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2. Bundle branches - Wikipedia

   en.wikipedia.org/wiki/Bundle_branches

   The bundle branches were separately described by Retzer and Braeunig as early as 1904, but their physiological function remained unclear and their role in the electrical conduction system of the heart remained unknown until Sunao Tawara published his monograph on Das Reizleitungssystem des Säugetierherzens (English: The Conduction System of the Mammalian Heart) in 1906. [4]

3. Bundle branch block - Wikipedia

   en.wikipedia.org/wiki/Bundle_branch_block

   Right bundle branch block, incomplete (IRBBB) or complete (CRBBB) Left bundle branch block, incomplete (iLBBB) or complete (cLBBB) The left bundle branch block can be further sub classified into: Left anterior fascicular block. In this case only the anterior half of the left bundle branch (fascicle) is involved; Left posterior fascicular block ...

4. Right bundle branch block - Wikipedia

   en.wikipedia.org/wiki/Right_bundle_branch_block

   A right bundle branch block (RBBB) is a heart block in the right bundle branch of the electrical conduction system. [1] During a right bundle branch block, the right ventricle is not directly activated by impulses traveling through the right bundle branch. However, the left bundle branch still normally activates the left ventricle.

5. Wikipedia : Osmosis/Bundle Branch Block

   en.wikipedia.org/.../Bundle_Branch_Block

   So with right bundle branch block, the right ventricle contracts late. If the block happened to be on the left side instead, a left bundle branch block, the signal would be delayed on that side and so the right ventricle would contract first, and then the left ventricle would contract late.

6. Left bundle branch block - Wikipedia

   en.wikipedia.org/wiki/Left_bundle_branch_block

   Left bundle branch block (LBBB) is a conduction abnormality in the heart that can be seen on an electrocardiogram (ECG). [1] In this condition, activation of the left ventricle of the heart is delayed, which causes the left ventricle to contract later than the right ventricle .

7. Tachycardia-dependent bundle branch block - Wikipedia

   en.wikipedia.org/wiki/Tachycardia-dependent...

   Tachycardia-dependent bundle branch block (TDBBB) can affect either ventricle in the heart, and occurs when the heart's rate of contraction reaches an elevated level and becomes uncoupled from the heart's refractory period (the time it takes for a cardiac cell to "reset" for future contraction).

8. Sitting Too Much Can Increase the Risk of Heart Problems ...

   www.aol.com/sitting-too-much-increase-risk...

   Related: Women Who Drink More Than 8 Drinks a Week Have a Higher Risk of Heart Disease: Study Ajufo confirmed that the study found that an end-of-day workout won’t necessarily reverse the ...

9. QRS complex - Wikipedia

   en.wikipedia.org/wiki/QRS_complex

   Prolonged duration could indicate hyperkalemia [5] or intraventricular conduction delay such as bundle branch block. QRS amplitude: S amplitude in V1 + R amplitude in V5 < 3.5 millivolt (mV) [4] R+S in a precordial lead < 4.5 mV [4] R in V5 or V6 < 2.6 mV; Increased amplitude indicates cardiac hypertrophy: Ventricular activation time (VAT) < 50 ...