IMC-Final Flashcards
Define Dilated Cardiomyopathy
Idiopathic dilated cardiomyopathy is the MC cause of ?
What will be seen on PE
Systolic dysfunction d/t dilation of all chambers and impaired contractility (LVEF <40%)
Indication for cardiac transplant
Heart failure
Megaly Rales S3 gallop JVP
What will be seen on EKG of Dilated Cardiomyopathy
Commonly, ? regurgitation develop and w/ ? risks
What would be seen on CXR
LBBB Arrhythmia Sinus tachycardia
MR- Afib
TR- ventricular arrhythmias
Globular megaly (balloon)
CHF
Pleural effusion R>L
Any dilated cardiomyopathy Pt w/ dyspnea needs ? lab drawn
? is the Dx modality of choice for RV dysplasia
When/why would a biopsy be most helpful
BNP- establishes prognosis/disease severity
Cardiac MRI
Transplant rejection
How is Dilated Cardiomyopathy Tx
CCBs are avoided and only used if ?
All DM w/ Dilated Cardiomyopathy need to be on ? diuretic
Loop ACEI BB
Digitalis for inc contractility
Afib/Flutter
Mineral corticoid antagonist:
Spirinolactone
Eplerenone
What 3 criteria need to be met to use Ivabradine to lower tachy rhythms in Dilated Cardiomyopathy
What medication is tradiationally used more often but is second in line for use
Normally nitric oxide therapy is avoided in AfAm Pts is avoided, however AfAm w/ Dilated Cardiomyopathy may be Tx w/ ? combo drug
LVEF <35%
Resting HR >70bpm
Chronic and stable HF
Digoxin- decreases recurrent hospitalizations and Afib rate control
Hydralazine-Nitrate
When can Pts w/ Dilated Cardiomyopathy induced Afib be converted w/ ?
When is ICD placement considered
Dilated Cardiomyopathy Pts are more at risk for ? compared to ischemic Cardiomyopathy Pts
Synchronized biventricular pacing if:
QRS >150msec w/ significant MR
Ischemic cardiomyopathy w/ LVEF >30% and on medical therapy
Emboli
Pts w/ Dilated Cardiomyopathy induced Afib should be Tx w/ ? anticoagulant unless ?
? is the MC cardiomyopathy
Half of the time this MC is caused by ? and the other half by ?
DOAC;
Warfarin if MS
Dilated- 95%
Idiopathic
Alcoholism
Define Hypertrophic Cardiomyopathy
What causes the outflow obstruction to be worse and causes ? type of dysfunction
What is the end consequence seen in Hypertrophic Cardiomyopathy
LV wall >1.5cm/15mm thick on Echo, MC in septal region
Narrowed w/ systole and
Anterior MV leaflet;
Diastolic dysfunction
Elevated LV diastolic pressure
How is Hypertrophic Cardiomyopathy acquired
This can be confused w/ athletic heart, how is it differentiated
Apical Hypertrophic Cardiomegaly is more common in ? populations
Autosomal dominant mutated genes of sarcomere/myosin heavy chains/Ca regulating proteins
Athletic heart- no diastolic dysfunction
Asian
What type of Hypertrophic Cardiomegaly seen in older adults is d/t ?
What CXR finding is specific to this type
What are the 3 common presenting Sxs if not sudden death
HTN
Sigmoid interventricular septum w/ cardiac knob below aortic valve
Postexertional syncope
Angina
Dyspnea
What is a poor prognostic sign in Hypertrophic Cardiomyopathy w/ elevated LA pressures
What would be seen on PE
? type of valvular murmur is commonly present
Afib
Bisferiens carotid pulse
Loud S4
Triple apical pulse
Prominent A-wave: atrial contraction; absent in AFib
MR
What type of murmur does HOCM cause
What causes the murmur to be louder/softer
These maneuvers are done to differentiate HOCm from ?
Loud systolic cresc-decresc murmur at LLSB
Inc: upright, valsalva (dec LV volume)
Dec: squat, hand grip, leg raise (inc LV volume)
AS- dec stroke volume= dec murmur
Inc w/ squat
Dec w/ valsalva, standing
? EKG finding is nearly universal in all HOCM Pts w/ Sxs
? EKG finding can mimic MIs
TTE is Dx for HOCM and needed to r/o ? other congenital heart dz
LVH
Inferolateral septal Q-waves- 1, aVL, V5-6 and <1 box wide
Ventricular noncompaction- ridges in cardiac walls causing LV to partially fill
? coronary artery issue is seen w/ HOCM
How is this Tx w/ meds
? type of pacing helps Tx these Pts in AFib and prevents progression of hypertrophy/obstruction
Arterial bridging- systolic squeezing of arteries
Metoprolol (initial for Sxs)
Verapamil
Dysopyramide (no mono use)
Diuretic
Short AV-delay biventricular pacing
What HOCM Pts are best managed w/ ICD
When is an ICD consideration warranted
How is HOCM Tx surgically
Any one of:
Malignant ventricular arrhythmia
Unexplained syncope w/ +FamHx sudden death
Wall thickness of 30mm
Unexplained syncope <6mon
Sudden death, 1* relative
Myotomy-myomectomy w/ Alfieri stitch (considerd best Tx w/ outflow relief)
Alcohol ablation in LCA
What are the indications for HOCM Pt to be considered for transplant
Pregnant Pts have increased issues when pressure gradient passes ?
How are these Pts medically managed
Progression to LV dilation
Intractable Sxs
> 50mmHg
Continue BB therapy
What is the next Dx step after a Dx of HOCM is made on Echo
What med classes need to be avoided in HOCM Tx
What drug is c/i in these Pts
Ambulatory ECG
Exercise stress test
Dec preload:
Diuretic ACEI Nitro ARBs
Digoxin- increased force will increase obstruction
Define Restrictive Cardiomyopathy
What is the MC cause
Restrictive Cardiomyopathy mimics ? Dx and is differentiated by ?
Impaired diastolic filling (MC- LV) d/t infiltrates w/ preserved contractile function
Amyloidosis
Constrictive pericarditis-
ventricular interaction accentuated w/ inspiration (absent in RC, which has inc pulmonary arterial pressure)
What two imaging results is suggestive of Restrictive Cardiomyopathy
? method of imaging can identify amyloid deposition in the myocardium and how is it confirmed
? imaging modality is used as a screening test method or if a Dx by Echo is uncertain
EKG w/ low voltage QRS
Echo w/ LVH
Technetium pyrophosphate imaging (bone scan), confirmed w/ biopsy
Cardiac MRI
How is Dx of Restrictive Cardiomyopathy made and w/ ? findings
How is systemic involvement of this condition confirmed
What medication has shown to decrease hospitalizations and improve quality of life
Echo w/ cardiac cath:
Normal chamber size
Reduced LVEF
Rectal, Adipose, Gingival biopsy
Tafamidis
What medication needs to be avoided in Tx of Restricted Cardiomyopathy
Why would CCS be used
How is primary cardiac amyloidosis w/out systemic involvement Tx
Digoxin- predisposes arrhythmias
Conduction abnormalities
Transplant
? is the MC etiology of Restrictive Cardiomyopathy worldwide
What type of extra heart sound does this condition have
? population is most susceptible to idiopathic Restrictive Cardiomyopathy
Tropical Endomyocarditis Fibrosis
S4
Northern European men
? is the MC type of ASD
What is a less common type
This less common type usually also has ? two defects
Ostium Secundum in mid-septum
Ostium Primum- lower septum
MV/TV clefts
VSD
? clot issue can occur in the ASD population
What will be heard on PE
ASDs are the ?MC murmur
Paradoxical embolization
Wide, fixed split S2 (lub dub-dub) w/out inspiration varying
2nd, after VSDs