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Step 1 - Cardiology 2
Cardio
83
Medical
Graduate
03/23/2014

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Term
Right to Left shunts
Definition
"Early cyanosis"
TOF
Transposition of the great vessels
Tricuspid Atrestia
TAPVR
Term
Left to Right Shunts
Definition
"Late cyanosis"
VSD
ASD
PDA
Term
Eisenmenger's Syndrome
Definition
Uncorrected VSD, ASD, or PDA causes compensatory pulmonary Pulmonary vascular hypertrophy
Leads to pulm hypertension
Shunt reverses to become R > L
*Late cyanosis, clubbing and polycythemia
Term
TOF
Definition
*anterosuperior displacement of the infundibular septum
1. Pulm stenosis
2. RVH
3. Overriding aorta
4. VSD
*boot shaped heart, will squat to decreased cyanosis
Term
Transposition of great vessels
Definition
Not compatible with life unless a shunt is present
Failure of the AP to spiral
Common in children of diabetic mothers
Term
Coarctation of Aorta
Definition
Infantile- proximal to the insertion of DA, assoc Turners
Adult- distal to ligamentum arteriosum, notching of ribs
Term
PDA
Definition
In fetal period, shunt is right to left (normal)
"machine like" murmur
Maintained by PGE synthesis and low O2 tension
Closed with Indomethacin
Term
22q11 syndrome
Definition
TA, tetralogy of fallout
Term
Down Syndrome
Definition
ASD, VSD, AV septal defect (endocardial cushions)
Term
Congenital Rubella
Definition
Septal defects, PDA, pulmonary artery stenosis
Term
Turner Syndrome
Definition
Coarc of aorta
Term
Marfan's syndrome
Definition
Aortic insufficiency and dissection
Term
Infant of diabetic mother
Definition
Transposition of great vessels
Term
Hyperlipidemia signs
Definition
Atheromas- plaques in BV walls
Xanthomas- Plaques or nodules composed of lipid laden histiocytes in the skin (esp eyelids)
Tendon xanthomas- Lipid deposits in tendon, especially the achilles
Corneal arcus- Lipid deposit in cornea
Term
Monckeberg Arteriosclerosis
Definition
Calcification in the media of the arteries, especially radial or ulnar
Usually benign "pipestem" arteries
*does not obstruct blood flow
Term
Ateriolosclerosis
Definition
Hylaline- thickening of small arteries, especially in HTN, DM
Hyperplastic- Onion skinning in malignany HTN
Term
Atherosclerosis
Definition
Disease of elastic arteries, and large/med muscular arteries
Inc risk in men and postmenopausal women
Location: Abdom Aorta, Coronary Aa, popliteal artery, carotid artery
Term
Atherosclerotic plaque progression
Definition
Endothelial cell dysfunction
Macrophage and LDL accumulation
Foam cell formation
Fatty streak
Sm Mm cell migration (PDGF and FGF), proliferation and ECM deposition
FIbrous plaque
Term
AAA
Definition
Associated with atherosclerosis
Occurs more in Hypertensive male smokers, >50
Term
Thoracic aortic aneurysm
Definition
Assoc with HTN, cystic medial necrosis and tertiary syphilis
Term
Aortic dissection
Definition
Longitdenal intraluminal tear forming a false lumen
Assoc HTN, bicuspid aortic valve, cystic medial necrosis, and inherited CT disorders
CXR shows mediastinal widening
Tx: B blocker to lower the BP
Term
Angina
Definition
*ONLY if there is narrowing of CAD >75%
ST depression on ECG
Prinzmetal variant will show ST elevation
Term
Coronary steal syndrome
Definition
Vasodilator may aggregate ischemia, shunting blood from area of critical stenosis to an area of higher perfusion
Term
MI
Definition
Most often due to acute thrombosis of atherosclerotic plaque
Term
MI 4-12 hrs
Definition
Dark Mottling
Early coag necrosis, edema, hemorrhage, wavy fibers
Risk of arrhythmia
Term
MI 12-24 hrs
Definition
Dark mottling
Contraction bands from repercussion injury, release of necrotic cell content into blood, Neutrophil migration
Risk of Arrythmia
Term
MI 1-3 days
Definition
Hyperemia
Extensive coag necrosis, acute inflammation at borders, neutrophil migration
Risk of fibrinous pericarditis
Term
MI 3-14 days
Definition
Hyperemic border with yellow brown softening
Macrophage infiltration, followed by granulation tissue at margins
Risk of free wall rupture, leading to tamponade
Term
MI 2 weeks to several months
Definition
Gray white scar
Contracted scar complete
Risk of dressers syndrome (pericarditis post MI)
Term
ECG diagnosis of MI
Definition
Anterior wall (LAD): V1-V5
Anteroseptal (LAD): V1-V2
Anterolateral (LCX): V4-V6
Lateral Wall (LCX): I, aVL, V5, V6
Inferior Wall (RCA): II, III, aVF
Term
Dilated cardiomyopathy
Definition
Most common
Alcohol abuse, wet beri beri, coxsackie B, cocaine use, Chagas disease, Doxorubicin tox, hemochromotosis
S3, dilated heart on US
Tx: Na restriction, ACE inhib, diuretics, digoxin, heart tp
Term
Hypertrophic cardiomyopathy
Definition
Hypertrophied interventricular septum, leads to outflow obstruction
Autosomal dominant, B myosin heavy chain mutation
Assoc with friederichs ataxia
S4, systolic murmur
Tx: B blockers, NDHP Ca Ch blockers (verapamil)
Term
Restrictive/Obliterative cardiomyopathy
Definition
Sarcoidosis, amyloidosis, postradiation fibrosis, endocardial fibroelastosis, hemochromatosis
Lofflers syndrome: endomyocardial fibrosis with eosinophils
Term
CHF
Definition
ACE inhibitors, B blockers, ARBs, and spironolactone all reduce mortality
Term
Heart Failure Cells
Definition
Hemosiderin laden macrophages in the lungs
Term
Bacterial Endocarditis
Definition
Fever, Roths spots (round white spot on retina), Osler nodes, Janeway lesions (small painless lesions on palms), splinter hemorrhages
*Mitral valve is most frequently involved
TC valce in drug abusers
Term
Causes of Bacterial Endocarditis
Definition
Acute- S. aureus, large vegetations, rapid onset
Subacute- Viridans strep, smaller vegetations on diseased valves
Malignancy- secondary
Colon cancer- S bovis
Prosthesis- S. epidermidis
IV drug abuse- S aureus, pseudomonas, candida
Term
Libman Sacks endocarditis
Definition
Vegetations on both sides of valves, sterile
Assoc with SLE
Term
Rheumatic Fever
Definition
A consequence of pharyngeal infection with GAS, b hemolytic
strep
Early death due to mycoarditis, Late is Rheumatic HF
Mitral > Aortic >> TC valves effected
*Aschoff bodies (granuloma with giant cells), anitschkow's cells (activated histiocytes)
Ab to M protein are the cause of damage
Term
Acute Pericarditis
Definition
Sharp pain aggravated by inspiration and relieved by sitting up and leaning forward
Friction rub, widespread ST segment elevation
Term
Causes of acute pericarditis
Definition
Fibrinous- Dresslers, uremia, radiation
Serous - Viral, non infections inflammatory diseases
Suppurative- Bacterial (pneumococcus, streptococcus)
Term
Cardiac tamponade
Definition
Compression of the heart by fluid in pericardium, leading to dec CO
Equilibration of diastolic pressures in all four chambers
Hypotension, distant heart sounds, Inc HR, Pulsus paradoxus
Term
Syphilitic Heart disease
Definition
Tertiary syphilis disrupts the vasa vasorum of the aorta with consequent atrophy of the vessel wall and dilation of the aorta and valve ring
*tree bark appearance
Term
Myxomas
Definition
Most common primary cardiac tumor in adults
90% occur in the atria, mostly LA
*multiple syncopal episodes
Term
Rhabdomyomas
Definition
Most frequent primary tumor in children, assoc with tuberous sclerosis (+angiomyolipoma and astrocytoma)
Term
Kussmaul's sign
Definition
Inc JVP on inspiration instead of normal dec
Inspiration causes negative intrathoracic pressure not TM to the heart, impaired filling of the R ventricle, blood backs up into the VC
Seen with constrictive pericarditis, restrictive cadriomyopathies, RA or RV tumors
Term
Temporal (giant cell) arteritis
Definition
Generally elderly females
Unilateral HA, jaw claudication
*can cause irreversible blindness due to artery occlusion
Assoc with Polymyalgia rheumatica
Focal granulomatous inflammation
Tx: high dose corticosteroids
Term
Takayasu's arteritis
Definition
Asian females < 40
*pulseless disease, fever night sweats, arthritis, myalgias, skin nodules, ocular disturbances
Granulomatous thickening of the aortic arch
Tx corticosteroids
Term
PAN
Definition
Young adults
*False HepB seroposivity in 30%
Abdominal Pain, melena, HTN, neurologic dysfunction, cutaneous eruptions, renal damage
*renal and visceral vessels mostly, diff age lesions
**Immune complex mediated
Transmural inflammation with fibrinoid necrosis,
Tx: corticosteroids, cyclophosphamide
Term
Kawasaki dz
Definition
Asian children < 4
Conjunctival injection, strawberry tongue, hand-foot erythemia, desquamating rash
Can develop coronary aneurysms
Tx: IvIg, aspirin
Term
Buerger's disease
Definition
Heavy smokers, Males, <40
Intermittent claudication leads to gangrene, autoamputation of digits, superficial nodular phlebitis
*Raynauds often present
Term
Microscopic polyangiitis
Definition
Necrotizing vasculitis in lungs, kidney, and skin
*pauci immune glomerulonephritis and palpable purpura
*NO granulomas
p-ANCA pos
Tx: cyclophosphamide and corticsteroids
Term
Wegeners Granulomatosis
Definition
Perforation of the nasal septum, chronic sinusitis, otitis media, mastoiditis
Hemopytisis, cough, dyspnea
Hematuria, red cell casts
*Focal necrotizing vasculitis, necrotizing granulomas in lung, necrotizing glomerulonephritis
c-ANCA pos
Cyclophosphamide, corticosteroids
Term
Churg-Strauss syndrome
Definition
Asthma, sinusitis, palpable purpura, peripheral neuropathy
Pauci immune glomerulonephritis
Granulomas, necrotizing vasculitis with eosinophilia
p-ANCA
Term
Henoch-Schonlein purpura
Definition
Most common childhood systemic vasculitis
Often follows URI
Triad: Purpura (butt and legs), arthralgia, abdominal pain, melena, multiple lesions of same age
Secondary to IgA deposition
Term
Cherry hemangioma
Definition
Benign capiallry hemangioma of elderly
Term
Pyogenic granuloma
Definition
Polyploid capillary hemangioma that can ulcerate and bleed
Assoc with pregnancy
Term
Cystic Hygroma
Definition
Cavernous lymphangioma of the neck
Assoc with Turners
Term
Bacillary Angiomatosis
Definition
Benign papules in AIDS patients
*bartonella henselae
Often mistaken for Kaposi sarcoma
Term
Angiosarcoma
Definition
Rare blood vessel malignancy
Head neck and breast area
Assoc with radiation therapy
Very aggressive and difficult to resect
Term
Lymphangiosarcoma
Definition
Malignancy assoc with persistent lymphedema
Term
Kaposi Sarcoma
Definition
Endothelial malignancy most commonly of skin, but also mouth, GI tract and resp tract.
HHV-8 and HIV
Term
Sturge Weber disease
Definition
Affects capillary sized vessels
Port Wine stain on face, ipsilateral leptomeningeal angiomatosis, seizures and early onset glaucoma
Term
Ca Ch Blockers
Definition
Verapamil, Diltiazem (NDHP), Nifedipine, Amlodipine (DHP)
Blocks VG L-type Ca channels to reduce contractility
Heart is affected by the NDHP
Used for HTN, Angina, arrythmias, Prinzmetal, Raynauds
T- cardiac depression, AV block
Term
Hydralazine
Definition
Vasodilate arterioles via Inc cGMP, Sm mm relaxation
First line therapy for pregnant hypertension with methyldopa
T- reflex tachy, fluid retention, lupus like syndrome
Term
Nitroprusside
Definition
Short acting inc cGMP via direct release of NO, can cause cyanide toxicity
For malignant HTN
Term
Fenoldopam
Definition
D1 receptor angonist
Dec BP andinc natriuresis
Term
Minoxidil
Definition
Opens K channels, relaxes vascular smooth muscle
Used for severe HTN
Can cause hypertrichosis, hypotension, reflex tachy
Term
Nitroglycerin, Isosorbide Dinitrate
Definition
Vasodilate by releasing NO in Sm mm, causing an increase in cGMP and Sm Mm relaxation
*primarily dilates veins, dec preload
T- monday dz, tolerance during the work week
Term
Statins
Definition
HMG CoA reductase inhibitors
Large effect on LDL, minimal effect on HDL
T- Hepatotox, Rhabdomyolysis
Term
Niacin
Definition
Inhibits lipolysis in adipose tissue, reduces hepatic VLDL secretion
Small change in HDL and LDL
T- Red flushed face, Hyperglycemia (acanthosis nigricans) Hyperuricemia (gout)
Term
Bile Acid resins
Definition
Cholestyramine, colestipol, colesvelam
Small change on LDL
Prevents intestinal reabsorption of bile acids
T- GI discomfort, cholesterol gallstones
Term
Ezetimibe
Definition
Prevents cholesterol reabsorption at brush border
Dec LDL
Term
Fibrates
Definition
Upregulate LPL to increase TG clearance
Large decrease in TGs
Can cause myositis, hepatoxicity, cholesterol gallstones
Term
Cardiac Glycosides
Definition
Digoxin
Direct inhibition of Na/K ATPase leads to indirect inhibition of Na/Ca exchanger > pos inotropy
Stimualtes the vagus nerve to dec HR
Tox: Blurry yellow vision, can lead to hyperkalemia
Quinidine can decrease dig clearance, inc toxicity
Term
Class 1A Na Channel blockers
Definition
Disopyramide, Quinidine, Procainamide
"Double Quarter Pounder"
Increases AP duration, increases ERP, Inc QT interval
Affects both atrial and ventricular arrythmias
T- Q(cinchonism, tinnitus) P(SLE like syndrome) D(heart failure)
Term
Class 1B Na Channel Blockers
Definition
Lidocaine, Tocainide, Mexiletine "Lettuce, tomato, mayo"
Dec AP duration
Affects ischemic or depolarized Purkinje and ventricular tissue
Useful in acute Ventricular arrythmias
T- CV depression
Term
Class 1C Na Channel Blockers
Definition
Flecainide, Propafone "Fries, please"
*No affect on AP duration
Useful in ventricular tachycardia that progress to Vfib
T- proarrythmic
Term
Class 2 B-blockers
Definition
Decreases SA and AV node activity by dec cAMP and Ca currents
Decreases slope of phase 4
Use- Vtach, SVT
T- may mask the signs of hypoglycemia
Term
Class 3 K Channel Blockers
Definition
Amiodarone, Ibutilide, Dofetilide, Sotalol
Inc AP duration, Inc ERP, Inc QT interval
T- S (torsades de pointes), I (torsades), A (pulmonary fibrosis, hepatox, hypo/hyperthryoid, corneal deposits, photodermatitis)
Check PFTs, LFTs, TFTs
Term
Class 4 Ca Ch blockers
Definition
Verapamil, Diltiazem
Decrease slope of phase 0
Dec conduction velocity, Inc ERP, Inc PR interval
Used in prevention of nodal
T- constipation, flushing, edema, CV effects
Term
Adenosine
Definition
Increase the K out of cells > hyper polarization.
DOC diagnosing/abolishing SVT
Very short acting
Effects blocked by theophylline and caffeine
Term
Mg
Definition
Effective in Torsades de Pointes and Dig toxicity
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