Cardiology Flashcards
STEMI management
M - morphine 5-10mg IV + antiemetic - metacloperamide 10mg
O - O2 aim for highest possible start at 15l if unwell
N - GTN 2 puffs/sublingual
A - aspirin 300mg
C - clopidogrel 300mg
STEMI Investigations
12 lead ECG
Bloods: U+Es, troponin, glucose, cholesterol, FBC
CXR
Shock management
ABC - high flow O2
Raise feet
IV access - 2 wide bore cannula
Fast crystalloid infusion
Catheterise, central line if needed
Ix: FBC, U+E, ABG, cross match, cultures, ECG, CXR
careful not to fluid overload in cardiogenic shock
SVT:
Management
- Vagal manoeuvres (breath holding, carotid massage)
- IV adenosine (or verapamil for asthmatics)
Or DC cardiovert if haemodynamically unstable
Torasades de points
VT with varying axis
Crazy ECG
Caused by high QT interval, from anti arrhythmics, hypokalaemia
Tx: IV mag sulphate
VT:
Management
- Amiodarone 5mg
2. DC cardiovert
Left-sided Heart Failure:
Causes and features
Sx: dyspnoea, poor exercise, fatigue, PND, nocturnal cough, pink frothy sputum, cadriac wheeze, muscle wasting, cold peripheries
Right-sided Heart Failure:
Causes and features
Causes:
- pulmonary stenosis, lung disease
Sx: peripheral edema, ascites, anorexia, facial engorgement
Leads:
II, III, avF
Inferior
Leads:
I, aVL, V5, V6
Lateral
Leads:
V3, V4
Anterior
Leads:
V1, V2
Septal
First degree heart block
> 200ms (5 small squares) P-R interval
If really marked p wave gets lost in previous ST
Second degree mobitz type 1
Wenkelback phenomenon, gets progressively longer then drops the beat
Second degree block, mobitz type II
2:1 or 3:1 ratio
Third degree heart block
No relation between atrial and ventricular activity
Wolff Parkinson White
Congenital accessory pathway between a and v
Short PR interval but wide QRS complex due to slurred upstroke delta wave
Present like SVT
Treat with ablation
Multi focal atrial tachycardia
Most commonly COPD
Irregularly irregular with loads of p waves
Treat - correct hypoxia/hypercapnia, verapamil or beta blocker if HR remains high
Cardiac tamponadep
Accumulation of pericardial fluid raises intra-pericardial pressure➡️ poor ventricular filling ➡️ poor cardiac output
Cardiac tamponade:
Causes
Pericarditis Aortic dissection Haemodialysis Warfarin Cardiac biopsy
Cardiac tamponade:
Signs
⬆️pulse ⬇️BP Pulsus paradoxus ⬆️JVP (rises on inspiration, no Y) Muffled heart sounds
Beck triad
For diagnosis of cardiac tamponade
Falling BP, rising JVP, small quiet heart
Cardiac tamponade:
Tx
Referral for urgent drainage
Slow rise pulse:
Sign of
Aortic stenosis
Pulsus paradoxus:
Causes
Severe asthma
Asthma Tamponade
Slow-rising pulse:
Causes
Aortic stenosis
Collapsing pulse:
Causes
Aortic regurg
PDA
Hyperkinetic state
Pulsus alternans:
Cause
Severe LVF
Jerky pulse:
Cause
HOCM
ST elevation:
Causes
MI Pericarditis LVA Prinzmetals angina (Hyperkalaemia)
Aortic dissection:
Signs and symptoms
Severe tearing chest pain, radiates to back Unequal BP in arms Widened mediastinum Hemi/paraplegia Anuria
ASD:
Types
Patent foremen ovale
Ostium primum/secundum
ASD:
Examination findings
Ejection systolic murmur
Split second heart sound (loudest over pulmonary area)
Acyanotic
Often asymptomatic
VSD:
Examination findings
Severe heart failure in infancy/asymptomatic
Harsh pansystolic murmur at LSE
Pulmonary HTN
Long QT syndrome:
Causes
Congenital
Drug induced (amiodarone, TCAs)
Electrolyte imbalance
MI, SAH
CHADS2VASC
Congestive Heart Failure HTN >160 Age 65-74 Diabetes Stroke/TIA Vascular disease Age >75 Sex
Sex
Hypokalaemia:
ECG findings
T wave inversion and U wave (swooping curvy after qrs)