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A technique is described for recording the precordial electrocardiographic body surface map before and after exercise. The technique provides an extra dimension to the conventional exercise electrocardiogram because a measurement can be made of the area and severity of S-T segment changes that are projected onto the front of the chest. Sixteen lead isopotential surface maps were recorded before and after exercise in 109 patients with angina who subsequently underwent coronary arteriography. In addition, exercise electrocardiograms were obtained in 53 of these patients using three orthogonal leads and in all patients using a single chest unipolar chest lead. Precordial surface mapping after exercise was found to have a greater sensitivity (95 percent) than electrocardiography using either the orthogonal leads (68 percent) or a single chest lead (64 percent) (P less than 0.01). The specificity of the three techniques did not differ significantly (P greater than 0.05). The technique of precordial surface mapping after exercise improves the ability to diagnose coronary artery disease and can easily be applied to clinical practice.
K Fox, and
A Selwyn, and
J Shillingford
February 1983,
Danish medical bulletin,
K Fox, and
A Selwyn, and
J Shillingford
July 1983,
British medical journal (Clinical research ed.),
K Fox, and
A Selwyn, and
J Shillingford
November 1976,
Anesthesiology,
K Fox, and
A Selwyn, and
J Shillingford
January 1978,
Medecine interne,
K Fox, and
A Selwyn, and
J Shillingford
July 1949,
Southern medical journal,
K Fox, and
A Selwyn, and
J Shillingford
January 1979,
British medical journal,
K Fox, and
A Selwyn, and
J Shillingford
March 1952,
Annals of internal medicine,
K Fox, and
A Selwyn, and
J Shillingford
January 1993,
Cor et vasa,
K Fox, and
A Selwyn, and
J Shillingford
January 1992,
Terapevticheskii arkhiv,
K Fox, and
A Selwyn, and
J Shillingford
August 1975,
The New England journal of medicine,
