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Left Atrial Pressure by Color M Mode (CMM)
Calcs>Pressure>LAP by CMM>1
LAP = 5.27 x (E/Vp) + 4.6
to calculate a LAP using Color M-Mode.
1: Obtain a PWD of the long axis view of the mitral
valve. The PWD will yield a E and A wave.
The maximum E wave velocity, Emax should be measured
and entered above.
Step 2: Obtain
a Color M-Mode scan of the left ventricle.
Obtain a color flow doppler of the left ventricle
in the midesophageal view. While in color mode,
add the M-Mode mode to the scan and place the scan
line down the center of the left ventricle.
On the Color M-Mode scan the propagation of flow shows
an early passive filling (E wave) and late active
filling (A wave) of the left ventricle. Using
the caliper function measure the slope of the first
aliasing velocity of the E wave. Enter the slope
(Vp) or velocity of propagation.
This activity has been planned and implemented in accordance with the accreditation requirements and policies of the Accreditation Council for Continuing Medical Education through the joint providership of University of Nebraska Medical Center, Center for Continuing Education and JLS Interactive, LLC.
The University of Nebraska Medical Center, Center for Continuing Education is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians.
This activity is approved by the American Society of Radiologic Technologists (ASRT) as sonography-related continuing education (CE). Credit(s) issued for successful completion of ASRT-approved CE activities are accepted by the American Registry of Diagnostic Medical Sonography, American Registry of Radiological Technologists, Cardiovascular Credentialing International and Canadian Association of Registered Diagnostic Ultrasound Professionals. Contact the applicable registry for additional information / restrictions on their acceptance of ASRT CE credit.