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EP > Role Of EPs in Diagnosis and Treatment > Flashcards

Role Of EPs in Diagnosis and Treatment Flashcards

1
Q

Why do EPS

A

To characterise physiological and pathological properties of all structures and conduction systems of the heart

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2
Q

3 Types of Indication Categories

A

Diagnostic / Prognostic / Theraputic

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3
Q

How does it Diagnose?

A

Establishes causes and identifies arrhythmias

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4
Q

How is it prognostic

A

Directs future therapy and assesses SCD risk

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5
Q

How is it theraputic

A

Ablations/Drugs/Device for relief from symptoms

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6
Q

4 Contraindications

A 
Bleeding disorder
Unstable Angina
Uncontrolled HF
Non Co-operative patient 
Groin Infection
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7
Q

4 Complications

A 
Air Embolism 
TIA
Dissection / Spasm / Thrombosis 
PV stenosis
Oesophageal Fistula
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8
Q

Which two views are commonly used in EPS

A

LAO / RAO

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9
Q

What is LAO otherwise known as

A

Binocular view - shows MV & TV face on

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10
Q

Why use RAO view

A

Shows RA on top of RV, depth

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11
Q

What are the 3 types of arrhythmia mechanisms

A

Re-entry / Triggered / Automatic

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12
Q

Is re-entry the most common mechanism

A

Yes

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13
Q

Which two mechanisms are difficult to induce in EP lab

A

Automatic / Triggered

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14
Q

What percentage of all Arrhythmias are Automatic

A

10%

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15
Q

Which mechanism is associated with leakage of positive ions

A

Triggered

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16
Q

At what point during an action potential do Ion leaks in Triggered activity typically occur

A

Early Stage 3 or Late Stage 4

17
Q

What 3 things can exacerbate Automatic activity

A

Hypoxia, Ischemia or electrolyte imbalances

18
Q

Which APs are catecholamine dependent

A

DADs (Phase 4)

19
Q

Which APs are Pause dependent

A

EADs (Phase 3)

20
Q

Do DADs have a normal ECG appearance

A

YES

21
Q

Name 3 ECG changes with EADs

A

Long QT, Distorted T-wave and U-wave

22
Q

How can you treat DADs

A

With B-Blockers or CA+ channel Blockers

23
Q

How can you treat EADs

A

Anything to reduce duration of AP

EP (8 decks)

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