Cardio - kap Flashcards
Treatment for chronic stable angina?
1st line - Beta Blocker (improves exercise tolerance, relives angina by decreasing myocardial contractility/hr, improves survival in those with MI)
Can also try - Calcium channel blocker if angina persists or a nitrate acutely
Preventatives - Aspirin, statin, smoking cessation, exercise/weight loss, control blood pressure and DM
A pt on warfarin is having excessive bruising. What is the cause?
CYP450 inhibition increases Warfarin Acetaminophen/NSAIDS Abs/antifungal (metronidazole) Amiodarone Cimetidine Cranberry juice, Ginkgo biloba, Vit E Omeprazole Thyroid hormone SSRI (fluoxetine)
If a warfarin pt is having excessive clotting, what is the cause?
CYP 450 Inducer Carbamazepine, phenytoin Ginseng, St. John's wort Oral contraceptives phenobarbital Rifampin
A pt with pleuritic chest pain, dyspnea, tachypnea, and tachycardia and normal CXR most likely has?
Pulmonary embolism
CXR can be abn with PEm but generally used to rule out PNA, pneumo, pericardial effusion, and aortic dissection
ST elevation in leads II, III, aVF, hypotension, and JVD
Right Ventricular Myocardial infarction
(inferior wall MI due to occlusion of RCA)
In addition to usual MI therapy give IV fluids to improve RV preload.
First step in managing a patient with acute arterial occlusion of the lower extremity?
IV heparin infusion
(Remember 6p’s of acute limb ischemia: pain, pallor, poikilothermia (cool extremity), parethesia, pulselessness, and paralysis)
Common in a fib pts
Start heparin b/c the pt is at risk of limb damage (sensory loss, pain, weakness)
Sudden onset chest pain radiating to the back with wide mediastinum on CXR
Aortic dissection
Can also develop cardiac temponade - hypotension, tachycardia, JVD, irregular respiration
Once diagnosed with Peripheral artery dz, what complication is most likely to occur in the next 5 years?
Cardiovascular dz (MI, stroke)
What murmur is associated with bacterial endocarditis?
Systolic murmur that increases with inspiration
A pt with chronic renal failure presents with chest pain that improves with sitting up
uremic pericarditis
Need to put them on dialysis
Typically have BUN >60 and diffuse ST elevation is absent on EKG due to lack of myocardial inflammation
If you suspect dig toxicity, look for what meds in their drug regimen?
Amiodarone Verapamil quinidine propafenone syx = GI distress, weakness, vision changes
ECG strip that is irregularly irregular + tachy is?
A fib
According to advanced cardiac life support all pts with a pulse and persistent tachy causing hemodynamic instability (hypotension, ischemia) should be managed with?
Cardioversion
This will synchronize the heart
If pulseless pt has vtach - defibrilation
What is a major complication 5 days to 2 weeks post MI?
Ventricular free wall rupture
Pt presents with sudden chest pain, profound shock, rapidly becomes pulseless
Which medications improve long-term survival in pts with LV systolic dysfunction (decreased ejection fraction)?
Beta blockers
ACEI/ARBS
Mineracorticoid receptor antagonists (spironolactone, eplernone)
In Blacks - Hydralazine and Nitrates
Inheritance pattern of Hypertrophic Cardiomyopathy?
AD
Mutation in cardiac myosin binding protein C and myosin heavy chain
If a pt presents with SOB, tricuspid regurg (sternal border murmur increasing with inspiration), peripheral edema, and ECG findings most likely has? And how would you manage it?
Pulmonary HTN (most lively due to left sided HF) Give diuretics and ACEI/ARB
Cyanide toxicity can occur in pts following an infusion of which medication?
Nitroprusside
Altered mental status, lactic acidosis, seizures, and coma
What test has the highest sensitivity for dx’ing CHF?
BNP
Released in CHF pts in response to high ventricular filling pressures
Found in 90% of CHF pts
Physical findings are SPECIFIC for CHF (crackles, elevated JVP, edema, 3rd heart sound)
Why does a MI pt report pain resolution following SL nitroglycerin and ASA?
Decreased LV volume
Systemic venodilation -> decreased LV preload/EDV, reduces wall stress and oxygen demand
How do you manage symptomatic sinus bradycardia?
IV atropine
If no response IV Epi/Dopamine or transcutaneous pacing
What are the 3 strongest predictors of AAA expansion and rupture?
Large aneurysm diameter
Rapid rate of expansion
Current cigarette smoking
Repair is indicated if pt is symptomatic or if diameter is over 5.5 cm
Pt reports being very aware of his heartbeat while lying in the lateral decubitus position. Dx?
Aortic regurgitation
AR -> increased LV preload -> large ventricle
How should you treat a pt with a R ventricular MI?
Isotonic saline Bolus
Increases RV preload and helps to prevent profound hypotenstion
ST elevation in inferior leads + clear lungs on auscultation suggest RVMI
Type of murmur frequently found in Marfan?
Early diastolic
Often present with aortic dissection
Aortic regurg is a complication of dissection.
AR = early diastolic murmur
What type of valvular insufficiency is associated with aortic dissection?
Aortic Regurgitation
Early decrescendo diastolic murmur
Typically seen in a proximal ascending aortic dissection
A disoriented pt presents with a NL PCWP and a Increased mixed venous oxygen saturation. Dx?
Septic shock
Hypotensive due to reduced afterload (decreased SVR) due to peripheral vasodilation
What are the 3 features of Beck’s triad and what does it Dx?
- Hypotension
- Distended neck veins
- Muffled heart sounds
Dx = Cardiac temponade
Pulsus paradoxus is another common finding
These syx occur due to an exaggerated shift of the interventricular septum -> reduced LV preload -> reduced SV -> reduced CO
3 causes of acute limb ischemia?
- Cardiac/Arterial embolus (a fib, LV thrombi) - suspect in a previously a smptomatic pt with hx of heart dz
- Arterial thrombosis - suspect in pt with history of claudication
- latrogenic/blunt trauma
Which drug classes vary in their ability to alleviate rapid heart rates depending on use dependence?
Class I (esp Class Ic; progressive decrease in impulse conduction leading to a wider QRS complex) - Flecainide, propafenone Class IV (CCB's)
If you hear a diastolic continuous murmur, what should be done next?
An echocardiogram
What type of murmur in a healthy adult does not require further evaluation?
Midsystolic
When is a carotid endartectomy indicated?
Men: Asymptomatic, 60-99% stenosis Symptomatic, 50+% stenosis Women: 70+% Stenosis regardless of symptoms
Most common complication months after an MI?
Ventricular Aneurysm
ECG often demonstrates ST elevation with deep Q waves.
Progressive ventricular enlargement
Noninflammatory, nonaterosclerotic condition presenting in 15-50 y/o women.
Fibromuscular dysplasia (arterial vessel stenosis) primarily affects renal arteries causing HTN, can cause brain ischemia Syx -> HTN, high renin and aldosterone (secondary hyperaldosteronism) Dx -> CT angio of the abdomen or duplex U/S
Is a stress EKG warranted in a young pt with chest pain but no EKG changes?
No, the stress test is likely to yield a false positive and put the pt through unnecessary tests.
What PE and studies indicate a pericardial effusion?
Recent URI, dyspnea, elevated JVP, clear lung fields
CXR - increased cardiac silhouette (also indicates early temponade)
what is the most important factor to reduce mortality in Sudden Cardiac Arrest?
Time to effective CPR, rhythem analysis, and defibrillation
Elapsed time to effective resuscitation
Exertional dyspnea, orthopnea, bibasilar rales, lower extremity edema, and normal ejection fraction
HF with preserved Ejection Fraction
AKA diastolic dysfunction
Usually due to hypertensive heart dz
Abdominal pain + n/v?
Acute coronary syndrom. Get an ECG
S3 (follows S2) is indicative of?
LV failure (Ken-tuc-KY)
Normal finding in young adults
Consider IV diuretics for symptomatic relief
A pt presents with peripheral edema secondary to starting a new medication. What was the medication?
Amlodipine
Dihydropyriding Ca-channel agonists can cause peripheral edema due to dilation of peripheral vessels
If edema is serious d/c
Pt with infective endocarditis develops AV block. Dx?
Perivalvular abscess extending into cardiac conduction tissues
Found in intervenous drug users and pts with aortic valve endocarditis
Found in 40% of PWID with IE
Syx - decreased exercise tolerance, exertional dyspnea, angina, syncope
PE - diminished carotid pulses, soft second heart sound, mid-to-late systolic murmur with max intensity at the second right intercostal space. Dx?
Aortic stenosis
The stenosis = outflow obstruction so increased CO cannot overcome this -> hypotension
Severe HTN + papilledema, retinal hemorrhages
Malignant hypertension (Hypertensive emergency >180/120)
Most common benign cardiac tumor?
Myxomas
Usually in Left atrium
Presents with fatigue, low grade fever, weight loss, systemic embolization, CV syx
If a pt is put on an electrolyte wasting diuretic, what are they at risk of developing?
Recurrent ventricular tachy
Do a metabolic panel for hypokalemia and hypomagnesmia
What can cause syncope in a pt with a history of heart dz and occasional ectopic beats?
Arrythmia
May not have prodomal syx at time of episode (ie no nausea, pallor, diaphoresis, etc.)
Signs of RV failure
Elevated JVP
S3
Tricuspid regurge
Hepatomegaly with pulsatile liver
Lower extremity edema, ascites, and or pleural effusions
*Often seen in Cor Pulmonale - do an echo, catheterization will most likely show elevated pulmonary a. pressure
Pulmonary capillary wedge estimates the pressure in the?
LV
Elevated PCWP indicates LV failure
How should you manage a pt with DM, HTN, and proteinuria?
Start a ACEI to prevent the progression of diabetic nephropathy.
First line therapy for DM pts with HTN
Why are beta blockers traditionally contra indicated in DM’s with HTN?
Thy mask hypoglycemia
Usually use after an ACEI
How do you manage cardiac temponade?
Pericardiocentesis
Use in pts with pulsus paradoxes, hypotension, and cardiomegaly on imaging
What is a contradiction of thrombolytic therapy in a pt that had an MI?
- CPR for 10+ minutes
There is likely trauma to the anterior chest wall -> high bleeding risk - Diabetic retinopathy - high risk of retinal hemorrhage
- Lower GI bleed if in the last 2-4 weeks
What stress test is appropriate in a pt with stable angina and cannot tolerate exercise?
Dobutamine stress test
Dobutamine increases myocardial O2 demand and mimics exercise
When is an adenosine stress test appropriate?
Better for Coronary Artery disease because a stenosed artery cannot increase myocardial blood flow
Contraindicated in pts with asthma or COPD
Once elevated BP is observed at 3 visits, how do we manage this patient?
Stage I HTN with no other comorbidities:
- Exercise
- Diet modification
- Thiazide (HCTZ)
How do you manage a pt with BP > 160?
Manage with two drug combo
Thiazide + ACEI
ST elevation and T wave inversion in leads II, III, and aVF
occlusion of the RCA
Inferior infarction
ST elevation in I, aVL, V5, V6
Occlusion of Circumflex
Lateral infarction
What is USPSTF’s recommendations for lipid screeenings?
If no RF’s:
Men - 35 y/o
Women - 45 y/o
If RF’s:
Men - 20 to 35
Women
20 to 45
RFS = DM, Family Hx (<50 in males, <60 in female relatives), Tobacco use, HTN
When is a pt a candidate for valve replacement?
EF < 60%
Pansystolic murmur best heard over the apex and radiating to the axilla?
Mitral regurg
What is the best lifestyle modification to lower the risk of cardiovascular dz?
Smoking cessation
A 21 y/o healthy pt presents in acute distress and ECG reveals ST elevations. What should be high on the differentials?
Amphetamine or cocaine overdose
This can cause an MI in a young healthy person due to coronary vasospasm.
Also look for hypertensive emergency and dilated pupils.
What is the appropriate work up for a pt with stable angina and a normal EKG?
Exercise stress test
Will identify which artery is being occluded
Indicated in a pt with anginal syx with a normal EKG, and is able to exercise at 80% of maximum. If the pt can’t exercise consider dipyridamole (adenosine) - BUT contraindicated in COPD and asthma.
In what 3 ways does amiodarone toxicity manifest?
Pulmonary pathology
- Organizing pneumonia
- Chronic Interstitial pneumonitis
- ARDS
If a pt with a blowing aortic murmur has both right and left sided heart failure - dx and tx?
Congestive heart failure
Can have SOB during his sleep
ACEI will decrease mortality
Pt has Raynaud phenomenon and antinuclear ab. Dx?
Scleroderma
How would you manage HTN in a scleroderma pt with renal involvement?
ACEI
BP control helps to limit the progression of the dz.
CCB’s can be added if ACEI does not yield a response
What findings would indicate constrictive pericarditis?
CXR - calcification on pericardium
Pericardial knock shortly after aortic valve closes (sudden cessation of ventricular filling)
A systolic ejection murmur is indicative of?
Mitral regurgitation
Crescendo- Decrescend murmur. Dx and workup?
Aortic stenosis
Order a transthoracic echo
What test should be ordered for a pt suspicious for claudication?
Ankle-Brachial index (<0.9)
Generally caused by valvular insufficiency
Upper thigh and buttock claudication + Impotence is suggestive of?
Leriche syndrome.
When would Doppler U/S be ordered for a pt?
Concersn for deep venous insufficiency or thrombosis
Which murmur is heard in mitral stenosis?
Increased S1 intensity (early in the dz)
MS decreases LV filling and elevates left sided atrial pressures
Can progress to pulmonary HTN
A pt with pulmonary edema is given furosemide and dobutamine and becomes hypotensive. Tx?
Dopamine
Dobutamine causes hypotension by decreasing afterload, which is best corrected with DA to increase afterload
Which lab finding strongly correlates with risk for future coronary events
LDL > 100
Most common murmur in a young healthy adult?
Mitral valve prolapse
Usually asymptomatic
Associated with Marfans
Most likely cause of crescendo decrescendo murmur in a 80 y/o man
Calcification of the aortic valve
Calcification of a bicuspid aortic valve is more common in middle aged patients
Rheumatic fever is common cause of aortic stenosis
Criteria for CABG?
Significant left main coronary stenosis >70% stenosis of LAD and Left circumflex 3 vessel dz 2 vessel dz in DM Sifnificant LAD dz with LV ejection <50%
Short PR interval on EKG
Pre-excitation syndrome (Wolf-Parkinson-White)
Caused by an aberrant connection between the atria and ventricle
Digoxin, CCB, and Beta blocker further block the conduction and cause Vtach or SVT
Criteria for valve replacement in aortic stenosis?
Symptomatic AS
Severe AS in those undergoing CABG
AS with ejection fraction <50%
When should a lipid decreasing medication be initiated in a person with CAD or a equivalent (ie DM, Peripheral artery dz, AAA, carotid artery dz)
when LDL > 100
What is the best managment for Peripheral vascular dz (PVD)?
Calf claudication
Cilostazol - Phosphodiesterase inhibitor - decreases platelet aggregation and is a direct arterial vasodilator
Pt presents with dyspnea, Right sided heart failure, hepatomegaly, DLCO 54%
Pulmonary HTN
Significant decrease in DLCO without restrictive ventilatory abnormalities -> vascular dz
Pan systolic murmur 3-5 days after an MI
Papillary muscle rupture
Get to the OR
Younger female with MI like syx
Variant angina Transient ST segment elevations Transient ischemia Usually have PMH of Raynaud or Migraines Worsened by cocaine, sumatriptan
Pt has symptomatic hypotension and bradycardia. Tx?
IV atropine
Use this first in any severe brady
Pt will most likely need pacing
Initial treatment for a newly diagnosed aortic stenosis?
ACE-I
Number 1 lifestyle modification to control HTN?
Weight loss