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TORSADES DE POINTES



Torsades de pointes, atau torsades dalam bahasa perancis istilah yang secara harfiah

berarti "memutar dari titik-titik". Ini pertama kali dideskripsikan oleh Dessertenne pada tahun

1966 dan mengacu pada berbagai tertentu takikardia ventrikuler yang menunjukkan karakteristik

yang berbeda pada elektrokardiogram (EKG). EKG menunjukkan torsades membaca cepat,

takikardia ventrikular polimorfik dengan karakteristik putaran dari kompleks QRS di sekitar

isoelektrik baseline. Hal ini juga terkait dengan penurunan tekanan darah arteri, yang dapat

menyebabkan pingsan.. Meskipun torsades de pointes ventrikular aritmia yang jarang, dan dapat

berubah menjadi fibrilasi ventrikular, yang akan menyebabkan kematian mendadak tanpa adanya

intervensi medis. Torsades de pointes dikaitkan dengan sindrom QT panjang, suatu kondisi

dimana interval QT panjang terlihat pada EKG.

Karakteristik dari Torsadaes de pointes antara lain :

 Rotasi dari sumbu listrik jantung sekurang-kurangnya 180 º

 Interval QT LQTS yang berkepanjangan.

 Didahului oleh panjang dan RR-interval pendek

 Dipicu oleh awal kontraksi ventrikel prematur (R-on-T PVC)

Faktor-faktor yang terkait dengan peningkatan kecenderungan torsades de pointes meliputi:

 Familial sindrom QT panjang

 Kelas IA antiarrhythmics

 Kelas III antiarrhythmics

 Hypomagnesemia

 Hipokalemia

 Hypocalcemia

 Hipoksia

 Asidosis

 Heart failure

 Hipertrofi ventrikel kiri

 Slow heart rate

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