Conduction: Difference between revisions
→Short QT syndrome
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===Short QT syndrome=== | ===Short QT syndrome=== | ||
There is controversy whether short QT intervals are associated with sudden death. One trial found QTc intervals < 300ms to be associated with sudden death.<cite>Gaita</cite> However, a recent Finnish study in a random selection of healthy subjects (n=10 822) did not find an increased incidence of sudden death. They defined <320ms as 'very short' and < 340ms as 'short'. In total, 15 deaths occured in the group with QTc <340ms, with only one possible sudden death (cause of death unknown). They used Friderica's method for QTc correction: QTfc=QT^3 / SQRT(RR)<cite>Anttonen</cite><cite> | There is controversy whether short QT intervals are associated with sudden death. One trial found QTc intervals < 300ms to be associated with sudden death.<cite>Gaita</cite> However, a recent Finnish study in a random selection of healthy subjects (n=10 822) did not find an increased incidence of sudden death. They defined <320ms as 'very short' and < 340ms as 'short'. In total, 15 deaths occured in the group with QTc <340ms, with only one possible sudden death (cause of death unknown). They used Friderica's method for QTc correction: QTfc=QT^3 / SQRT(RR)<cite>Anttonen</cite><cite>Fridericia</cite> | ||
== References == | == References == | ||