Tag Archives: data quality

66 year old female CC: Chest pressure – Conclusion

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This is the conclusion to 66 year old female CC: Chest pressure. Let’s take another look at the 12-lead ECG. Let’s break this down 3 leads at a time starting with leads I, II and III. When you have artifact in a particular cardiac cycle you need to make a conscious effort not to let […]

63 year old male CC: Syncope – Conclusion

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Here is the conlcusion to 63 year old male CC: Syncope. First, let’s take another look at the 12-lead ECG. This 12-lead ECG shows poor data quality. This is a problem because the ECG is abnormal and suspicious for acute anterior STEMI. We need to consider whether or not this could be benign early repolarization […]

72 year old male CC: "Unknown problem" – Conclusion

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Here is the conclusion to 72 year old male CC: Unknown problem (man down) Here was the initial 12-lead ECG.   Based on this ECG the lead paramedic called a "STEMI Alert" and transmitted the ECG to the receiving hospital. The on-duty ED physician received the ECG and the paramedic's radio report. The ED physician […]

72 year old male CC: "Unknown problem"

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EMS is dispatched to a 72 year old male patient. Third party call. History of Parkinson's Disease. Patient is conscious. No further information. On arrival, EMS finds a 72 year old Spanish-speaking male. Through an interpreter the lead paramedic determines that the patient became dizzy, fell down, and hit his head. A small hematoma is […]

Data quality and computerized interpretive statements

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There’s an important caveat when it comes to the GE-Marquette 12SL interpretive algorithm. It’s highly susceptible to errors when it interprets ECGs with poor data quality. Consider the following example. I don’t know anything about the history or clinical presentation. For my purposes here, I’m only interested in the interpretive statements. First, the rhythm strip. […]

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