I read with interest Irfan and colleagues’ case report
1
on purported coronary microvascular spasm and panic attack during a functional coronary
angiogram. The patient did not stop her calcium channel blocker on the day of procedure.
This could confound the procedure, i.e. blunting either coronary epicardial or microvascular
spasm if acetylcholine was given, which was not. Neither was adenosine administered.
How then was the coronary flow reserve (CFR) of 1.9 derived? CFR is a hyperaemic index
and this value suggests impaired vasodilatory capacity.To read this article in full you will need to make a payment
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References
Irfan, S., McCarthy, M. & Miner, S. Association Between Panic Attack and Coronary Ischemia Due to Reduction in Coronary Blood Flow. Can J Cardiol 39, 71-72 (2023). https://doi.org:10.1016/j.cjca.2022.09.005
McLaughlin, D. P., Wu, S. S. & Stouffer, G. A. in Cardiovascular Hemodynamics for the Clinician (ed G. A. Stouffer) Ch. 21, 233-224 (Blackwell Publishing, 2008).
Article info
Publication history
Accepted:
February 26,
2023
Received in revised form:
February 20,
2023
Received:
January 29,
2023
Publication stage
In Press Journal Pre-ProofFootnotes
Financial Support: None
Conflicts of interest: None
Identification
Copyright
© 2023 Published by Elsevier Inc. on behalf of the Canadian Cardiovascular Society.
