Cardiology 16% Flashcards
Inotropes
Ex:
MOA:
Ex: dobutamine, dopamine, epinephrine, digoxin
MOA: increase CO by increasing contractility
Chronotropes
Ex:
MOA:
Positive: adrenaline
Negative: digoxin
MOA: alter heart rate
Pressors
Ex:
MOA:
Ex: Dopamine, phenylephrine
MOA: improve pressure by increasing vascular tone
Postural hypotension =
> 20 mmHg drop in SBP OR >10 mmHg drop in DBP b/w supine and sitting and/or standing
Metabolic syndrome =
3 or more of the following:
- Truncal obesity
- HDL < 40 (men) or <50 (women)
- Hypertriglyceridemia: >150
- Fasting glucose >110
- HTN
Blood pressure for: Normal = PreHTN = HTN stage 1 = HTN stage 2 =
Normal = <120/<80
PreHTN = 120-139/80-90
HTN stage 1 = 140-159/90-99
HTN stage 2 = >160/>100
Hypertensive urgency =
Hypertensive emergency =
Increased BP w/ NO apparent acute end-organ damage
> 220 mmHg SBP or >125 mmHg DBP w/ acute target end-organ damage
ECG of HTN may reveal ____
left ventricular hypertrophy = deep S waves in V1 + V2, tall R waves in V5 + V6
Goal blood pressure in HTN
140/90
Goal blood pressure in diabetes or CKD
130/80
HCTZ, Chlorthalidone =
MOA:
SE:
Diuretic
MOA: prevent kidney Na/water reabsorption at DISTAL DILUTING TUBULE
SE: HypoNa, HypoK
hyperuricemia, hyperglycemia –> caution in pts w/ DM and gout
HTN medication that should be used w/ caution in pts w/ DM and gout
HCTZ, Chlorthalidone
Furosemide, bumetanide =
MOA:
SE:
Loop diuretics
MOA: inhibit water transport across Loop of Henle –> increased extretion of water, Na, Cl, K
SE: HypoK/Na/Cl, Hypochloremic metabolic alkalosis, hyperglycemia
HTN medication CI in pts w/ sulfa allergies.
Loop diuretics: Furosemide, bumetanide
Spironolactone, Amiloride, Eplerenone =
MOA:
SE:
K+ sparing diuretics
MOA: inhibit aldosterone-mediated Na/H2O absorption
SE: HyperK, gynecomastia
HTN medication that causes gynecomastia
K+ sparing diuretics: Spironolactone, Amiloride, Eplerenone
Nifedipine, amlodipine =
MOA:
Indication:
Dihydropyridines CCB
MOA: potent vasodilators (no effect on cardiac contractility/conduction)
Ind: HTN, Angina, Raynaud’s
Verapamil, Diltiazem =
MOA:
Indication:
Non-dihydropyridines CCB
MOA: cardiac contractility and conduction, potent vasodilators, reduce vascular permeability
Ind: HTN w/ A fib, Angina, Raynaud’s
HTN medication that causes constipation
verapamil
Cardioselective beta blockers: (3)
Non-cardioselective beta blockers: (1)
Cardioselective beta blockers (beta-1) : Atenolol, metoprolol, esmolol
Non-cardioselective beta blockers (beta-1 & beta-2): Propranolol
T/F: Beta blockers are used as 1st line monotherapy in HTN.
False. Thiazide diuretics (HTCZ) are tx of choice as initial therapy in uncomplicated HTN.
CI of beta blockers:
2nd/3rd heart block, decompensated heart failure
Nonselective beta blockers CI in asthma/COPD –> may worsen peripheral vascular disease/Raynaud’s phenomenon
CI of CCB:
pts taking beta blockers, CHF, 2nd/3rd heart block
Drug of choice for pts w/ HTN and BPH
Indications:
SE:
alpha-1 blockers: Prazosin, Terazosin, Doxazosin
Increased HDL, decrease LDL, improves insulin sensitivity
SE: 1st dose syncope, NOT 1st line
Tx of hypertensive urgencies/emergencies:
If MI also present:
Preferred: sodium nitroprusside
If MI present: nitroglycerin or beta-blocker
Others: nicardipine, enalaprilat, diazoxide, trimethaphan, loop diuretics
Tx of aortic dissection:
Nitroprusside + beta-blocker (labetalol, esmolol) + urgent surgery
Tx of hypertensive urgencies w/ acute renal failure:
Fenoldopam (dopamine-1 receptor agonist)
___-sided HF is most commonly caused by ___ -sided HF.
RIGHT-sided HF is most commonly caused by LEFT -sided HF.
S4 gallop heard in ___ heart failure
diastolic heart failure
Indication of Implantable Cardioverter-defibrillator in CHF
Ejection fraction <35
Effect of ACE inhibitors in CHF
decreased left ventricular wall stress
slow myocardial remodeling and fibrosis
Effect of beta-blockers in CHF
improve ejection fraction
reduce left ventricular dilation
reduce incidence of dysrhythmia
3 patterns of unstable angina:
- angina at rest
- new onset of angina symptoms
- increasing pattern of pain in previously stable patients
Levine sign =
Clenched fist over sternum and clenched teeth when describing chest pain
Seen in pt w/ ischemia
Definitive diagnosis of ischemic heart disease
Coronary angiography
Most useful diagnosis of ischemic heart disease
Exercise stress testing –> ST segment depression of 1 mm = +
1st line therapy for chronic angina
beta-blockers
Primary treatment for acute anginal attacks
Sublingual NTG tab/spray
Sublingual isosorbide dinitrate
Dressler syndrome =
1-2 weeks post-MI
Pericarditis, fever, leukocytosis, pericardial/pleural effusion
Type of murmur that might be heard in Acute Coronary Syndrome
Mitral regurgitation
S4 gallop
ST elevatation >1mm in 2 contiguous leads =
STEMI
How to differentiate b/w UA and NSTEMI
Cardiac biomarkers become elevated during evaluation = NSTEMI
Both have ST-segment depression
Transient ST-segment changes of >0.5 mm =
acute ischemia and Coronary Artery DIsease
_____ on ECG is high suggestive of new MI.
New left BBB
Progression of ECG changes in STEMI
peaked T waves –> ST seg elevation –> Q waves–> T wave inversion
Inferior MI in which leads?
Artery involved?
II, III, aVF
Right coronary artery
Posterior MI in which leads?
Artery involved?
V1, V2 ST depressions
Right coronary artery, Circumflex
Anteroseptal MI in which leads?
Artery involved?
V1, V2
Proximal Left Anterior Descending
Anterior MI in which leads?
Artery involved?
V1, V2, V3
Left Anterior Descending
Anterolateral MI in which leads?
Artery involved?
V4, V5, V6
Circumflex
Myoglobin Initial elevation time: Peak elevation: Return to normal: When to draw:
Initial elevation time: 1-4 hrs
Peak elevation: 6-7 hrs
Return to normal: 24 hrs
When to draw: 1-2 hrs after onset of chest pain
Cardiac troponin I Initial elevation time: Peak elevation: Return to normal: When to draw:
Initial elevation time: 3-12 hrs
Peak elevation: 24 hrs
Return to normal: 5-10 DAYS
When to draw: 12 hrs after onset of chest pain, repeat in 8-12 hrs
Cardiac troponin T Initial elevation time: Peak elevation: Return to normal: When to draw:
Initial elevation time: 3-12 hrs
Peak elevation: 12-48 hrs
Return to normal: 5-14 DAYS
When to draw: 12 hrs after onset of chest pain
CK-MB Initial elevation time: Peak elevation: Return to normal: When to draw:
Initial elevation time: 3-12 hrs
Peak elevation: 24 hrs
Return to normal: 48-72 hrs
When to draw: At presentation, repeat in 8-12 hrs
Evaluating possible reinfarction: sample baseline when symptoms begin, repeat 6-12 hrs later
Most specific cardiac biomarkers for myocardial damage
Troponin T and I
Most sensitive test to quantify extent of MI
MRI w/ gadolinium contrast
Absolute contraindications of thrombolytic therapy in STEMI (5)
- Previous hemorrhagic stroke
- Any stroke within past 1 year
- Known intracranial neoplasm
- Active internal bleeding
- Suspected aortic dissection
Which of the following is NOT a cyanotic anomaly? A. Tetralogy of Fallot B. Pulmonary atresia C. Transposition of great vessels D. Hypoplastic left heart syndrome E. Atrial septal defect
E. ASD is non-cyanotic (Left to Right shunt). All others are cyanotic (Right to Left shunt)
Tetralogy of Fallot =
- RV outflow obstruction (pulmonary artery stenosis)
- RV hypertrophy
- VSD
- Overriding aorta
MC type of atrial septal defect
Ostium secundum
Non-cyanotic
What type of congenital anomaly?
Crescendo-decrescendo holosystolic at LSB, radiating to back
Tetralogy of Fallot
Cyanotic
What type of congenital anomaly?
Systolic ejection murmur at 2nd left intercostal space. Early to middle systolic rumble
ASD
Non-cyanotic
What type of congenital anomaly?
Systolic murmur at LLSB
VSD
Non-cyanotic
What type of congenital anomaly?
Continuous machinery murmur
PDA
Non-cyanotic
What type of congenital anomaly?
Systolic, LUSB and left inter-scapular area
Coarctation of aorta
Non-cyanotic
What type of congenital anomaly?
Common in Down syndrome
Atrioventricular canal defect
Electrical alternans is pathognomonic for ___
Pericaridal effusion
IVDU w/ infective endocarditis MC pathogen ____
___ valve frequently involved.
Staph aureus
Tricuspid valve
what is an indication for cilostazol therapy?
Peripheral arterial disease
Do venous ulcers or arterial ulcers appear on the medial aspect of the ankle?
venous.
Arterial are more common on the lateral side
where is the most common site for an aortic aneurysm?
Infrarenal Aorta
Endocarditis prophylaxis of choice:
Amoxicillin
Clindamycin if PCN allergy
When is surgery indicated for abdominal aneurysm?
> 5cm aneurysm
must be > 3 cm to be called an aneurysm
Treatment for acutely ill pts w/ HF pending blood cultures w/ Infective endocarditis
Gentamicin, vancomycin + cefepime (4th gen ceph)
MC involved valve in rheumatic heart disease
mitral
Criteria for Rheumatic fever:
___ major OR ___ major + ___ minor
Major (5)
Minor (5)
Jones criteria: 2 major OR 1 major + 2 minor
Major: carditis, erythema marginatum, subcutaneous nodues, chorea, polyarthritis
Minor: fever, polyarthralgias, reversible prolong PRI, increased ESR, increase C-reactive protein
Abx tx of Rheumatic Fever
Penicillin G
Erythromycin if PCN allergy
Leriche syndrome
Erectile dysfunction w/ iliac artery disease in peripheral arterial disease
Endocarditis prophylaxis of choice:
Amoxicillin
Clindamycin if PCN allergy
patient with bilateral conjunctivitis, edema and erythema of palms and soles, cracked lips, strawberry tongue. What complication can occur with this disease?
Coronary artery aneurysm (Kawasaki Disease)
Elevated ____ has strong association w/ incidence and progression of PAD
homocysteine
Brodie-Trendelenburg test
Differentiates saphenofemoral valve incompetence from perforator vein incompetence in Varicose Veins
Sensitive/specific test for peripheral arterial disease
Ankle-brachial index <0.9
Gold standard for dx of Peripheral Arterial Disease
Angiography
All of the following are features of Giant Cell Arteritis EXCEPT: A. Polymyalgia rheumatica B. Diplopia C. Normochromic microcytic anemia D. Thrombocytopenia E. Elevated ESR and CRP
C, D: Normochromic normocytic anemia, thrombocytosis
Polymyalgia rheumatica = pain and stiffness of shoulder and pelvic girdle; present in 50% of pts w/ GCA
Management of AAA based on size
3-4 cm: US Q yearly
4-4.5 cm: US Q 6 months
>4.5 cm: Vascular surgeon referral
>5.5 cm or >0.5 cm expansion in 6 months: Immediate surgical repair
Dx of choice for:
AAA:
Thoracic aneurysm:
AAA: Abdominal US
Thoracic aneurysm: CT scan
Nonartherosclerotic, inflammatory vascular disease most associated with young (less than 40 y/o) smokers
Thromboangiitis obliterans
Small-medium vessels
U waves
Hypokalemia
J waves
Hypothermia
Aka Osborn waves
Regimen that improves morbidity and mortality in Acute Coronary Syndrome
Aspirin, beta blocker, enoxaparin (Lovenox)
Tx of variant (Prinzmetal) angina
CCB
What electrolyte abnormalities increase risk of digoxin toxicity
HYPOmagnesemia
HYPOkalemia
HYPERcalcemia
Define: Dromotropy = Chronotropy = Inotropy = Lusitropy =
Dromotropy = conduction velocity of AV node Chronotropy = heart rate Inotropy = cardiac contractility Lusitropy = relaxation
EKG of ASD shows ___
RBBB
EKG of ventriculoseptal defect shows ___
LVH
EKG of Tetralogy of Fallot shows ___
RVH and right axis deviation
CCB recommended for rate control for A fib in what kind of patient?
COPD
BB can cause severe respiratory distress
Rib notching
Coarctation of aorta
Cardiac tamponade pulse
Paradoxical pulse (abnormally large decrease in systolic blood pressure and pulse wave amplitude during inspiration)
Tx of DVT in:
- idiopathic, 1st episode
- recurrent idiopathic OR continuing risk factors
- 1st epsiode w/ reversible/time-limiting risk factor (immobilization, trauma, post-sx)
Initiation of heparin w/ warfarin in all 3 senarios 1. Warfarin for 6-12 months 2. Warfarin for 12 months 3. Warfarin for 3-6 months Target INR: 2-3
Tx of atrial fibrillation
CCB (verapamil) or BB
Venous insufficiency: (lateral/medial) malleolus
medial
1st line tx for stable angina
BB
1st line tx for cardiogenic shock
Dobutamine
pulsus paradoxus found in ____
pericardial effusion
Abx that should be avoided in Long QT syndrome
macrolides
fluoroquinolones
Wide QRS complex w/ broad slurred R wave in V5 and V6 w/ deep S wave in V1
LBBB
M shaped P wave in lead II, biphasic P wave in lead V1
Left atrial enlargement
R wave larger than S wave in V1 w/ R wave measuring >7mm
Right ventricular hypertrophy
Deep S wave in lead I, isolated Q wave in lead III, inverted T wave in lead III
Right heart strain
S1Q3T3 –> PE
Wide QRS complexes w/ RsR’ pattern in leads V1 and V2. Wide S wave in V6.
Right bundle branch block
Antidote for Heparin
Protamine sulfate
Medications that cause acute pericarditis (5)
Isoniazid Procainamide Phenoytoin Hydralazine Penicillins
Orthostatic hypotension seen in hypovolemia etiology (Chronic adrenal insufficiency, blood loss) is associated (with/without) compensatory increase in heart rate.
WITH
Orthostatic hypotension seen in autonomic etiology (Diabetic autonomic insufficiency) is associated (with/without) compensatory increase in heart rate.
WITHOUT
C-reactive protein is a potent predictor of ____
future coronary events (Unstable angina, acute MI) and ischemic stroke
What HTN medication may increase serum lithium levels?
Thiazide diuretics
NOT loop diuretics
Best at lowering LDL
HMGcoA Reductase Inhibitors (statins)
Best at raising HDL
Niacin (Vit B3)
Best at decreasing Triglycerides
Fibrates (Gemfibrozil, fenofibrates)
Only lipid lowering agent thats safe in pregnancy
Bile Acid Sequestrates (Cholestryamine, Colestipol, Colesevelam)
Marfan’s Syndrome is caused by genetic deletion of ___
Fibrillin-1 (FBN-1)
Polyarteritis Nodosa is highly associated with ___.
MOA
Hepatitis B
Antigen-antibody complexes
Churg-Strauss syndrome is a ____ (small/medium/large) vessel vasculitis that is characterized by ___ (3)
ANCA-associated (p-ANCA)
small
eosinophilia, asthma, and vasculitis
Pericardial effusions present with ____
exertional dyspnea
pulmonary edema
JVD