What are critical differences between complete heartblock and AV dissociation ?
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Dr. Sangareddi V.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 ...
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Ventriculophasic sinus arrhythmia in complete heartblock
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Dr. Sangareddi V.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
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How to diagnose complete heart block without ECG ?
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Dr. Sangareddi V.Posted
Fri 18 May 2012 12:47pm
You are asked to see a patient with a pulse rate of 45 /mt . Is it sinus bradycardia or complete heart block ?
Only one condition , . . . you must conclude in the bed side !
Heart rate may give a clue ( HR of 30-40 is common in CHB . Less common in sinus bradycardia.)
Pulse volume is large in both (More so in CHB )
...
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How to manage complete heartblock during pregnancy ?
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Dr. Sangareddi V.Posted
Sun 19 Sep 2010 11:34am
For the lay public the term complete heartblock (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 heartblock is the usual etiology. Though there are other important causes of CHB
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Heart drug may block breast canc ...
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Dr. Rubens D.Posted
Tue 02 Jun 2009 6:58pmHeart 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
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Right Bundle Branch Block with Subtle ST Elevation: LAD 95% occluded
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Stephen SmithPosted
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
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New Left Bundle Branch Block is a poor indicator of coronary occlusion
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Stephen SmithPosted
Mon 08 Mar 2010 11:19am
Case 1:
A 55 yo male with a history of hypertension but no MI or CHF presented with 5 days of progressive dyspnea without chest pain. Here is his ECG
There is sinus 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
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Probable Left Main coronary artery occlusion/obstruction, with STE in aVR, alternating BBB, and arrest
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Stephen SmithPosted
Sat 21 Nov 2009 10:02pm
of impending complete heartblock below the bundle of HIS, which would lead to asystole or ventricular escape (wide and slow complex). There is persistent ST elevation in aVR and ST... Branch Block. There is concordant ST depression in V2-V4, excessively discordant ST depression in I, aVL, V4-V6, and extremely excessively discordant ST elevation in aVR. ST
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