24-hour BP in children with congenital central hypoventilation syndrome.

Objective: To study circadian BP patterns in patients with congenital central hypoventilation syndrome (CCHS).

Design: Case-control study.

Setting: Teaching hospital in Paris, France.

[Role of right-to-left atrial shunt in exercise tolerance of patients with Ebstein anomaly].

The aim of this study was to assess cardiorespiratory tolerance to exercise in children with non-operated, paucisymptomatic and untreated froms of Ebstein's anomaly. The authors undertook a prospective study in 11 children, mean age 9.6 years, who had lung function tests, cardiorespiratory exercise stress tests (bicycle ergometry N = 8, treadmill N = 3) and contrast echocardiography.

Cardiorespiratory exercise tolerance in asymptomatic children with Ebstein's anomaly.

The aim of the study was to evaluate cardiorespiratory exercise tolerance in asymptomatic children with Ebstein's anomaly. Eleven children with a mean age of 9.6 years were prospectively studied by spirometry, cardiopulmonary exercise testing (bicycle ergometer n = 8, treadmill test n = 3), and contrast echocardiography.

[Aptitude to physical effort in children with operated tetralogy of Fallot].

Background: Long-term follow-up of patients after total surgical correction of tetralogy of Fallot indicates that they have a smaller working capacity than controls, with an increased incidence of late onset complete heart block and sudden death. These abnormalities may be less frequent when surgery is undertaken at an early age.

Population And Methods: A cardio-pulmonary stress test was performed on 18 patients aged 8 to 20 years who had undergone correction of tetralogy of Fallot when they were 3 months to 7 years (mean age: 3 years).

[Aptitude for sports in case of congenital heart block. Apropos of a case].

Cardiorespiratory adaptation of congenital atrioventricular block is not well known. The authors present the case of a 20 year old patient with excellent muscular force and maximal aerobic capacity despite severe chronotropic insufficiency on exercise, the heart rate not exceeding 80/mn. This condition may be explained by increased peripheral oxygen uptake and an increased oxygen transport due to high hemoglobin level.