Key result
A retrospective review of 137 patients with cardiospasm was conducted to compare the Negus hydrostatic dilator and Heller's operation, though specific efficacy results are not reported in the abstract.
Population
137 patients with cardiospasm treated at Leeds between 1939 and August 1956 (74 women, 63 men).
Design
Case_series
Authors
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Adds no actionable data for cardiospasm management; leaves open comparative efficacy of Negus dilation versus Heller operation.
Observational (n=137)
No
This historical case series reviews the outcomes of 137 patients treated for cardiospasm to compare the efficacy of the Negus hydrostatic dilator versus Heller's operation.
Lawrance et al. (1959) conducted an observational in Cardiospasm (n=137). Heller's operation vs. Negus hydrostatic dilator was evaluated. A retrospective review of 137 patients with cardiospasm was conducted to compare the Negus hydrostatic dilator and Heller's operation, though specific efficacy results are not reported in the abstract.