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Comparison of hemodynamic and stress testing variables in patients undergoing regadenoson stress myocardial perfusion imaging to regadenoson with adjunctive low-level exercise myocardial perfusion imaging

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Journal of Nuclear Cardiology Aims and scope

Abstract

Background

Regadenoson (REG), a selective adenosine A2a receptor agonist, is becoming the preferred pharmacologic agent for stress myocardial perfusion imaging (MPI). Hemodynamic and stress variables, immediate safety and use of aminophylline when using REG combined with low-level exercise (REG WALK MPI) compared with REG MPI, have not been well studied and formed the basis of our study.

Methods

Retrospective evaluation of patients who underwent REG MPI (n = 887) was compared to patients undergoing REG WALK MPI (n = 485) from January to November 2009. Patient demographics, hemodynamic parameters, REG MPI data, side effects, immediate major clinical events, and use of aminophylline were evaluated.

Results

Patients in REG WALK MPI group tended to be younger, male and obese compared to patients in REG MPI group. REG WALK MPI patients had higher stress heart rate (103 ± 20.5 vs 84 ± 19 bpm, P = .001), higher heart rate reserve (36.3 ± 19 vs 14.7 ± 15.5 bpm, P < .001), and greater systolic blood pressure rise (4.8 ± 21.3 vs −8.9 ± 19.8 mm Hg, P < .001), compared to REG MPI patients. No major adverse events were reported immediately after REG WALK MPI. There were no differences in drug-related side effects in between the two groups; however, the use of aminophylline was lower in REG WALK MPI Group (5.6% vs 11.4%, P = .001).

Conclusion

REG WALK MPI gives more favorable hemodynamic response with lesser use of aminophylline and no increase in adverse events when compared with REG MPI.

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Acknowledgments

The authors thank Nandita Mani, BLIS, Sladen Library Henry Ford Hospital, for her expert assistance in manuscript preparation.

Disclosures

Research grant support/Speakers Bureau: Astellas Pharma US Inc (KA), Lantheus Medical Imaging.

Author information

Author notes

  1. Zehra Husain MD

    Present address: Division of Cardiology, St Joseph Mercy Oakland Hospital, Pontiac, MI, USA

  2. Gurunanthan Palani MD

    Present address: Department of Internal Medicine, Mclaren Regional General Hospital, Flint, MI, USA

Authors and Affiliations

  1. Department of Internal Medicine, Heart and Vascular Institute, Henry Ford Hospital, K-14, Detroit, MI, 48202, USA

    Rafael Cabrera MD, Zehra Husain MD, Gurunanthan Palani MD, Aarthee S. Karthikeyan BS, Zain Choudhry BS, Sunita Dhanalakota MD, Ed. Peterson PhD & Karthik Ananthasubramaniam MD, FACC, FASE, FASNC, FRCP (Glas)

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  1. Rafael Cabrera MD
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  8. Karthik Ananthasubramaniam MD, FACC, FASE, FASNC, FRCP (Glas)
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Corresponding author

Correspondence to Karthik Ananthasubramaniam MD, FACC, FASE, FASNC, FRCP (Glas).

Additional information

See related article, doi:10.1007/s12350-013-9695-1.10.1007/s12350-013-9695-1

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Cabrera, R., Husain, Z., Palani, G. et al. Comparison of hemodynamic and stress testing variables in patients undergoing regadenoson stress myocardial perfusion imaging to regadenoson with adjunctive low-level exercise myocardial perfusion imaging. J. Nucl. Cardiol. 20, 336–343 (2013). https://doi.org/10.1007/s12350-012-9671-1

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  • DOI: https://doi.org/10.1007/s12350-012-9671-1

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