VII. The Nonischemic Disorders: EKG Changes Related to Drugs, Electrolyte Abnormalities, and Other Diseases Review

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Headshot of Kevin Hodges, Vice Chair, Emergency Medicine
Kevin Hodges
Vice Chair, Emergency Medicine
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Chris Anderson
Vice Chair, Pediatrics
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These worksheets are for self-study only. Answers will not be evaluated.

Worksheet 1

Complete the basic measurements, evaluate for ischemia, infarction, and hypertrophy, diagnose clinical condition, and evaluate clinically.

Parameter Measurement Interpretation
HR    
Rhythm    
PR    
QRS    
QT    
QTc    
P direction    
QRS direction    
Abnormal parameter If present, note the leads or location
Inverted T waves  
ST depression  
ST elevation  
Q waves or equivalents  
Systemic effects If present, note
LAA/RAA/LVH/RVH  
Drug effect  
Hyper/hypokalemia  
Hyper/hypocalcemia  
Low voltage  
SI/QT III pattern  
Pericarditis  

HR 100, sinus rhythm. QT 0.44. The QTc is 0.57 which is dangerously long. Drug and electrolyte abnormalities must be identified immediately and corrected. Diffuse ST changes present (First Rule of the T Waves also applies).

Worksheet 2

Complete the basic measurements, evaluate for ischemia, infarction, and hypertrophy, diagnose clinical condition, and evaluate clinically.

Parameter Measurement Interpretation
HR    
Rhythm    
PR    
QRS    
QT    
QTc    
P direction    
QRS direction    
Abnormal parameter If present, note the leads or location
Inverted T waves  
ST depression  
ST elevation  
Q waves or equivalents  
Systemic effects If present, note
LAA/RAA/LVH/RVH  
Drug effect  
Hyper/hypokalemia  
Hyper/hypocalcemia  
Low voltage  
SI/QT III pattern  
Pericarditis  

Sinus tachycardia. RVH. Inferior Q waves. SI QT III pattern. Acute pulmonary embolism should be ruled out. Peaked T waves, rule out hyperkalemia.

Worksheet 3

Complete the basic measurements, evaluate for ischemia, infarction, and hypertrophy, diagnose clinical condition, and evaluate clinically.

Parameter Measurement Interpretation
HR    
Rhythm    
PR    
QRS    
QT    
QTc    
P direction    
QRS direction    
Abnormal parameter If present, note the leads or location
Inverted T waves  
ST depression  
ST elevation  
Q waves or equivalents  
Systemic effects If present, note
LAA/RAA/LVH/RVH  
Drug effect  
Hyper/hypokalemia  
Hyper/hypocalcemia  
Low voltage  
SI/QT III pattern  
Pericarditis  

Low voltage. There is dramatic reduction of voltage. Pneumothorax, COPD, pericardial effusion, pleural effusion, should be considered. This patient had infiltrative cardiomyopathy.

Worksheet 4

Complete the basic measurements, evaluate for ischemia, infarction, and hypertrophy, diagnose clinical condition, and evaluate clinically.

Parameter Measurement Interpretation
HR    
Rhythm    
PR    
QRS    
QT    
QTc    
P direction    
QRS direction    
Abnormal parameter If present, note the leads or location
Inverted T waves  
ST depression  
ST elevation  
Q waves or equivalents  
Systemic effects If present, note
LAA/RAA/LVH/RVH  
Drug effect  
Hyper/hypokalemia  
Hyper/hypocalcemia  
Low voltage  
SI/QT III pattern  
Pericarditis  

Peaked T waves in V2 and V3. Hyperkalemia.

Worksheet 5

Complete the basic measurements, evaluate for ischemia, infarction, and hypertrophy, diagnose clinical condition, and evaluate clinically.

Parameter Measurement Interpretation
HR    
Rhythm    
PR    
QRS    
QT    
QTc    
P direction    
QRS direction    
Abnormal parameter If present, note the leads or location
Inverted T waves  
ST depression  
ST elevation  
Q waves or equivalents  
Systemic effects If present, note
LAA/RAA/LVH/RVH  
Drug effect  
Hyper/hypokalemia  
Hyper/hypocalcemia  
Low voltage  
SI/QT III pattern  
Pericarditis  

LBBB with a very wide QRS. This combination suggests additional conduction depression from drug or electrolyte effect.