Increasing HR<unk> creases QT interval
1-2gm IV over 1-2 min, repeat in 5-15min; then 1-2gm/hr (3-10mg/min) drip
Danger of hypermagnesemia →<unk> pressed neuromuscular function and respiratory drive, so monitor closely
Supplement with K+
Danger of hypermagnesemia →<unk> pressed neuromuscular function and respiratory drive, so monitor closely
Supplement with K+
2-8 mcg/min
Target HR > 90 bpm
Goal HR 90-120
Note: Not a treatment for<unk> , but useful in maintaining sinus rhythm
Lidocaine 1 mg/kg bolus, followed by 0.5-4 mg/min, titrated to rhythm response
Inpatient may monitor plasma lidocaine levels, with goal < 6 mcg/mL
Torsades de pointes
Drug induced
Brugada syndrome
Congenital long QT
Takotsubo cardiomyopathy
Hypocalcemia
Unstable angina
Hypomagnesemia