What does concordant mean ECG?
Concordance exists when all the QRS complexes in the chest leads are either predominantly positive or predominantly negative. Concordance can be either positive or negative. The presence of concordance suggests that the tachycardia has a ventricular origin.
When is Sgarbossa criteria used?
The Sgarbossa criteria is used in the diagnosis of an acute myocardial infarction when a left bundle branch block is present.
What is concordant and discordant ECG?
The original three criteria used to diagnose infarction in patients with LBBB are: Concordant ST elevation > 1mm in leads with a positive QRS complex (score 5) Concordant ST depression > 1 mm in V1-V3 (score 3) Excessively discordant ST elevation > 5 mm in leads with a -ve QRS complex (score 2)
What does concordant ST elevation mean?
ST-elevation is “excessively discordant” when the ST-elevation (measured at the J-point) is > 0.25 or 25% the depth of the S-wave. ST-depression is “excessively discordant” when the ST-depression (measured at the J-point) is > 0.3 or 30% the height of the R-wave.
What is the meaning of concordant in English?
English Language Learners Definition of concordant : in agreement : having the same characteristics. See the full definition for concordant in the English Language Learners Dictionary. concordant. adjective. con·cor·dant | \ kən-ˈkȯrd-ᵊnt \
Can you use sgarbossa in Rbbb?
The criteria can be used in patients with Bundle Branch Block (BBB) and Paced Rhythm. GIven that LBBB is associated with a high mortality, any patient with chest pain and LBBB should be discussed with a senior Emergency Doctor and/or Cardiologist at an early stage.
What is positive and negative concordance?
Precordial concordance, also known as QRS concordance is when all precordial leads on an electrocardiogram are either positive (positive concordance) or negative (negative concordance).
Are there any changes to the Sgarbossa criteria?
As a result of this proportional amount of ST elevation present in patients with LBBB some authors have suggested that the original Sgarbossa Criteria be amended. A Modified Criteria could be based on the ratio between the S wave deflection and the corresponding ST elevation.
How is Sgarbossa used to diagnose heart disease?
The Sgarbossa and Modified Sgarbossa Criteria were applied according to previously published definitions 4, 5 ( Table S1 ). In each patient, we recorded clinical and anthropometric variables, laboratory tests, and electrocardiographic and angiographic data.
Who is Elena Sgarbossa and what does she do?
Elena Sgarbossa, MD, is a board certified cardiologist and works as an independent medical and scientific writer/editor/translator. She is also a member of Editorial Board of the Journal of Electrocardiology.
Can a person with mi be diagnosed without Sgarbossa?
In the final analysis MI was diagnosed in 26% without Sgarbossa Criteria and 86% with positive Sgarbossa Criteria They concluded that “ most patients with possible MI with new or presumably new LBBB do not have MI. Concordant ECG changes were an important predictor of MI and death.