EKG

Question 1

When are pathologic Q waves a problem?

What do they indicate?

Answer 1

When the duration is greater than 1 mm wide or an amplitude 1/3 the size of the QRS complex.

Previous MI

Question 2

One key finding of this tracing?

What is the likely rhythm?

Treatment for this rhythm?

Answer 2

Not all p waves are the same, some abnormally shaped.

Premature Atrial Contractions

Often not treated

Question 3

What leads are typically abnormal in an inferior MI?

Answer 3

Leads II, III and aVf

Question 4

Name this type of rhythm.

This type or rhythm can be classified as one of 2 things. Describe them.

Answer 4

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.

Question 4

How would you correct this rhythm pharmalogically?

Answer 4

Class III

Esmolol

Verapamil

Question 5

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?

Answer 5

Atrial Fibrillation

Drugs

any class 3 drug, verapamil, esmolol, digitals

Other

Carotid massage, dive reflex

Question 6

What is the standard P-R interval?

Answer 6

0.12-0.20 msecs

Question 6

Name this rhythm and why

Answer 6

3rd degree block

p waves and QRS complexes are not communicating.

Question 6

What is the Axis devitaiotn if Lead I is negative and aVF is positive?

Answer 6

Right Axis Deviation (+90-+180)

Question 7

What is a key finding of this tracing?

What other key piece of information helps determine the type of rhythm?

What is the rhythm?

Answer 7

No p wave

Normal QRS

junctional

Question 8

What findings are indicitave of ischemia or MI?

Answer 8

Q waves

Inverted T waves

ST elevation or depression

Question 10

Name the correct medical term for this strip

Answer 10

Asystole

Question 11

When is a QRS considered to be widened?

Answer 11

Greater then 3 horizontal boxes (0.12 msec)

Question 13

Name this undesireable rhythm and its likely outcome

Answer 13

V-fib often leads to cardiac arrest

Question 14

Describe this rhythym

Answer 14

PVC bigeminy (1 and a skip, 1 and a skip)

Question 16

Name this tracing.

Name 3 drugs that can be used to correct this?

Answer 16

Supraventricular Tachycardia

Drugs

Adenosine

Verapamil

Esmolol

Question 17

What is the QRS axis if lead I is negative and aVF is positive?

Answer 17

RIght Axis deviation

(+90-+180)

Question 18

What leads would abnormal in an anterior lateral MI?

Answer 18

Leads I and aVF, V1-V6

Question 19

When is this rhythm considered life threatening?

How would an acute episode be treated?

Answer 19

Always

V-tach should be treated in this order

1. Cardiovert - sedate pt. first
2. Amoiradarone
3. Lidocaine

Question 20

Name this type of Rhythm.

What is the key to the identification?

Answer 20

First degree block

Abnormally large PR

Question 21

What are some cause of RAD?

Answer 21

physical displacement of heart, RV hypertrophy, loss of electrical activity to LV

Question 22

Name the FICK Principle

Answer 22

rate at which substance is added to divided by amount removed from blood

Question 23

Doppler Effect

Answer 23

apparent cahnge in freq caused by motion btwn source of wave and observer

Question 24

What does an Echo measure with colors?

Answer 24

speed and direction of flow