On this Wikipedia the language st louis style ribs are at the top of the page across from the article title. Look up ST, St, st, . Summa Theologica, a compendium of Catholic philosophy and theology by St.

Prefix of hard disk drives made by Seagate Technology, e. If an internal link led you here, you may wish to change the link to point directly to the intended article. On this Wikipedia the language links are at the top of the page across from the article title. In electrocardiography, the ST segment connects the QRS complex and the T wave and has a duration of 0. 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.

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. The normal ST segment has a slight upward concavity. Flat, downsloping, or depressed ST segments may indicate coronary ischemia. ST elevation may indicate transmural myocardial infarction.

1mm and longer than 80 milliseconds following the J-point. ST depression may be associated with subendocardial myocardial infarction, hypokalemia, or digitalis toxicity. Archived from the original on 2010-03-25. Fetal ST segment heart rate analysis in labor: Improvement of intervention criteria using interpolated base deficit”.