GP Flashcards
(94 cards)
What is atrial fibrillation?
Chaotic irregular atrial arrhythmia
What are the different types of atrial fibrillation?
Permanent: Cardioversion ineffective
Persistent: >7 days
Paroxysmal: <7 days
What is the clinical presentation of atrial fibrillation ?
IRREGULARLY IRREGULAR PULSE
Dyspnoea
Chest pain
Hypotension and tachycardia: palpitations
Syncope
What are the investigations for atrial fibrillation?
ECG: F fibrillatory waves, absent P and a waves, irregularly irregular narrow QRS complexes
CHADVASc score: assesses risk of stroke in AF + when to start anticoagulation
- 0: no anticoagulation + Aspirin alone
- 1: consider anticoagulation + Aspirin
- >1: offer anticoagulation (Warfarin) + Aspirin
What is the management for atrial fibrillation ?
- Rate control: beta-blocker (e.g. bisoprolol), CCB (not in HF) and digoxin (BCD)
- Rhythm control: return to normal sinus rhythm through cardioversion
Anticoagulation: asprin and Warfarin
Thrombin or Factor 10A inhibitor
Reduce Stroke risk
What are the 2 types of Cardioversion in AF?
Electrical DC
Pharmacological: Amiodarone
What are the risks of Cardioversion?
Embolism
Only attempt if symptomatic for >48 hours + long period of anticoags
How do you measure Stroke risk in AF?
CHA2DS2VASc
Score (/9):
- Congestive heart failure
- Hypertension
- Age
- 65-74 =1
- ≥75=2
- Diabetes
- Stroke/TIA
- Vascular disease
- Female
What is hypertension?
> 140/90: clinic
> 135/85: ambulatory
What are the causes of hypertension?
Primary (essential): no known cause
Secondary: a known underlying cause
ROPE
Renal disease
Obesity
Pregnancy
Endocrine (primary hyperaldosteronism, most common cause)
White coat syndrome
What are the causes of paediatric HTN?
Renal parenchymal disease (majority)
CoA
What type of HTN is most common?
Essential
How is HTN measured?
BP reading:record BP in both arms
Ambulatory blood pressure monitoring (ABPM)
Home blood pressure monitoring (HBPM)
How would you perform a HBPM?
Two consecutive measurements 1 minute apart
Patient seated
BD for 1 week
DO NOT INCLUDE 1ST DAY MEASUREMENTS (INACCURACY)
How would you perform a ABPM?
2/hr during waking hours
14 readings a day
What are the 3 stages of hypertension?
1 =
Clinical- >140/90
ABPM - >135/85
2=
Clinical- >160/100
ABPM - >150/95
3 = 180/110
How would you assess for end organ damage in hypertension?
Fundoscopy: hypertensive retinopathy
ECG: LVH or IHD
Urine dip: renal disease
What is the management for hypertension?
ABCD
Step 1
> 55 & stage 2 or above → ACEi
> 55 OR of black/African Caribbean → CCB
Step 2
ACEi / ARB + CCB (ACEi ARE CONTRAINDICATED IN BLACK/AFRICAN CARRIBEAN PEOPLE)
Step 3
ACEi/ARB + CCB + Thiazide diuretic
Step 4
Resistant HTN
Consider other drugs: sodium nitroprusside in emergencies
What would you do if a patient reaches stage 4 of hypertension management?
Resistant HTN:
Confirm elevated BP
Assess for postural Hypotension
Discuss Adherence
Potassium <4.5: low dose spironolactone
Potassium >4.5: AB or BB
How is hypertension monitored?
Treatment targets:
* < 80 yrs: <140/90
* > 80 yrs: 150/90
* CKD, previous stroke and diabetes: >130/80
Monitor U&Es regularly when using ACEi and diuretics
What are the side-effects of ACEi?
Cough
Angioedema
Hyperkalaemia
What are the side-effects of CCB?
Ankle swelling
Headache
Flushing
What are the side-effects of thiazide diuretics?
Hyponatraemia
Hypokalaemia
Dehydration
What are the side-effects of ARB?
Hyperkalaemia