Cardio Flashcards
Delayed and diminished carotid pulses
Pulsus Parvus et Tardus…AORTIC STENOSIS
Prominent capillary pulsations in fingertips/nail beds
Widened Pulse Pressure…Aortic Regurg
When do you see Pulsus Paradoxus? (exag. decrease in SBP with inspiration)
Pericardial diseases (Cardiac Tamponade), Severe Asthma and COPD
______ can trigger bronchoconstriction in patients with asthma
Aspirin or beta-blockers
Tx for vasospastic angina
Preventative: CCB
Abortive: Sublingual Nitroglycerin
Young patients (<50), hx of smoking, recurrent chest pain lasting <15 min (at rest/sleep)
Vasospastic angina (Hyper-reactivity of smooth muscle)
ECG findings in vasospastic angina
Leads to transmural myocardial ischemia = ST-elevation
Electrical alternas + Sinus Tachycardia
varying amplitude of QRS complex
PERICARDIAL EFFUSION (b/c swinging motion of heart in the sac= beat-beat variation)–>leads to cardiac tamponade. Tx with with emergency pericardiocentesis
Common Complications after MI:
- Hours-2 days =
- hours-1 week =
- hours - 2 week =
- hours - 1 month =
- 2 days - 1 weeks =
- 1 day - 3 months =
- 5 days - 3 months =
hours - 2 days = Re-infarction
hours - 1 week = Ventricular septal rupture
hours - 2 week = Free wall Rupture
hours - 1 month = Post-infarction Angina
2 days - 1 week = Papillary muscle rupture
1 day - 3 months = Pericarditis (Dressler)
5 day - 3 months = Left ventricular aneurysm (ST-elevation, deep Q waves; thin dyskinetic LV; risk of mural thrombus)
Classic Pericarditis ECG findings
Diffuse ST-segment elevations
won’t be seen in Uremic pericarditis
most accurate test for detecting coronary artery disease
Coronary angiogram (cath lab)
What would you expect LV EDV to be in patient with CHF?
Increased LV EDV: due to renal sodium and H20 retention
SVR: Increased (reflexive)
Which anti-htn med has side effect of peripheral edema?
CCB: Amlodipine/Nifedipine
what stimulates renin from JGA? alpha/beta agonist/antagonist?
Beta agonist
What effect would acute MR have on LA or LV?
Wouldnt change LA size/compliance unless chronic; acutely, have increased LV filling pressures
Tx of afib in patient with Wolf Parkinson White
IV Procainamide (or ibutilide)
Note: do NOT use adenosine, beta blockers, digoxin b/c promotes conduction across accessory pathway and thus VFib
What do you need to monitor when using Amiodarone for arrythmias?
PFTs, LFTs, TFTs. Get baseline levels + cxr before initiating
Effect of _____ on Mobitz type 1 vs 2:
- Vagal manuevers
- exercise/atropine
Vagal: worsens type 1, improves type 2
Exercise/atropine: improves 1, worsens 2
what should you look out for in a patient given nitroprusside?
Cyanide toxicity (most common in pt with renal insuff)! AMS, seizures, coma, lactic acidosis
Tx for cyanide toxicity
(i.e. in a pt given nitroprusside and develops seizures/AMS)
Nitrite + thiosulfate, hydroxycobalamin
what should be started in pts with MI within 24 hours (unless CI)?
ACE-I to prevent remodeling (which would lead to DCM)
Recent URI + new-onset CHM
DCM secondary to viral myocarditis (usually coxsackie)
Echo finding in DCM
Dilated ventricles + diffuse hypokinesia (resulting in low EF)
High voltage QRS + lateral ST depression + lateral T-wave inversion
Left Ventricular Hypertrophy (usually due to long standing or secondary htn)
T/F: Mitral stenosis patients commonly develop A-fib due to significant left atrial deviation
True
Loud S1 and diastolic rumbling
Mitral Stenosis
Tx for Aortic Dissection
BETA BLOCKERS, then Vasodilators
–>bb’s help to reduce HR, SBP, and LV contractility
Irregularly irregular rate, ____ p waves, ____ QRS complexes = afib ecg findings
absent
narrow
Management of A-Fib
1a. Rate Control (stable pts): Beta blockers, Diltiazem, Digoxin
1b. Rhythm Control: Anti-arrythmics (i.e. Amiodarone)
2. ALL PATIENTS SHOULD UNDERGO CHADS-VASC thromboembolism risk assessment
Mgmt of pt with acute STEMI
- Medical:
- Oxygen
- Full-dose aspirin (chewed = better absorption)
- Anti-platelet (Clipidogrel/Ticragrelor)
- Nitroglycerin with Morphine (pain)
- Anti-coagulation (heparin)
- Beta blocker - PROMPT REPERFUSION with PCI (ideal, w/in 2 hrs) or fibrinolytic (within 12 hours)
- Start statins after acute
How much carotid stenosis until you need to do surgery (carotid endarterectomy)?
Asx or sx: >60% (men) ; >70% (women)
Management for HCM:
- Avoid volume depletion
- BETA BLOCKERS (pref)…or CCB’s (verapamil/disopyramide)
- ->they prolong diastole and reduce contractility = decreased obstruction
…avoid vasodilators (i thought its good b/c dec afterload) b/c this can in turn decrease preload
mgmt of vasovagal syncope
- Reassurance
- Avoidance of triggers
- Counterpressure Techniques for recurrent eps (assume supine position and do leg raises; leg crossing with muscle tensing; handrgrip; fist clenching)
Syncope associated with emotional/painful stimuli, often ass. with a prodrome (dizziness, pallor, diaphoresis, abdominal pain, sense of warmth)
Vasovagal syncope
predisposition for aortic dissection
<40: many of them from Marfans or cocaine
Most important risk factor in gen population: HYPERTENSION
leads to LV hypertrophy, diastolic HF with preserved EF
severe and long standing HTN (hypertensive heart disease)
Which electrolyte abnormality is a marker for severity of CHF?
Hyponatremia…an independent predictor of adverse outcome
T/F: Increasing Na intake is the initial tx for CHF pts with hyponatremia
False…its to limit water intake
Why does dobutamine help in heart failure?
Primarily acts as Beta-1 agonist = increase contractility (also get inc hr)
Diffuse ST elevation in all leads, except reciprocal depression in aVR
Pericarditis!!! (vs in STEMI, its only ST elevation in select leads)
…Dressler syndrome = post MI pericarditis, within weeks. Tx = NSAIDS
which drugs increase digoxin levels and increase likelihood of toxicity (GI sxs, weakness, arrythmia, neuro signs)?
Amiodarone (decrease digoxin dose by 25% when its started), also verapamil, quinidine, propafenone
What is use-dependance and which anti-arrythmics is this seen with?
-Seen with Class IC (= Flecainide, Propafenone) and Class 4 (CCB Verapamil, Diltiazem)
- enhanced pharm effects during faster heart rates
- class 1C = widening of QRS complex because decrease in impulse conduction during faster hr
- Class 4 = increase PR interval b/c prolong refractory period of AV node
What does hepatojugular reflex indicate?
failing RV that cannot accomodate an increase in venous return with abdominal compression
What do you give patients with chest pain and suspected Acute Coronary Syndrome initially in the ED?
Give Aspirin asap! prevents progression to MI and mortatlity
Tx for STEMI, NSTEMI
STEMI: Immediate cath or thrombolysis
NSTEMI: Anti-coagulation
T/F: Diuretics improve long-term survival in patients with LH failure i.e. post MI
FALSE.
Which meds improve long-term survival in pts with LV failure i.e. post-MI
ACE-I
ARB
Beta-blocker
Mineralocorticoid-R antagonists (Eplerenone, Spironolactone)
Note: CCB, Digoxin and Diuretics = only sx tx
What happens first after MI, papillary muscle rupture or free wall rupture?
Papillary muscle rupture (within 3-5 days)
Free wall rupture occurs 5days - 2weeks later
Acute, severe pulmonary edema and new systolic murmur 3 days after MI
Papillary muscle rupture
shock, distant heart sounds, and JVD 1-2 weeks after MI
Free wall rupture
Digoxin (digitalis) toxicity arrythmia:
Atrial tachy + AV block
T/F: S3 heard in CHF pt
true
isolated systolic hypertension in the elderly
increased stiffness/decreased elasticity of the arterial wall
(SBP >140, DBP <90)
Blue toe syndrome, livedo reticularis, AKI after catheterization
Cholesterol emboli
Screening for AAA
USPSTF recommends men 65-75 who have smoked get a 1-time abdominal US
When do you see Pulsus Paradoxus?
Cardiac Tamponade, Severe asthma or COPD, OSA, Pericarditis, Croup
T/F: Aortic regurg is characterized by pulsus paradoxus
False. Widened pulse pressure.
vs pulsus paradoxus = decrease in amplitude systolic BP >10 on inspiration
T/F: Aortic dissection characterized by widened pulse pressure
false, aortic regurg
Sound created by turbulent flow to ventricles due to increased volume
S3
Mitral regurg, HF
Sound created by atrial contraction fluid hitting stiff ventricle
S4
Aortic stenosis, LVH, Acute MI
Cardiac manifestations of sarcoidosis (pt with Uveitis, dyspnea, erythema nodosum, arthritis, bell’s palsy)
Arrythmia, Heart block, Sudden death. Restrictive cardiomyopathy early, dilated cardiomyopathy late.
Why do patients with sarcoidosis (uveitis, dyspnea, lymphadenopathy) have hypercalcemia?
Increased 1-alpha-hydroxylase mediated vitamin D activation in Macrophages (granuloma)
Uveitis is caused by:
PAIR (including Crohns and UC and Reiters/chlamydia)
Sarcoidosis
causes of Afib
- Hypertensive heart disease (#1), CAD
- Rheumatic mitral valve dz
- OSA, PE
- Hyperthyroidism, Obesity, Alcohol, Cocaine, Theophylline
How to tell if syncope is cardiac or vasovagal/neurogenic?
Cardiac: no prodrome. underlying structural heart dz
Vagal/neuro: prodome = nausea, pallor, dizziness, diaphoresis, warmth
Patient with hypotension has equal diastolic pressures throughout chambers
Cardiac tamponade
Beck’s triad
Cardiac tamponade clinical signs = Hypotension, Increased JVD, distant heart sounds (due to the pericardial effusion)
Mgmt of patient in ED with hypotension, JVD, distant heart sounds, pulsus paradoxus, tachycardia, electrical alterans
This patient has cardiac tamponade.
Need STAT ECHO to dx, and then can surgical/percutanous drainage
Narrow QRS complex
SVT –> typically caused by sinus tachy, aflutter/afib, re-entrant
- ->if hemodynamically stable, can’t give meds…need CARDIOVERSION
- ->otherwise, IV Adenosine. CCB and BB are alternatives.
Ankle-Brachial Index
PVD bitch PVD
Dual platelet therapy
Needed post MI/CAD.
Aspirin + ADP Inhibitor AKA P2y12 receptor blocker (clopidogrel, ticagrelor, ticlodipine)
When does post Mi pericarditis occur?
PERI means around “the date” 4 letters so within 4 days
New S3 after recent travel, no rash, signs of CHF
Viral myocarditis –> causes DCM –> decompensated HF
most common form of paroxysmal SVT
AV nodal re-entrant tachycardia –> re-entrant in AV node.
–>vagal manuevers i.e. cold-water submersion can fix this
Afterload and mixed venous oxygen saturation separate septic shock from cardiogenic/hypovolemic how?
Afterload in septic: low (get vasodilation). Cardiogenic/hypovolemic =high (because constricting down)
MvO2: Septic is high (hyperdynamic circulation due to low afterload, CO is increased and tissues cant extract enough O2. Cardiogenic/hypovolemic low (low tissue perfusion so tissues desperately grab as much O2 as they can)
What drugs should you use for thromboembolism prophy in afib pt?
Warfarin or Direct X Inhibitor (Apixaban/Rivaroxaban/Dabigatrin)
–>NOT ASPIRIN OR CLOPIDOGREL
how do you avoid flushing rxn from Niacin?
It is Prostaglandin-medicated vasoDILATION
–>avoid using Aspirin
Atrial fluid is most commonly caused by:
ectopic foci in pulmonary veins
Atrial flutter is most commonly caused by:
reentrant circuit around tricuspid annulus
Most common cause of Mitral regurg
Mitral valve prolapse (myxomatous degeneration of mitral valve)
Why do you give Adenosine or perform vagal manuevers in patient with some form of supraventricular tachycardia?
Because these cause AV block (aids in dx)
- abolish AV dependent arrythmias i.e. re-entrant tachy like Paroxysmal SVT
- unmask hidden p waves in atrial flutter/fib
- if MAT, atrial tachy is not disrupted
what drugs do you avoid in WPW?
AV nodal blocking drugs like Adenosine, beta blockers, CCB (verapamil), and digoxin
–>promotes conduction across accessory pathway
(these are typically drugs used from SVT’s so keep this exception in mind)