Key result
Intracoronary adenosine produced a maximal hyperemic response comparable to papaverine (1.6 times resting velocity) with a faster time to peak effect (7.4 vs 26 sec).
Why the study?
Does intracoronary adenosine effectively and safely produce maximal hyperemia compared to intracoronary papaverine for the assessment of coronary flow reserve?
Observational (n=12)
Does intracoronary adenosine effectively and safely produce maximal hyperemia compared to intracoronary papaverine for the assessment of coronary flow reserve?
Intracoronary adenosine provides rapid and potent hyperemia for coronary flow reserve assessment, but unpredictable dosing requirements and bradyarrhythmia risk may limit its utility.
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Adenosine may enable faster hyperemia testing; leaves open arrhythmia risks and optimal dosing before wider adoption.
Zijlstra et al. (1988) conducted an observational in Patients undergoing percutaneous transluminal coronary angioplasty (n=12). Intracoronary adenosine vs. Intracoronary papaverine (12.5 mg) was evaluated on Hyperemic response (coronary blood flow velocity increase). Intracoronary adenosine produced a maximal hyperemic response comparable to papaverine (1.6 times resting velocity) with a faster time to peak effect (7.4 vs 26 sec).
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