The edition · Top Clinical Updates
Catheter ablation for atrial fibrillation did not beat a sham procedure on quality of life
PVI-SHAM-AF randomised 262 patients to ablation or a sham and found a between-group difference of 2.6 points on a 100-point quality-of-life scale, with the interval crossing zero. Separately, catheter-directed thrombolysis cut early deterioration tenfold in intermediate-high-risk pulmonary embolism, and the 0/1 hour troponin pathway proved safe without shortening a single emergency department stay.
The edition in brief
The headline finding is one every clinician should know, whatever they practise. PVI-SHAM-AF randomised 262 patients with symptomatic atrial fibrillation 2:1 to catheter ablation or a genuine sham procedure, double-blind, and measured quality of life at six months. Both groups improved substantially — ablation from 61.3 to 81.1, sham from 59.2 to 74.9 — and the difference between them was 2.6 points, with a confidence interval running from -2.7 to 8.0. Ablation is recommended in guidelines for symptom relief; this trial says most of that relief may be the procedure rather than the ablation. Against that, a clearly positive trial. PRAGUE-26 randomised 558 patients with intermediate-high-risk pulmonary embolism to catheter-directed thrombolysis plus anticoagulation or anticoagulation alone. The seven-day composite of death, recurrence or cardiorespiratory collapse occurred in 0.7% versus 6.8%, a relative risk of 0.10, driven mainly by decompensation. Clinically relevant bleeding was 4.6% against 5.0%, though two intracranial haemorrhages occurred in the thrombolysis arm and none in the control. Two useful negatives complete the day. Implementing the 0/1 hour high-sensitivity troponin pathway across 67,624 emergency presentations was non-inferior for 30-day death or infarction, and shortened the median stay by exactly zero minutes — the bottleneck is not the assay. And immediate ambulatory ECG monitoring after syncope, in 2,234 patients, did not reduce syncope episodes at one year. The American College of Physicians also published its position on the ethical use of AI at the point of care.
Ablation for atrial fibrillation was no better than a sham on the outcome it is prescribed for
In a double-blind sham-controlled trial, catheter ablation improved atrial fibrillation quality of life by 2.6 points more than a sham procedure, an interval that includes no difference at all.
Catheter-directed thrombolysis cut early deterioration tenfold in intermediate-high-risk pulmonary embolism
In intermediate-high-risk pulmonary embolism, catheter-directed thrombolysis reduced seven-day death, recurrence or cardiorespiratory collapse from 6.8% to 0.7%, with no excess of major bleeding but two intracranial haemorrhages against none.
The 0/1 hour troponin pathway was safe, and saved no time at all
Switching to the 0/1 hour troponin pathway was non-inferior for 30-day death or infarction and did not shorten emergency department stay by a single minute.
Immediate ambulatory ECG monitoring after syncope did not reduce further episodes
Immediate ambulatory ECG monitoring for unselected syncope did not reduce syncope episodes over a year, with an incidence rate ratio of 0.89 whose interval includes no effect.
No new regulatory action today; the ACP has published its position on AI at the bedside
Nothing new from the regulators; the ACP has set out three ethical guideposts for AI use at the point of care, framing disclosure and independent reasoning as the physician's responsibility.
When both arms improve, ask what the control arm received
When both arms of a trial improve on a subjective outcome, read the control arm's change first — it tells you how much of the treatment's apparent benefit belongs to the treatment.
Read the rest in the app
You have read your two free briefings this month. The app carries all 27 specialties, every morning, free — and this one is waiting in it.
Scan to keep reading on your phone. No account needed to start.
Tomorrow morning, before your first patient
One edition a day for top clinical updates, written by the desk, every claim tied to its paper. Six minutes.
Get the app — free