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Predictors of viability in patients with negative low-dose dobutamine stress echocardiograph
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Predictors of viability in patients with negative low-dose dobutamine stress echocardiograph

Zainab Abdel-Salam et al. Wail Nammas

BACKGROUND: Low-dose dobutamine stress echocardiography is specific for predicting reversible contractility dysfunction, but its sensitivity is lower than ideal. OBJECTIVE: We sought to explore the predictors of myocardial contractile recovery following revascularization, in patients with no viability by low-dose dobutamine stress echocardiography. METHODS: We prospectively enrolled 30 consecutive patients with significant coronary stenosis/occlusion amenable for revascularization, regional wall motion abnormality in the distribution of the affected artery and absence of viability by low-dose dobutamine stress echocardiography. They underwent resting 99mTc-sestamibi imaging study, and then underwent successful coronary revascularization. Follow-up echocardiography was performed 3 months later. Patients were classified into 2 groups: group 1: with evidence of myocardial contractile recovery after revascularization at follow-up echocardiography and group 2: with no such evidence of recovery. The two groups were compared with respect to patients’ clinical, echocardiographic and scintigraphic data. RESULTS: The mean age was 52.3 ± 5.9 years, with 97% being males. The percentage of total 99mTc-sestamibi uptake was significantly higher in group 1 as compared to group 2 (p < 0.01), and it was the strongest independent predictor of myocardial contractile recovery at 3-month follow-up by multivariate regression analysis. Receiver operating characteristics curve revealed that a cutoff value of the percentage of total 99mTc-sestamibi uptake of 72% best predicted myocardial contractile recovery, with a sensitivity of 100% and specificity of 95.7%. CONCLUSION: In patients with no viability by low-dose dobutamine stress echocardiography, the percentage of total 99mTc-sestamibi uptake independently predicted myocardial contractile recovery following coronary revascularization.

  • dobutamine stress echocardiography
  • predictors
  • revascularization
  • viability
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Creative Commons Attribution (CC BY) Creative Commons license
21/01/2011 DOI: 10.1590/S0066-782X2011005000007 Views 1

How to cite this article

EndNote RIS

Electronic Document Format (Vancouver)

Abdel-Salam Z, Nammas W. Predictors of viability in patients with negative low-dose dobutamine stress echocardiograph. Arquivos Brasileiros de Cardiologia 2011;96(3):188-95.

Electronic Document Format (ABNT)

Abdel-Salam, Zainab; Nammas, Wail. Predictors of viability in patients with negative low-dose dobutamine stress echocardiograph. Arquivos Brasileiros de Cardiologia, v. 96, n. 3, p. 188-195, Jan. 2011.

Electronic Document Format (APA)

Abdel-Salam, Z., & Nammas, W. (2011). Predictors of viability in patients with negative low-dose dobutamine stress echocardiograph. Arquivos Brasileiros de Cardiologia, 96(3), 188-195.

Electronic Document Format (ISO)

Abdel-Salam, Zainab and Nammas, Wail. Predictors of viability in patients with negative low-dose dobutamine stress echocardiograph. Arquivos Brasileiros de Cardiologia [online]. 2011, vol. 96, n. 3, [cited 2026-10-14], pp. 188-195. Available from: <https://journals.cardiol.br/en/article/predictors-of-viability-in-patients-with-negative-low-dose-dobutamine-stress-echocardiograph/>. ISSN 0066-782X

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