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Posts Tagged ‘clarkes classification of chd’

Life  is nothing , but the intervening time between the first heart  beat and the last heart beat of an individual  !

Human heart is not an ordinary organ.  Right from the day 22  of fetal life , when the cardiac jelly  begins to beat till  the early  new-born period ,  (In some, even longer !)  it continues to evolve.

We know  heart as a hemodynamic organ . But ,  in the fetus   it is  dynamic in  a  different sense (Embryo-dynamics) . As the mother’s  heart  takes care of the fetal circulation ,  the fetal heart concentrates  on it ‘s  own growth  .The heart learns the  lessons of life in a hard way  , it has to survive the next 70 -80 years independently .

The complexity is enormous . The cardiac muscle  comes  from  mesenchyme, the conducting system  comes from ectoderm .Systematic  events  like , looping  , partition  , regression  of the heart tube should occur at critical times .  Apart from this , the venous and arterial  connections ( Aorta IVC,SVC)  develop concomitantly and has to fuse with respective  chambers without any error.

It is a wonderful biological marvel  happening inside every fetus without the help of any architect  !

The changes do not stop at birth. It continues , well  after delivery . One  hole gets closed(PFO), one conduit disappears (PDA) .One chamber regress (RV) . We, expect all these things to happen in a  meticulous and  sequential  way.

Yes , it happens in most. But , in many with altered bio – genetic forces  things   fail to unfold  in  the programmed way.    It is not at all a surprise ,  to find some common aberration .

So , when some body is born  with a congenital heart defect , don’t blame  it on God .He does his job , in billions and billions of heart in the right manner .

It is our ancestral gene  code that gets awry in a few  !

In Hindu  philosophy  the  defects  we inherit  are the wages we pay for our ancestral misdeeds  .


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