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Flashcards in Fundamentals Deck (20):
1

Automaticity means

Spontaneous depolarisation

2

Resting membrane potential of P-cells is

-50 to -60mV

3

Is progression of SND to CHB high or low

Low

4

3 side of Triangle of Kock

CS Os
Antero-septal leaflet structure
Tendon of Todaro

5

Sarcoidosis or giant cell myocarditis accounts for what percent of unexplained AV block in <55yr

25%

6

Which type of 2nd degree AVB is likely to progress to CHB

Mobitz II

7

Are 1st degree and asymptomatic 2nd degree I indications for pacing?

No

8

Does asymptomatic Mobitz II indicate pacing?

Yes - high level of progression

9

If symptoms are due to AV block, should we permanently pace?

Yes

10

4 examples of reversible AV block

Lyme Carditis disease
Drug toxicity
Vagotonia
Hypoxia

11

What predicts whether bifascicular block will advance to CHB?

Symptoms are strongest predictor

12

Does pacing for bifascicular block improve mortality

No, only improves symptoms.

13

What is an assassin bug

Triatominae or Kissing bug - spreads Chagas disease

14

Chagas is prevalent where

Central and south america

15

Chagas acute heart infection lasts for how long

4-8wks

16

How long till Chagas heart disease surfaces

10-20yrs - established in blood test

17

What carries Lyme disease

Ticks

18

How long does Lyme disease last without medial intervention

Normally resolves within 4wks

19

What percentage of Lyme infected develop cardiac problems

5% (50% of which is AV block)

20

What is the manifestation of Lyme cardiac problems

Varying degrees of AV block - Normally reversible - NO PERMANENT PACING