EKG Flashcards
When are pathologic Q waves a problem?
What do they indicate?
When the duration is greater than 1 mm wide or an amplitude 1/3 the size of the QRS complex.
Previous MI
One key finding of this tracing?
What is the likely rhythm?
Treatment for this rhythm?
Not all p waves are the same, some abnormally shaped.
Premature Atrial Contractions
Often not treated
What leads are typically abnormal in an inferior MI?
Leads II, III and aVf
Name this type of rhythm.
This type or rhythm can be classified as one of 2 things. Describe them.
Second degree block
Mobius 1 - defined pattern, Atrial: Ventricular rate 2:1, 3:1, etc.
Mobius 2 - random pattern, sometimes they communcate, sometimes they do not.
How would you correct this rhythm pharmalogically?
Class III
Esmolol
Verapamil
This type of arrythmia is often assymptomatic. Name it
If a patient complained of discomfort what drugs could be used to correct this?
Alternatie treatments?
Atrial Fibrillation
Drugs
any class 3 drug, verapamil, esmolol, digitals
Other
Carotid massage, dive reflex
What is the standard P-R interval?
0.12-0.20 msecs
Name this rhythm and why
3rd degree block
p waves and QRS complexes are not communicating.
What is the Axis devitaiotn if Lead I is negative and aVF is positive?
Right Axis Deviation (+90-+180)
What is a key finding of this tracing?
What other key piece of information helps determine the type of rhythm?
What is the rhythm?
No p wave
Normal QRS
junctional
What findings are indicitave of ischemia or MI?
Q waves
Inverted T waves
ST elevation or depression
Name the correct medical term for this strip
Asystole
When is a QRS considered to be widened?
Greater then 3 horizontal boxes (0.12 msec)
Name this undesireable rhythm and its likely outcome
V-fib often leads to cardiac arrest
Describe this rhythym
PVC bigeminy (1 and a skip, 1 and a skip)
Name this tracing.
Name 3 drugs that can be used to correct this?
Supraventricular Tachycardia
Drugs
Adenosine
Verapamil
Esmolol
What is the QRS axis if lead I is negative and aVF is positive?
RIght Axis deviation
(+90-+180)
What leads would abnormal in an anterior lateral MI?
Leads I and aVF, V1-V6
When is this rhythm considered life threatening?
How would an acute episode be treated?
Always
V-tach should be treated in this order
- Cardiovert - sedate pt. first
- Amoiradarone
- Lidocaine
Name this type of Rhythm.
What is the key to the identification?
First degree block
Abnormally large PR
What are some cause of RAD?
physical displacement of heart, RV hypertrophy, loss of electrical activity to LV
Name the FICK Principle
rate at which substance is added to divided by amount removed from blood
Doppler Effect
apparent cahnge in freq caused by motion btwn source of wave and observer
What does an Echo measure with colors?
speed and direction of flow
