Key result
Provoked coronary spasm after AMI stenting shows no association with major cardiac events.
Why the study?
The relationship between coronary spasm and stent implantation after AMI and its clinical implications remain unknown.
What is the incidence and clinical implication of provoked coronary spasm after stent implantation in patients with AMI?
Population
57 patients with ST elevation AMI after stent implantation
Comparison
Patients with provoked coronary spasm vs patients without provoked coronary spasm
Design
Cohort study with provocation test for coronary spasm
Follow-up
Average 35.0±26.9 months
Authors
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Provoked spasm common after AMI stenting yet unlinked to events; leaves open whether routine testing or calcium channel blockers alter prognosis.
Cohort (n=57)
What is the incidence and clinical implication of provoked coronary spasm after stent implantation in patients with AMI?
p-value: p=0.314
Coronary spasm is frequently provoked after stent implantation in AMI patients, and treatment with calcium channel blockers in these patients may result in similar clinical outcomes to those without spasm.
Katoh et al. (2012) conducted a cohort in ST elevation acute myocardial infarction (AMI) (n=57). Provoked coronary spasm vs. No provoked coronary spasm was evaluated on Major cardiac events (p=0.314). Provoked coronary spasm occurred in 70.2% of patients after stent implantation for AMI, with no significant difference in major cardiac events between the spasm and nonspasm groups (P=0.314).
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