The Modified Sgarbossa's Criteria is a clinical calculator used for diagnosing myocardial infarction (MI) in patients with a pre-existing left bundle branch block (LBBB) or ventricular paced rhythm. This calculator is particularly useful in the emergency department setting where rapid diagnosis of MI is critical.
The Modified Sgarbossa's Criteria applies to patients presenting with chest pain or other symptoms suggestive of MI who have an ECG showing LBBB or a ventricular paced rhythm. These ECG patterns can make it difficult to diagnose MI using standard criteria, hence the need for the Modified Sgarbossa's Criteria.
The clinical utility of this calculator is to aid in the diagnosis of MI in this specific patient population, which can guide appropriate treatment and management decisions.
There are no specific exclusion criteria for the use of the Modified Sgarbossa's Criteria. However, it should be noted that this calculator is not intended to replace clinical judgment and should be used in conjunction with other clinical findings and diagnostic tests.
Reference
Stephen W Smith, Kenneth W Dodd, Timothy D Henry 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 Dec;60(6):766-76.
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