Abstract
Patients with functional cardiac disturbances, including chest pain, may present electrocardiographic abnormalities (pronounced RS-T depressions and T-wave inversions) after the "2-step" exercise test which are indistinguishable from those found in organic heart disease. Ergotamine tartrate was employed intravenously in conjunction with "2-step" tests in 10 cases for the objective differentiation of functional from organic heart involvement. However, ergotamine was found to be contraindicated as a routine for this purpose because of its anginal-provoking properties. We have substituted dihydroergecornine (DHO-180), a newer, safer ergot alkaloid, in our further investigation of this problem.
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