AF Flashcards
(9 cards)
1
Q
Atrial fibrillation ECG
A
- No P waves
- QRS complexes are irregular
- QRS complexes are narrow
- HR: 100-175 bpm
2
Q
What is the aetiology/ pathogenesis of AF?
A
Pathogenesis
- Stress to the atria leads to tissue heterogeneity
- Leads to tissues with different properties so different conduction rates
- Instead of having one large contraction have lots of small contractions
- leads to Ventricular irregularly irregular contractions
Aetiology : mrs SMITH
- Sepsis
- Mitral valve
- ISH
- Thyrotoxicosis
- Hypertension
3
Q
Symptoms of AF?
A
- Palpitation
- Chest pain
- SOB
- syncope
4
Q
Complications of AF
A
- Irregularly irregular ventricular contractions
- Tachycardia
- HF- poor filling of ventricles during diastole
- Risk of stroke
5
Q
Treatment for AF?
A
Rate control/ Rhythm control Rate control: want to lower HR in order to allow ventricles more time to fill before pumping blood out - beta brockers - CCBs - Digoxin
Rhythm control
- Cardioversion: return to sinus rhythm
Also
- Anticoagulation- prevention of thrombus
- Warfarin
6
Q
Two types of Cardioversion?
A
- Pharmalogical : Amiodarone/ Flecanide
- Electrical : sedation + cardiac defibrillator
7
Q
Indications for cardioversion
A
- AF is of new onset
- AF is causing HF
- There is a reversibility to AF
8
Q
What is paroxymal AF?
A
Recurrent episodes of AF that come and go
Treated with flecanide
9
Q
What score should be used to assess if AF patients should be on anticoagulants
A
CHAD2-VASC> 1
