• Carlo Nicola De Cecco
  • Marco Rengo
Part of the A-Z Notes in Radiological Practice and Reporting book series (AZRPR)

Acute Coronary Syndrome

  • Term used to describe a constellation of symptoms resulting from acute myocardial ischemia.

  • Two major groups: (1) ST elevation myocardial infarct (STEMI) and (2) non-ST elevation myocardial infarction (NSTEMI and unstable angina).

  • Treatments: (1) STEMI, reperfusion therapy; (2) NSTEMI, not treated with thrombolysis.


  • Vasodilator agent used in myocardial stress perfusion.

  • Most commonly used stress agent due to its ultrashort half-life (<10 s).

  • Dose: 140 μg/kg/min for 3–6 min.

  • Caffeine or other methylxanthines should be avoided for 24 h before the administration.

  • Contraindications: (1) high-grade AV block; (2) asthma or COPD; (3) sinus bradycardia; (4) systemic hypotension (BP < 90 mmHg); (5) severe carotid stenosis.

  • Side effects: transient heart block, transient hypotension, transient tachycardia, bronchospasm.

  • Antagonist: aminophylline, 50–100 mg over 1 min, injection can be repeated up to 250 mg total dose.

  • See also “ Perfusion imaging, myocardial”.



Aortic Valve Aortic Dissection Fabry Disease Left Ventricular Assist Device Bicuspid Aortic Valve 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Suggested Reading

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Copyright information

© Springer-Verlag Italia 2014

Authors and Affiliations

  • Carlo Nicola De Cecco
    • 1
    • 2
  • Marco Rengo
    • 1
  1. 1.Department of Radiological Sciences, Oncology and PathologySapienza University of Rome-Polo PontinoLatinaItaly
  2. 2.Department of Radiology and Radiological SciencesMedical University of South CarolinaCharlestonUSA

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