[22] Pediatric ECG Flashcards Preview

[OS 213] CVS Module > [22] Pediatric ECG > Flashcards

Flashcards in [22] Pediatric ECG Deck (29):
1

At what age is the LV bigger than the RV?

1 month

2

Describe: T Wave in Neonates

This is true until?

Upright

Inverts after 7 days of age

3

By what age does the T Wave invert?

7 years

4

QRS Axis in Adults

0-90 Degrees

5

QRS Axis of Neonates

+60-160 Degrees

6

QRS Axis by 1 Year of Age

+10-100 Degrees

7

[Heart Rate]

Birth
2 year
4 year
10 years

B: 110-150 BPM
2: 85-125 BPM
4: 75-115 BPM
10 Years: Adult Values

8

In an ECG Lead, where would the tall QRS be in a child?

V4R
V1
V2

This is because the right ventricle is bigger in the child

9

How do you use the Rule of Three Hundred

300
150
100
75
60

Depending on the number of boxes between the Rs

10

Formal Formula for Measurement of Rate in an ECG

1500 / # Small Squares Between R-R

11

Describe: P Wave in Ectopic Rhythm

Inverted P Wave and I in AVL

12

Supraventricular Tachycardia Rate:

Infant
Child

> 220 BPM

> 180 BPM

[BAKA LANG, BAKA LANG LUMABAS SA EXAM]

13

What do you look for first when diagnosing pediatric ECGs?

Age
Rate
Rhythm

14

[Determination of QRS Axis]

II and III have to be how many degrees from AVF?

30 Degrees

15

[Determination of QRS Axis]

AVR and AVL have to be how many degrees from 1?

30 Degrees

16

When is the QRS Positive?

When there is depolarization going towards the lead

17

When is the QRS Negative?

When there is depolarization going away from the lead

18

Perpendicular Leads

I AVF
II AVL
III AVR

19

Determination of Axis

Find Equiphasic Lead
Perpendicular Lead
Determine if Perpendicular is + or -
Axis corresponds to that lead

20

Right Ventricular Hypertrophy in Pediatric ECG

Describe:

R
S
R/S
Q
T

R: Tall R V4R, V1 V2
S: Deep in V5 and V6
R/S: More than 2
R/S: V6 <1
Q: QR in V1 or V3R, V4R
T: Upright T in V1 after 3 days (Should be inverted in patients that are not neonates)

21

Left Ventricular Hypertrophy in Pediatric ECG

Describe:

R
S
R/S
Q
T

R: Tall R V6 >25mm
S: SV1 >20mm
R/S: V1 < 0.8 under 1 year
Q: Q >= 5 mm in V5 V6
T: T wave inversion in V5 V6

22

Normal PR Interval

0.12-0.20 second

23

Prolonged PR Interval would be?

This is described as?

>0.20 second

1st degree AV Block

24

Formula for QT Interval

What is it called?

QTc = QTa / SquareRoot of (RR x 0.04)

Bazett's Formula

25

Abnormal QT Interval

>0.44

26

Non-Pathologic Q Waves in Pedia

Less than 2 small squares deep
Less than one small square wide
< 25% of the amplitude of the corresponding R wave

27

T Wave is Positive or Negative between 1 week and adolescence?

Negative

28

What does a U Wave indicate?

Repolarization of Purkinje Fibers

29

When is a U Wave abnormal?

Taller than 2 mm

Suggestive of Hypokalemia