Cardiology Flashcards
Management of STABLE angina
- GTN spray (stat then 5 mins)
- Aspirin
- statin
- ACEi If any comorbidities (HF, T2dM)
- BB or CCB for symptom management
Refer to cardiology for stress testing. May need PCI or CABg if multivessel involvement or not improving on medical therapy
Can also use nitrates instead of BB for sx managmenet
Management of unSTABLE angina
immediate referral to hospital and let cardiologist or gen med know
- Load with aspirin
- Load with clopidogrel if ischaemia on ECG
- Give GTN (if BP allows)
- Give O2 only if <93 sats
- monitor obs
remember unstable angina falls under the umbrella term of ACS
ECG changes with angina vs NSTEMI vs STEMI
Angina: Temporary ST-segment depression or T-wave inversion during episodes, with normalization afterward.
NSTEMI: Persistent ST-segment depression and/or T-wave inversion without ST-segment elevation.
STEMI: significant ST-segment elevation, possible new Q-waves, and dynamic T-wave changes, reflecting a full-thickness infarction.
Immediate management of NSTEMI
ABCDE
Refer to hospital ASAP - let cardio/gen med know
Load with aspirin
GTN for pain relief +/- morhpine
Consider O2 only if <93%
They will be considered for angio and anticoagulation, then a decision made re medical vs revascularisation tx (PCI or CABG)
Immediate management of a STEMI
ABCD
Call PCI able hospital ASAP - stemi protocol
Load with aspirin
Load with clopidogrel (if ECG changes or trop raise)
GTN spray
Analgesia
- if PCI hospital is >2hrs away discuss option of fibrinolysis
Secondary prevention treatment of ACS
Split into lifestyle and pharmacologic
Lifestyle
- stop smoking
- cardiac rehab
- exercise and weight loss
- Reduce alcohol
Pharmacologic
- DAPT for 12 months, then aspirin ongoing
- Statin indefinately
- ACEi (ARB if intolerant)
- BB (or CCB if intolerant) for 12 months, if HFrEF then indefinate
+/- aldosterone antagonist if any HFrEF
Timings to know with STEMI treatment
offer Angiography: If presenting <12 hours and PCI hosp is <2hrs away
Consider fibrinolysis if presenting >12 hours of symptoms or PCI hosp is >2hrs away
How to investigate a patient with new stable AF
ECG
Bloods: TFTs, UEs, INR/coags, FBC
CHADsVASC and HASBLED scores
Request OP ECHO
then bring back ASAP to start management
Management of UNstable AF or if <12 hours since sx onset
Unstable meaning HF, chest pain, hypotension, syncope
ABCD
Refer to hospital under Gen med
If <48 since sx onset discuss cardioversion with Cardio
if it has been over 12 hrs since onset risk of thromboembolic events is high and rate control is preferred
Management of new stable AF
if definitely <12 hours consider ref for cardioversion, otherwise:
- Bloods (FBC, UEs, Coag, TFTs, LFTs)
- treat any reversible causes
- Refer for OP ECHO
- consider Anticoagulation (dabigatran, rivaroxaban, warfarin)
- pending on chadsvasc/hasbled
5a. Rate control (BBs, dihydro CCB or digoxin) OR
5b. Rhythm control (cardioversion or antiarrhythmics)
- rate control is preferred as cardioversion has a high recurrence rate/risk of thromboembolic events and AAMs have lots of SE’s
- target HR <80bpm rest, 110bpm walking
stop DAPT if starting anticoagulation due to bleeding risk unless unstable IHD
Which anticoagulant is preferred for AF and why
Dabigatran preferred due to lower risk of ICH and reversal agent idacruzimab (CrCl >50mL)
rivaroxaban CrCl >15
Warfarin – The only approved agent for patients with a moderate to severe mitral stenosis, mechanical heart valve, or with creatinine clearance ≤ 15.
CHA2DS2 VASc
C: Congestive heart failure (1 point)
H: Hypertension (1 point)
A: Age ≥75 years (2 points)
D: Diabetes mellitus (1 point)
S: Stroke/TIA/Thromboembolism (history of) (2 points)
V: Vascular disease (1 point)
A: Age 65–74 years (1 point)
Sc: Sex category (female sex) (1 point)
Total Score Interpretation:
0 points: Low risk (consider no anticoagulation
1 point: consider anticoagulation
≥2 points: strongly consider anticoagulation
risk of stroke without AC
HASBLED score
bleeding risk for those considering anticoagulation
HTN
Abnormal renal and liver dysfunction
Stroke
Bleeding
Labile INR
Eldery >65
Drugs or alcohol
Side effects of nitrates
hypotension
tachycardia
headaches
flushing
many patients who take nitrates develop tolerance and experience reduced efficacy
What type of MI (location and vessel involved) can cause arrhythmia after and why
Inferior (II, III, aVF)
Right coronary artery
RCA supplies the AV node so can cause arrhythmias