{"id":3100,"date":"2016-03-23T14:56:19","date_gmt":"2016-03-23T06:56:19","guid":{"rendered":"https:\/\/www.sozocardiology.com\/?page_id=3100"},"modified":"2025-12-19T14:26:17","modified_gmt":"2025-12-19T06:26:17","slug":"12-lead-electrocardiogram-ecg","status":"publish","type":"page","link":"https:\/\/www.sozocardiology.com\/zh\/heart-investigations\/12-lead-electrocardiogram-ecg\/","title":{"rendered":"12\u5bfc\u8054\u5fc3\u7535\u56fe (ECG)"},"content":{"rendered":"<p><em>\u4e2d\u6587\u7ffb\u8bd1\u7a0d\u540e\u63d0\u4f9b<\/em><\/p>\n<h2 style=\"text-align: left;\">Conduction system of the Heart<\/h2>\n<p style=\"text-align: justify;\">Your heart has an electrical system that controls the speed and pattern of your heart beat. A normal \u201csinus rhythm\u201d starts from the Sinoatrial (SA) node and spreads down to the Atrioventricular (AV) node as the atria contract and force blood into the ventricles. The ventricles then contract and pump blood out of the heart as electrical signals reach the ventricular muscle cells.<\/p>\n<p style=\"text-align: left;\">\n<p><span><img decoding=\"async\" alt=\"\" data-id=\"3722\" width=\"889\" data-init-width=\"1701\" height=\"502\" data-init-height=\"960\" title=\"ecg_diagram\" loading=\"lazy\" src=\"\/\/www.sozocardiology.com\/wp-content\/uploads\/2020\/06\/ecg_diagram.jpg\" data-width=\"889\" data-height=\"502\" style=\"aspect-ratio: auto 1701 \/ 960;\"><\/span><span><img decoding=\"async\" alt=\"\" data-id=\"3723\" width=\"1600\" data-init-width=\"1920\" height=\"800\" data-init-height=\"960\" title=\"ecg_graph\" loading=\"lazy\" src=\"\/\/www.sozocardiology.com\/wp-content\/uploads\/2020\/06\/ecg_graph.jpg\" data-width=\"1600\" data-height=\"800\" style=\"aspect-ratio: auto 1920 \/ 960;\"><\/span><\/p>\n<h2 style=\"text-align: left;\">Definition<\/h2>\n<p style=\"text-align: left;\">An <strong>ECG (Electrocardiogram)<\/strong> is a simple, non-invasive and painless recording of the electrical activity of your heart on a graph paper.<\/p>\n<h2 style=\"\">What can an ECG detect?<\/h2>\n<p><strong>Video on various heart rhythms<\/strong><\/p>\n<ul>\n<li style=\"\"><span style=\"\"><strong>Arrhythmias<\/strong> \u2013 Abnormal heart rhythms resulting in irregular heart beats or palpitations<\/span><\/li>\n<li style=\"\"><span style=\"\"><strong>Cardiac ischemia<\/strong> \u2013 Heart artery blockages resulting in poor blood flow to the heart muscle<\/span><\/li>\n<li style=\"\"><span style=\"\"><strong>Acute myocardial infarction<\/strong> \u2013 Ongoing heart attack<\/span><\/li>\n<li><span><strong>Old myocardial infarction<\/strong> \u2013 Previous damage to the heart muscle<\/span><\/li>\n<li><span><strong>Dilated cardiomyopathy<\/strong> \u2013 Structural abnormalities of the heart such as heart chamber enlargement<\/span><\/li>\n<li><span><strong>Ventricular hypertrophy<\/strong> \u2013 Thickened heart muscles due to high blood pressure<\/span><\/li>\n<li><span><strong>Pericarditis<\/strong> \u2013 Inflammation of the sac that surrounds the heart<\/span><\/li>\n<li><span><strong>How well a current heart disease treatment<\/strong> (eg. pacemaker device) is working<\/span><\/li>\n<\/ul>\n<h2 style=\"\">Who will benefit from this test?<\/h2>\n<h3>Patients with symptoms of<\/h3>\n<ul>\n<li style=\"\"><span style=\"\">Chest pain<\/span><\/li>\n<li style=\"\"><span style=\"\">Shortness of breath<\/span><\/li>\n<li style=\"\"><span style=\"\">Irregular heart beats<\/span><\/li>\n<li><span>Recurrent giddiness or fainting spells<\/span><\/li>\n<li><span>Patients planning to participate in strenuous sporting activities<\/span><\/li>\n<li><span>Patients with a family history of sudden cardiac death<\/span><\/li>\n<li><span><a href=\"https:\/\/www.sozocardiology.com\/zh\/heart-screening\/\" style=\"outline: none;\">As part of Heart Screening<\/a><\/span><\/li>\n<\/ul>\n<h2>How to prepare for the test<\/h2>\n<ul>\n<li style=\"\"><span style=\"\">Wear a shirt that can be easily removed so as to facilitate placement of electrodes on the chest<\/span><\/li>\n<li style=\"\"><span style=\"\">Avoid full-length hosiery as electrodes will be placed directly on your legs<\/span><\/li>\n<li style=\"\"><span style=\"\">Avoid any emollients or lotions on the day of the test as they interfere with the electrode-skin contact<\/span><\/li>\n<li><span>Inform our doctor if you are on any medications or supplements as they may affect the outcome of your ECG<\/span><\/li>\n<\/ul>\n<h2>How is the test performed?<\/h2>\n<ul>\n<li style=\"\"><span style=\"\">You will be asked to lie down on a couch and a cardiac technician will attach 10 electrodes with adhesive pads to the skin on your chest, arms and legs. Men may need their chest hair shaved to allow a better connection<\/span><\/li>\n<li style=\"\"><span style=\"\">The ECG machine will create a picture on a graph paper of the electrical impulses that travel through your heart<\/span><\/li>\n<li style=\"\"><span style=\"\">Your ECG pattern will be reviewed by our doctor and kept on file for comparisons with future ECG recordings<\/span><\/li>\n<li><span>The whole process typically takes only a few minutes and is painless<\/span><\/li>\n<\/ul>\n<h2>More Information<\/h2>\n<ul>\n<li style=\"\"><span style=\"\"><a href=\"http:\/\/lifeinthefastlane.com\/ecg-library\/basics\/diagnosis\/\" style=\"outline: none;\">ECG Clinical Interpretation<\/a><\/span><\/li>\n<li><span><a href=\"https:\/\/my.clevelandclinic.org\/services\/heart\/disorders\/arrhythmia\" style=\"outline: none;\">Learn more about abnormal cardiac rhythms<\/a><\/span><\/li>\n<\/ul>\n<h3 style=\"text-align: left;\">Don&#8217;t wait for your symptoms to worsen.<\/h3>\n<p><strong>\u65e9\u671f\u5e72\u9884\u53ef\u4ee5\u633d\u6551\u60a8\u7684\u751f\u547d\u3002<\/strong> <\/p>\n<p>\u5982\u679c\u4e0d\u52a0\u4ee5\u63a7\u5236\uff0c\u5fc3\u810f\u75c5\u53ef\u80fd\u4f1a\u5bfc\u81f4\u4e25\u91cd \u540e\u679c\u3002\u8d8a\u65e9\u8bca\u65ad\u6cbb\u7597\uff0c\u8d8a\u65e9\u5fc3\u5b89\u3002<\/p>\n<p>  __CONFIG_colors_palette__{&#8220;active_palette&#8221;:0,&#8221;config&#8221;:{&#8220;colors&#8221;:{&#8220;62516&#8221;:{&#8220;name&#8221;:&#8221;Main Accent&#8221;,&#8221;parent&#8221;:-1}},&#8221;gradients&#8221;:[]},&#8221;palettes&#8221;:[{&#8220;name&#8221;:&#8221;Default Palette&#8221;,&#8221;value&#8221;:{&#8220;colors&#8221;:{&#8220;62516&#8221;:{&#8220;val&#8221;:&#8221;var(&#8211;tcb-skin-color-0)&#8221;}},&#8221;gradients&#8221;:[]}}]}__CONFIG_colors_palette__ <a href=\"https:\/\/www.sozocardiology.com\/zh\/contact\/\" style=\"\"> <span><span>\u9884\u7ea6<\/span><\/span> <\/a>  <\/p>","protected":false},"excerpt":{"rendered":"<p>If you are viewing this page in Chinese, translations are coming soon Conduction system of the Heart Your heart has an electrical system that controls the speed and pattern of your heart beat. A normal \u201csinus rhythm\u201d starts from the Sinoatrial (SA) node and spreads down to the Atrioventricular (AV) node as the atria contract [&hellip;]<\/p>","protected":false},"author":3,"featured_media":0,"parent":2704,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_joinchat":[],"footnotes":""},"class_list":["post-3100","page","type-page","status-publish","hentry","post-wrapper","thrv_wrapper"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>12-Lead Electrocardiogram (ECG) &#8212; SozoCardiology - Dr Ooi Yau Wei Interventional Cardiologist<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.sozocardiology.com\/zh\/heart-investigations\/12-lead-electrocardiogram-ecg\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"12-Lead Electrocardiogram (ECG) &#8212; SozoCardiology - Dr Ooi Yau Wei Interventional Cardiologist\" \/>\n<meta property=\"og:description\" content=\"If you are viewing this page in Chinese, translations are coming soon Conduction system of the Heart Your heart has an electrical system that controls the speed and pattern of your heart beat. A normal \u201csinus rhythm\u201d starts from the Sinoatrial (SA) node and spreads down to the Atrioventricular (AV) node as the atria contract [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.sozocardiology.com\/zh\/heart-investigations\/12-lead-electrocardiogram-ecg\/\" \/>\n<meta property=\"og:site_name\" content=\"SozoCardiology - Dr Ooi Yau Wei Interventional Cardiologist\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/sozocardiology\/\" \/>\n<meta property=\"article:modified_time\" content=\"2025-12-19T06:26:17+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.sozocardiology.com\/heart-investigations\/12-lead-electrocardiogram-ecg\/\",\"url\":\"https:\/\/www.sozocardiology.com\/heart-investigations\/12-lead-electrocardiogram-ecg\/\",\"name\":\"12-Lead Electrocardiogram (ECG) &#8212; SozoCardiology - Dr Ooi Yau Wei Interventional Cardiologist\",\"isPartOf\":{\"@id\":\"https:\/\/www.sozocardiology.com\/#website\"},\"datePublished\":\"2016-03-23T06:56:19+00:00\",\"dateModified\":\"2025-12-19T06:26:17+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.sozocardiology.com\/heart-investigations\/12-lead-electrocardiogram-ecg\/#breadcrumb\"},\"inLanguage\":\"zh-CN\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.sozocardiology.com\/heart-investigations\/12-lead-electrocardiogram-ecg\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.sozocardiology.com\/heart-investigations\/12-lead-electrocardiogram-ecg\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.sozocardiology.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Heart Investigations\",\"item\":\"https:\/\/www.sozocardiology.com\/heart-investigations\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"12-Lead Electrocardiogram (ECG)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.sozocardiology.com\/#website\",\"url\":\"https:\/\/www.sozocardiology.com\/\",\"name\":\"SozoCardiology - Dr Ooi Yau Wei Interventional Cardiologist\",\"description\":\"Heart screening packages,  cardiac services and investigations\",\"publisher\":{\"@id\":\"https:\/\/www.sozocardiology.com\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.sozocardiology.com\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"zh-CN\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.sozocardiology.com\/#organization\",\"name\":\"Sozo Cardiology\",\"url\":\"https:\/\/www.sozocardiology.com\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-CN\",\"@id\":\"https:\/\/www.sozocardiology.com\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/www.sozocardiology.com\/wp-content\/uploads\/2020\/05\/cardiology_singapore_best_reccomended.png\",\"contentUrl\":\"https:\/\/www.sozocardiology.com\/wp-content\/uploads\/2020\/05\/cardiology_singapore_best_reccomended.png\",\"width\":450,\"height\":129,\"caption\":\"Sozo Cardiology\"},\"image\":{\"@id\":\"https:\/\/www.sozocardiology.com\/#\/schema\/logo\/image\/\"},\"sameAs\":[\"https:\/\/www.facebook.com\/sozocardiology\/\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"12-Lead Electrocardiogram (ECG) &#8212; SozoCardiology - Dr Ooi Yau Wei Interventional Cardiologist","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.sozocardiology.com\/zh\/heart-investigations\/12-lead-electrocardiogram-ecg\/","og_locale":"zh_CN","og_type":"article","og_title":"12-Lead Electrocardiogram (ECG) &#8212; SozoCardiology - Dr Ooi Yau Wei Interventional Cardiologist","og_description":"If you are viewing this page in Chinese, translations are coming soon Conduction system of the Heart Your heart has an electrical system that controls the speed and pattern of your heart beat. 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