Research Article
QT Measurement and Heart Rate Correction during Hypoglycemia: Is There a Bias?
Table 1
Blood glucose and ECG variables at baseline (
), at blood glucose nadir (
) and 90 minutes after blood glucose nadir (
). Results are mean ± SD [range].
| | Method | Variable | Time | | | |
| | Blood Glucose | 10.4 ± 3.8 [5.0–19.5] | 2.4 ± 0.3 [1.7–2.9] | 10.1 ± 3.3 [5.7–18.7] | | MA | RR (ms) | 933 ± 157 [665–1278] | 845 ± 128 [640–1125] | 871 ± 159 [665–1245] | | QTcF (ms) | 412 ± 19 [379–463] | 412 ± 21 [374–460] | 413 ± 22 [378–453] | | QTcB (ms) | 418 ± 24 [384–472] | 425 ± 23 [391–475] | 424 ± 26 [375–473] | | T/R Ratio (−) | 0.3 ± 0.14 [0.1–0.62] | 0.2 ± 0.1 [0.03–0.44] | 0.23 ± 0.11 [0.07–0.51] |
| | SI | RR (ms) | 935 ± 160 [658–1272] | 836 ± 139 [625–1132] | 869 ± 161 [637–1249] | | QTcF (ms) | 399 ± 27 [363–452] | 433 ± 61 [368–501] | 408 ± 35 [359–496] | | QTcB (ms) | 405 ± 32 [364–467] | 447 ± 66 [379–517] | 419 ± 40 [364–506] | | T/R Ratio (−) | 0.31 ± 0.13 [0.12–0.66] | 0.2 ± 0.1 [0.07–0.47] | 0.24 ± 0.1 [0.12–0.47] |
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