Abnormalities of early depolarization in patients with remote anterior myocardial infarction and ventricular septal hypoperfusion. Diagnosis of septal MI by BSM

Journal Article · Mon Oct 01 00:00:00 EDT 1990 · Journal of Electrocardiology; (USA)

DOI:https://doi.org/10.1016/0022-0736(90)90120-Q· OSTI ID:6273262

Kubota, I; Yamaki, M; Ikeda, K; Yamaguchi, I; Tonooka, I; Tsuiki, K; Yasui, S ^[1]

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1. Yamagata Univ. School of Medicine (Japan)

The authors conducted this study to find the difference in body surface isopotential maps in 46 patients with previous anterior infarction with and without septal involvement. Thallium-201 myocardial-perfusion imaging identified 25 patients with septal infarction (group P) and 21 without (group N). In contrast to group N, group P had a prominent minimum on the anterior chest during the early phases of the QRS. According to the results obtained, the following criteria for identifying patients with septal infarction (group P) were proposed (1). Criterion 1: The absolute value of the voltage of the minimum is equal to or greater than that of the maximum at 5 ms after the onset of the QRS; (2) Criterion 2: During the early portion of the QRS the voltage of the minimum reaches -0.10 mV at the same time or earlier than the maximum reaches 0.10 mV. Both criteria had higher sensitivities (100% and 100%), specificities (71.4% and 90.5%), and predictive accuracies (87.0% and 95.7%) than either Franklead vectorcardiograms or standard 12-lead electrocardiograms in the study population. Thus, body surface isopotential mapping is considered to be useful for the diagnosis of septal involvement in patients with previous anterior myocardial infarction.

• OSTI ID: 6273262
• Journal Information: Journal of Electrocardiology; (USA), Vol. 23:4; ISSN 0022-0736
• Country of Publication: United States
• Language: English

Related Subjects

62 RADIOLOGY AND NUCLEAR MEDICINE
HEART
IMAGE PROCESSING
MYOCARDIAL INFARCTION
DIAGNOSIS
ACCURACY
ALGORITHMS
ELECTROCARDIOGRAMS
EXERCISE
PATIENTS
SENSITIVITY ANALYSIS
THALLIUM 201
BETA DECAY RADIOISOTOPES
BODY
CARDIOVASCULAR DISEASES
CARDIOVASCULAR SYSTEM
DAYS LIVING RADIOISOTOPES
DIAGRAMS
DISEASES
ELECTRON CAPTURE RADIOISOTOPES
HEAVY NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MATHEMATICAL LOGIC
NUCLEI
ODD-EVEN NUCLEI
ORGANS
PROCESSING
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
THALLIUM ISOTOPES
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