DCM / transplant Flashcards
dp/dt definition
Index of myocardial contractility
Time takes for LV to produce pressure of 32 mmHg
Longer time = worse
dp/dt equation
= 32 / time in sec
Normal dp/dt
> 1200
Borderline dp/dt
1000-1200
Abnormal dp/dt
<1000
Relative wall thickness
2 x PWTd / LVIDd
Normal LV mass index women
<= 95
Normal LV mass index men
<= 115
RWT >0.42, normal LV mass index
Concentric remodeling
RWT <0.42, normal LV mass index
Normal
RWT > 0.42, high LV mass index
Concentric hypertrophy
RWT < 0.42, high LV mass index
Eccentric hypertrophy
Markers for poor prognosis
Pulsus alternans in LVOT PW DT < 115 Restrictive filling RV dysfunction, pHTN MR
Isolated Non-compaction of LV definition
Altered myocardial wall with thin compacted layer and thick non-compacted layer (prominent trabeculation)
Jenni criteria for LV non-compaction
Non-compacted to compacted 2:1, short axis, end systole
Color flow in recesses
Trabeculation meshwork typically in apex, inferolateral
Chemo toxicity
10-15% decline in GLS predicts future events
Signs of transplant rejection
Increased wall thickness, LV mass
EF reduced > 10%
Diastolic dysfunction (dec MV DT, dec Eā, inc E/eā)
RV biopsy complications
Effusions
VSD/ASD
TV dysfunction
Sphericity index
Ratio of short-axis length (mid-ventricular) to long axis length
Less spherical with dobutamine = predictor of recovery for idiopathic DCM
Aorta-mitral curtain thickening or calcification suggestive of
Radiation heart disease
Echo features of HCM a/w SCD
Increased LV WT LV dysfunction LV apical aneurysm Increased LA volume index Restrictive filling LVOT obstruction
Hemochromatosis echo features
Mildly dilated LV cavity
Global dysfunction
Normal or mildly increased wall thickness
Chagas echo
Normal LV size with apical aneurysm and LV thrombus
Apical HCM features
LV apex >15mm
Apical to posterior wall thickness >1.5, absence of other etiologies of LVH
LV non-compaction criteria
2 layers of myocardium visible
Non-compacted to compacted >= 2 at end-systole
Prominent trabeculations
Deep recesses which fill with contrast / color doppler
Most important echo predictor of mortality in AL amyloid
LV wall thickness
Crypts suggestive of
HCM
ARVD features
RV akinesia, dyskinesia or aneurysm
RVOT dilatation
Reduced RV FAC
Paradoxical LVOT diastolic flow in HCM
Apical aneurysm / outpouching
Increased risk of SCD