Myocardial infarction (STEMI) occurs in two distinct arterial territories .The anterior LAD circulation and postero- inferior RCA/LCX circulation.The incidence is equally shared.
There has been some learned and unlearned perceptions about Inferior MI.
Inferior MI is less dangerous than anterior MI. True or false ?
Answer: Essentially true in most situations.
Reasons.
Inferior wall of the heart (strictly speaking there [...]
Archive for July, 2009
Why inferior MI is considered “Inferior” ?
Posted in Cardiology - Clinical, Cardiology -Interventional -PCI, Cardiology -unresolved questions, Cardiology-Arrhythmias, cardiology -ECG, cardiology -Therapeutics, cardiology- coronary care, cardiology-Anatomy, tagged acc aha, acs, acute coronary syndrome, cardiogenic shock, co dominat coronary circulation, coronary artery, domianant lcx, dominat rca, failed thrmbolysis, inferior stemi, inferior vs anterior mi, infero lateral mi, infero posterior mi, infero posterior stemi, left anterior descending, left circumflex artery, nstemi, primary pci, right coronary artery, rv infarction, rv mi, stemi on July 17, 2009 | 2 Comments »
Coronary hemodynamics in 100% occlusion ?
Posted in Cardiology - Clinical, Cardiology -Interventional -PCI, Cardiology -unresolved questions, cardiology -Therapeutics, cardiology- coronary care, tagged pci, stemi, nstemi, thrombolysis, primary pci, ptca, nejm, cto, coronary artery, tctmd, scai, jacc, des, europcr online, stents, coronary collateral circulation, toat study, courage study, chronic total occlusion, oat study, open artery hypothesis, 100% lad, 100% rca, plain balloon angioplasty on July 15, 2009 | Leave a Comment »
Total coronary artery occlusion is a common finding in CAD especially in chronic stable angina. Normal coronary blood flow is 5 % of cardiac output that amounts to 250-300ml/mt.At an average heart rate of 70/mt , each beat injects about 5cc blood into the coronary circulation.This is shared between two coronary arteries. This means , [...]
EP Lab digest recognises this blog – A Link to my interview
Posted in Uncategorized, tagged madras medical college, dr s venkatesan, www.drsvenkatesan.com, ep lab digest, ep lab, venkatesan on July 14, 2009 | Leave a Comment »
Thanks to wordpress.This blog has caught the attention of some professional sites.
I was interviewed by Jodie Elrod on behalf of EP lab digest July 09 Issue
How to prevent contrast induced nephropathy in cath lab
Posted in Uncategorized on July 10, 2009 | Leave a Comment »
Contrast induced nephropathy (CIN) is potentially a serious problem. The following precautions are useful in the prevention of CIN.Patients with serum creatinine>1.5mg carry a progressive risk .Diabetics and elderly are more prone.Protienuria is a added risk.
Adequate pre procedure hydration is a must . Normal saline (.45%NaCl) infused over 6 hours on the day prior to [...]
What are the usual & unusual causes for cardiac source of emboli ?
Posted in Cardiology - Clinical, Uncategorized, tagged cardaic source of emboli on July 10, 2009 | Leave a Comment »
Common causes
Left atrial appendage clots
Left atrial clots
LV mural thrombus (Post MI, DCM)
Mitral aortic valve infective vegetations
Conditions that could be commoner than we think!
Aortic valve calcific debri
Aortic arch atheromas
Paradoxical embolism through foramen ovale.*
If we consider incidence of patent foramen ovale in general population is up to 20% the problem of paradoxical embolism could be really significant.PFO [...]
3 minutes crash course on ventricular ectopic beats (VPDs)
Posted in Cardiology - Clinical, cardiology -Therapeutics, tagged ventricular ectopic beats, VPD on July 9, 2009 | Leave a Comment »
Ventricular ectopic beats are the most common cardiac electrical abnormality for which cardiologist’s consultation is sought.VPDs are one of most benign observations in ECG and and almost every heart experiences it. In 24 hour holter recordings it was reported up to 25% of healthy individuals .
In spite of this , the fear of noting a [...]
Non dilated cardiomyopthy : An under diagnosed entity !
Posted in Cardiology - Clinical, My presentations, tagged cardiomyopathy, DCM, dcmp, drsvenkatesan, hcm, non dilated cardiomyopathy, who cardiomyopathy on July 9, 2009 | Leave a Comment »
How will you refer to a ventricle which is not dilated but still has severe global contractile dysfunction ?
Traditionally cardiomyopathy is classified as
Dilated (DCM)
Hypertrophic(HCM)
Restrictive (RCM)
But there is large group of pateints who do not show any of the above features and still have global hypokinesia contractile dysfunction. this group has been largely ignored .It could [...]
What is the mechanism of renal failure in infective endocarditis ?
Posted in Cardiology - Clinical, tagged infective endocarditis on July 8, 2009 | Leave a Comment »
Infective endocarditis (IE) continues to be a dreaded medical problem. The clinical outcome has not improved much , in spite of availability of powerful antibiotics. Early surgery in eligible patients could provide the best possible results.
One of the major determinants of morbidity and mortality in IE is the renal involvement.
Kidney gets affected in almost all [...]
What is the mechanism of LV dysfunction in severe longstanding aortic stenosis ?
Posted in Cardiology - Clinical, tagged aortic stenosis on July 7, 2009 | Leave a Comment »
Aortic stenosis is one of the commonest valvular heart disease.Degenerative, calcific aortic valve is the underlying pathology . Many of the degenerative aortic valve is thought to be a sequel to bicuspid aortic valve .The exact incidence of BCAV contributing to degenerative aortic stenosis is difficult to determine as many of these leaflets lose it’s [...]
Why mitral valve replacement carries poorer outcome than aortic valve replacement ?
Posted in Uncategorized, tagged avr, mvr on July 6, 2009 | Leave a Comment »
The valve replacement surgery is one of the great innovations in cardiac surgery. The common disorders that require mitral and aortic valve replacement are
Degenerative , calcific aortic stenosis and regurgitation.
Rheumatic mitral, aortic valve disease.
Ischemic heart disease -Ischemic MR
Some cardiomyopathies
The mortality in valve replacement surgeries vary between AVR, MVR, and DVR.
AVR – 2-5%
MVR 4-12%
DVR 6-15%
Source CTS.net
Determinants [...]
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