ecg
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| ====== 12-lead electrocardiogram ====== | ====== 12-lead electrocardiogram ====== | ||
| - | Resting ECGs were taken in participants aged 13 years and older who participated in [[1A Visit 1]] and [[2A Visit 1]].\\ | + | Resting ECGs ([[sections|section]]: |
| - | This ECG measures electrical activity of the heart during rest, summarized in 12 leads.\\ | + | * [[1A Visit 1]] (n = ~156.000, including ~5600 [[children]]) |
| + | * [[2A Visit 1]] (n = ~112.000, no children)) | ||
| + | * [[3A Visit 1]] | ||
| + | |||
| + | ===== Background ===== | ||
| + | |||
| + | The 12-lead resting | ||
| The ECG provides many (>400) different variables at once, both quantitative and qualitative traits. These include duration, voltage and configuration characteristics. For example, information is provided of the cardiac rhythm, heart rate, the function of the sinoatrial and the atrioventricular node, atrial size, left ventricular mass, and repolarisation time (e.g. QT time). | The ECG provides many (>400) different variables at once, both quantitative and qualitative traits. These include duration, voltage and configuration characteristics. For example, information is provided of the cardiac rhythm, heart rate, the function of the sinoatrial and the atrioventricular node, atrial size, left ventricular mass, and repolarisation time (e.g. QT time). | ||
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| The ECG resulted in the following variables: | The ECG resulted in the following variables: | ||
| - | | **English** | + | | **English** |
| - | | Test Code | TCODE | [[2A Visit 1]] | 13+ | | + | | ecg performed |
| - | | Total presentations or trials. | + | | ecg performed |
| - | | Total correct responses | + | | if not, reason: / ecg performed |
| - | | Total error responses | + | | ecg device code | ecgdevice |
| - | | Speed measure | + | | is ecg to be manually reviewed by a doctor? |
| - | | Speed measure | + | | research nurse - ecg result needs to be reviewed by ecg assistant |
| - | | Speed measure | + | | is the ecg manually reviewed by a doctor? |
| - | | Accuracy measure | + | | system evaluation ecg | systeem |
| - | | Accuracy measure | + | | automatic interpretation by welch allyn | means | ecg_welchallyn_all_m_1 |
| - | | CPAL and ISLT specific | + | | ecg technician - category of ECG review |
| + | | ecg technician - advise to GP based on ecg review | ||
| + | | ecg technician - technical review | ||
| + | | heart rate | hr | ecg_heartrate_all_m_1 | ||
| + | | overall p-axis (degrees) | ||
| + | | overall duration of p-wave (ms) | p | p_wave_all_m_1 | ||
| + | | overall pq time (ms) | pq | pq_time_all_m_1 | ||
| + | | overall qrs-axis (degrees) | qrs_axis | ||
| + | | qt-interval (ms) | qt | qt_interval_all_m_1 | ||
| + | | overall duration | ||
| + | | qt-interval (ms) corrected | ||
| + | | overall t-axis (degrees) | ||
| + | | negative amplitude of p-wave (microvolt) - lead I - II - III - aVR - aVL - aVF / V1 - V2 - V3 - V4 - V5 - V6 | pnegamp_1-6/ | ||
| + | | posittive amplitude | ||
| + | | amplitude of the q-wave (microvolt) - lead I - II - III - aVR - aVL - aVF / V1 - V2 - V3 - V4 - V5 - V6 | qamp_1-6/ | ||
| + | | duration | ||
| + | | amplitude of the r'-wave (microvolt) - lead I - II - III - aVR - aVL - aVF / V1 - V2 - V3 - V4 - V5 - V6 | raccamp_1-6/ | ||
| + | | duration of the r'-wave (ms) - lead I - II - III - aVR - aVL - aVF / V1 - V2 - V3 - V4 - V5 - V6 | raccduration_1-6/ | ||
| + | | amplitude of the r-wave | ||
| + | | duration of the r-wave (ms) - lead I - II - III - aVR - aVL - aVF / V1 - V2 - V3 - V4 - V5 - V6 | rduration_1-6/ | ||
| + | | amplitude of the s'-wave (microvolt) - lead I - II - III - aVR - aVL - aVF / V1 - V2 - V3 - V4 - V5 - V6 | saccamp_1-6/ | ||
| + | | duration of the s' | ||
| + | | amplitude of the s-wave (microvolt) - lead I - II - III - aVR - aVL - aVF / V1 - V2 - V3 - V4 - V5 - V6 | samp_1-6/ | ||
| + | | duration of the s-wave (ms) - lead I - II - III - aVR - aVL - aVF / V1 - V2 - V3 - V4 - V5 - V6 | sduration_1-6/ | ||
| + | | deviation from the st segment at 0 ms from the j point (mm) - lead I - II - III - aVR - aVL - aVF / V1 - V2 - V3 - V4 - V5 - V6 | st0_1-6/ | ||
| + | | deviation from the st segment at 20 ms from the j point (mm) - lead I - II - III - aVR - aVL - aVF / V1 - V2 - V3 - V4 - V5 - V6 | st20_1-6/ | ||
| + | | deviation from the st segment at 40 ms from the j point (mm) - lead I - II - III - aVR - aVL - aVF / V1 - V2 - V3 - V4 - V5 - V6 | st40_1-6/ | ||
| + | | deviation from the st segment at 60 ms from the j point (mm) - lead I - II - III - aVR - aVL - aVF / V1 - V2 - V3 - V4 - V5 - V6 | st60_1-6/ | ||
| + | | deviation from the st segment at 80 ms from the j point (mm) - lead I - II - III - aVR - aVL - aVF / V1 - V2 - V3 - V4 - V5 - V6 | st80_1-6/ | ||
| + | | negative amplitude of t-wave (microvolt) - lead I - II - III - aVR - aVL - aVF / V1 - V2 - V3 - V4 - V5 - V6 | tnegamp_1-6/ | ||
| + | | positive amplitude of t-wave (microvolt) - lead I - II - III - aVR - aVL - aVF / V1 - V2 - V3 - V4 - V5 - V6 | tposamp_1-6/ | ||
| + | | negative amplitude of p-wave (microvolt) - lead X - Y - Z | pnegamp_23-25 | ||
| + | | posittive amplitude of p-wave (microvolt) - lead X - Y - Z | pposamp_23-25 | ||
| + | | amplitude of the q-wave (microvolt) - lead X - Y - Z | qamp_23-25 | ||
| + | | duration of the q-wave (ms) - lead X - Y - Z | qduration_23-25 | ||
| + | | amplitude of the r' | ||
| + | | duration of the r' | ||
| + | | amplitude of the r-wave (microvolt) - lead X - Y - Z | ramp_23-25 | ||
| + | | duration of the r-wave (ms) - lead X - Y - Z | rduration_23-25 | ||
| + | | amplitude of the s' | ||
| + | | duration of the s' | ||
| + | | amplitude of the s-wave (microvolt) - lead X - Y - Z | samp_23-25 | ||
| + | | duration of the s-wave (ms) - lead X - Y - Z | sduration_23-25 | ||
| + | | deviation from the st segment at 0 ms from the j point (mm) - lead X - Y - Z | st0_23-25 | ||
| + | | deviation from the st segment at 20 ms from the j point (mm) - lead X - Y - Z | st20_23-25 | ||
| + | | deviation from the st segment at 40 ms from the j point (mm) - lead X - Y - Z | st40_23-25 | ||
| + | | deviation from the st segment at 60 ms from the j point (mm) - lead X - Y - Z | st60_23-25 | ||
| + | | deviation from the st segment at 80 ms from the j point (mm) - lead X - Y - Z | st80_23-25 | ||
| + | | negative amplitude of t-wave (microvolt) - lead X - Y - Z | tnegamp_23-25 | ||
| + | | posittive amplitude of t-wave (microvolt) - lead X - Y - Z | tposamp_23-25 | ||
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