[The aortocaval fistula, a rare complication of an aneurysm of the abdominal aorta].

Four patients, 3 men aged 73, 60 and 81 years with hemodynamic instability and 1 man aged 80 with abdominal symptoms and breathlessness appeared to have an arteriovenous fistula secondary to spontaneous rupture of an atherosclerotic aneurysm: between the aorta and the V. cava inferior or between the A. and the left V.

[Boerhaave's syndrome: also in the emergency room].

Two men, aged 52 and 57 years, had vomited and then developed chest pain, dyspnoea and tachypnoea. After a myocardial infarction had been excluded in the cardiac emergency room, further examination revealed a rupture of the oesophagus. This was treated surgically with the ultimate creation of a tubular stomach.

Hemodynamic effects of dynamic exercise in children and adolescents with moderate-to-small ventricular septal defects.

We studied the hemodynamic effects of dynamic exercise during cardiac catheterization in 35 children and adolescents with small-to-moderate ventricular septal defects. Eighteen of them exercised at 25% and 50% of their maximum workload and 17 exercised at 60%. There was no significant difference between the two groups with respect to age and body mass, height, and surface area.