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Slide the QTc to spot a long-QT risk.
Normal
< 440 ms (men) / < 460 ms (women).
💡 Low K⁺, Mg²⁺ or Ca²⁺ and many drugs prolong the QT.
See a real image and a video lecture, or ask the AI Tutor to explain it your way.
Educational only — not clinical advice. Always confirm with your prescribed textbooks.