Second Degree Heart Block - Articles

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How will you differentiate a wenkebach’s Mobitz type 1 AV block from type 2 second degree AV block if the conduction ratio is 2: by Dr. Sangareddi V. Medical Doctor

Posted Wed 11 Nov 2009 10:01pm (Not exclusively ) located in the infra hisian area .This makes this type of block very unstable and these patients have a high risk for going in for complete heart block and often require... It is the classical description of wenkebach AV block type 1 there is progressive prolongation of PR interval followed by a blocked p wave and hence a dropped qrs complex Read on »

What are critical differences between complete heart block and AV dissociation ? by Dr. Sangareddi V. Medical Doctor

Posted Sun 13 Sep 2009 10:23pm CHB and AV dissociation are often confused with one another . While CHB is an important cause for AVD , there are distinct differences which have clinical implications. This table is an attempt to simpify the understanding of the two. Corections and suggestions welcome. This is a high resolution image , to read better right click on the ... Read on »

Ventriculophasic sinus arrhythmia in complete heart block by Dr. Sangareddi V. Medical Doctor

Posted Sat 20 Dec 2008 7:17pm Ventriculophasic sinus arrhythmia is a non-respiratory sinus arrhythmia seen in complete AV block. The PP interval enclosing a QRS complex is shorter than a PP interval not enclosing a QRS. The Mechanism The proposed mechanism is the increased blood flow into the SA node artery during ventricular systole stimulating it to produce Read on »

How to manage complete heart block during pregnancy ? by Dr. Sangareddi V. Medical Doctor

Posted Sun 19 Sep 2010 11:34am For the lay public the term complete heart block (CHB) often convey a sinister message . When encountered in pregnancy, it is frightening for the physicians as well . One need not say . . .the anxiety to the Obstetrician ! Congenital complete heart block is the usual etiology. Though there are other important causes of CHB Read on »

Right Bundle Branch Block with Subtle ST Elevation: LAD 95% occluded by Stephen Smith Posted Thu 28 Jan 2010 12:49pm An 81 yo woman presented at 2 AM to the ED with severe substernal chest pressure. This ECG was recorded There is sinus rhythm with a PVC, and Right Bundle Branch Block (RBBB). Normally there is no ST elevation with RBBB. In fact, normally, there are inverted T waves (discordant to a positive QRS due to the large R' wave, of the rSR') and from Read on »

What kind of AV block is this?? And where is the coronary occlusion?? by Stephen Smith Posted Tue 31 May 2011 1:16pm , there was a proximal RCA occlusion. Answer to rhythm: Notice the p-waves are inverted! Thus, they are retrograde. (or there is a low atrial pacemaker and 3rd degree block, and sinus brady... down to ventricles. This was initially diagnosed as complete AV block. What is it really? Here the p-waves are highlighted by arrows Answer to artery: First Read on »

Left Bundle Branch Block and Left Anterior Descending Artery occlusion: Serial ECGs then T-wave inversion after reperfusion by Stephen Smith Posted Sun 31 Jul 2011 6:15pm A 50 yo male presented with chest pain. This ECG was recorded at 0415. There is sinus tachycardia. There is left bundle branch block (LBBB). All ST-T complexes are discordant. However, the ST-T in V1-V4 is excessively discordant: with 6 mm ST elevation, V3 meets criterion 3 of Sgarbossa's criteria (giving 2 points, not enough for a diagnosis Read on »

New Left Bundle Branch Block is a poor indicator of coronary occlusion by Stephen Smith Posted Mon 08 Mar 2010 11:19am tachycardia with left bundle branch block (LBBB). A previous ECG from one year prior was normal without LBBB. According to the ACC and AHA, new LBBB in the presence of ischemic... with severe aortic stenosis. Here is the initial ECG The first troponin returned positive at 0.20 ng/ml (LoD .04 ng/ml, 99% reference less than 0.1 ng/ml) and a second ECG Read on »

Heart drug may block breast canc ... by Dr. Rubens D. Medical Doctor

Posted Tue 02 Jun 2009 6:58pm Heart drug may block breast cancer gene WASHINGTON, 03 june 2009– A gene that is highly active in up to 20 percent of breast cancer cases might be blocked... is blocked by a drug that's already available on the market," Dr. Arul Chinnaiyan, who led the study, said in a statement. Chinnaiyan and colleagues looked at nearly 3,200 microarrays Read on »

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