Adding local short description: "Feature of an electrocardiogram", overriding Wikidata description "the ST segment connects the QRS complex and the T wave and has a duration of 0.080 to 0.120 sec"
{{Short description|Feature of an electrocardiogram}}
[[Image:SinusRhythmLabels.svg|right|thumb|Schematic representation of normal [[Electrocardiography|ECG]]]]
[[Image:SinusRhythmLabels.svg|right|thumb|Schematic representation of normal [[Electrocardiography|ECG]]]]
In [[electrocardiography]], the '''ST segment''' connects the [[QRS complex]] and the [[T wave]] and has a duration of 0.005 to 0.150 sec (5 to 150 ms).
In [[electrocardiography]], the '''ST segment''' connects the [[QRS complex]] and the [[T wave]] and has a duration of 0.005 to 0.150 sec (5 to 150 ms).
It starts at the J point (junction between the QRS complex and ST segment) and ends at the beginning of the T wave. However, since it is usually difficult to determine exactly where the ST segment ends and the T wave begins, the relationship between the ST segment and T wave should be examined together. The typical ST segment duration is usually around 0.08 sec (80 ms). It should be essentially level with the PR and TP segments.
The ST segment represents the isoelectric period when the ventricles are in between depolarization and repolarization.
^Sabatine MS (2000). Pocket Medicine (Pocket Notebook). Lippincott Williams & Wilkins. ISBN0-7817-1649-7.
^"Reading an EKG". uab.edu. 2010-03-25. Archived from the original on 2010-03-25. Retrieved 2021-11-04.{{cite web}}: CS1 maint: unfit URL (link)
^Mansano, R. Z.; Beall, M. H.; Ross, M. G. (2007). "Fetal ST segment heart rate analysis in labor: Improvement of intervention criteria using interpolated base deficit". Journal of Maternal-Fetal and Neonatal Medicine. 20 (1): 47–52. doi:10.1080/14767050601055279. PMID17437199. S2CID10815181.
