ST segment
International Journal of Arrhythmia
;
: 108-112, 2017.
Article
in Korean
| WPRIM
| ID: wpr-105553
ABSTRACT
The ST segment corresponds to the plateau phase of ventricular repolarization, i.e., phase 2 of the action potential. Heightened awareness of the characteristic patterns of ST segment changes is vital to quickly identifying life-threatening disorders. The differential diagnosis of ST segment elevation includes four major processes ST segment elevation myocardial infarction (STEMI); early repolarization; pericarditis; and ST elevation secondary to an abnormality of the QRS complex (left bundle branch block, left ventricular hypertrophy, or preexcitation). Other processes that may be associated with ST elevation include hyperkalemia, pulmonary embolism, and Brugada syndrome. Two particular patterns of ST segment depression reflect STEMI rather than non-ST-segment elevation acute coronary syndrome ST segment depression that is reciprocal to a subtle and sometimes overlooked ST-segment elevation, and ST segment depression that is maximal in leads V₁-V₃, suggesting true posterior infarction. The clinical setting and specific electrocardiographic criteria often allow identification of the cause.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Pericarditis
/
Pulmonary Embolism
/
Bundle-Branch Block
/
Action Potentials
/
Hypertrophy, Left Ventricular
/
Depression
/
Diagnosis, Differential
/
Electrocardiography
/
Brugada Syndrome
/
Acute Coronary Syndrome
Type of study:
Diagnostic study
/
Prognostic study
Language:
Korean
Journal:
International Journal of Arrhythmia
Year:
2017
Type:
Article
Similar
MEDLINE
...
LILACS
LIS