When monitoring ST segments, what is a significant change to track?

• A. Flatline readings in rhythm
• B. Depression or elevation indicative of ischemia or infarction
• C. Increased heart rate only
• D. P wave duration variations

Answer: (B)

Monitoring ST segments is critical in assessing a patient’s cardiac condition, particularly in identifying ischemia and infarction. A significant change to track is the depression or elevation of the ST segment.

When the ST segment is elevated, it can indicate a significant issue such as an ST-elevation myocardial infarction (STEMI), which is a type of heart attack that requires immediate intervention. Conversely, ST segment depression can suggest ischemia, meaning that the heart muscle is not getting enough blood, typically due to blockages or a reduced blood supply.

Recognizing these changes in the ST segment is vital for the Telemetry Monitor Technician, as they are essential metrics in the ongoing assessment of a patient’s heart health and can guide necessary medical interventions. Being able to identify and respond to these significant changes can be life-saving, making it a cornerstone of cardiac monitoring.

In contrast, flatline readings in rhythm indicate a loss of electrical activity, which is a different concern. Increased heart rate alone may not reflect the underlying issues present in the ST segment, and P wave duration variations are more related to atrial activity rather than the critical changes in the ST segment that signify myocardial distress.