Viktor Björk

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Lung function was evaluated in 68 patients 13 to 26 (median 19) years after repair of tetralogy of Fallot. Age at repair was 7 years (9 months to 42 years) and 51% had a palliative shunt. An outflow patch was inserted in 56%. Median vital capacity was 84% of predicted, forced expiratory volume in 1 second 83%, maximal voluntary ventilation at 40 breaths/min(More)
Exercise tests and cardiac catheterization were performed in 53 patients, 13 to 26 years after intracardiac repair of tetralogy of Fallot. At the time of repair, the median age was 7 years, and 60% of patients with cyanosis had had a previous palliative procedure. The right ventriculotomy was closed without a patch in 21 patients (40%), a patch restricted(More)
Previously reported methods for the correction of tricuspid atresia involve the use of conduits and/or valves. Since many of the younger patients will outgrow their conduits and the long-term durability of the valve prostheses is open to question, we have devised an operation in which the right atrial (RA) appendage is anastomosed to the right ventricle(More)
The early production series of the 29 to 31 mm 70-degree convexo-concave (CC70) Björk-Shiley heart valves constitutes a subgroup of CC70 values with an extra high risk of outlet strut fracture. The hazard function for mechanical failure among these valves has remained almost constant over a 7-year follow-up period, and the 7-year actuarial incidence of(More)
Longterm follow-up of 17 children, who consecutively underwent replacement of one cardiac valve with the Björk-Shiley prosthesis, is presented. The children's mean age was 8 years (range 4-12 years) and body weight 23.5 kg (range 15.0-38.4 kg) at the time of surgery 1970-80. Nine of the 17 operations (53%) were second-stage cardiac surgery. The operations(More)
Gibbon's rotating cylinder could not be enlarged to oxygenate an animal larger than a cat. The spinning disc oxygenator, introduced in 1947, had the capacity to perfuse a dog and the potential to increase oxygenation capacity by addition of more discs. When centers began to do three to four open-heart operations per day, the disposable bubble oxygenator was(More)