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Association of use of proton pump inhibitors and H2 antagonists with stomach wall uptake in 99mTc-methoxy-isobutyl-isonitrile (MIBI) myocardial perfusion imaging

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Journal of Nuclear Cardiology Aims and scope

Abstract

Background

Stomach wall uptake (SWU) of tracer in 99mTc-MIBI myocardial perfusion imaging (MPI) occasionally leads to imaging artifacts, thereby lowering the diagnostic accuracy. It is less-studied phenomenon for possible link with proton pump inhibitors (PPIs) intake. This prospective work looked for association of SWU with PPI intake and compared its incidence with H2 antagonists (H2A) users and patients not on either gastroprotective medication.

Methods

One hundred fifty-six patients undergoing one day stress/rest 99mTc-MIBI SPECT-MPI were distributed into four groups: control group (n = 48, not on any gastroprotective medication), PPI group (n = 47, on PPI treatment), H2A group (n = 19, on H2A therapy), and intervention group (N = 42, PPI discontinued for 3 days before MPI). Poststress planar images were analyzed for clinically relevant SWU.

Results

Clinically relevant SWU was seen in 36% of PPI group patients compared to 8% in the control group, 10.5% in the H2A group, and 9.5% in the intervention group, respectively, with statistically significant difference. Only 1/40 patients undergoing exercise stress showed clinically relevant SWU compared to 26/116 patients undergoing adenosine stress (P = .020).

Conclusion

Patients on PPIs scheduled for vasodilator stress MPI may discontinue PPIs for 3 days, or replace with H2A to reduce the incidence of clinically relevant SWU associated with PPI therapy.

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Abbreviations

MPI:

Myocardial perfusion imaging

CAD:

Coronary artery disease

MIBI:

Methoxy-isobutyl-isonitrile

SWU:

Stomach wall uptake

PPIs:

Proton pump inhibitors

H2A:

H2 antagonists

SPECT:

Single photon emission computed tomography

TMT:

Treadmill test

DM:

Diabetes mellitus

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Acknowledgment

The authors kindly acknowledge the invaluable inputs and guidance from Prof Inderjit Singh Anand, Cardiologist, Minneapolis, MN (USA) and Prof Suresh Kumar Sharma, Department of Statistics, Panjab University, Chandigarh (India).

Disclosure

Drs Harpreet Singh, Ashwani Sood, Bhagwant Rai Mittal, Neeraja Bollampally, Arun Kumar Reddy Gorla, Vaishnavi Dasagrandhi, Madan Parmar have nothing to disclose. No financial support was received for the publication of this manuscript.

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Singh, H., Mittal, B.R., Sood, A. et al. Association of use of proton pump inhibitors and H2 antagonists with stomach wall uptake in 99mTc-methoxy-isobutyl-isonitrile (MIBI) myocardial perfusion imaging. J. Nucl. Cardiol. 27, 1611–1619 (2020). https://doi.org/10.1007/s12350-019-01733-9

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