Pre-Admission Beta-Blocker Therapy and Outcomes in Cardiogenic Shock: Insights from the Altshock-2 Registry
Bibliographic record
Abstract
AIMS: We aimed to assess the impact of pre-admission beta-blocker (BB) therapy on the clinical characteristics, in-hospital treatment and outcomes of patients with cardiogenic shock (CS). METHODS: All patients enrolled in the multicentre prospective Altshock-2 registry since March 2020 with available data on pre-admission BB therapy were included. Clinical characteristics, in-hospital management, haemodynamic parameters and clinical outcomes were compared in patients with versus without BB therapy. The primary endpoint was in-hospital mortality. RESULTS: A total of 668 patients were included [median age 66 (56-74) years, male sex 76.5%]: 299 patients (44.8%) with and 369 patients (55.2%) without previous BB therapy. Patients receiving pre-admission BB therapy had more frequently heart failure-related CS (43.8% vs. 17.9%) and less frequently cardiac arrest at presentation (20.1% vs. 27.8%, P = 0.027). Levosimendan was used less frequently and dobutamine was used more frequently in patients with baseline BB therapy (P = 0.033 and P = 0.043, respectively). Differences in the early haemodynamic response to vasoactive drugs were observed between patients with and without previous BB therapy, with a significant impact of baseline BB on mean arterial pressure (MAP) response during norepinephrine infusion (P = 0.012) and with dobutamine having a reduced response in MAP and heart rate in patients receiving BBs before admission (P = 0.023 and P = 0.001, respectively). In-hospital mortality was not significantly different between the BB and no-BB groups (40% vs. 33.7%; adjusted odds ratio 1.32, 95% confidence interval 0.84-2.07, P = 0.224). Similarly, baseline BB therapy was not independently associated with 48 h mortality (12.7% vs. 14.6%; adjusted odds ratio 1.09, 95% confidence interval 0.64-1.87, P = 0.749). The lack of association between baseline BB therapy and mortality was also confirmed at inverse probability of treatment weighting-adjusted analysis. CONCLUSIONS: In a real-world, contemporary cohort of patients with CS, previous BB therapy influenced the haemodynamic response to vasoactive drugs, but it was not associated with in-hospital mortality.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".