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Archive for May, 2009

Thrombolytic therapy ,  has been  the specific treatment  for STEMI for  many decades. Primary PCI*  is  shown to be  superior  than  thrombolysis  if   performed   early  by an experienced  team in a dedicated facility. (*Conditions apply). It is estimated ,   currently only a  a fraction  STEMI  population get primary PCI (<5%) in ideal [...]

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Apart from  acute  coronary syndrome,    cardiac  failure is   the most common clinical  presentation of  CAD. Cardiac failure ,  classically present with dyspnea on rest or on exertion , while angina is the dominant presentation in ACS.  
What if  ,  both these  occur together in an acute fashion ?
Yes ,  if it occurs  together [...]

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Failed thrombolysis is an important clinical  issue  in STEMI   as  successful thrombolysis  occurs  only in  about 50-60%  of pateints . The typical criteria to define failed thrombolysis is  the  regression  of less than 50% of sum total( or maximum)  ST elevation in infarct leads.
So what do you do for these patients with failed thrombolysis [...]

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NSTEMI  constitutes a  very heterogeneous population .The cardiac   risk   can vary  between very low to very high .  In contrast ,  STEMI patients  carry  a high risk for  electro mechanical complication including   sudden death .They all need immediate treatment  either with  thrombolysis or PCI to open up the blood vessel  and salvage the [...]

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Atrial septal defect is one among the commonest congenital heart disease .After years of controversy, there is consensus  now , all significant ASDs  need to be closed ,  at whatever age it is detected.
This rule does not apply to small ASDs without chamber  right atrial and right ventricular dilatation. These defects and PFOs need not [...]

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Acute coronary syndrome is the commonest cardiac emergency. STEMI and NSTEMI are the two clinical limbs of ACS. Generally they have distinct clinical, ECG, angiographic features.(Ofcourse,  with some degree of overlap) . It is  a  mystery , both clinical presentations differ so much inspite of the common denominator  , namely ,  an injured plaque with [...]

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Can we advice CABG for single vessel disease  ?
Yes, CABG  may be indicated  in

Critical , proximal , complex  LAD disease   with or without  ostium involvement.
Many of the bifurcation lesions with large and significant  side branch
Small caliber LAD with diffuse disease .

When these occur  in diabetic  subjects , the  indication for CABG is more certain [...]

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How good is Troponin T or I  to rule out acute coronary syndrome in the emergency room  when a  patient presents  within two to three hours after the onset of symptoms ?

Very useful
Useful
Rarely useful
Not useful
Not at all useful

The answer is  5 , can be 3 or  4 , never 1 or 2 !
If you are [...]

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Ventricular remodeling  follows large myocardial infarction .This term denotes to  change in size , shape  and function  of the ventricle   due to altered  myocyte geometry .It is now believed  , this  process begins to occur very early  following a STEMI.(less than 24hours)

In which MI remodeling is more common ?
Any MI of large size , especially  [...]

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Scientifically ,  the  indication for coronary revascularisation   should be  based on following

Patient’s  symptom ( more specifically angina , dyspnea is less important !)
Prov0kable  ischemia  ( A significantly positive stress test )
Signifcant LV dysfunction with  documented  viable myocardium &  residual ischemia
A revascularisation eligible coronary anatomy * TVD/Left main/Proximal LAD etc ( *Either 1, 2 or [...]

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