Journal of Nuclear Cardiology

, Volume 10, Issue 5, pp 464–472 | Cite as

Perioperative and long-term prognostic value of dipyridamole Tc-99m sestamibi myocardial tomography in patients evaluated for elective vascular surgery

  • Mylan C. Cohen
  • Andrea E. Siewers
  • John D. Dickens
  • Thomas Hill
  • James E. Muller
Article

Abstract

Background

Patients with peripheral vascular disease are at increased risk for perioperative and long-term cardiac morbidity and mortality. Substantial data exist supporting the use of preoperative clinical risk stratification and planar thallium myocardial scintigraphy. Only limited data are available assessing the role of technetium-99m (Tc-99m) single photon emission computed tomography (SPECT) for preoperative evaluation in this population.>/<

Methods and Results

In our study 153 patients who underwent peripheral vascular surgery were followed up for up to 4 years after preoperative dipyridamole Tc-99m sestamibi SPECT to determine clinical and SPECT predictors of perioperative and long-term adverse cardiac events by multivariate analysis. There were no statistically significant clinical or SPECT predictors of perioperative risk, although no perioperative events occurred in patients with normal scans. Abnormality in the left anterior descending (LAD) territory (risk ratio = 3.1; 95% confidence interval, 1.4–7.1) was the only statistically significant univariate predictor of long-term death or myocardial infarction. Only abnormality in the LAD territory appeared to improve model fit beyond clinical risk (risk ratio = 2.9; 95% confidence interval, 1.2–7.3; P = .02).>/<

Conclusions

Patients with normal preoperative scans have a low risk of perioperative cardiac events and may safely undergo peripheral vascular surgery without further coronary intervention. However, scan abnormality in the LAD distribution confers poor long-term prognosis, suggesting that patients with this finding before peripheral vascular surgery should receive aggressive medical therapy and possibly invasive intervention to improve long-term survival.>/<

Key Words

Peripheral vascular disease single photon emission computed tomography technetium 99m sestamibi left anterior descending territory 

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Copyright information

© American Society of Nuclear Cardiology 2003

Authors and Affiliations

  • Mylan C. Cohen
    • 1
    • 2
    • 3
    • 7
  • Andrea E. Siewers
    • 2
  • John D. Dickens
    • 2
  • Thomas Hill
    • 4
    • 5
  • James E. Muller
    • 6
  1. 1.Cardiology Division, Department of MedicineMaine Medical CenterPortland
  2. 2.Center for Outcomes Research, Department of MedicineMaine Medical CenterPortland
  3. 3.University of Vermont College of MedicineBurlington
  4. 4.Department of RadiologyHarvard Medical SchoolUSA
  5. 5.Beth Israel Deaconess Medical CenterHarvard Medical SchoolUSA
  6. 6.Cardiovascular Division, Department of MedicineMassachusetts General HospitalBoston
  7. 7.Maine Cardiology AssociatesPortland

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