Dr. Smith's ECG Blog
DECEMBER 24, 2023
Flecainide : This is a potentially dangerous Na channel blocker which can cause ventricular dysrhythmias including ventricular fibrillation. It simply does not make physiologic sense to suddenly see an all-negative QRS complex in this most lateral chest lead. She is already anti-coagulated, so that is not an issue.
Dr. Smith's ECG Blog
DECEMBER 26, 2020
Likewise, in some cases of ischemia concealed by flutter waves, the ischemia can be seen despite the flutter waves, whereas in other cases the dysrhythmia must be terminated before the ischemia can be clearly distinguished. Even when flutter waves conceal true ST segment deviations, the cause and effect relationship may be unclear.
Dr. Smith's ECG Blog
OCTOBER 10, 2022
Then there is loss of pulses with continued narrow complex on the monitor ("PEA arrest") Learning Points: Sudden witnessed Cardiac Arrest due to ACS is almost always due to dysrhythmia. The ECG accurately reflects the physiologic state of the underlying myocardium, but there is always more than one possible etiology of that physiologic state.
Dr. Smith's ECG Blog
NOVEMBER 19, 2016
Smith comment: In a large randomized trial of dopamine vs. norepinephrine (11) for shock which was published after the above-mentioned recommendations, dopamine had more adverse events (especially severe dysrhythmias, and especially atrial fibrillation). Any alteration in physiology can change "compensated" AS to "decompensated" AS.
Dr. Smith's ECG Blog
APRIL 8, 2015
Dysrhythmia, pacer), 4) valvular heart disease, 5) FHx sudden death, 6) volume depletion, 7) persistent abnormal vitals, 8) primary CNS event __ 3) Mendu ML et al. Fourth, syncope in the elderly often results from polypharmacy and abnormal physiologic responses to daily events.
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