M-Mode Flashcards
(27 cards)
typical temporal resolution of M-Mode?
1000-2000 frames/sec
Describe each letter of this MV M-Mode
E- early diastole/rapid filling
A- atrial contraction
F- diastasis onset
C- Closure of MV
D- Opening of MV
Diagnosis?
SAM
Diagnosis?
SAM
name 2 factors that make gradient worse in SAM
1) Earlier time to onset of septal contact by MV
2) Duration of SAM-Septal contact
Diagnosis
MVP ( >3mm systolic bowing BELOW the C-D line)
Diagnosis?
MVP
Diagnosis
MS
(reduced/loss of the E-F slope of MV M-mode and fish mouth/diastolic anterior motion of posterior leaflet)
Diagnosis?
MS
(reduced/loss of the E-F slope of MV M-mode and fish mouth/diastolic anterior motion of posterior leaflet)
Diagnosis?
Atrial Myxoma
Diagnosis?
Afib
Diagnosis?
AR (LV dilated, fluttering of MV’s anterior leaflet (without loss of A wave like in afib) = austin flint)
Diagnosis?
Bicuspid AV
Diagnosis
Early Systolic Closure of AV from low SV (e.g. low LVEF, significant MR)- notice tapering of AV leaflet
M-Mode of AV showing tapered (not parallel) leaflets, early systolic closure w/ limited AV opening. Diagnosis?
Decreased stroke volume
M-mode of AV w/ thickened leaflets and eccentric closure
Bicuspid AV
M-mode of AV with normal AV opening–> early systolic closure–> fluttering leaflets
Subaortic AS
M-mode of AV showing normal AV opening–> fluttering leaflet- -> mid-systolic closure
HCM/dynamic obstruction
M-mode of AV showing limited AV opening, thick leaflets, central/normal closure
Valvular AS
Name the 3 M-mode findings for PV
Normal/PH/PS
Diagnosis?
DCM
(Large E-point Septal Separation (EPSS))
E-point Septal Separation above which is abnormal (suggesting DCM). When is EPSS not valid?
>10mm
not valid with valvular dz like MS/AR.
Diagnosis?
Constrictive Pericarditis (left shift of interventricular septum during inspiration)
Diagnosis?
Tamponade
(interventricular interdependence, see how the septum moves away from RV and dips towards LV on inspiration)
