Dr. Smith's ECG Blog

MAY 5, 2022

Hyperkalemia causes peaked T waves and the "killer B's of hyperkalemia", including bradycardia, broad QRS complexes, blocks of the AV node and bundle branches, Brugada morphology, and otherwise bizarre morphology including sine wave. Steve, what do you think of this ECG in this Cardiac Arrest Patient?" With a twist.

Chest Pain 52

Chest Pain Bradycardia Cardiac Arrest STEMI 52

Dr. Smith's ECG Blog

MAY 19, 2020

There is sinus bradycardia with one PVC. There is "Shark Fin morphology" I saw this and thought for certain that this was going to be an LAD or left main occlusion as etiology of arrest, and etiology of profound ST Elevation in I, II, aVL, and V3-V6, and ST depression in III, V1 and V2. 24, 2020 post ( link to that post given above ).

Defibrillator 52

Defibrillator Circulation Plaque Cardiac Arrest 52

Dr. Smith's ECG Blog

FEBRUARY 27, 2023

For example — marked bradycardia with unusual forms of advanced AV block — or marked bradycardia without evident P waves — or marked QRS widening with "shapeless" morphology — are all ECG indication of the need for immediate IV calcium until improvement of these ECG patterns. Why Isn't the Serum K+ Higher than 6.2

Tachycardia 52

Tachycardia Document Blog Bradycardia 52

Dr. Smith's ECG Blog

MAY 6, 2019

This ECG pattern may be diagnostic of B rugada S yndrome IF seen in association with: i ) a history of cardiac arrest; polymorphic VT; or of non-vagal syncope; and / or ii ) a positive family history of sudden death at an early age; and / or iii ) a similar ECG in relatives. Bradycardia. Acute febrile illness. Hypothermia.

Chest Pain 52

Chest Pain STEMI Ischemia Myocardial Infarction 52

Dr. Smith's ECG Blog

OCTOBER 11, 2020

About two hours after admission, he suffered a cardiac arrest (whether it was VF/VT or PEA is not available) and expired. And a complication. == MY Comment by K EN G RAUER, MD ( 10/11/2020 ): == It cannot be stated any clearer than what Dr. Meyers states above. It isn't a STEMI," so cath lab refusal (again). Were they right?

Chest Pain 52

Chest Pain STEMI Blog Tachycardia 52

Dr. Smith's ECG Blog

JANUARY 30, 2019

In addition to a spontaneous or induced Brugada-1 ECG pattern, criteria for B rugada S yndrome require one or more of the following: History of cardiac arrest, of polymorphoic VT, or of non-vagal syncope — positive family history of sudden death at an early age — a similar ECG in close relatives.

Heart Rhythm 52

Heart Rhythm Sudden Cardiac Death Arrhythmia STEMI 52

Dr. Smith's ECG Blog

JANUARY 21, 2023

This ECG shows a sinus bradycardia with a normal conduction pattern (normal PR, normal QRS, and normal QTc), normal axis, normal R-wave progression, normal voltages. Hypothermia can also produce bradycardia and J waves, with a pseudo-STEMI pattern. Internat J Arrhyth 2020 Uesako H, Fukikawa H, Hashimoto S, et al.

STEMI 52

STEMI Bradycardia Arrhythmia Cardiac Arrest 52

Dr. Smith's ECG Blog

FEBRUARY 10, 2025

Theres sinus bradycardia, borderline PR interval, narrow QRS; normal axis/R wave progression; low precordial voltages, and subtle peaked T waves (most obvious in V2, but all T waves are symmetric with a narrow base). Theres no prior ECG to compare - but the bradycardia, prolonged PR and peaked T waves could all be from hyperkalemia.

Bradycardia 118

Bradycardia Cardiac Arrest Hypertension ICU 118