Cardiology Emergency Medicine Moderate — Concordant ST elevation criterion has high specificity (~98%)
Sgarbossa Criteria for MI in LBBB
Identifies STEMI in the presence of left bundle branch block (LBBB) using 3 ECG criteria. Modified Sgarbossa uses proportional ST/S ratio ≥ 0.25 instead of absolute ≥1mm concordance.
References
- Sgarbossa EB, et al. Electrocardiographic diagnosis of evolving acute myocardial infarction in the presence of left bundle-branch block. N Engl J Med. 1996;334(8):481–487.
- Smith SW, et al. Diagnosis of ST-elevation myocardial infarction in the presence of left bundle branch block with the ST-elevation to S-wave ratio in a modified Sgarbossa rule. Ann Emerg Med. 2012;60(6):766–776.
Related
Curated clinical cross-links plus same-class fallbacks.
Calculators
- Duke Criteria for Infective Endocarditis · Diagnosis
- 2023 Duke-ISCVID Criteria for Infective Endocarditis · Diagnosis
- PASI — Psoriasis Area and Severity Index · Diagnosis
- DLQI — Dermatology Life Quality Index · Diagnosis
- Melanoma ABCDE Criteria · Diagnosis
- EASI — Eczema Area and Severity Index · Diagnosis
Drugs
Pathways
- Acute Heart Failure · ESC 2021 Heart Failure Guidelines; NICE NG106
- NSTEMI / Unstable Angina · ESC 2020 NSTEMI Guidelines; NICE NG185
- New-Onset Atrial Fibrillation · ESC 2020 AF Guidelines; NICE NG196
- Hypertensive Emergency · ESC/ESH 2018 Hypertension Guidelines; NICE NG136
- Bradycardia Management · Resuscitation Council UK ABCDE; ESC 2021 Pacing Guidelines
- Ventricular Tachycardia / Fibrillation · Resuscitation Council UK ACLS; ESC 2022 Ventricular Arrhythmia Guidelines
Decision support only — verify against MDCalc, NICE, or your local guideline before clinical use.