Leukopheresis therapy for severe infantile pertussis with myocardial and pulmonary failure.

Objective: To describe an infant with severe pertussis successfully treated with leukopheresis.

Design: Case report.

Setting: Pediatric intensive care unit of a children's hospital.

Extra corporeal membrane oxygenation and plasmapheresis for pulmonary hemorrhage in microscopic polyangiitis.

Early initiation of extracorporeal membrane oxygenation to treat acute hypoxemic respiratory failure secondary to massive pulmonary hemorrhage in microscopic polyangiitis in children can be life-saving while awaiting control of the autoimmune disease process by plasmapheresis and immunosuppression.

Aortic "recoarctation" at rest versus at exercise in children as evaluated by stress Doppler echocardiography after a "good" operative result.

The mechanism for exercise systolic hypertension after a "good" operative repair of coarctation of the aorta remains speculative. Twenty-four children (mean age +/- SD 10.3 +/- 3.

Discrepancies in aortic growth explain aortic arch gradients during exercise.

Objectives: This study was conducted to evaluate the incidence and etiology of hypertension and aortic arch gradients during exercise in patients who have apparent good coarctation repair assessed at rest.

Background: The reported incidence of recurrent aortic arch obstruction (rest gradient > 20 mm Hg) after previous successful surgical repair varies from 0% to 60% and usually is associated with recurrent stenosis at the site of surgical repair.

Methods: Maximal treadmill exercise with Doppler echocardiographic gradient estimation was performed in 28 patients with a good coarctation repair at rest (normal blood pressure and arch gradient < 20 mm Hg) who had isolated coarctation repair a mean of 7.