What question did this study set out to answer?

To evaluate hemodynamic outcomes and relief of left ventricular outflow obstruction before and after surgical intervention in patients with different forms of congenital fixed subvalvular aortic stenosis.

May 1, 1971Circulation

Congenital Fixed Subvalvular Aortic Stenosis

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Why the study?

Does operative intervention improve left ventricular outflow obstruction in patients with congenital fixed subvalvular aortic stenosis?

Key Points

To evaluate hemodynamic outcomes and relief of left ventricular outflow obstruction before and after surgical intervention in patients with different forms of congenital fixed subvalvular aortic stenosis.
Assessed pre- and postoperative clinical and hemodynamic status in 33 consecutive patients undergoing surgical repair for congenital fixed subvalvular aortic stenosis.
Patients with discrete subaortic stenosis achieved effective, low-risk relief of left ventricular outflow obstruction, though residual pressure gradients often persisted temporarily due to secondary hypertrophic obstruction that resolved over time.
Patients with tunnel subaortic stenosis and an intraventricular gradient experienced partial obstruction relief, whereas surgical intervention proved ineffective in tunnel cases with annular gradients and in stenosis secondary to mitral valve anomalies.

Structured PICO

Does operative intervention improve left ventricular outflow obstruction in patients with congenital fixed subvalvular aortic stenosis?

Population

33 consecutive patients with congenital fixed subvalvular aortic stenosis

Intervention

Operative intervention

Outcome

Relief of obstruction to left ventricular outflow and pressure gradientsurrogate

Operative intervention effectively relieves obstruction in discrete congenital subaortic stenosis but is ineffective for tunnel deformities with valve/annulus gradients or mitral valve anomalies.

Discussion

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Implication

May inform anatomic risk stratification before surgery; leaves open optimal approaches for tunnel and mitral anomalies.

Cite This Study

Reis et al. (1971) studied this question.

synapsesocial.com/papers/6a7be191351d91d38cc63b7b https://doi.org/10.1161/01.cir.43.5s1.i-11

Topics

Mitral valve intervention Hypertrophic cardiomyopathy

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Congenital Fixed Subvalvular Aortic Stenosis

Key Points

Structured PICO

Discussion

Implication

Cite This Study

Topics

Congenital Fixed Subvalvular Aortic Stenosis

Key Points

Structured PICO

Discussion

Implication

Cite This Study

Also Consider

Topics

Also Consider