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The ACG- An Introduction
by Dicken Weatherby, ND

For more information on Functional Blood Chemistry Analysis Click Here.

The early ACG, or endocardiograph as it was known back then,
was developed by Dr. Royal Lee, the founder of Standard process.
It was later modified into the modern ACG, or Acoustic

The ACG records the vibrations of blood as it moves through the
four chambers of the heart, the valves, and large blood vessels. The
sounds are recorded in a graph form at four locations on the heart.
The opening and closing of the valves and the contraction of the
heart muscle contribute to the graphical output. Stress on the heart
muscle can cause the graphical output to be irregular and uneven.
A non-stressed heart will produce a very clean output.

The ACG should not be confused with an EKG, which is looking at
the electrical activity in the heart as the electrical current moves
through the cardiac nervous tissue. The EKG is primarily involved
with diagnosing problems with the hearts nervous system and
damage that may be caused to this tissue is readily diagnosed with
an EKG. The EKG is not good at telling us about the health or
function of the heart muscle.

Dr. Royal Lee said "The Heart is the most reflective muscle of
balanced nutrition or malnutrition". The heart sounds as recorded
by an ACG reflect the overall function of the various body systems,
as well as the blood chemistry, the overall nutritional state, and the
health of the heart itself.

The interpretation of the ACG graphs can be especially useful in the
assessment of the following:

  1. B vitamin insufficiencies (especially thiamin and riboflavin)
  2. Vitamin E insufficiency
  3. Oxygenation state of the body
  4. Electrolyte insufficiency
  5. Hepatobiliary function
  6. Adrenal function
  7. Calcium utilization

Each of the above has a distinctive ACG graph and as such the
ACG can be used to identify a problem and also monitor any
prescribed treatment.

For information on ACG equipment and training please contact Dr.
Pavel Nyvlt. He can be reached at 503-294-7070

© 2004 Dicken Weatherby, ND


Dr. Dicken Weatherby is a graduate of the National College of Naturopathic Medicine in Portland, Oregon. He is the co-author of the best-selling book "Blood Chemistry and CBC Analysis- Clinical Laboratory Testing from a Functional Perspective". To learn more about Dr. Weatherby's functional diagnosis books and sign up for FREE functional diagnosis tips, tools, and techniques, visit his web site at

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Blood Chemistry Analysis

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