2025 ECG Quiz 6

Question 1

What is pre-excitation?

Answer 1

Question 2

Wolf-Parkinson-White
(WPW)

Answer 2

Question 3

A shortened PRI without
a Delta Wave

Answer 3

Question 4

Why is pre-excitation
relevant?

Answer 4

Question 5

Supraventricular Tachycardia
(AVRT) in WPW

Answer 5

Question 6

Orthodromic AVRT

Answer 6

Question 7

Antidromic AVRT

Answer 7

Question 8

Atrial Fibrillation with
WPW

Answer 8

Question 9

Electrolyte
Disturbances: Hyperkalemia

Answer 9

Question 10

Progression of
Hyperkalemia (1)

Answer 10

Question 11

Progression of
Hyperkalemia (2)

Answer 11

Question 12

Treatment of
Hyperkalemia

Answer 12

Question 13

Electrolyte Disturbances: Hypokalemia

Answer 13

Question 14

Electrolyte
Disturbances: Hypercalcemia

Answer 14

Question 15

Electrolyte Disturbances: Hypocalcemia

Answer 15

An intervention that many clinicians do not think about is administrating Calcium

Question 16

Electrolyte Disturbances: Magnesium
Disturbances

Answer 16

Question 17

Drug effects
on ECG: Medications That
Prolong the QT Interval

Answer 17

Note on Zofran is that this is from Cancer dosages… which are extremely high, not what we would push

Can change with the heart rate

Look up QTC???

Question 18

Drug effects
on ECG: Digitalis & Digoxin

Answer 18

Question 19

Digoxin Toxicity

Answer 19

Question 20

Other Causes & Conditions effect on the EKG

Answer 20

Question 21

Hypothermia

Answer 21

Question 22

J wave (Osborn’s Waves)

Answer 22

Brugada syndrome is a genetic condition that predisposes people to cardiac arrythemias

Question 23

Pericarditis

Answer 23

Question 24

Hypertrophic Obstructive
Cardiomyopathy (HOCM)

Answer 24

Question 25

Myocarditis

Answer 25

Patient has infection, sepsis with this ECG... ... need clinical adjunct to make this diagnosis ... applies to a lot of these conditions within the "Other Causes" section of lecture PP

Question 26

Atrial Septal Defect (ASD)

Answer 26

Question 27

Chronic Obstructive Pulmonary Disease (COPD)

Answer 27

Question 28

Acute Pulmonary Embolism

Answer 28

Can be one of scariest things you encounter intraoperatively

Question 29

The Athlete’s Heart

Answer 29

African American athletes can see - inverted T wave in V1-V4

Question 30

Sleep Disorders

Answer 30

Question 31

CNS Events...

Answer 31

Central nervous system (CNS) catastrophes, such as a subarachnoid bleed or cerebral infarction, can produce diffuse T-wave inversion and prominent U waves. The T waves are typically very deep and very wide, and their contour is usually symmetrical (unlike the asymmetrical inverted T waves of secondary repolarization associated with ventricular hypertrophy). Sinus bradycardia also is commonly seen. These changes are believed to be due to involvement of the autonomic nervous system.

Question 32

The 9-Step Method for Reading EKGs

Answer 32

Know your patient & practice, practice, practice! Before you start: * Make sure 10 mm = 1 mV on EKG paper. * Make sure paper speed is correct. 1. Heart rate: determine the heart rate 2. Intervals: measure— * Length of the PR (0.12-0.2 sec) and QT intervals (<.44 sec) * Width of the QRS complexes (0.06-0.1 sec) 3. Axis: check for deviations in P (H: <2.5mm; D: 0.08-0.1sec) , and T (H: 1/3-2/3 of R Wave; D: 0.16sec) waves and QRS complexes 4. Rhythm: always ask the four questions— * Are normal P waves present * Are the QRS complexes wide or narrow (0.06-0.1 sec) * What is the relationship between P waves and QRS complexes * Is the rhythm regular or irregular? 5. Conduction blocks (Ch. 4) * Atrioventricular (AV) block * Bundle branch block or hemiblock 6. Preexcitation (Ch. 5) 7. Enlargement and hypertrophy (Ch. 3) 8. Acute Coronary Syndromes (Ch. 6) * Look for Q waves * Look for ST-segment and T-wave changes. 9. Other conditions (Ch. 7) * Is there anything on the EKG that suggests one of the other cardiac or noncardiac conditions discussed? * Lost? Never hesitate to ask for assistance. Acronym HI ARC PECO ... professor recommends to memorizing the actual process and ideas