Copyright © 2004 by the European Society of Cardiology.
Clinical research
Safety and feasibility of high-dose dobutamine-atropine stress cardiovascular magnetic resonance for diagnosis of myocardial ischaemia: experience in 1000 consecutive cases
a Cardiology, German Heart Institute Berlin, Augustenburger Platz 1, D-13353 Berlin, Germany
b Cardiology, Swiss Cardiovascular Center, Bern, Switzerland
c Cardiology, Heart Center Osnabrueck-Bad, Rothenfelde, Germany
Received June 5, 2003;
revised November 19, 2003;
accepted November 27, 2003
* Corresponding author. Tel.: +49-30-4593-2400; fax: +49-30-4593-2500
E-mail address: eike.nagel{at}dhzb.de
See page 1183 for the editorial comment on this article.1
Aims To determine the safety of high-dose dobutamine-atropine stress cardiovascular magnetic resonance (stress-CMR), which recently emerged as a highly accurate modality for diagnosis of inducible myocardial ischaemia.
Method and results From 1997 to 2002, 1000 consecutive stress-CMR examinations were performed. Images were acquired at rest and during a high-dose dobutamine-atropine protocol in 3 short-axis, a 4- and a 2-chamber view. Stress testing was discontinued when 
85% of age-predicted heart rate was reached, on patient request, maximum pharmacologic infusion, or when new or worsening wall motion abnormalities, severe angina, dyspnoea, increase or decrease in blood pressure, or severe arrhythmias occurred. Stress-CMR was successfully performed in all but four patients (0.4%; insufficient ECG-triggering). Target heart rate was not reached in 95 cases (9.5%), due to maximum pharmacologic infusion in submaximal negative examinations in 21 cases (2.1%), and limiting side effects in 74 (7.4%). Side effects included one case (0.1%) of sustained and four cases (0.4%) of non-sustained ventricular tachycardia, 16 cases (1.6%) of atrial fibrillation, and two cases (0.2%) of transient second degree AV block.
Conclusion The safety profile of stress-CMR is similar to other methodologies using dobutamine infusions. Patients must be closely monitored, and resuscitation equipment and trained personnel must be available.
Key Words: Safety • Feasibility • Stress testing • Coronary artery disease • Ischaemia • Magnetic resonance imaging
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