PAC’s

Results:
ECG STAT September 12, 2024
Premature Atrial Complexes (PACs)

Key Points Origin and Characteristics: PACs originate from ectopic atrial foci, resulting in abnormal P waves with different morphology and axis compared to sinus P waves. Hidden P Waves: Ectopic…

ECG STAT September 12, 2024
Premature Complexes (PACs, PJCs, & PVCs)

Key Points Spontaneous Depolarization: Different pacemaker cells in the heart can spontaneously depolarize at varying rates; the SA node is usually the fastest. Ectopic Impulses: Early depolarizations from ectopic foci…

Weekly Workout May 27, 2024
How to avoid misdiagnosis of irregular rhythms

A 80-year-old woman is referred to the emergency department for suspected rapid atrial fibrillation. The following ECG is obtained on arrival: 

Weekly Workout December 19, 2022
ECG Basics and Fundamentals: causes of pauses or clumped/grouped beats on the ECG

A 72-year-old man with PMHx of HTN presents to the emergency department with vomiting and lightheadedness. He is noted to be slightly bradycardic with an irregular rhythm on arrival. The…

Weekly Workout October 9, 2022
Bradydysrhythmia: An irregular rhythm with grouped or clumped beats

 A 75-year-old woman presents to the emergency department with palpitations and near syncope. She is noted to be bradycardic with an irregular rhythm. The following ECG is obtained on arrival:

Weekly Workout September 25, 2022
Bradydysrhythmia: when is it actually considered a complete heart block?

A 52-year-old man presents to the emergency department with chest pain associated with nausea and diaphoresis. The following ECG is obtained on arrival:

Weekly Workout August 28, 2022
Bradyarrhythmias: the types of acute myocardial infarction associated with heart block

A 48-year-old woman presents to the emergency department with a 2-day history of intermittent neck pain associated with nausea. Her pain progressively worsened and is now persistent. The following ECG…

Weekly Workout June 26, 2022
Differential DIagnoses: AV blocks, prolonged QTc intervals, T wave inversions, and more!

A 50-year-old woman is brought into the emergency department unresponsive. History is otherwise limited. The following ECG is obtained with no prior ECGs available for comparison.

Weekly Workout December 23, 2019
Rhythm Interpretation: never trust the computer interpretation and scrutinize every lead

An elderly male presents with weakness and lightheadedness to his primary care physician. He is referred to the ED after the following ECG is obtained:

Weekly Workout December 16, 2019
Rhythm Interpretation: grouped or clumped beats

A 67-year-old male with PMHx of ESRD presents to the ED with fevers and bacteremia. The following ECG is obtained for mild tachycardia:

Weekly Workout December 9, 2019
Rhythm Interpretation: how to avoid misdiagnosis of atrial fibrillation

An elderly male presents to the ED after a syncopal episode. He is found to be weak and lightheaded on arrival, with hypotension and mild tachycardia. There is no evidence…

Weekly Workout June 10, 2019
Bradydysrhythmias: a differential for too many P waves and a lesson in how to break down difficult rhythms

An 81-year-old female presents to the ED with lightheadedness and “funny heart beats”. She has no associated dyspnea and is noted to have normal vital signs. The following ECG is…

Weekly Workout December 7, 2015
Narrow Complex Tachycardia: inappropriate anticoagulation because of misdiagnosis

A 96-year-old man presents to the ED with a dry skin rash. On review of symptoms the patient reports 1-2 episodes of fleeting chest pain that is sharp. The following…

Weekly Workout March 16, 2015
Differential Diagnoses: Non-conducted P-waves (P:QRS > 1)

HPI:  A 92-year-old woman presents to the emergency department with lightheadedness. Case ECG   Before watching this week’s video, ask yourself these questions: Focus on the rate and rhythm, what…

Weekly Workout March 9, 2015
Rhythm Interpretation: a three-step approach to diagnosing AV blocks

HPI:  A 54-year-old woman with PMHx of cardiomyopathy is referred to the ED by her cardiologist who is concerned about an “arrhythmia”. Case ECG   Before watching this week’s video,…

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