EKG

Question 1

How can you tell there is a posterior infarct without doing V4R?

Answer 1

Look at V1 for ST depression and tall R wave.

Question 2

Along with elevation, what is another way to tell an anterior infarct?

Answer 2

Poor R wave progression in the precordial leads(V1-V6)

Question 3

How does angina typically appear on an EKG?

Answer 3

Inverted T-wave, ST-segment depression, or ST-segment depression with inverted T-wave.

Question 4

How can you tell the difference between a non Q-wave infarct or angina?

Answer 4

Angina will return to baseline shortly after the attack.

non Q-wave infarct, the ST-segment remains depressed for at least 48 hours.

Question 5

What type of angina is associated with ST-elevation?

Answer 5

Prinzmetal Angina

Question 6

What is going on with Prinzmetal angina?

Answer 6

Can happen at any time. Usually from coronary artery spasms.

Question 7

How does Prinzmetal angina appear on the EKG?

Answer 7

With ST-segment elevation, but not rounded like normal.

Question 8

What are the characteristics of WPW(Wolf Parkinson White)?

Answer 8

Short PR-Interval and delta wave.

QRS is is widened to more than 0.1.

Question 9

What does a Delta wave look like?

Answer 9

A J on the R-wave.

Slight slope directly off of the P-wave.

Question 10

What rhythm can hyperkalemia lead to?

Answer 10

VFIB

Question 11

Hyperkalemia means

Answer 11

Too much potassium

Question 12

What does hyperkalemia look like on the EKG strip?

Answer 12

Spike T-waves across the entire strip.

Question 13

What is the difference between an infarct and hyperkalemia on a EKG strip?

Answer 13

Infarction: spike T-waves will be confined to the area of infarct.
Hyperkalemia: T-waves will be throughout.

Question 14

What is the hyperkalemia progression on an EKG strip?

Answer 14

1. Spiked T-waves
2. PRI becomes prolonged and and P-waves gradually flattens, then disappears.
3. Ultimately the QRS widens until it merges w/ the T-wave. Forming a sine wave pattern
4. VFIB may develop.

Question 15

What are EKG characteristics of hypokalemia?

Answer 15

ST-segment depression
Flattening of T-wave w/ prolonged QT interval
Appearance of U wave. (U wave more prominent than T wave).

Question 16

What is a U wave?

Answer 16

1. Wave appearing after the T wave in the cardiac cycle. (Bigger than the T and P waves)
2. Most characteristic feature of hypokalemia, but also seen in other conditions(CNS and certain antiarrhythmic drugs).

Question 17

Where is the U wave best seen?

Answer 17

Usually anterior leads.