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Facchin D, Slavich GA, Fresco C, et al. Il valore diagnostico delle modificazioni dell'onda Q durante test ergometrico. Revisione della letteratura ed esperienza personale. [Diagnostic value of Q wave changes during the exercise test. Review of the literature and personal experience]. Minerva Cardioangiol. 1989;37(6):273-9
Facchin, D., Slavich, G. A., Fresco, C., Sindici, M. G., Tuniz, D., & Feruglio, G. A. (1989). Il valore diagnostico delle modificazioni dell'onda Q durante test ergometrico. Revisione della letteratura ed esperienza personale. [Diagnostic value of Q wave changes during the exercise test. Review of the literature and personal experience]. Minerva cardioangiologica, 37(6), 273-9.
Facchin, D, et al. "Il valore diagnostico delle modificazioni dell'onda Q durante test ergometrico. Revisione della letteratura ed esperienza personale." [Diagnostic value of Q wave changes during the exercise test. Review of the literature and personal experience]. Minerva cardioangiologica vol. 37,6 (1989): 273-9.
Facchin D, Slavich GA, Fresco C, Sindici MG, Tuniz D, Feruglio GA. Il valore diagnostico delle modificazioni dell'onda Q durante test ergometrico. Revisione della letteratura ed esperienza personale. [Diagnostic value of Q wave changes during the exercise test. Review of the literature and personal experience]. Minerva Cardioangiol. 1989 Jun;37(6):273-9. Italian. PMID: 2682360.
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Minerva Cardioangiol. 1989 Jun;37(6):273-9.

[Diagnostic value of Q wave changes during the exercise test. Review of the literature and personal experience].

Minerva cardioangiologica

[Article in Italian]
D Facchin, G A Slavich, C Fresco, M G Sindici, D Tuniz, G A Feruglio

PMID: 2682360

Abstract

UNLABELLED: To test if a low Q wave voltage and its faulty increase after exercise is an additional sign of myocardial ischemia, 64 pts with no previous myocardial infarction, bundle branch block or left ventricular hypertrophy were studied by a treadmill test and coronary angiography. Nineteen had single vessel disease (SVD), 21 double vessel disease (DVD), 4 triple vessel disease (TVD) and 20 normal coronary arteries. Sensitivity (SENS), specificity (SPEC) and predictive value (P) of Q wave changes have resulted as follows: 84%, 55%, 80.4%, respectively, compared to 79.5%, 75%, 87.5% of ST modifications associated or not with angina. The SENS of Q wave changes was 72% in SVD and 92% in multivessel disease (p less than 0.05). In 68% of our pts ST and Q wave changes gave concordant results and their combination increased SENS, SPEC, PV to 90.1%, 80%, 90.3%.

IN CONCLUSION: Q wave analysis can provide further evidence of myocardial ischemia and can increase SENS, SPEC of stress test. In our experience Q wave is a more sensitive finding than ST depression in multivessel disease.

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