David Purkarthofer

@davidpurkarthofer.at

Emergency medicine & ultrasound. Graz, Austria & San Raffaele, Milan/Italy. I research resuscitation and teach POCUS. #FOAMed. Here to learn and share. davidpurkarthofer.at/publications

After ROSC, ST-elevation is a rather reliable sign of coronary occlusion - but not the only one. I was lucky to contribute to a study led by Claudio Silwanis & Thomas Lambert: in 214 post-ROSC patients, strict ST-elevation criteria caught 44% of angiographically confirmed coronary occlusions.

Graphical abstract, retrospective analysis of 214 patients after cardiac arrest. A donut chart of 101 patients with angiographically confirmed coronary occlusion shows 44% had a STEMI pattern (anterior 24%, inferior 17%) and 48% a non-ST-elevation occlusion (NST-OMI) pattern. The most frequent NST-OMI patterns, each with a schematic ECG sketch: left-main equivalent (8%), modified Sgarbossa (8%), Aslanger pattern (5%), posterior OMI, shark-fin sign and hyperacute T-wave (4% each). Key findings: NST-OMI patients not undergoing coronary angiography had the highest 30-day mortality (STEMI with angiography 34%, NST-OMI with angiography 35%, NST-OMI without angiography 75%). Longer PR-segment was associated with higher 30-day mortality (median 57 ms in survivors vs 74 ms in non-survivors).Screenshot of the article page in Resuscitation (Volume 228, November 2026, Open Access): "The post-ROSC ECG: morphological spectrum of non-ST-elevation occlusion and prognostic markers after cardiac arrest" by Claudio Silwanis, Thomas Lambert and 14 co-authors including David Purkarthofer. Highlights: A few ECG patterns account for most non-ST-elevation coronary occlusions. Left-main equivalent and Sgarbossa patterns are frequent OMI patterns. Longer PR-segment predicted lower 30-day survival. After cardiac arrest, occlusion often appears on ECG without ST-elevation. The first ECG after resuscitation informs both diagnosis and prognosis.

Physiology-guided CPR: targeted interventions, aiming for ill defined goals? Not news, but it emerged clearer than ever in the session at #RESUS26. A thread on why we can't trust the numbers our devices show us during CPR — and what it would take to fix that. 🧵

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Out now in Campbell Systematic Reviews, for anyone doing systematic or scoping reviews: deduplicate.it does preliminary deduplication and saves time. Returns a consolidated file + audit trail + PRISMA flowchart. 77–90% duplicates removed, 68–87% less time. Free, open source. doi.org/10.1177/1891...

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Already from last year - but never shared it: A prehospital lung ultrasound protocol built for providers who haven't scanned every day until now: time limits, standardised sequences, and a governance framework for training and QA. Implemented in an Austrian ambulance service. doi.org/10.1002/jum....

An Integrated Prehospital Point‐of‐Care Lung Ultrasound Protocol for Patients With Dyspnea

We present a time-efficient, clinically integrated lung ultrasound protocol tailored for prehospital use by providers not yet routinely using ultrasound. Specifically designed to support the recognit...

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