11 results
Approach to ECGs
Check
 - Age, gender, name
 - 25mm/s; 10mm/mV
 - 1mm = 40ms; 0.1 mV
Rate
Approach to ECGs ... Short QT <300-360 ms ... #EKG #diagnosis ... electrocardiogram #cardiology ... #interpretation
Vasospastic (Prinzmetal) Angina
Definition / Epidemiology:
 • Rest angina attributed to coronary artery vasospasm.
 • Patients often
younger than other ACS ... Pathophysiology: ... troponin elevation Diagnosis ... changes on tele/ECG ... #cardiology #diagnosis
EKG Interpretation Cheat Sheet
1) Rate 
 - Regular - Count-Off 
 - Irregular - Count number
EKG Interpretation ... • Lateral (I + aVL ... Normal: Upright in all ... #Interpretation ... #cardiology #diagnosis
Chest Pain / ACS Evaluation Algorithm
Algorithm that attempts to the use history taking (guided by LRs),
taking (guided by LRs ... - History - EKG ... #Evaluation #diagnosis ... #Algorithm #cardiology ... #Angina
Algorithm for the Evaluation of Regular, Wide-Complex Tachycardia
1. aVR: Is the initial deflection in aVR positive?
same polarity) in all ... morphology: Is the QRS ... Tachycardia #Evaluation #Interpretation ... #ECG #EKG #Electrocardiogram ... #Diagnosis #Cardiology
Approach to ECGs - Ischemia
MI = Biomarkers + ECG or echo/angiogram findings
Pathologic Q - 1/3 height
1/3 height of QRS ... or bigger than QRS ... #EKG #diagnosis ... electrocardiogram #cardiology ... #Equivalents #Interpretation
VT versus SVT with Aberration - Interpretation Cheat Sheet

Features favouring VT
● Absence of typical RBBB or
with Aberration - Interpretation ... dissociation (P and QRS ... concordance in all ... Aberrancy #Comparison #Diagnosis ... #Cardiology
STEMI Equivalents on ECG
 • Conventional STEMI - Elevation of ST segment at (or 40-60 ms
Equivalents on ECG ... segment at (or 40-60 ms ... of the leads l, aVL ... #EKG #diagnosis ... #differential #cardiology
Causes of ST Segment Elevation - Differential Diagnosis Framework

STEMI:
 • Upsloping convex STE: "Pardee's sign" +
- Differential Diagnosis ... Prinzmetal's Angina ... #differential #diagnosis ... #cardiology #ecg ... #ekg #electrocardiogram
Preoperative Risk Evaluation

Major Pre-Op Questions:
1. Does the patient have any modifiable risk factors that could be
specific questions to ask ... Obtain EKG if: ... one post op Cardiology ... Unstable Angina ... stratification #diagnosis