• Premature Atrial Contractions (PACs)
    • Fetus with intermittent PACs
    • Intermittent fetal ectopy is observed on 4 chamber view
  • Premature Atrial Contractions (PACs)
    • Spectral Doppler across the mitral inflow and aortic outflow
    • Frequent PACs (represented by the stars) are noted which appear to be conducted (given each one is followed by an aortic outflow Doppler)
    • V=  aortic outflow spectral Doppler
    • A = normal E/A wave across mitral valve representing a normally conducted atrial beat
  • Premature Atrial Contractions (PACs)
    • M-mode through the right atrium (top) and left ventricle (bottom)
    • Frequent PACs (represented by the stars) are noted which appear to be conducted
    • Atrial bigeminy is noted (PACs are every other beat)
  • Premature Atrial Contractions (PACs)
    • M-mode through the right atrium (top) and left ventricle (bottom)
    • Frequent PACs (represented by the stars) are noted which appear to be blocked (not followed by an early V)
    • Atrial bigeminy is noted (PACs are every other beat)
  • Premature Atrial Contractions (PACs)
    • Color M-mode through the atrium (top) and ventricle (bottom)
    • Frequent PACs are noted
    • Frequent atrial bigeminy is noted (PACs are every other beat)

Here it is.