Figure 4
Pulsed wave (PW) Doppler images of the right atrial appendage pre (A)
and post cardioversion (B) and left atrial appendage pre (C) and post
cardioversion (D). Alternating amplitudes of Doppler velocities (white
arrows) corresponding to mechanical atrial contraction following atrial
flutter waves (yellow arrows) are shown pre cardioversion in right (A)
and left atrial appendage (C). Doppler velocity amplitudes (white
arrows) corresponding to mechanical atrial contraction following
electrical atrial P wave (yellow arrows) returned to normal post
cardioversion in both right (B) and left atrial appendage (D). Mitral
inflow PW Doppler showing minimal atrial mechanical contraction
velocities (white arrows) following flutter waves preceding each QRS
complex (yellow arrows) pre cardioversion (E) F) Mitral inflow PW
Doppler post cardioversion showing presence of mechanical atrial
contraction (white arrows) following atrial P waves (yellow arrows),
however there is E and A approximation due to first degree AV block and
relative increased heart rate of 80 bpm.