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Trimetazidine fails to improve angina symptoms and outcomes after PCI: Lancet
Trimetazidine is an antianginal agent that improves energy metabolism of the ischaemic myocardium and might improve outcomes and symptoms of patients who recently had a PCI.
Researchers have found in a new study that routine use of oral trimetazidine 35 mg twice daily over several years in patients receiving optimal medical therapy, after successful PCI, does not influence the recurrence of angina or the outcome in patients with chronic or acute coronary syndromes.These findings should be taken into account when considering the Prescription of trimetazidine in clinical practice.However it does not appear to be associated with any statistically significant safety concerns in the population studied.
The results of the ATPCI trial were presented in a Hot Line session today at ESC Congress 2020 and simultaneously published in the Lancet.
The researchers conducted the study to assess the long-term potential benefits and safety of trimetazidine added to standard evidence-based medical treatment in patients who had a recent successful PCI.
Angina refers to constricting pain or discomfort in the front of the chest or in the neck, jaw, shoulder, or arm due to reduced blood flow to the heart. It can occur during acute coronary syndromes (ACS) and chronic coronary syndromes (CCS).
PCI improves prognosis in acute patients and can alleviate symptoms in chronic patients who do not respond to medication. However, previous studies have shown that angina recurs in 30% of patients despite antianginal therapy and successful PCI. There are limited contemporary data on the prognostic benefits of antianginal drugs in post-PCI patients.
The randomised ATPCI trial investigated the impact of trimetazidine added to standard therapy after PCI. Unlike typical angina medications, which improve blood flow by relaxing and widening the blood vessels, trimetazidine protects against myocardial ischaemia by improving the heart's metabolism and favouring the use of glucose.
The trial enrolled 6,007 patients who had undergone successful PCI, either elective for stable angina (n=3,490) or urgent for unstable angina or non-ST-elevation myocardial infarction (n=2,517). Patients were randomly assigned to trimetazidine or placebo.
The primary efficacy endpoint was the composite of cardiac death; or hospitalisation for a cardiac event; or recurrent/persistent angina leading to adding, switching or increasing the dose of antianginal drugs or coronary angiography.
After a median follow-up of five years, the primary efficacy endpoint occurred in 700 (23.3%) patients in the trimetazidine group and 714 (23.7%) patients in the placebo group (p=0.7). There was no difference between groups in the rate of side effects.
Principal investigator Professor Roberto Ferrari of the University of Ferrara, Italy said: "The trial shows that trimetazidine does not improve outcomes or symptoms after successful PCI in patients with acute and chronic coronary syndromes."
References and notes
DOI: https://doi.org/10.1016/S0140-6736(20)31790-6
1Abstract title: EfficAcy and safety of Trimetazidine in patients with angina pectoris having been treated by Percutaneous Coronary Intervention.
Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751