Fetal Congestive Heart Failure Dr. Ajeet Kumar Mishra Chief Consultant Pediatrician and Pediatric Cardiologist Niko Children’s Hospital Chitwan
Causes
Parameters
Basics of Fetal Cardiac Function Fetal Circulation 3 Shunts (DV, PFO, DA) Low Resistance Capacitor (Placenta) Parallel Circulation Complicated by monochorionic twinning Less contractile elements, more non-contractile elements Diastolic dysfunction more common and serious Systolic function difficult to assess, better tolerated
Global Function MPI(Myocardial Performance Index ) ICT+IRT/ET Cursor placement between inflow and outflow Flow alignment necessary Standardized values Can be performed independently for RV and LV Values more than 0.48 impaired function Does not differentiate between systolic and diastolic dysfunction Load Dependent
Diastolic Function AV valve Inflow Pattern: 2 components E- Passive ventricular Filling(Small) A- Atrial Contraction(Tall) E/A Ratio Becomes monophasic with dysfunction Load dependent
Systemic Venous Pressure Diastolic function assessment Sequential changes IVC>DV>UV Normal flow mildly phasic continuous flow
DV
Systolic Function Fractional Shortening Ejection Fraction Load dependent Circumferencial function
Ejection Fraction
TDI Longitudinal Function Relatively Load Independent