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ECG Video-13 (Blog 116) - Axis-Hemiblocks (8-21-2015)

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Published on Aug 21, 2015

This 42-minute video covers the Essentials of Axis Determination & the Hemiblocks. I start from the very beginning with Axis, working up to a practical, clinical approach that stresses what one needs to know about the Hemiblocks. By the end of this video — You should be comfortable estimating Axis and assessing for Hemiblocks using a method that takes no more than a few seconds!

NOTE-1: Links to my ECG Videos (including a folder with Power Point Shows of these videos) — as well as info on my other ECG Resources can be found at — http://www.videoecg.com — Your Questions and Feedback are welcome!

NOTE-2: To facilitate viewing, with rapid access to specific topics of interest — I have made a Timed CONTENTS with LINKS (http://ecg-interpretation.blogspot.co...) — This allows instant Fast Forward on YouTube to the content you are searching for.
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TIMED CONTENTS (Click on Links to Fast Forward! ):
0:00 – Introduction (How to contact me).
1:26 – Why Care about Axis?
3:31 – What is Axis? (Definition, relevant Physiology).
6:01 – Which of the 12 Leads to Use? (Lead locations).
9:01 – The 3 Laws of Electrocardiography (Effect on Axis).
11:19 – The Quadrant Approach to Axis Determination.
12:18 – Defining Normal, LAD, RAD, Indeterminate Axis …
13:19 – Isthe Axis Normal? (Using the “Net” QRS Deflection).
14:49 – Defining the Hemisphere (and fine-tuning the Axis).
17:00 – PRACTICE: What is the Axis?
18:48 – PRACTICE: Is this Still a Normal Axis?
20:43 – PRACTICE: When Lead I is Negative.
21:41 – RAD: When is it seen?
22:21 – PRACTICE: When Leads I and aVF are Negative.
23:31 – Indeterminate Axis: When is it seen?
23:46 – PRACTICE: When Lead aVF is Isoelectric.
24:54 – PRACTICE: When Lead aVF is Negative.
25:41 – LAD: Clinically – What do we care about?
26:08 – HEMIBLOCKS: Intro/What is a Hemiblock?
28:23 – KEY Points: Which Hemiblock is Common?
29:53 – LAHB: Definition/Clinical Features.
31:25 – How to Recognize LAHB within 2-3 Seconds.
32:26 – Recognizing a “Pathologic” Left Axis.
35:49 – PRACTICE: Is there LAHB?
37:25 – Axis with BBB: Is there Bifascicular Block?
38:24 – RBBB: Is there also LAHB? (Using Lead II)
40:15 – RBBB + LPHB: How to Recognize LPHB

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