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    <title>Lad on ECG Library – LITFL Basics</title>
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    <description>Recent content in Lad on ECG Library – LITFL Basics</description>
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      <title>Lệch trục trái (LAD)</title>
      <link>https://ecgvn.com/vi/posts/left-axis-deviation-lad/</link>
      <pubDate>Tue, 08 Oct 2024 00:00:00 +0000</pubDate>
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      <description>&lt;h4 id=&#34;lệch-trục-trái-lad&#34;&gt;Lệch trục trái LAD&lt;/h4&gt;
&lt;p&gt;&lt;strong&gt;Lệch trục trái&lt;/strong&gt; = trục QRS nhỏ hơn -30°.&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;&lt;strong&gt;Trục bình thường&lt;/strong&gt; = trục QRS giữa -30° và +90°&lt;/li&gt;
&lt;li&gt;&lt;strong&gt;Lệch trục phải&lt;/strong&gt; = trục QRS lớn hơn +90°&lt;/li&gt;
&lt;li&gt;&lt;strong&gt;Lệch trục cực đoan&lt;/strong&gt; = trục QRS giữa -90° và 180° (còn gọi là “trục Tây Bắc”)&lt;/li&gt;
&lt;/ul&gt;
&lt;hr&gt;
&lt;p&gt;&lt;strong&gt;Hệ thống tham chiếu lục trục&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;&lt;img alt=&#34;Haxaxial ECG AXIS Reference 2021&#34; loading=&#34;lazy&#34; src=&#34;https://litfl.com/wp-content/uploads/2018/08/Haxaxial-ECG-AXIS-Reference-2021-1024x986.png&#34;&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href=&#34;https://litfl.com/ecg-axis-interpretation/&#34;&gt;Hệ thống tham chiếu lục trục&lt;/a&gt; – mối liên quan giữa trục QRS và các chuyển đạo mặt phẳng trán của ECG.&lt;/p&gt;</description>
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