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Catheter Ablation of Atrial Fibrillation

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Nuclear Cardiology Case: A 63-year-old man, known multivessel CAD. Evaluate the severity of ischemia

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A 63-year-old man, known multivessel CAD. To evaluate the severity of ischemia in this patient. SPECT myocardial perfusion testing was performed using Tc-99m-Sestamibi. Images representing myocardial perfusion were obtained at rest and peak stress .
  • Stress protocol is Treadmill / Bruce
  • Duration of stress is 12 min
  • Peak heart rate (85%) is 85 --> 150 (85%=133)
  • Systolic BP (basal --> peak) is 150 --> 160
  • Double product (peak rate x BP) is 24,000
  • Reason for termination is Dyspnea.
  • Typical chest pain
  • ECG finding is 1 mm ST depression 
Nuclear Cardiology Case Images

image
Figure 2 with labelled pathology for clarification

Subsequent Coronary Angiography: 

RCA - totally occluded, left to right collaterals
LAD - 50% proximal stenosis
LCX - 1st marginal branch - 70% stenosis ,1st diagonal branch - 70-80% distal stenosis
Left ventricular ejection fraction = 57%

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