1 - Chest pain Flashcards
What conditions are included in acute cornary syndrome?
Unstable angina, Non-STEMI, STEMI
Sudden onset of chest pain indicates…
Pulmonary embolism
Feeling of “severe ripping” radiating between the scapulars indicates…
Aortic dissection
Where does chest pain relating to ACS refer to?
Left arm, neck and jaw
What is angina (pectoralis)?
Discomfort of the chest and adjacent areas caused by myocardial ischaemia.
What is typical angina?
All 3 of: - discomfort in chest or neck, shoulder, jaw , arm - precipitated by physical exertion - relieved by GTN after 5 minutes
What is atypical angina?
2 of: - discomfort in chest or neck, shoulder, jaw , arm - precipitated by physical exertion - relieved by GTN after 5 minutes
Risk factors for coronary artery disease (same for peripheral artery disease)?
- Age - Gender - Diabetes - hyperlipidemia - smoking - hypertension
Describe an aortic stenosis murmur
- Ejection systolic - crescendo-decrescendo - left sternal edge, 2nd intercostal - refers to carotid
Describe a mitral regurgitation murmur
- Pan systolic - constant through s1 to s2 - radiates to axilla
Describe a mitral stenosis murur
- mid diastolic - though to s2 - apex with patient in left lateral position
Describe an aortic regurgitation
- Early diastolic - diminuendo from S2 - left sternal edge 4th intercostal
MI affecting of papillary muscle leads too…
mitral regurgitation –> atrial dilation –> pulmonary hypertension –> pulmonary oedema –> crackle upon auscultation Atrial dilation can also lead to atrial fibrillation
What are the consequences of myocardial infarction?
Decreased contractility - Hypotension –> worsening ischaemia - blood stasis –> embolism Electrical instability - Arrythmias Necrosis - mitral/ tricuspid regurgitation - cardiac tamponade (heamoperricardium) - ventricular septal defect
What is the management of suspected ACS?
- 300mg of aspirin - 12 lead ECG - Blood test: Troponins
How to diagnosing myocardial infarction.
- raised troponin - + 1 more of: - symptoms of ischaemia - thrombus in angiogram - echo of infarct - pathological Q wave - ST changes
What scoring system is used for Ischaemic risk?
GRACE
What scoring system is used for bleeding risk?
CRUSADE
What does RILE stand for in relation to heart murmurs
- Right - Inspiration - Left - Expiration
MI can lead to papillary muscle dysfunction causing the pathology of which murmur?
- mitral regurgitation This leads to left atrial dilation (atrial fibrillation) and therefore pulmonary hypertension and therefore pulmonary oedema.
What is the most common pathology of a ejection systolic murmur?
Calcification of the aortic valve leading to aortic stenosis
ROMANCE
R - eassurance O - xygen M - orphine A - sprin N - nitrates C - lopidogrel (tricargelor) E - CG
MONC
M - orphine O - xygen N - itrates C - opidogrel
Treatment for STEMI/NSTEMI
PCI from 12 hours of onset and within 120 mins of admission, otherwise fibrinolysis.
Which is most common NSTEMI or STEMI?
NSTEMI
What indicates a STEMI on ECG?
- ST elevation - peaked T waves followed by inverted T waves - new Q waves
Indication to call ambulance after using GTN:
- try 2 twice - wait 5 mins - after 15 mins call ambulance
What other causes of MI are there apart from artery occlusion?
- Aortic stenosis - Hypertrophic Cardiomyopathy (HOCM) - Tachyarrythmias - Cocaine use - Anaemia -Thyrotoxicosis
What is the long term management of ACS?
- aspirin for lyfe - DAPT for 12 months - statins - < 40% LVEF then add ACEi and B-blocker
Patient has chest pain with no ST elevation on ECG however has a marked increase in troponin. What is the diagnosis?
NSTEMI
ΔΔ PE
- sudden onset pleuritic pain - associations: fever, SoB and haemoptysis - may notice unilateral swollen, hot, tender leg
What is pleuritic pain?
Pain made worse by inspiration
What diagnosis have pleuritic pain?
- PE - pneumonia - tension pneumothorax - pericarditis
ΔΔ GORD
- burning sensation - worse when lying down, after eating, leaning forwards - sour taste in mouth - relieved by swallowing and water.
ΔΔ pericarditis
- relieved by leaning forward - worse when lying down
What is a thrill?
A palpable murmur
What risk factors included for clotting/ PE?
- pregnancy - stasis -previous clotting event - smoking - surgery - malignancy - Varicous veins - DVT
1st degree heart block
PR interval > 0.22
Mobitz type 1
- 2nd degree heart block - progressively longer PR interval
Mobitz type 2
- 2nd degree heart block - intermittent conduction of P waves
3rd degree heart block
- no condition of P waves
Right bundle branch blocks
MaRRoW QRS pattern: - M in V1 - W in V6
Left bundle branch block
WiLLiam QRS pattern: - W = V1 - M = V6
Reporting a ECG
- Rythmn - Conduction interval - Cardiac axis - QRS complex - ST and T waves
Normal PR interval
0.12 - 0.22s
Normal QRS
< 0.12s
normal QT interval
around 0.4s
Inferior ECG leads
- III - aVF Right coronary artery
Lateral ECG leads
- I - II - aVL Left circumflex
Anteriorlateral ECG leads
- V4-6 - I -aVL left circumflex
Anetior septal
- V1-4 LAD
Posterior
- Tall T waves in V1-2 Right coronary and left circumflex
How do T waves change from the time the MI occurs
- early T waves are peaked - T waves become inverted
Where is Q wave most prominent?
V6 - left ventricle depolarises first
Characteristics of QRS in V1
- no Q wave - R wave should be prominent
Transitional point of an ECG
Deviation of the Q and R waves should be equal from the isoelectric point. Should be in V3-4. Indicates cardiac axis deviate
ECG features of AF?
- no P waves - irregular QRS activation - normal chape QRS
ECG features of ventricular fibrillation?
- no discernible QRS pattern
ECG features of ventricular tachycardia?
- no P waves - QRS are frequent and broad - no T waves
ECG features of supra ventricular tachycardia?
- many P waves - NOT sinus rhythm
How can carotid massage stop supraventricular tachycardias?
Stimulates vaso-vagal responce to slow the heart rate
In normal ECGs where can T waves be inverted?
- aVR - V1
Which mumur is related to a narrow pulse pressure which is slow rising?
Aortic stenosis
Which mumur is related to a wide puse pressure and a collapsing pulse?
Aortic reurgitation
Apart from GTN, what is 1st line management for angina?
ß-blocker or CCB
What is the second line for management of angina?
ß-blocker and a CCB
When a patient is suffering from angina with heart failure what is the recommended 1st line therapy?
Atenolol