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Archive for the ‘wisdom in cardiology’ Category

Pure science

Whenever possible ,before doing a coronary revascularisation procedure , check twice the segments you try to perfuse is really short of blood supply and truly needs the procedure. Don’t ever waste your resources and try to blood-feed the dead myocardium. It’ can never be awakened !

Pragmatic science

I was conversing with my colleague recently , who has grown into  suave , Interventional cardiologist with a huge academic & societal repute .He owns a personal cathlab and planning to get one more.

I learnt a non-academic reality lesson from him .

myocardail viablity viability study pci ptca cath lab ethics

When planning myocardial revasascularisation,  apart from myocardial viablity status, there is one more viability issue  which is done in the account books of finance mangers across big hospitals. Its Cath lab viablity.  Trust me, he used exactly the same word ! He went on to explain in detail , how, every day there must be a minimum number of procedures to keep the machine alive. Which is under the eagle eyes of the guys who funded the state of the art lab !

“So, what do you say,I asked him ?”

He was frank enough to admit,  he felt always happy when he is able to convert angiograms into angioplasties.He went on to add , the Ideal CAG-PCI conversion ration should be atleast 3:1 or more.

“Whenver I hear such genuine statments from real world people , it pains,  as it tends to confirm my assumptions ”

Final message

I am wondering with all my lost wisdom. Why should any cardiologist after 30 years of training,  fight for cath lab viablity , and get into a conflict with the very organ they are supposed to care and protect.

When did we become so Inferior beings & fight for the survival of these life less machines ?

Meanwhile, major text books , has un-intentionally facilitated this academic deciet .They have largely taken away the sting out of the snake . Myocardial  viablity , hibernating, stunned  myocardium , are rarely given importance nowadays and made it appear taboo concepts,in cardiology academia.

Postamble.

Will be extremely happy if what is portrayed in this post is not really true.

Reference

Nandan S. Anavekar, Panithaya Chareonthaitawee, Jagat Narula, Bernard J. Gersh, Revascularization in Patients With Severe Left Ventricular Dysfunction: Is the Assessment of Viability Still Viable?,
Journal of the American College of Cardiology, Volume 67, Issue 24, 2016,Pages 2874-2887,

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Who is the guiding the guidelines, which have become omnipresent & omnipotent ?

I don’t know really. Some good people I guess. But, the doubt creeps in when they try to coerce it on us.

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A young Indian superstar actor Punnet Rajkumar, suffered a sudden cardiac death last week during a workout at his gym. We don’t really know what happened, was it really a conventional heart attack ? or simply an exercise Induced arrhythmia or an isometric dissecting injury to the coronary arterial (or Aortic) wall. Only a postmortem would have thrown some light. (I am not sure what the ER room ECG showed though) He had excellent physical fitness and was following a good healthy lifestyle. One possibility is extreme physical exertion.

It is ironic, while a sedentary lifestyle is a chronic coronary risk factor, excessive physical activity in the background of emotional stress can be turn out to be an acute risk factor. (This is not to frighten all those young and energetic, it only conveys a simple message. Moderation is a must in any indulgences in life)

AHA has made an elaborate scientific statement on this Issue.

Meanwhile, the entire nation went into cardio-panic mode and TV media houses have become free cardiology consultation rooms. How many will realize sudden cardiac arrest and heart attacks can be totally two different entities. Further, who can teach the public, that endpoint of any life has to be cardiac arrest or a standstill. How unscientific does it sound when someone suggests a CT angiogram for all aged over 40 years ? Guess, who will enjoy whipping and sustaining such a frenzy.

Here is a precise article in Indian express that puts this episode into perspective.

https://indianexpress.com/article/opinion/columns/puneeth-rajkumar-death-doctors-hearth-attack-health-7606581/

The author is Dr. Ganesan Karthikeyan, professor of cardiology at AIIMS with a Global reputation.

 

 

 

 

 

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One big hypertension trial called SPRINT was published in 2015, has caused major delayed aftershocks in the hypertensive world now in 2017.

The new guidelines by 2017  AHA/ACC is based primarily on SPRINT data which in my opinion has so much flaws it shouldn’t have been accepted for publication in the first place. !(Intentions and Aim of a study can never be questioned even by most prestigious journals you know !)

  • The flaws begin right  from study design itself. Why diabetic population was excluded from the SPRINT trial is not clearly answered in the true interest of public.The Ironical argument is diabetic patients had no benefit with intensive BP management in ACCORD study. So why waste another study ! Funny is in’t? 
  • When CVD risk profile is intimately linked with these two major entities (DM/HT) it defies sense to  exclude  one them from the study, which is going to assess population based total  CVD risk reduction.
  • Another dramatic confounder is , 90% of SPRINT patients were taking baseline anti HT drugs. So, the original pressure of these people (No,they are patients really !) should have been high . (If you apply this logic , SPRINT study conclusions will not apply for general population who are healthy and free from drug intake! )
  • SPRINT trial also concluded there is little benefit in acute MI and renal protection. The main benefit that tilted in favor of SPRINT was preventing episodes of cardiac failure which was defined by the primitive , subjective , ever unreliable symptomatology of exertional dyspnea.

The ultimate spoiler in SPRINT 

The modality of BP measurement in SPRINT trial can be  termed as as single fit case for rejecting the study in the world hemodynamic court !

We know BP is a continuous variable, between machines , timing of measurement, persons who measure , hand to hand , beat to beat variation etc etc. The SPRINT BP data was accrued  high-profile “Research standard BP” measured by oscillometry method. Please hold your breath , . . these  machines never measure either systolic or diastolic BP.It detects the peak oscillations from brachial artery when the cuff is deflated and ask the vendor dependent fuzzy logic  algorithm to do a guess work of  SBP and DBP , which  proudly flashes them in various LED colors.

The jury is still out whether the methodology is validated or not. SPRINT data should be thoroughly sanitized with a true clinic BP which would  virtually  mean , recall of this (de) famed study !

Final message

How can such a flawed study be taken as reference for  creating major revision of  Hypertension guidelines? 

This question is to be asked in chorus by all respectable physicians and cardiologists.The World health organisation -WHO , custodian of  human health and the silent watch “puppy” has more work to do ! . . please WHO , wake up and bark !

Reference 

1.A Randomized Trial of Intensive versus Standard Blood-Pressure Control The SPRINT Research Group  N Engl J Med 2015; 373:2103-2116 

2.http://www.acc.org/latest-in-cardiology/articles/2015/12/01/10/04/the-sprint-trial-cons

3.http://www.cardiobrief.org/2017/02/08/new-questions-raised-about-sprint/

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