{"id":141662,"date":"2024-09-11T04:24:45","date_gmt":"2024-09-11T04:24:45","guid":{"rendered":"https:\/\/websitedesigns.com.au\/elankanew\/?p=141662"},"modified":"2024-09-11T04:24:45","modified_gmt":"2024-09-11T04:24:45","slug":"faulty-heart-beat-arrythmia-by-dr-gnana-sankaralingam","status":"publish","type":"post","link":"https:\/\/websitedesigns.com.au\/elankanew\/faulty-heart-beat-arrythmia-by-dr-gnana-sankaralingam\/","title":{"rendered":"FAULTY HEART BEAT – ARRYTHMIA\u00a0\u00a0– By Dr. Gnana Sankaralingam"},"content":{"rendered":"

FAULTY HEART BEAT – ARRYTHMIA\u00a0\u00a0– By Dr. Gnana Sankaralingam<\/strong><\/span><\/h2>\n

\"Dr.<\/p>\n

\"<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/strong>It is electricity that makes the heart to beat. Heart has an inbuilt electrical system that ensures the orderly contraction of its two upper chambers, the atria which pump blood into the lower chambers the ventricles, which in turn contract and push out blood. All these take less than a second. Starting point for this is the natural pacemaker known as sino-atrial (SA) node, a collection of cells located in upper right atrium, whose activity is controlled by nerves from the brain: sympathetic to trigger it and parasympathetic acting as a brake. Both act to regulate the rhythm, so that heart contracts at 60 to 100 beats a minute.<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0SA node acts like a spark plug, spontaneously producing an electrical signal which it sends through a network of wires which are modified nerve cells, to all four chambers of the heart. Triggered by the SA node, muscle cells use the electricity to start the contraction process, producing the heart beat. Signals then travel to atrio-ventricular (AV) node, a small mass of muscular fibres between the four chambers of the heart, which forms the electrical link between the top and bottom chambers. Current then passes down through a bundle of muscle fibres and spreads rapidly to the muscles of both ventricles causing them to contract at the same time. AV node slows down the electrical signal which gives time for ventricles to be filled before contraction occurs. After a break of 0.5 secs, cycle starts again.<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 There are reasons why electrical signalling through the heart can go wrong such as issues with natural pacemaker (SA node), conduction problems with system of wiring which are specialised muscle cells, damage to the heart muscle that blocks the electrical signals to certain parts of the heart wall, chemical imbalances in the heart muscle cells which interfere with their battery function or malfunction of the nervous system controlling the heart beat. Most rhythm disorders are associated with ageing due to normal wear and tear, and also as a consequence of diseases affecting coronary arteries supplying heart muscles.<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Faulty heart beat can be due to irregularity of rate: slow beats (Bradycardia) or fast (Tachycardia) or irregulaity in rhythm: fibrillation (atrial or ventricular), flutter (atrial) or skip beats, in which heart cannot pump adequate blood to the body. Impulses originate normally from SA node, and problems faced by it ending up in change of heart rate. Impulses can also originate from abnormal sites such as AV node, atrial wall and ventricular wall where it can affect both rate and rhythm. Heart disease could also affect conduction in fibres resulting in blocks. Symptoms include palpitations due to racing heart even at rest, shortness of breath, chest discomfort due to flutter or missed beat or dizziness and fainting attacks.<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Most common entity is atrial fibrillation (AF), which causes fast chaotic heart beat, which tend to occur in those over 60, as well due to mital stenosis, thyrotoxicosis, ischaemic heart disease or hypertension. Here random electrical charge cause atria to quiver affecting ability of the heart to pump blood effectively. Most serious result of untreated AF is stroke, as feeble pumping action of heart allows blood to pool causing clots, which are shot to the brain, which is prevented by giving blood thinning medication in the treatment.<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Other important irregularities are, supraventricular tachycardia (SVT), bradycardia, and ventricular fibrillation (VF). SVT leads to abnormally fast rate of 150 – 300 beats per min. which may last for minutes, hours or days. Its effects are temporary but unpleasant, usually caused by faulty electrical connections in the heart, may be linked to asthma drugs, alcohol or emotional upset. Bradycardia is where heart beats slower than 60 beats per min. usually starting in \u00a0SA node. It can be due to ageing, low thyroid function, imbalance of electrolytes such as high potassium or drugs such as beta-blockers. In heart block also heart beats slowly when electrical signal to make heart contract are partially or totally blocked, due to damage or scarring of the heart wall disrupting the conducting system, commonly due to ageing or following heart attack or heart surgery. VF is dangerous, and if not attended to immediately will be fatal, where the electrical rhythm becomes chaotic and the ventricles no longer beat effectively. It could be secondary to a heart attack or electorlyte disturbances. \u00a0<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Medications like anti-arrythmics are the most common and first line in treatment of majority of heart beat problems as most of the abnormal rhythms respond to them. Beta blockers such as Atenolol, Bisoprolol and Metoprolol slow down the heart rate and calcium channel blockers such as Diltiazem act by reducing the amount of calcium which is needed by muscular lining of heart muscles to contract, entering cells of the heart. Interventional cardiology such as cardioversion, catheter ablation or implant of pacemaker or cardioverter may be necessary for serious types. Cardioversion is carried out under general anaesthesia which involves stopping the heart momentarily with an electric current, the shock making it to spontaneously revert back to normal heart rhythm, procedure taking around 20 minutes. Catheter ablation is where thin tubes are passed through arteries in wrist or groin, to block the pathways of faulty electrical signals using heat, radio frequency energy or extreme cold. Procedure may take 8 to 10 weeks to work, most of them needing second one.<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Pacemaker is a small electrical device about the size of a match box, placed under the skin near the collar bone on left side of the chest, connected by thin wires to a battery slipped beneath the skin of the shoulder. Typically they work on demand, detecting if your heart has nissed a beat and when it does, send out electrical signals through wires at steady rate to make the heart to contract and produce a beat. There are modern micro pacemakers size of rice grain, which are fitted into muscular wall of right atrium via a catheter, with no need for wiring, to a battery pack implanted under the skin. Cardioverter defibrillator (ICD) also implanted under the skin, send larger electrical shocks to the heart if it slows to such an extent that it is likely to go into cardiac arrest. Battery function records a vertical line in ECG tracing in both devices, that must be checked regularly and replaced if needed.<\/span><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 You should avoid certain things if you have this problem, such as intake of caffeine in large amounts either in coffee or in combination with adrenaline like substances in cold and flu medicine, strenuous exercises and roller coaster rides. Unfortunately many are not spotted and therefore treated, with significantly raised risk of stroke. Halter machine worn externally to record heart beat pattern for 24\/7, detects any silent abnormality.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span><\/p>\n

\"Faulty<\/span><\/p>\n

\"\"<\/span><\/p>\n

Normal Electrocardiographic Tracing<\/span><\/p>\n

\"\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0<\/span><\/p>\n

Red Arrows show Pacemaker Spikes<\/span><\/p>\n

Click here to receive your free copy of the eLanka Newsletter twice a week delivered directly\u00a0to\u00a0your\u00a0inbox!<\/span><\/strong><\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

FAULTY HEART BEAT – ARRYTHMIA\u00a0\u00a0– By Dr. Gnana Sankaralingam \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 It is electricity that makes the heart to beat. Heart has an inbuilt electrical system that ensures the orderly contraction of its two upper chambers, the atria which pump blood into the lower chambers the ventricles, which in turn contract and push out blood. All […]<\/p>\n","protected":false},"author":3,"featured_media":141666,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"aside","meta":{"footnotes":""},"categories":[20,46879],"tags":[70392,70382,70387,70393,70389,70394,70398,70395,70385,70383,70384,70399,70397,70386,70396,70391,70390,70388],"class_list":{"0":"post-141662","1":"post","2":"type-post","3":"status-publish","4":"format-aside","5":"has-post-thumbnail","7":"category-articles","8":"category-dr-gnana-sankaralingam","9":"tag-anti-arrhythmic-medications","10":"tag-arrhythmia-causes-and-treatment","11":"tag-atrial-fibrillation-af","12":"tag-beta-blockers-for-heart-rate-control","13":"tag-bradycardia-and-tachycardia","14":"tag-cardioversion-treatment","15":"tag-cardioverter-defibrillator-icd","16":"tag-catheter-ablation-procedure","17":"tag-electrical-signals-in-heart","18":"tag-faulty-heartbeat","19":"tag-heart-rhythm-disorders","20":"tag-heartbeat-monitoring-devices","21":"tag-micro-pacemaker-technology","22":"tag-pacemaker-heart-treatment","23":"tag-pacemaker-implantation","24":"tag-supraventricular-tachycardia-svt","25":"tag-symptoms-of-heart-arrhythmia","26":"tag-ventricular-fibrillation-vf","27":"post_format-post-format-aside"},"yoast_head":"\nFAULTY HEART BEAT - ARRYTHMIA\u00a0\u00a0- By Dr. Gnana Sankaralingam - eLanka<\/title>\n<meta name=\"description\" content=\"\u00a0 It is electricity that makes the heart to beat. 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