## 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 ECGs timing/need, continuous monitoring/telemetry, cardiology notification pathways, triage for reperfusion when STEMI suspected) and explicit citations to ESC/AHA/ACC guidance — these guideline 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 for LV mass assessment — the rule file only flags "lvh_qrsd" = 1 but does not contain the descriptive claims about diagnostic performance or the echocardiography recommendation. (Evidence absent)

4. Explanatory claims about nonspecific intraventricular conduction delay (definition using cutoff near 110 ms and associations with adverse outcomes such as prior infarction, cardiomyopathy, fibrosis, and population-level outcome associations) — 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/features 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" as a guideline-based interpretation — QTc value (444) is present in feature.summary, but the sex‑specific cutoffs and torsades risk thresholds are not present in the source files. (Partial support: numeric QTc value is supported; guideline thresholds/explanatory claims are evidence-absent)

7. Management recommendations such as "consider transthoracic echocardiography to assess regional wall motion and left ventricular function," "evaluate for causes of bradycardia (medication review, vagal factors, ischemia) and monitor hemodynamics; consider telemetry if symptomatic," and "optimize blood‑pressure management and consider ambulatory follow‑up" — these clinical management suggestions are not present in series.json, feature.json, or rule.json. (Evidence absent)

Notes on content that is 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 referenced (e.g., V5 R amplitude ≈ 0.99 mV, V3 S ≈ -1.66 mV, limb lead II R ≈ 0.31–0.38 mV) — supported by lead-level volumes 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).