Dr. Smith's ECG Blog

MAY 5, 2023

Common explanations for unusual rhythms such as this one include: i ) Hyperkalemia ( or other severe electrolyte disorder ); ii ) Recent infarction/ischemia; iii ) Sleep apnea; iv ) Severe hypothyroidism; v ) Acute neurologic catastrophe (ie, stroke, bleed, trauma, tumor ); vi ) Some other toxicity.

Bradycardia 52

Bradycardia Cardiac Arrest Arrhythmia Pacemaker 52

Ken Grauer, MD

OCTOBER 13, 2023

Even if we stopped here — We could conclude the following: There is marked bradycardia in today's rhythm ( ie, Heart rate in the low 30s ). Finally — If today's patient does not have significant underlying coronary disease — then her bradycardia with AV block may be the result of SSS ( S ick S inus S yndrome ).

Blog 159

Blog Arrhythmia Bradycardia Download 159

Dr. Smith's ECG Blog

JULY 21, 2024

There is no definite evidence of acute ischemia. (ie, Simply stated — t he patient was having recurrent PMVT without Q Tc prolongation, and without evidence of ongoing transmural ischemia. ( Some residual ischemia in the infarct border might still be present. Both episodes are initiated by an "R-on-T" phenomenon.

Arrhythmia 131

Arrhythmia Cardiogenic Shock Bradycardia Defibrillator 131

Dr. Smith's ECG Blog

JANUARY 3, 2022

Sinus bradycardia, normal conduction, normal axis, normal R wave progression, no hypertrophy. 2] Here there is no posterior ST elevation, but the anterior ST depression is also less—so it is dynamic, confirming acute ischemia. What do you think? But it is still STEMI negative.

STEMI 52

STEMI Myocardial Infarction Chest Pain Ischemia 52

Ken Grauer, MD

OCTOBER 27, 2023

That said — obvious findings include: i ) Marked bradycardia! — This suggests ischemia of uncertain duration. The October 25, 2021 post in Dr. Smith's ECG Blog — My Comment ( at the bottom of the page ) reviews my approach to another case of a Dual-Level Wenckebach block. be regular! —

Blog 101

Blog Pacemaker Bradycardia Arrhythmia 101

Dr. Smith's ECG Blog

JANUARY 23, 2024

Extensive conduction system abnormalities can have various causes (ischemia, genetic, infectious, amyloid, etc). For example — bradycardia and AV conduction disturbances are not uncommon with Hyperkalemia , with these conduction disturbances most often resolving once serum K+ is corrected.

Tachycardia 107

Tachycardia Arrhythmia Heart Disease Sudden Cardiac Death 107

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. With a twist. Do you recognize this ECG yet? Right Bundle Branch Block with ST Elevation in V1?

Chest Pain 52

Chest Pain Bradycardia Cardiac Arrest STEMI 52