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The LV angiogram that stunned me  !

See how a heart is encased within the pericardial shell , still fighting hard

Thanks to circulation for it’s greatness  to offer such great video free

http://circ.ahajournals.org/content/vol118/issue16/images/data/1685/DC1/CI191060.DSmovie2.AVI

The one and only journal for cardiovascular surgery from the subcontinent. Great to  know   full text articles are available from year 2003  , free of cost .Every cardiologists from India must read this journal regularly to update  about what our surgical colleagues are doing  in our country.

Thanks to the  National Informatic centre  for hosting this journal in their server .

http://medind.nic.in/ibq/ibqai.shtml

Which you think is the most important journal in cardiology ?

  • JACC ?
  • Circulation ?
  • American journal of cardiology ?
  • American heart journal ?
  • Heart rhythm ?
  • European heart journal ?
  • The Heart  ?
  • Journal of invasive cardiology ?
  • NEJM ?
  • Lancet ?

None of the above  . . . is the right answer !

Probably,  the best journal  that is going to have the  greatest impact in cardiology practice in the future  could be  this  . . .

 Unfortunately  most  cardiologists are unaware of   this journal . The need for this journal , that  too from most respected Circulation family , will vouch for its importance in the current era  of  cardiology  that is driven more by the market forces than by the academics.

Click here  to reach  journal

Journal  Highlights

  • This  journal is 3 year old , and most of the medical colleges   do not subscribe to this.
  • None of the 100  cardiologists  who were questioned , were unaware of such a journal.
  • Even those who read this journal often term as boring  , academic and not practical !

 

The Circulation team which  started this journal  with  only one purpose  . . .that is ,  auditing the uncontrolled  proliferation of  pseudoscientific literature without proper quality assessment and dubious outcomes. Three cheers to the circualtion team for publishing this journal and let us propogate the importance of this publication.

LBBB is probably the most important  conduction defect of the heart .When we say LBBB , we visualize a  strikingly  wide bizarre qrs complex .

Left bundle even though is considered  a discrete structure , the fascicles  make it a diffusely spread structure. Many varieties of LBBB with various degrees of involvement occur.

Talking about the basics of  LBBB  electrophysiology  is out of place for the current generation cardiologists,  who  have little spare time as  they sweat it out inside the cathlabs.

In early 1960s and 70s great articles came from pioneers regarding these defects. If we want get a good insight  read  this  articles from  Sodi palleres .Who  says LBBB is a dynamic process, where it can occur from mild functional  delay to a total block .

The conduction  properties of left bundle is very much influenced by heart rate.

Law of statistics would  suggest  for every complete LBBB  at least three to 4 times incidence of incomplete  LBBB

Then . . .

Why we are not diagnosing ILBBB often ?

  • We miss it
  • Mistake it with LVH
  • We know it  is there , but we do not  want  to diagnose it .

How to diagnose ILBBB?

See  Sodi palleres criteria*

What is the relationship between qrs width and completeness of LBBB ?

Surprisingly and contrary to the belief , the width of the qrs has no linear correlation between severity of LBBB. In fact incomplete  LBBB can occur with even 150ms qrs !

Then ,  what  exactly determine the completeness of LBBB ?

What  matters is , whether the down coming impulse gets blocked  and split in the  left side of the IVS or not ? This causes the  the septal vector to  change  it’s direction ( ie  right to left instead of the normal left to right) It  removes the initial small r wave in v1  and q in v6  in complete LBBB. In  incomplete LBBB these  r and q are  often retained .

What is the differential diagnosis of ILBBB ?

Type B WPW may mimic LBBB and vice versa.

LV hypertrophy .

Differences : See table in  the Barold’s article  linked above .

Unanswered questions

  1. How common is ILBBB in STEMI ?
  2. How often ILBBB progress to LBBB ?
  3. ILBBB in dilated cardiomyopathy : Is desynchrony an issue ? (Normal QRS CHF !)
  4. Is functional  rate dependent  LBBB in cornary care units  same as transient  ischemic LBBB ?
  5. Intermittent LBBB and Incomplete LBBB  aren’t they  synonymous ?

Final message

ILBBB is not that uncommon as one would  tend to perceive.

Reference

My humble tributes to  Barold, Sodi -palleres , and Leo  Schamroth . Probably  one of the best  article on ILBBB is linked below. Reviewed    in 1963 !  Not much data has been added  in the next 47 years as on 2010

There are thousands of medical journal published worldover. Dozens are available in the field of cardiology .Only a few  are dedicated for pediatric cardiology.  Annals of pediatric cardiology is one .

It is all the more  creditable , as it comes from India , A country which is lesser known for scientific infrastructure  .  Full credit to the  pediatric cardiologist associataion of India and the medknow publishers for  bringing  this  highly specialised scientific content in this part of the world .

Association of pediatrics of India  has done a wonderful job .This may the first of it’s kind to formulate a excellent guidelines for managing CHD in India . This was made possible by the consensus conference on CHD held in AIIMS in 2007.

A must read for every physician, pediatrician and  cardiologist

It is recommended , this  guideline should be incorporated in every undergraduate curriculum of  medicine .This article which was published three years ago ,  should  have been published in the Indian  heart journal also.

Thanks to Indian association of pediatrics for providing this article  free

Link to article.2007 consenus conference on CHD Newdelhi

Here is one of   the  very good resource   for  all those basic questions we often ask  in pediatric cardiac catheterisation. Mind you ,  great books do not come free of cost .

Have a preview . Thanks to Google books

Click on the book to enter  , if  you are lucky you will get the  information you need   free  . . .

The most famous and popular view in clinical echocardiography is para sternal long axis view.It gives us an instant information about the status of left atrium , left ventricle and aorta.Left atrium appears to be seen in full. Still , one should realise it is far from truth.There is a huge blind spot  for left atrium in this view .

For a complete imaging of LA one need to do a short axis view at aortic level, and of course a 4 chamber view . All these three views put together , can at best give a 80%  exploration of LA .The rest of the  20%(  some times vital !) can be seen only be transesophageal echo .

Why para sternal long axis fail to give even glimpse of the 4 pulmonary veins ?

  • Pulmonary veins are probably ,  the most vital structure  in LA . There are 4 veins , generally  arranged in 2 pairs
  • Unfortunately all these 4 veins does  not  interrupt the ultrasound beam in this view .The beam in para sternal view crosses  the anterior and lateral surfaces and to a  very small area of inter atiral septum(  IAS )
  • These enter  the posterior surface of the LA in an oblique angle . The angle of entry is widely variable .Some times they need to run a parallel course with LA posterior wall . This makes recognition and delineation  of PV from LA very difficult ..
  • Since all   4 pulmonary veins are located in the posterior aspect of LA ,  they  are best visualized either in apical 4 chamber (Right pulmonary veins) or short axis views(Left pulmonary veins)

When can pulmonary veins visible in PS- LAX view ?

When PVs take an abnormal course like in TAPVC or when they enter coronary sinus etc .

Rarely ,  huge LA enlargement may pull or push the PVs and make them visible in LAX view.

See the link

Human body is a collection of trillions of cells.  Life  is nothing but , a bundle of energy flowing across each of these cells  .Every  organ  has a  specailised mode of communication among themselves and others. When a cell is in an excited state , there is a  likelihood of spontaneous electrical activity.This can happen in nerve cells, cardiac cells , GI tract,  or virtually in  any cell  which has a porous cell membrane and ionic fluxes across it .

  • Each cell membrane has a resting membrane potential . It  varies between -60 to – 90mv in most cells. When this potential increases there a propensity for  arrhythmias in heart  and convulsions in the brain , peristalsis in intestines and so on .
  • Drugs  like local anesthetic lignociane acts by blocking the  Na+ channels and there by neural activation .Similarly magesium  acts on these channels to reduce the excitability of these cells.
  • We know,  the sharp ascending stroke of cellular  action potential is mediated by Na + .Blockage of this channel blunts the action potential voltage and thus  the  early and late after depolarisation is prevented
  • Magnesium sulphate’s anticonvulsant action is directly  attributable  to this membrane stabilising action

Thus , membrane stabilising action  can be termed as “membrane sedating”  action

Common sense would  indicate  medical care is  meant for the sick and ill  . Relieving  the mankind  from all those  suffering  with a healing hand has made the  medical profession noble and sacred .Medical science   grew with this sole aim  many centuries ago  .Some  times  we succeeded   and many times we failed  and the journey is  continuing .

In those days ,scientists were dedicated , inventions were genuine and were driven by a need to conquer a diseases .Some where along the line, (May be in the last 2-3 decades?)   our quest for money power exceeded commonsense  . Commerce entered   every  walk of life and  medical science became the biggest causality.

The purpose of noble   profession was forgotten . Simultaneously   public awareness and quality if life vastly improved in many of the developed countries . So the traditional illnesses  either disappeared  or reduced   to a great extent . Then came the life style diseases.The cost of treating  an illness spiraled too much especially   in the scientifically advanced countries . What was perceived  as great health care system  became  the  most ridiculed  health system in the planet  ?

Why ?  The simplest answer to this q  is

In the name of science  and  modernity , medical treatment  was glorified beyond the level it deserves ,  and hence  the  cost of treatment is  kept at artificially  & foolishly high  (This often involves  diagnostic   exploration of human body with modern gadgets without any meaningful   purpose )  .

ie , In  a  nutshell  of modern medicine is   often a medical mirage than a miracle . We know ,  the chances of success  as we  try  to chase it. If we think the  world is   waking  on this issue .

We are in for a surprise ! Even as  every one  is asking for outcome analysis in modern health care

more and more countries just imitate the failed ( Scientific and moral failure ) western models of health care .

When major illness are reducing in a society what will the health care providers do ?

Feel happy ?  Yes that’s what   a  sane   mind  would   do .  In a capital  rich ,   health conscious ,   knowledge  driven  society the opposite happens .

When  the patient  input  into a top hospital  reduces , the MBAs   in  them plan strategies  to bring  increase the bed occupancy rate and  maintain  patient  parity.

If sufficient  patients  are not there in a community what shall we do ?

Create  more  patients

Creating  new patients is a too dangerous game ,  what shall we do ?

In the  name  of preventive screening   let  us  label   normal  persons as patients .

How to do it ?

The following examples  are personal observation made in  huge city of educated elite  in a developing country . Excuse me if it offends a few  . . .

Define, redefine all criteria that define the disease (There are

  • Make, 130/85mmhg of blood pressure as pre hypertension and make them visit our HT clinic every month.
  • In the  name of risk stratification do CRP, Micro HDL , Apo a   etc and  catch them  for primary risk reduction for a non existing illness
  • Let us  label  all the   age related  bone loss as  deadly osteoporosis and do bone graft.
  • Let us  call  the occasional post dinner stiff stomach as non ulcer dyspepsia   and  insert a  endoscope  into the patient tummy .
  • Do a 64slice CT  in a master health check and convert many  of the healthy  normals into carriers   soft  coronary plaques.
  • Do a ultra sound scan  in every one who takes alcohol and  give our brains a temptation to label  the normal  fatty streaks  as infiltrative  fat disorder .
  • Do routine pelvic scan and detect  sub clinical fibroid uterus as potentially  malignant and  post them for hysterectomy on the next operation day.
  • Convert all healthy women as a  potential cervical cancer  and administer  herpes vaccine and help  the vaccine company share  move up in wall street !
  • Finally , screen  all  our  playful   kids for   learning disability and   label them as slow attention deficit disorder  and  make their  life permanently   miserable .

The list is endless  . . .

Final message

We  are in a  era ,  where  even   a  simple  illness  ( common cold ? )  can be converted into a billion dollar industry . ( Are you aware of H1N1 fiasco ,  The role of   WHO  and  mystery labeling of pandemic !)

While the above  misadventure  with scientific excesses   goes  on merrily  , lest we forget , millions of children  and adults  suffer in misery for want of  live saving  investigations and drugs  in any country .

When a person with a head injury dies due a  missed   subdural  hematoma for want of CT scan in one hospital  ,  ” in the adjacent hospital”  a wealthy and healthy man  ( who got admitted for master health check up ) undergoes  a series of scans  all over the body   even as he is  watching   the  satellite TV in  the comfort of a  five star suite   !

God will never  forgive  the  noble professionals   if they are part of this  negative health care  forces

Finally  ending with a very positive note !

The new   initiative by  Obama   , ” Health care  for  the uninsured ” is to be welcomed as great move  and will do a world of good .

But , our  only  request  to WHO ( or related   bodies )  is to create a forum or authority  to  impeach all fancy diseases from the medical   literature  !