Cardiology Flashcards
What additional clues might point you towards the indication for a midline sternotomy scar?
Metallic click - metallic valve Murumr - tissue valve/valvotomy Leg scar - CABG Old scar young patient - congenital heart disease Immunosuppression - transplant Nil else - trauma, tissue valve, CABG
What are the cardiac causes of clubbing?
Atrial myxoma
infective endocarditis
Congenital heart disease
What might cause a collapsing pulse?
Aortic regurgitation
Thyrotoxicosis
Anaemia
What might cause an impalpable apex beat?
COPD
COPD
Obesity
Pericardial effusion
Dextracardia
What are the features of pulmonary hypertension?
Raised JVP Peripheral oedema Left psternal heave Pulsatile hepatomegaly Loud P2 and PSM of TR
What are the examination findings of aortic stenosis?
Pulse - slow rising, narrow pulse pressure
Precordium:
Pacemaker
Forceful non-displaced apex
ESM in R 2nd ICS radiating to carotids
What are some cauess of aortic stenosis?
Senile calcification
Bicuspid valve
Rheumatic fever
What might be some differentials for aortic stenosis?
Sclerosis
MR
HOCM
PS
What are the clinical features of severe AS?
Angina
Dyspnoea
Syncope
How would you investigate AS?
ECG - LVH, arrhythmias
Bloods - FBC, UnE, BNP, Lipids, glucose
CXR - Calcification, LVH, pulmonary oedema
Echo - LV function, underlying cause
What is the management of AS?
Gen - MDT, CV risk, monitor
Surgical - Valve replacement +-CABG if symptomatic
Also - TAVI, balloon valvuloplasty
How would you accentuate the murmur heard in AS?
Sat forward in end expiration
What are the examination findings in MR?
Pulse - AF
Displaced apex
Soft S1 loud S2
Blowing PSM loudest in apex radiating to axilla
How would you accentuate the murmur heard in MR?
Left lateral position in end expiration
What differentials might you give for MR?
AS
VSD
What are the common causes of MR?
LV dilatation
Calcification
Rheumatic heart disease
Mitral valve prolapse
What investigations would you do for MR?
ECG - LVH, arrhythmia, p-mitrale (bifid)
Bloods - FBC, UnE, BNP, lipids, glucose
CXR - Cardiomegaly, calcification, pulm oedema
Echo- assess function
What is the treatment for MR?
Gen - MDT, CV risk, monitor
Med - AF rate control and anticoagulate
Surg - Valve replacement if symptomatic
What eponymous signs might you see in AR?
Quincke's - capillary pulsation in nailbed De Musset's - head nodding Corrigans - vigorous carotid pulsation Traube's - pistol shot femorals Mueller's - systolic uvular pulsations Rosenbach's - pulsatile liver
What other findings are seen in AR?
Collapsing pulse Wide pulse pressure Displaced apex S3 High pitched EDM loudest at LLSE May also have ESM
How would you accentuate the murmur heard in AR?
Sitting forward end expiration
What are the common causes of AR?
Bicuspid aortic valve
Rheumatic disease
Ankspo/RA
CTD e.g. Ehlers Danlos, Marfan’s
What investigations would you do for AR?
ECG - LVH/strain
Standard bloods
CXR - Cardiomegaly, pulmonary oedema
Echo
What is the management of AR?
Gen - MDT, CV risk, monitor
Reduce afterload - ACEi/Bblockade/Diuretics
Surg - valve replacement if symptomatic
What examination findings might you find in a patient with MS?
Face - Malar flush
Pulse - AF
Precordium - Left heave, tapping non displaced apex,
MDM in apex radiating ot axilla
How would you accentuate the murmur heard in MS?
Left lateral position in end expiration - listen with the bell
What are some causes of MS?
Rheumatic fever by far commonest
Also prosthetic/congenital valves
What investigations might you do for MS?
ECG - AF, p-mitrale
Usual bloods
CXR - LA hypertrophy, calcification, pulm oedema
Echo
What is the management of MS?
Gen - MDT, CV risk, monitor
Consider RhFever prophylaxis (PenV)
AF rate and anticoagulate
Surgery - Valve replacement/balloon plasty
What is the pathophysiology of rheumatic fever?
Ab cross reactivity with myosin following Strep pyogenes infection.
Aschoff bodies
What criteria must be met for diagnosis of RhF?
Revised Jones
Evidence of GAS infection + 2maj OR
1 maj + 2 min
What are major Jones criteria?
JONES
Joints - polyarthritis O - pancarditis N - subcutaneous nodules E - erythema marginatum S - Sydenham's chorea
What are the minor Jones criteria?
Arthalgia
Fever
PR prolongation
Raised inflamm markers
What is the treatment of rheumatic fever?
Bedrest Benpen Analhgesia Oral pred if CCF Haldol for chorea
What are the risk factors and organisms associated with acute and subacute infective endocarditis?
Acute RFs - IVDU, immunosuppression, wounds
Acute bugs - s. aureus, s. epidermis
Subacute RFs - Valve prostheses, MR
Subacute bugs - S. viridans, s. bovis
What are the clinical features of subacute infective endocarditis?
Hands - Splinter haemorrhages Osler's nodes Janeway lesions Clubbing
Other - Roth spots Fever Splenomegaly Haematuria
Cardiac -
New/changing murmur
What diagnostic criteria must be met for a diagnosis of infective endocarditis?
Dukes criteria
2 major OR
1 major 3 minor OR 5 minor
What are the Dukes major criteria?
+ve blood culture in 2 separate cultures
Endocardial involvement
What are the Dukes minor criteria?
Fever Predisposition (cardiac lesion, IVDU) Emboli Immune Fx 1 +ve blood culture
What is the management of IE?
Fluclox + gent Or
BenPen + Gent
What might a left lateral inferior thoracotomy scar indicate?
MV repair/valvotomy
Aortic vs mitral valve replacement on auscultation?
Aortic - Lub click
Mitral - Click lub
What are the key differences between and when would you use a mechanical valve and when a biological valve?
Mechanical valves last longer and require lifelong anticoagulation, so are used on younger patients and on those already on anticoagulants (e.g. AF)
Biological valves are less durable and only require aspirin not warfarin. They are used in older patients and women of child bearing age.
What are the possible complications of having a valve replacement?
Surgical mortality Thromboembolism Anaemia (warfarin and haemolysis) IE Bleeding Failure
What are some common causes of AF?
MS Thyrotoxicosis IHD Rh Fever HTN Pneumonia Hypokalaemia PE
What investigations would you do in a patient with AF?
ECG - irreg irreg, no p waves
Bloods - FBC, (pneumonia), UnE (lowK), TFT, Trop, D-Dimer
CXR - oedema, calcification, pneumonia
Echo - valve dysfunction
What is the management of acute AF?
If haemodynamically unstable ->cardiovert If stable -> Rate control with B blocker Start LMWH Chem cardiovert (flec or amiodarone)
What is the management of longstanding AF?
Use CHADSVASC score to assess stroke risk then (if necessary) anticoagulate with Apixaban etc or Warfarin
Rate control with beta blocker or CCB
What are the components of the CHA2DS2VASc score?
CCF HTN Age >75- 2 points DM Stroke/TIA- 2 points Vascular disease Age 65-74 Sex female
What rare the result cut offs for CHADVASC?
0- Aspirin
Not 0 - Warfarin/DOAC
What are some contraindications to warfarin therapy?
Coagulopathy Compliance issues Fall risk PUD Pregnancy
What are the possible complications of warfarin therapy?
Bleeding
Osteoporosis
Give some indications for permanent pacing
Complete AVA block Mobitz type 2 Symptomatic bradycardia Drug resistant tachyarrhythmias CCF
What are the different types of pacemakers?
Single lead
Dual lead
Biventricular
Implantable defibrillator
What are some complications of pacemaker insertion?
Insertion - bleeding, arrhythmia
Post insertion - Erosion, lead migration, infection, malfunction
What are some common causes of left heart failure/
- IHD
- Idiopathic dilated cardiomyopathy
- Systemic HTN
- Mitral/aortic valve disease
What are some common causes of right heart failure?
Left heart failure
Pulmonary hypertension
Tric/pulm valve disease
What are the signs and symptoms of left heart failure?
Signs: Cyanosis AF Cardiomegaly w displaced apex S3 gallop tachy Wheeze Creps
Symptoms: Dyspnoea on exertion fatigue Orthopnoea + PND Nocturnal cough
What are the signs and symptoms of right heart failure?
Raised JVP Pulsatile hepatomegaly Pitting oedema Ascites Anorexia& nausea
What are the Xray features of chronic heart failure?
ABCDEF
Alveolar shadowing Kerley B lines Cardiomegaly Diversion to upper lobes Effusions Fluid
What is the management of chronic heart failure?
Gen: MDT, CV risk, monitor
SPecific:
- ACEi + BBlocker + furosemide
- Add spiro
- Digoxin
- Resynchronisation therary
Surgery
LVAD (external)
Transplant
Which leads and vessels supply the inferior view of the heart?
Leads: II, III, aVF
Vessel: RCA
Which leads and vessels supply the anterolateral view of the heart?
Leads: I, aVL, V5, V6
Vessel: L circumflex
Which leads and vessels supply the anteroseptal view of the heart?
Leads: V2-4
Vessel: LAD
Which leads and vessels supply the anterior view of the heart?
Leads: V2-6
Vessel: Left main stem
Which leads and vessels supply the posterior view of the heart?
Leads: V1-3 (recip)
Vessel: RCA
What might cause broad QRS complexes?
Ventricular initiation
Conduction deficit
WPW
What are some causes of QT prolongation?
TIMME
Toxins - Macrolides, antiarrhythmics, TCAs, antihistamines Ischaemia Mitral valve prolapse Myocarditis Electrolytes (any)
What are some causes of T wave inversion?
Strain Ischaemia Ventricular hypertrophy BBB Digoxin
What are U waves
Occur after T waves in hypokalaemia
What are J waves
Occur between QRS and ST due to:
Hypothermia
SAH
HyperCa
What causes left and right BBB?
LBBB:
Inferior MI
Congenitals
RVH
RBBB: Fibrosis LVH Inf MI Coronary HD
Name and describe some narrow complex tachycardias (SVTs)
Sinus tachy AVNRT - absent p waves, normal QRS AVRT - p waves present, normal/broad QRS Atrial flutter - Saw toothed baseline with ratio AF- irreg irreg
Name and describe some broad complex tachys
VT - no ps, regular wide QRS, no Ts
VF - completely shapeless (V frantic)
Torsades - AM
What are and what causes p pulmonale and p mitrale?
P pulmonale - peaked P wave caused by pulmonary HTN, tric sten
P mitrale - bifid p wave caused by MS
RVH vs LVH on ECG?
RVH - Tall R in V1 and Deep S in V6
LVH - Deep S in V1 and Tall R in V6
What are the ECG findings of Wolf Parkinson White?
Delta wave - slurred upstroke before QURS
What is S1Q3T3?
Deep S wave in lead 1
Pathological Q wave in lead 3
T wave inversion in lead 3
How do hyper and hypokalaemia affect ECG/
HyperK:
Tented T waves
Broad QRS
Absent p waves
HypoK: Flattened T waves ST depression QT prolongation U waves
When and how would you treat a bradycardia?
Treat when symptomatic
- Manage underlying cause
- IV Atropine
- External pacing
May receive permanent pacing if problem recurs
How do you manage an SVT?
- O2 and IV access
- Assess rhythm
2a. Regular rhythm - Continue trace, vagal manouvres, Adenosine 6mg IV bolus
Reasess; If no adverse signs (low BP, HF, LoC, tachy) then digoxin/amiodarone infusion.
If adverse signs then sedate followed by DC cardioversion or Amiodarone infusion
2b. Treat as AF -
Rate control with B blockade
Consider cardioversion w amiodarone if <48 hrs, consider anticoag
How do you manage a VT?
- Assess pulse
a. No pulse -> CPR
b. Pulse -> O and IV access - Assess adverse signs (hypo, tachy, HF, CP, LoC)
a. Yes -> Sedate, DC, Amiodarone
b. No -> Correct electrolyte abnormality and reassess
What are the risk factors for ACS?
Modifiable: HTN Smoking Obesity DM Cholesterol
Non-modifiable Age Ethnicity FHx Gender
What is the progression of ECG changes in STEMI?
Normal ST elevation and hyperacute T waves Q waves (full thickness) ST normalisation T wave inversion
What is the timing of troponin rise in STEMI?
Elevated from 3-12 hours
Peaks at 24 hours
2 high readings required for confirmation
What investigation results point to an NSTEMI over a STEMI?
Positive trop with typical symptoms but no ST elevation
What is the management of STEMI and NSTEMI?
STEMI: PCI or thrombolysis
NSTEMI: Angio +- PCI/CABG
What are the complications of an MI?
Death Passing PRAED st
Death
Pump fa
ilure
Pericarditis (early, fever, positional, saddle STelev) Rupture: LV wall -> tamponade Chordae -> MR w. PSM Septum -> PSM, JVP, HF
Arrhythmias (Tachy or brady) and Aneurysm
Embolism - 3/12 warfarin
Dressler’s -> Pneumopericarditis at 2-6 weeks
What is the management pathway of a STEMI?
- ECG
- Target SpO2 94-98%
- IV access + bloods
- Brief Hx + exam
- 300 Asp 300 Clopi
- Analgesia - MnM
- GTN & B-blockade
- LMWH
- CCU for monitoring
- PCI or thrombolysis
What should be done regarding secondary prevention of MI?
ABCDS + lifestyle
ACEi B-blocker Cardiac rehab group DVT prophylaxis till movile Statin (atorva 80)
Stop smoking, diet, exercise etc.
Clopi continue for 1 month, aspirin is lifelong
What are some non atheromatous causes of angina?
Anaemia
AS
Tachyarrhythmia
Arteritis
What are the different types of angina/
Stable - exertional Unstable - constant Decubitus - on lying Prinzmetal - vasospasm during rest Syndrome X - Angina and ST elevation on exercise but no evidence of atherosclerosis
What secondary prevention is given to patients with angina/
Aspirin 75 OD
ACEi
Statins (simva 40)
Antihypertensives
What symptomatic relieve can be given to angina patients?
GTN spray + either BB or CCB
What is the management of treatment resistant angina?
PCI or CABG
Complications of CABG?
MI Stroke Tamponade Postperfusion syndrome (neurocognitive imp) AF Sternum nonunion Graft stenosis
What is the management algorithm for severe pulmonary oedema?
- Sit pt up
- 15L non rebreathe O2
- IV access, bloods, ECG
- MnM
- 40mg IV furosemide
- GTN
- Hx, CXR, ?echo
- Start nitrate infusion if SBP >100 (aim for >90)
- Consider CPAP, furosemide, nitrates, haemofiltration
- If SBP <100 consider inotropes
What are the causes of flash pulmonary oedema/
Cardiogenic -
MI
Arrhythmia
Fluid overload
Non-cardiogeniic
ARDS
Upper airway obstruction
Neurogenic
What is Beck’s triad and when would you see it?
Hypotension
Raised JVP
Muffled heart sounds
Seen in cardiac tamponade
What is the treatment algorithm for hypertension/
<55
- ACEi
- ACEi +CCB
- ACEi + CCB + Thiazide
> 55 or black
- CCB
- CCB + ARB
- CCB + ARB + Thiazide
What are the causes of a mitral valve prolapse?
Primary myxomatous degeneration frequently in young women
MI
CTD
Turner’s
What are the signs of an MV prolapse?
Mid systolic click +- a late systolic murmur
What are the complications of an MV prolapse?
MR
Stroke
Arrhythmia
What are the causes of tricuspid regurg?
RV dilatation
RhFever
IE
Carcinoid
What are the signs of TR?
Raised JVP Ascites/oedema PSM at LLSE on inspiration Pulsatile hepatomegaly Jaundice
What are the features of tricuspid stenosis?
Fatigue, ascites oedema,
Opening snap
EDM at LLSE on inspiration
What are the featuers of pulmonary stenosis?
Dyspnoea, ascites, oedema
Ejection click
ESM at ULSE on inspiration
What are the causes of acute pericarditis?
Viral, bacterial, fungal
MI (Dressler’s)
Drugs - penicillin, isoniazid
Other - uraemia, RA, SLE, sarcoid
WHat is a classic (and other) sign(s) of constrictive pericarditis?
Kussmaul’s sign - Raised JVP on inspiration
RHF
Hepsplenomegaly
Fluid
What is a classic feature of a pericardial effusion?
Ewart’s sign - large effusion compressing lower lobe causing bronchial breathing at the left lung base
Which three signs are seen in cardiac tamponade?
Kussmaul
Beck’s triad
Pulsus paradoxus (pulse fades on inspiration)
What are the causes of acute myocarditis?
Idiopathic in 50%
Any infection
Drugs - cyclophosphamide, carbamazepine, phenytoin
Autoimmune - GCA, SLE
What are the clinical featuers of acute myocarditis?
Flu like prodrome Dyspnoea, fatigue Chest pain Arrhythmia/palps S4 gallop
What are the investigations and treatment for myocarditis?
ECG - ST elev/dep
T inv
+ve trop, CK elevation
Treat the cause
What is the pathophysiology and inheritance pattern of HOCM?
LVOT obstruction due to septal hypertrophy
AD inheritance - ask re family Hx of sudden death
What are the clinical features of HOCM?
Angina Dyspnoea Palps Exertional syncope Double apex beat ESM @ LLSE
What is the management of HOCM?
Med -
-ve inotropes (BBlock/verapamil)
Amiodarone for arrhythmia
Anticoagulate if AF
Non-med - septal myomectomy if severe
What are the causes of dilated cardiomyopathy?
DILATE
Dystorphy Infection Late pregnancy Autoimmune - SLE Toxins (ETOH) Eosinophilia Neoplasia (Carcinoid)
What are the clinical and investigation findings in DCM?
Clin - Displaced apex Massive JVP S3 gallop Hypotension MR/TR
CXR - c-megaly, oedema
ECG - T inversion
Echo - dilation and hypokinesis
What is the management of DCM?
Bed rest
Diuretics, ACEi, digoxin, anticoagulate
Biventricular pacing
Transplant
What are the complications and features of an ASD?
Eismenger’s syndrome (R->L shunt) due to raised RA pressure
Dyspnoea Pulm HTN Arrhythmia Chest pain AF JVP ESM
How do you diagnose and manage an ASD?
Echo
Transcatheter closure
What are the features of coarctation of the aorta?
RF delay w weak femorals
HTN
Systolic murmur
What how does a VSD commonly present?
Severe HF in infancy or incidentally later in life with harsh PSM at LLSE
What are the components of Tetralogy of Fallot/
VSD
Pulmonary stenosis
Overriding aorta
RVH
How does Marfan’s present?
Cardiac -
Aortic aneurysm/dissection
Aortic root dilatation -> AR
MV prolapse
Ocular - Upper lens dislocation
MSK - High arched palate Pes planus Arachnodactyly Scoliosis Pectus excavatus Hypermobility
What hat might you see on CXR of a Marfan’s pt?
Widened mediastinum
Scoliosis
Pneumothorax
What are the features of Ehler’s Danlos?
Hyperelastic skin
Hypermobility
Cardiac - valves and aneurysms
Fragile vessels and poor healing.