Bradycardia ICU Tachycardia 
Dr. Smith's ECG Blog
JANUARY 2, 2025
CASE CONTINUED She was admitted to the ICU. Discontinue all negative chronotropic agents, since the risk of torsade is much higher with bradycardia or pauses. Even with tachycardia and a paced QRS duration of ~0.16 LBBB, ventricular pacing, etc.)." The plan: 1. See this post: How a pause can cause cardiac arrest 2.
Dr. Smith's ECG Blog
OCTOBER 25, 2023
ECG is consistent with severe hypokalemia and/or hypomagnesemia causing prolonged QT (QU) at high risk of Torsades (which is polymorphic ventricular tachycardia in the setting of a long QT interval). The patient was admitted to the ICU for close monitoring and electrolyte repletion and had an uneventful hospital course. Is it STEMI?
Dr. Smith's ECG Blog
APRIL 6, 2018
There is a regular, wide complex, (mostly) monomorphic tachycardia. The differential of wide, regular, monomorphic tachycardia is: VT or SVT with aberrancy, all +/- hyperkalemia (see diagrams below). He made it to the ICU, however the patient unfortunately expired approximately 24 hours after ICU admission.
Dr. Smith's ECG Blog
JULY 24, 2018
Prior ECG on file: Sinus tachycardia, imperfect baseline, otherwise unremarkable. Sinus tachycardia with unequivocal evidence of hyperkalemia, including widened QRS with "pulled apart" morphology (widened QRS) compared to baseline, as well as clearly peaked T-waves. He required a low dose norepinephrine drip to maintain BP.
Dr. Smith's ECG Blog
MAY 5, 2022
After initiating treatment for hyperkalemia, repeat ECG showed resolution of Brugada pattern: The ECG shows sinus tachycardia. He was admitted to the ICU and transferred emergently to a facility where he could undergo emergent dialysis as a part of further evaluation and management. The QRS is narrow and T waves are much less peaked.
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