Chest Pain Flashcards
Features of cardiac chest pain
Central crushing Radiating to left arm / jaw Relief by GTN Can be brought on by exertion (2/3 atypical chest pain) (0/3 non cardiac chest pain)
What does GTN act on?
Smooth muscle
Investigations for NSTEMI
FBC (anaemic to check before any antiplatelets) Kidneys (contrast testing) Glucose Cholesterol Troponin
Treatment of NSTEMI
Dual antiplatelets - Aspirin - clopidogrel - ticagrelor <90% O2 sats then O2 Morphine Nitrates
Treatment of NSTEMI if first lot of treatment doesn’t help
- Statin (atorvastatin 80mg)
- ACEIs
- BBs (early)
Why should oxygen use in chest pain be used cautiously?
Risk of vasoconstriction in hyperoxaemia
What happens if a patient comes in which an NSTEMI, who is already on rivoroxaban/warfarin?
Just add aspirin - NOT dual
- wait for toponin before aspirin as bleeding risk goes up
What are the driving regulations with MI?
4 weeks ban if no intervention
1 week ban if intervention e.g. stent
Diagnostic criteria for ECG for STEMI
2mm ST elevation in chest leads or 1mm elevation in inferior leads
What are the chest leads?
V1 - V6
What is given in an MI if no way of PCI?
Altepase
What should STEMI patients never be given?
Fondaparinaux
What should be done if a patient presents with a fine ECG, -ve troponin and a pain that is not completely cardiac?
- Repeat troponin at 12 hours
- CXR
- Stress test; MPS and ETT, possibly CTCA
- Treat if think angina
What is the commonest differential system for chest pain if not cardio?
GI
Features of PE chest pain
Pleuritic
- sharp
- worse on inspiration
Investigation for PE
Wells score
Low risk; D dimer
High risk; CTPA + V/Q scan
Treatment of PE
After diagnosis made - LWMH or fondaparinux (continued for 5 days or until INR > 2 for 24 hours)
Warfarin given within 24 hours of diagnosis and continued for 3 months (unprovoked)
If on antiplatelet and no recent stent, usually stop this
With active cancer continue LWMH for 6 months
Massive PE - thrombolysis
How long should the treatment for PE continue?
3 months (depends if reversible cause)
What should be given in pregnancy for PE?
LWMH
If there is FH of DVT/PE. what should be done?
Thrombophilia screening