accounts of the origins of gender identity disturbance are reviewed and then followed by a description of the establishment of a child and adolescent gender identity clinic. Clinical impressions of 16 gender disturbed patients are presented and the position is taken that most patients manifested a confused, as opposed to fixed, core gender identity.