Population
Patients with Fallot's tetralogy or pulmonary stenosis with a closed ventricular septum
Design
Other
Authors
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May limit closed transventricular valvotomy use; leaves open need for techniques ensuring complete relief.
Early experience with closed transventricular pulmonary valvotomy demonstrated that complete relief of stenosis was not always achievable, prompting investigation into the underlying causes.
Alan M. Johnson (1959) studied this question.
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