Medicine: Rapid Interpretation: Hypertrophy

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created 9 years ago by jgaversa5
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updated 9 years ago by jgaversa5
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1

what does hypertrophy refer to usually

increase in size (muscle mass in this case

2

what does the hypertrophy of a chamber of the heart refer to

increase in thickness of wall of that chamber

3

does hypertrophy usually change the volume the heart contains

not usually

4

does the P wave represent the contraction of both atria

yes basically

5

can we look at the P wave for evidence of hypertrohpy

yes

6

what lead is directly over the atria

lead V1

7

is the electrode V1 on the chest positive or negative

positive

8

where is V1 placed typically

just to the right of the sternum and 4th interspace

9

what does a diphasic P wave look like

both positive and negative (almost looks like a sine wave)

10

what is the diphasic P wave characteristic of

atrial hypertrophy

11

what do we still need to find out if we find a diphasic P wave

which atrium is hypertrophied

12

if the initial component of a diphasic P wave in V1 is largest, which atrium is hypertrophied

right

13

if the terminal portion of the diphasic P wave in V1 is largest, which atrium is hypertrophied

left

14

is the S wave or R wave in V1 usually larger

S wave

15

is the QRS in V1 mainly positive or negative

negative

16

why is the QRS in V1 mainly negative

because ventricular depolarizatoin is moving away from V1 electrode

17

when is there a large R wave in V1

right ventricular hypertrophy

18

why wouuld the R wave be large in V1 in ventricular hypertrophy

right ventricle is very thick so there is much more positive deplarization toward the V1 electrode

19

is the S wave in lead V1 bigger os maller than the R wave in right ventricular hypertrophy

smaller

20

in RVH, does the large R wave of V1 get bigger or smaller in V2 onward

smaller

21

is there often left or right axis deviation in RVH

right axid deviation

22

what is evident in LVH

left ventricular wall is very thick: gives greate QRS deflections

23

which chamber's wall is the thickest

left ventricle

24

how are the features of the hypertrophied LV's QRS complexes

exaggerated in both heigh and depth

25

what is strange about the S wave in LVH in V1

even deeper than it is normally

26

in addition to the deep S curve in LVH what is is there

large R in V5

27

what is lead 5 over

left ventricle

28

what is a quick way to measure LVH from V1 and V5 tracings

mm of S in V1+ mm of R in V5 over 35=LVH

29

what is the T wave LVH characteristic

inverted T wave, asymmetry

30

what are the ideal leads to check for T wave inversion for LVH

V5 and V6

31

what is thpattern of the inverted T wave

gradula downsllope and steep return to baseline

32

ok so for RA hypertrophy what lead are you looking in

V1

33

for LA hypertrophy what lead are you looking in

V1

34

for RV hypertrophy what lead are you looking in

V1

35

for LVH what lead are you looking in

S wave V1
R wave V5