The edition · Cardiology
Dropping aspirin at primary PCI fails its noninferiority test, and transcatheter tricuspid repair produces an effect size that is hard to ignore
A Japanese randomised trial finds prasugrel monotherapy from the start of primary PCI does not meet noninferiority against dual antiplatelet therapy; transcatheter tricuspid repair cuts death or heart-failure hospitalisation at three years; routine CT coronary angiography after a ruled-out presentation changes nothing over three years; and a pooled analysis of 42,000 patients puts the optimal haemoglobin in heart failure well above the WHO anaemia threshold.
The edition in brief
In 2,216 patients with STEMI undergoing primary PCI in Japan, low-dose prasugrel monotherapy started before the procedure failed to meet noninferiority against 12 months of dual antiplatelet therapy for death, stroke or myocardial infarction (11.0% vs 8.5%; HR 1.34, 95% CI 1.02-1.75). Major bleeding was lower with monotherapy (5.6% vs 8.4%; HR 0.66, 95% CI 0.47-0.91). In TRIC-I-HF, 360 patients with symptomatic severe tricuspid regurgitation, mean age 80, were randomised 2:1 to transcatheter tricuspid repair plus medical therapy or medical therapy alone: win ratio 2.42 (95% CI 1.76-3.33) for the hierarchical primary endpoint, and freedom from death or heart-failure hospitalisation at three years of 52.4% versus 21.0% (HR 0.40, 95% CI 0.29-0.55). TARGET-CTCA randomised 3,170 UK emergency-department patients in whom myocardial infarction had been ruled out but high-sensitivity troponin exceeded 5 ng/L; CT coronary angiography-guided care did not reduce myocardial infarction or cardiac death over a median three years (7.1% vs 7.3%; adjusted HR 0.95, 95% CI 0.73-1.23). Pooled patient-level data from 11 heart-failure trials, 42,213 patients, located the lowest observed risk at haemoglobin around 14 g/dL in women and 15 g/dL in men, above the WHO anaemia thresholds, with excess risk even 0 to under 1 g/dL above them. The edition closes on BRIDGE, a cluster-randomised trial in which a protocol-based lipid pathway after acute coronary syndrome raised achievement of LDL-C under 70 mg/dL at six months from 73.7% to 86.4%.
Prasugrel monotherapy from the start of primary PCI does not meet noninferiority — aspirin stays
Keep aspirin on board at primary PCI — starting with a P2Y12 inhibitor alone failed noninferiority in a 2,216-patient trial.
Transcatheter tricuspid repair: freedom from death or heart-failure admission at three years, 52% versus 21%
Symptomatic severe tricuspid regurgitation in an older heart-failure patient is now a referral question, not an observation to record.
CT coronary angiography after a ruled-out presentation did not change outcomes over three years
A detectable troponin in a ruled-out patient should prompt risk-factor treatment, not an automatic CT coronary angiogram.
In heart failure, the best haemoglobin sits well above the threshold we call anaemia
A low-normal haemoglobin in heart failure deserves the same workup as anaemia — check iron studies rather than filing it as normal.
A detectable troponin that never met the infarct threshold is a result, not a non-result
Put the troponin number and a risk-factor plan in the discharge letter — 'not a myocardial infarction' on its own loses the information the test gave you.
A written lipid algorithm started in hospital moved LDL-C target achievement from 74% to 86%
Put the post-ACS lipid algorithm in writing, start it before discharge and book the four-week recheck — that alone raised target achievement by 12.6 percentage points.
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