Evidence-Grounding Review (Case 1)

Evidence-Grounding Review Result

Result: Ungrounded Statements Found (Evidence Absent)

Summary: Several statements and recommendations in the professional report are not grounded in the provided source files (series / feature / rule); they appear to be external guideline or explanatory content not present in the supplied data.

Ungrounded Statements (Evidence Absent)

1. Recommendation to use serial high-sensitivity cardiac troponin measurements and specific rapid serial algorithms (0/1 h or 0/2 h) and the claim that this recommendation is "supported by contemporary guideline recommendations (ESC and AHA/ACC)" — not present in series.json, feature.json, or rule.json (no guideline text or troponin data). (Evidence absent)
2. Multiple guideline-style recommendations (repeat ECG timing/need, continuous monitoring/telemetry, cardiology notification pathways, triage for reperfusion when STEMI suspected) and explicit citations to ESC/AHA/ACC guidance — these recommendations and citations are not included in the provided source files. (Evidence absent)
3. Statements about the sensitivity and specificity of LVH voltage criteria (Sokolow–Lyon and Cornell thresholds), their diagnostic performance, and the recommendation to correlate ECG LVH with echocardiography — the rule file only flags lvh_qrsd = 1 but does not contain these descriptive claims or the echocardiography recommendation. (Evidence absent)
4. Explanatory claims about nonspecific intraventricular conduction delay (definition using a cutoff near 110 ms and associations with adverse outcomes such as prior infarction, cardiomyopathy, fibrosis) — the rule file indicates nivcd_c = 1 but does not contain these explanatory/epidemiologic statements. (Evidence absent)
5. Teaching statements about ECG features of STEMI (contiguous convex ST elevation, hyperacute T waves, reciprocal changes) used as explanatory rationale — the rule/series/feature files do not contain these didactic descriptions. (Evidence absent)
6. Statements specifying QTc clinical thresholds (e.g., "QTc ≥ 450 ms in men and ≥ 460 ms in women; QTc ≥ 500 ms associated with higher torsades risk") and the judgment that "QTc reported at 444 ms is in the borderline range" — the QTc value (444) is present in feature.summary, but the sex-specific cutoffs and torsades risk thresholds are not. (Partial support: numeric QTc supported; guideline thresholds evidence-absent)
7. Management recommendations such as "consider transthoracic echocardiography to assess regional wall motion," "evaluate causes of bradycardia and monitor hemodynamics," and "optimize blood-pressure management" — not present in series.json, feature.json, or rule.json. (Evidence absent)

Content supported by the source files (not hallucinations)

• Heart rate 48 bpm, PR interval ~146 ms, QRS duration ~112 ms, QT 484 ms and QTc 444 ms, electrical axes (P ≈ -4°, R ≈ -12°, T ≈ 45°) — present in feature.summary.
• AI MI model (mi-v2) prob 0.334 with decision = 1 — present in series.json.
• Rule-based flags: sinus rhythm/bradycardia (sr_b = 1), anterior T-wave abnormality (twa_ant_c = 1), nonspecific intraventricular conduction delay (nivcd_c = 1), and LVH-related flag (lvh_qrsd = 1) — present in rule.json.
• Per-lead amplitude measurements (e.g., V5 R ≈ 0.99 mV, V3 S ≈ -1.66 mV, limb lead II R ≈ 0.31–0.38 mV) — supported by lead-level values in feature.json.

When guideline text, explanatory statements about diagnostic test performance, or management recommendations are asserted as "supported by guidelines" or used to justify actions, confirmation is required from the RAG / guideline source (not supplied).