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Updated: Jul 15, 2025
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Automated Quantification and Analysis of Cell Counting Procedures Using ImageJ Plugins
Published on: November 17, 2016
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Agreement of Computerized QT and QTc Interval Measurements Between Both Bedside and Expert Nurses Using Electronic
The Journal of Cardiovascular Nursing
|October 3, 2023
Summary
Computerized QT/QTc measurements from bedside monitors closely agree with nurse measurements, offering a potentially more accurate and efficient alternative. This finding suggests computerized methods can reduce nurse workload and improve ECG monitoring accuracy in hospitalized patients.
Area of Science:
- Cardiology
- Clinical Monitoring
- Electrocardiography
Background:
- QT/QTc prolongation on ECG increases torsade de pointes risk in hospitalized patients.
- Manual ECG measurements are time-consuming and prone to inaccuracies.
- Agreement between automated bedside monitor QT/QTc and manual nurse measurements is not well-established.
Purpose of the Study:
- To evaluate the agreement between computerized QT/QTc measurements and those taken by expert and bedside nurses.
- To assess the clinical significance of any observed differences in QT/QTc measurements.
Main Methods:
- Prospective observational study conducted in 3 intensive care units.
- Collected up to 2 QT/QTc measurements per patient using bedside monitors and electronic calipers.
- Analyzed measurement agreement using the Bland-Altman test.
Main Results:
- Analysis included 54 QT/QTc measurements from 34 ICU patients.
- Computerized vs. expert nurse QT bias: -11.04 ± 4.45 ms (P=.016).
- Computerized vs. bedside nurse QTc bias: -18.49 ± 7.90 ms (P=.022).
Conclusions:
- Computerized and nurse-performed QT/QTc measurements show close agreement.
- Statistically significant differences were less than 20 ms, indicating no clinical significance.
- Computerized measurements may reduce inaccuracies and nurse burden, enhancing practice adherence.
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