The QT interval comprises the QRS-complex, the ST-segment, and the T-wave. One difficultly of QT interpretation is that the QT interval gets shorter as the heart rate increases. Thus at a heart rate of 60 bpm, the RR interval is 1 second and the QTc equals QT/1.
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watauga river at elizabethton, tennessee : 02/19 20:00 est : 5.34 : 2,380 --- cheatham county: 03431790: cumberland river at ashland city, tn : 02/19 19:00 cst : 20.51 : 91,800 : 31,800 : 03431800: sycamore creek near ashland city, tn : 02/19 19:30 cst : 3.87 : 214 : 145 : 03434500: harpeth river near kingston springs, tn : 02/19 19:00 cst : 6.87 : 3,520 : 1,270 : claiborne county