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No ST segment change was observed in any patient at the four times of the study.
Although some ST segment changes were recorded, these occurred equally within the two groups.
The ST segment represents the period when the ventricles are depolarized.
Depressed but upsloping ST segment generally rules out ischemia as a cause.
The normal ST segment has a slight upward concavity.
During periods of pain, depression or elevation of the ST segment may be observed.
Flat, downsloping, or depressed ST segments may indicate coronary ischemia.
Why males consistently developed ST segment depression following isoproterenol administration and females did not remains unanswered.
Particular rapid ST segment resolution occurred among those treated within the first hour of the onset of symptoms.
The ST segment shows when the ventricle is contracting but no electricity is flowing through it.
Alternatively, many emergency departments and chest pain centers use computers capable of continuous ST segment monitoring.
Those patients with ST segment depression would be people now regarded as having non-Q wave infarction.
The mortality rate in these patients with ST segment depression, both in the control and in the treated groups, is considered high at approximately 18%.
"Ethnic differences in the ST segment of the electrocardiogram: a comparative study among six ethnic groups.
His thesis was on beat-to-beat ST segment displacement assessment in Holter recordings.
Of the remaining 7 who did not have repeat coronary arteriography there was acute resolution of the ST segment elevation in 4.
It is associated with specific ECG changes (elevation rather than depression of the ST segment).
Exercise decreases ST segment elevation in some patients but increases it in others (after exercise when the body temperature has risen).
Firstly, leads which are showing problems (for example ST segment elevation) can be used to infer which region of the heart is affected.
The ST segment corresponds to a period of ventricle systolic depolarization, when the cardiac muscle is contracted.
Adrenergic stimulation decreases the ST segment elevation, while vagal stimulation worsens it.
This criterion is problematic, however, as acute myocardial infarction is not the most common cause of ST segment elevation in chest pain patients.
The ST segment usually appears as a straight, level line between the QRS complex and the T wave.
His major innovations related to ST segment variability analyses have given new impetus to improved quantitative analysis of noninvasive electrocardiographic recordings.
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