conduit stenosis
Progressive narrowing of a surgically placed conduit connecting the right ventricle to the pulmonary arteries.
Full Definition
Conduit stenosis refers to the progressive narrowing of a valved or non-valved conduit placed between the right ventricle and pulmonary arteries during congenital heart surgery. Stenosis can occur at the proximal anastomosis, within the conduit itself, or at the distal anastomosis. Common causes include intimal proliferation, calcification, outgrowth of the conduit, and external compression. Conduit stenosis is a predictable long-term complication requiring periodic assessment and eventual replacement. The timing of conduit replacement depends on the degree of stenosis, right ventricular function, and patient symptoms. Both surgical and transcatheter interventions may be options for treatment.
Usage
Usage note: Specify location of stenosis and gradient measurements; distinguish from native valve stenosis.
In Context
- "Cardiac catheterization revealed severe conduit stenosis with a gradient of 60 mmHg across the pulmonary homograft." — Catheterization report
- "The patient underwent conduit replacement for progressive conduit stenosis 12 years after Rastelli operation." — Surgical indication