Cardiology Flashcards
Where does the vascular supply of a lobar sequestration usually arise from?
The aorta
What is the name of an anomalous origin of a pulmonary artery branch from the ascending aorta?
Hermitruncus arteriosus
Rendu-Osler weber syndrome is related to what cardiac abnormality?
A-v malformations (hereditary haemorrhagic telangiectasia)
What percentage of CHD at term are VSDs?
30-60% (excluding 3-5% of small musc)
What happens to the second heart sound in Pulmonary HTN?
Loud pulmonary component of S2
Cyanosis with exercise by 5-6 years old with a VSD is called?
Eisenmenger syndrome (reversal of shunt)
Septal and posterior leaflets Tricuspid valve displaced towards apex RV in
Massive cardiomegaly on cxr (dilated RA and RV)
Ebstein anomaly
If WPW can’t comment on hypertrophy
Typical ECG findings inASD?
R axis, rvh, typical rsR or rSR pattern right praetor dial leads and S waves in inferior leads notched
Mid Diastolic low pitched rumble at apex with severe AR called
Austin Flint murmur
Shone syndrome
4
CoA
AS
Parachute mitral valve
Mitral ring (supravalvular mitral membrane)
Fontan procedure
Palliative
Ross procedure
AS
Size of aaS when operate if a symptomatic
0.65cm2/m2 body surface area (normal 2cm)
Noonan syndrome cardiac defect
Specific form of eccentric subaortic stenosis
Asymmetric septal hypertropy ( other hocm and hcm and ihss)
Dominant with variable expression
Cardiac defect assoc with Williams syndrome
Supraaortic stenosis
CoA assoc cxr feat and what genetic syndrome
Turners
3 sign and dilated aorta
Glenn shunt in what cardiac lesion?
Tricuspid obstruction
Takayasu disease
Aortic vascular is Asian 10-30 y
Ps in which syndrome
Noonans
Pulm branch stenosis
Allagille syndrome and rubella syndrome
Four components of tetralogy of fallot
Right ventricular outflow tract stenosis, vsd, dextroposition of aorta and RVH
Tetralogy of fallot cxr
Boot shaped heart with dilated asc aorta
Tetralogy of fallot management
Pg2..O2, Treat iron def up to hct 55, tet spell treat with positions (squat or tummy with knees up) and morphine and surgery ~4 months (if not for surg then propranolol)
Taussig-bing anomaly
DORV and VSD
Transposition of great arteries cxr finding
Egg on string
Three week old baby with cyanosis, heart failure, wide pulse pressure, bounding pulses, loud second heart sound
Truncus arteriosis
Di George
22q11
Accessory pathways
Mahaim pathway, bundle of Kent, atrifasicular connections
Adam stokes attacks
Arrhythmia induced syncope
Innocent murmur names
Stills murmur, pulmonary flow murmur, venous hum, physiological periph plum stenosis with anaemia
Pulmonary hypertension definition
Mean pulmonary artery pressure of greater then 25mmHg or greater than 30 with exercise
Libman sacks endocarditis
Non bacterial such as in SLE
Cardiomyopathy
Duschenne and Becker muscular dystrophy
HACEK organisms cause IE
Haemophilus actinobacillus cardiobacterium eikenella and Kingella
Pickwickian syndrome
Obesity hypo ventilation syndrome
Jeune syndrome
Dwarf
Small chest with short ribs
Acromelia
Scimitar syndrome cardiac defect
PAPVR
Bernoulli equation
Pressure density velocity and constant
Mir primary imaging modality for what
Ventricular volume measurement and semilunar valve insufficiency
Cardiac catheter primary test for what
Evaluating complex physiology in children with abnormal pulmonary vascularure resistance and reactivity, complex single ventricle anatomy, multiple obstructions in r or l heart or lesions pulm arteries not seen on other imaging
Diagnostic catheterisation measures?
O2 seats and pressures (saturation vary little through R heart 5% indicates shunt ( gold standard)
Cardiac catheter seats right and left heart?
Right 65-80% and left 95-98%
Ficus method calculation
Qi = VO2/(Cpv-Cpa)
Vascular resistance equation
Rp = (mean PA pressure - PV or LA pressure)/Qp Rs = (mean Ao pressure -?mean RA pressure)/Qs
Syndromes and cardiac lesions: alagille
Peripheral pulmonary artery stenosis
Syndromes and cardiac lesions: velocardiofacial/22q11 deletion
Conotruncal: interupted aortic arch (50%), truncus, ToF (35%), VSD, pulm atresia, pda,R aortic arch, vascular ring
Syndromes and cardiac lesions: Williams
Supra valvular - AS, PA stenosis
Syndromes and cardiac lesions: Noonan
PS (dystrophic valve)
HOCM (superior axis)
Assoc with chylothorax
Syndromes and cardiac lesions: turners
Aortic root dilation, bicuspid AV, COA
Syndromes and cardiac lesions: Frederick ataxia
HOCM
Syndromes and cardiac lesions: NF1
PS and CoA
Syndromes and cardiac lesions: downs
AVSD, VSD, ASD, ToF
Syndromes and cardiac lesions: charge syndrome
Conotuncal
TOF, VSd, ASD, PDA, AVSD
Syndromes and cardiac lesions: vacterl
VSD
Syndromes and cardiac lesions: congenital rubella
PDA, PA stenosis
Syndromes and cardiac lesions: trisomy 13 and 18
ASD, VSD, PDA, CoA, bi AoV
Syndromes and cardiac lesions: Ethes danlos
Aneurysm all incl aorta and carotids
Syndromes and cardiac lesions: kartageners
Dextrocardia
When to close ASD or VSD
QP:Qs> 2;1
Osmium primum unlikely to close
Eisenmenger’s
Pulm HTN and Change to R to L shunt
PDA cardiomegaly due to
Pressure loading LV
Truncus arteriosis assoc with
22q11 deletions
What to never use in WPW
Digoxin or verapamil
HOCM in two syndromes
Pompe
Noonan
Cyanosed at higher stats with
Polycythaemia
Endocarditis prophylaxis in
Unrepaired cyanotic
Hypocalcaemia ECG changes
Prolonged ST and QT interval
Short in hyper
Long QT congenital and treatment and media to avoid
Congenital affects outflow of K
Tornadoes
Beta block
Avoid TCA, macrolide, antipsychotic and antifungal
Reverse split p2 in
Severe AS
Normal saturations on left and right heart
Left 95-98%
Right 65-80%
Left heart and right heart pressure
Right 5 and 25
Left 10 and 100/10 (aorta 100/60
Qp/Qs
Systemic says change / pulm says change (flipped!)
Ao-SVC:PV-PA
Flick principle
O2 consumption = blood flow (Qs) x oxygen extraction
Pulmonary plethora in cxr if shunt is
2:1 or more
TOF cxr finding
Minor cardiomegaly
Elevated apex
Oligaemia
25% R sided aortic arch
Cxr findings of ebsteins anomaly
Cardiomegaly prominent right hart border
Possible enlargement right causing elevated apex
Small MPA and pulm arteries
Fontan operation
RA connected to pulmonary artery directly
VT diagnosis confirmed by
Evidence of P wave dissociation
Standard ECG voltage
1mV = 1cm
Confirm sinus rhythm on ECG
P wave before every QRS and upright p in I and aVF
Tall p wave and wide means
Tall is right
Wide is left
Atrial enlargement
RV hypertrophy on ECG
R in V1 and S V6, upright T V1
LV hypertrophy on ECG
Q waves, inverted T, s in V1 and r in V6
Combined ventricular hypertrophy on ECG
Can be from large VSD
Increased r and s V3 or 4
WPW found in what CHD
1/3rd ebsteins
Risk in Cath lab
1-3% mortality newborn
Duration of penicillin in RF (mild, mod, severe)
Mild - 10 years or to 21
Mod - 30-35
Severe - 40
Kawasaki management
2g/kg IVIG over 10-12 hours (reduce aneurysm 23% to 5%)
Characteristic ECG in Av canal defects
Superior axis
CHD in klinefelter
50%
ASD
PDA
Q wave in V1 indicates
L-TGA, single ventricle, severe RVH or anterior MI
Older child with hyper dynamic praecordium, wide split S2, systolic flow murmur
ASD
Stills murmur usually disappears with
Sitting
Pulmonary artery wedge pressure close to
LA mean
Cetus near term ratio r to l heart work
2:1
Cardiac condition that says improve with oxygen
TAPVR
Ro and la are what kind of antibodies
Extractable nuclear antigens
5 causes of widely split and fixed S2
Volume overload (ASD, PAPVR) Pressure overload PS Electrical delay RBBB MR (early aortic closure) Occ normal child
Narrow split S2
AS
Pulm HTN
Single S2
Aortic closure delayed: Severe AS (also causes paradoxically split - LBBB causes paradoxically split S2 also)
P2 not audible: eg TGA TOF severe PS,
One semilunar valve: aortic or pulmonary atresia, truncus
Pulm HTN
Boot shaped heart with
TOF (some with tricuspid atresia)
3 sign on cxr with
CoA
LAH and RAH ECH changes
LAH W (wide) RAH T (tall)
Primum ASD location
Lower part of septum
ASD defect unlikely to close if over..
8mm
RBBB post VSD repair percent
50-90%
ECG changes with endocardium cushion defect
RBBB or RVH, superior axsis, prolonged PR
Turners syndrome 30% have which CHD
CoA
Tet spell prevention with
Propranolol
% R Aortic arch in persistent truncus arteriosis
30
Single ventricle in what percent of TGA
85%
Asplenia and polysplenia in heterotaxy
Asplenia has normal IVC and two sinus nodes (none in polysplenia)
Howell jolly and Heinz bodies in asplenia
Anomalous origin of left coronary artery (bland-white-garland syndrome) presentation and ECG changes
As PA pressure falls presents 2-3 months old with angina, cardiomegaly, CHF, no murmur
ECG shows anterolateral Mi
Deep and wide q waves and inverted t and ST shift lead I and aVL and most precocial leads
AV fistula coronary Sx, investigations
Asymptomatic, PDA like murmur, normal cxr and ECG
Risk M.I
Shone complex is..
LVOT obstruction
AS
Aortic arch hypoplasia
CoA
Vascular sling barium swallow findings
Posterior compression of trachea and anterior oesophagus
HOCM in what percent of infants to diabetic mothers
10-20%
Drugs in HOCM
Can use calcium channel and b block
Not digitalis or inotropes
Three viral causes of myocarditis
Adeno
Echo
Coxsackie
Kawasaki disease platelets high or low
High to very high (peak at 2 weeks)
Chorea drug management
Phenobarbital Haloperidol Valproate Diazepam Steroids
Hallmark of MVP
Posterior leaf
Midsystolic click with or without late systolic murmur at apex
P axis derived from
Upright in lead II and inverted aVR
What ataxia assoc with cardiomyopathy
Frederics ataxia
Pulmonary HTN defined as
Over or equal to 25mmHg
Other disorders (not cardiac or resp) that cause pulm HTN (3)
- Rheumatic/vasculitis diseases such as SLE, rheum arthritis etc
- Thromboembolism
- Affect pulm vascularise directly such as schistosomiasis histiocytosis sarcoidosis
PGI2 and PGE2 are
Cf PGF2alpha and PGA2 are
Vasodilator
Vasoconstrictor
Endothelin is a vasodilator/vasoconstrictor
Potent vasoconstrictor in pulm vessels
Six grades of pulmonary hypertension
1: medial wall hypertrophy
2: intima hypertrophy
3: intima fibrosis and narrowing
4-6: irreversible
Sudden death in sport two top causes
HOCM 40%
Congenital and acquired diseases coronary arteries 30%
ACEi allowed in pregnancy?
No!
Measurement best predictor of CV disease
Wast circumference
Too much blood to lungs (DORV, TOF or ebsteins) operation to reduce cyanosis
Modified Blalock-Taussig Shunt - tube to connect pulm artery to branch or aorta
HLHS surgery required
Modified Blalock-Taussig Shunt
Norwood procedure to make an aorta from pulm vessel
Fontan operation
palliative surgical procedure used in children with univentricular hearts. It involves diverting the venous blood from the IVC and SVC to the pulmonary arteries
Ebsteins related to what teratogen
Lithium
Turners cardiac issues
Bicuspid aortic valve
Risk of aortic dissection
Q wave in V1 always pathological and indicates
indicate L- TGA, single ventricle, severe RVH or anterior MI (deep and wide).
Superior axsis
AV canal
TOF
ECG findings on ALCAPA
ECG: left axis deviation, qR in I and AVL with deep “Q” in AVL,
ST elevation in inferior leads and depression in lateral leads.
“T” wave inversion in V4
Long QT syndrome and management
1: males 5-15 swimming
2: females after baby alarm
3: adolescent sleeping male
Tx with advice, b blocker, ICD
Mean pulmonary (capillary) wedge pressure most closely approximates what
LA mean
Magnitude of shunt in secundum ASD most influenced by
RV compliance
Four week old with right sided failure cyanosis and ejection click single second heart sound +- murmur
Truncus arteriosus
VT without shock treatment
Amiodarone first
Junctional ectopic tachycardia after surgery treatment
Arrhythmia
Sedation, consider cooling to 35
Medications (amiodarone)
Tet spell murmur
ESM Softer
PSM louder
WPW delta wave and conduction
You can see delta waves, the conduction is
therefore not going through the normal AV node and its going through the
accessory pathway before it gets to the AV node i.e. there is pre-excitation. If it
was going through the AV node, you would have a normal PR interval and no
Delta wave
S3 made by
S4 made by
Rapid ventricular filling
Blood pouring into a Stiff ventricle (late diastole)
Wide S2 from (3)
ASD
rBBB
PS
Loud S2
Commonly pulmonary HTN
Also ASD
Single S2
Severe aortic stenosis, severe aortic regurgitation, congenital absence of pulmonary valve (such as truncus)
Hyperoxia test
Hyperoxia test: - PaO2 < 70 mmHg, rise by < 30 mmHg or SaO2 unchanged: cardiac cause, TAPV may respond
Cyanotic causes
Right-to-left shunt
Intracardiac: The 5 T’s: Tetralogy of Fallot, Tricuspid atresia, Transposition of the great arteries, Total anomalous pulmonary venous return, Truncus arteriosus; and pulmonary atresia, Ebsteins anomaly (abnormal tricuspid valve), hypoplastic left heart
Great vessel level: persistent pulmonary, hypertension of the newborn Intrapulmonary level: pulmonary arteriovenous malformation
RBBB after what surgery
TOF
Narrow split S2 in
severe pulm HTN
Fractional shortening:
Distance between walls of ventricle in systole and diastole.
Norwood procedure
– separating right and left pulmonary arteries
from main pulmonary artery and connecting the main pulmonary
artery to the aorta (DSK procedure), then conduit from subclavian
artery or ventricle to pulmonary arteries (BT shunt or Sano shunt
respectively). Risk of shunt blockage in premature infants,
dehydration or fever and can get subsequent ischaemia. Often on
aspirin and diuretics to reduce pulmonary blood flow because of
increasing shunt as child grows. Saturations will be in the 70ǯs and the
shunt will give a continuous murmur.
ebsteins anomaly:
downward displacement of abnormal tricuspid valve into
right ventricle. Leaflets often separated. Reduced right ventricular output due
to variable degrees of tricuspid regurgitation, poorly functioning small right
ventricle and right ventricular outflow tract obstruction by valve leaflet.
o Increased risk of WPW.
Scimitar syndrome:
dextroposition associated with hypoplasia of a lung
and anomalous pulmonary venous return from that lung.
Long QT which channel affected 1-10
LQTS 1, 2, 5, 6, 7: potassium channel.
LQTS 3, 4, 9, 10: sodium channel.
LQTS 8: calcium channel.
Triggers for long QT 1-3
There are three common types
Type 1 and 2 respond well to betablocker treatment, because the triggers for type 1 (60%) is exercise; swimming is especially dangerous. For type 2 (30%) the commonest triggers are sudden and loud noise (especially at night), and emotional excitement. In type 3 (10%) events usually occur at night, and defibrillator pacemakers are most commonly needed in this group.
Newborn with cyanosis and left axis deviation highly suggestive of
Tricuspid atresia (cf ebsteins with P waves changed, RBBB +- WPW right side affected)
Pulmonary banding possible indications
AVSD
Swiss cheese multiple VSDs
vSD with CoA
Truncus
Frederichs ataxia heart problem
Hypertrophic cardiomyopathy
Continuous murmur at birth pink and blue causes
Coronary a fistula
Pulmonary atresia with VSD
Asian child with SCN5A and typical ECG
Brugada (if fever needs admission) Na channel
Upright t RVH age
8 days - 8 years
2 days severe cyanosis and LAD
TA
Why is there fixed splitting in ASD
The ASD creates a left to right shunt that increases the blood flow to the right side of the heart, thereby causing the pulmonary valve to close later than the aortic valve independent of inspiration/expiration
ECG: Negative p axis on I and/or aVf indicates??
Situs inversus
Lead reversal
Ectopic atrial tachy