causes of sinus bradycardia
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Sinus Tachycardia and Sinus Bradycardia Definition Causes and Treatment Sinus Tachycardia and Sinus Bradycardia General idea with definition and causes and Treatment. Causes of Sinus Tachycardia. Fever, thyrotoxicosis, exercise, anaemia, lack of activity, hypertension etc. Drugs like Sorbitrate, .Nifedipine, nasal decongestants drops, atropine eye drops etc can cause tachycardia.
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Common causes of Sinus bradycardia 36 diseases without any prevalence information. Causes of Sinus bradycardia that are common The following causes of Sinus bradycardia are diseases or conditions that affect more than 1 million people in the USA: Myocardial infarction. more causes...».
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Causes of Bradycardia Causes of Bradycardia. Causes of Bradycardia. Bradycardia has many different causes, including age-related deterioration of the heart, underlying conditions that slow the pacing through the heart, drug abuse and medications. List of causes of Bradycardia. Athlete - a slow heart rate can be normal in very physically fit athletes.
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Medical Dictionary Sinus node reentrant tachycardia Sinus node reentrant tachycardia is a rare type of fast heart rate. This type is caused by abnormal conduction of electrical impulses within the sinus node.
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Bradycardia There are two basic types of bradycardia: 1  Sick sinus syndrome occurs when the sinus node (the heart's own pacemaker) fails and does not reliably trigger heartbeats. 2  Heart block is a complete or partial interruption of the electrical impulses on their way to the ventricles and results in a slow, unreliable heartbeat.
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Top 30 Doctor insights on: Sinus Bradycardia With Nonspecific T Wave Abnormality Healthy, conditioned athletes may have sinus bradycardia while sleeping, sometimes as low as a hr in the 30s! but one key distinction is that the hr increases with exercise. If you have no symptoms, have a normal hr response to exercise, and heart function is nml -- pacer is probably unnecessary. ...Read more
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Supraventricular tachycardia Diagnosis. 1  Sinus tachycardia is physiologic or appropriate when a reasonable stimulus, such as the catecholamine surge associated with fright, stress, or physical activity, provokes the tachycardia. It is identical to a normal sinus rhythm except for its faster rate (>100 beats per minute in adults). Sinus tachycardia is considered by most sources to be an SVT. Sinoatrial node reentrant tachycardia (SANRT) is caused by a reentry circuit localised to the SA node, resulting in a P-wave of normal shape and size that falls before a regular, narrow QRS complex.
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Approach to Bradycardia In cases of pathological causes of bradycardia there is a suboptimal response in heart rate to exercise, while in sinus bradycardia or in bradycardia due to an increased vagal tone, there should be a normal response of heart rate to exercise.
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- A broad variety of other drugs and toxins have been reported to cause bradycardia, including lithium, paclitaxel, toluene, dimethyl sulfoxide (DMSO), topical ophthalmic acetylcholine, fentanyl, alfentanil, sufentanil, reserpine, and clonidine. Sinus bradycardia may be seen in hypothermia, hypoglycemia, and sleep apnea.
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- Sinus tachycardia is usually a rapid contraction of a normal heart in response to a condition, drug, or disease, such as pain, fever, excessive thyroid hormone, exertion, excitement, low blood oxygen level (hypoxia), or stimulant drugs, such as caffeine, cocaine, and amphetamines.
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REFLEXES FROM THE LUNGS AND CHEST WALL Sinus arrhythmia is an irregularity of the heart rate in which there is a. cyclic increase and decrease in the rate of a sinus rhythm. Typically, heart rate increases during inspiration and. decreases during expiration.
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Causes of Sinus arrhythmia Sinus arrhythmia: Related Medical Conditions. To research the causes of Sinus arrhythmia, consider researching the causes of these these diseases that may be similar, or associated with Sinus arrhythmia: Atrial fibrillation. Atrial flutter.
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- The follow list shows some of the possible medical causes of Sinus tachycardia that are listed by the Diseases Database: 1  Phenoxybenzamine. 2  Dicobalt edetate. 3  Near-drowning. 4  Ritodrine. Phaeochromocytoma. 5  Doxapram. Aminophylline.  Tension 1  pneumothorax. Phenylephrine. 2  Dopexamine. Foetal 3  distress. Wolff-Parkinson-White  syndrome.
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- In other cases, however, sinus bradycardia can be caused by a diseased or damaged sinus node and may require treatment with a pacemaker. At rest, the electrical impulses generated by the sinus node typically occur between 50-60 and 100 times per minute. This is called normal sinus rhythm..
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sick sick sinus syndrome a complex cardiac arrhythmia usually associated with syncope and manifested as severe sinus bradycardia alone, sinus bradycardia alternating with tachycardia (see bradycardia-tachycardia syndrome), or sinus bradycardia with atrioventricular block.
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Causes of Bradycardia Following is a list of causes or underlying conditions (see also Misdiagnosis of underlying causes of Bradycardia) that could possibly cause Bradycardia includes: 1  Athlete - a slow heart rate can be normal in very physically fit athletes. 2  Heart conditions. 3  Arrhythmias.  Sinus node disease.
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- Causes of Sinus infection without any prevalence information. The following causes of Sinus infection are ones for which we do not have any prevalence information. 1  Adenovirus-related Cold-sinus infection. 2  Allergic rhinitis. 3  Anterior ethmoidal nerve neuralgia. 4  Atrophic rhinitis. 5  Chronic sinusitis. 6  Cocaine abuse. 7  Common cold-sinus infection.
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Medical Definition of Sinus rhythm Sinus arrhythmia refers to the normal increase in heart rate that occurs during inspiration (when you breathe in). This is a normal response and is more accentuated in children than adults. Sinus tachycardia refers to a fast heartbeat (tachycardia) because of rapid firing of the sinoatrial (sinus) node.
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- Topic Overview. Sick sinus syndrome is the name given to a group of arrhythmias that occur because the normal pacemaker of the heart (the sinus node) does not work properly. Sick sinus syndrome is also called sinus node dysfunction.For more information on other types of sinus node problems, see Types of Bradycardia.ick sinus syndrome is the name given to a group of arrhythmias that occur because the normal pacemaker of the heart (the sinus node) does not work properly.
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The Differences Between Sinus Tachycardia and Supraventricular Tachycardia In sinus tachycardia, the heart beats normally, and blood flow is not changed. The electrical impulses controlling the heart beat fire correctly and automatically from the sino-atrial (SA) node, the heart's pacemaker. Symptoms can include dizziness, fatigue, shortness of breath (SOB) and sweating.
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Bradycardia: Definition, Causes, Symptoms & Treatment Sick sinus syndrome, a group of disorders where the sinoatrial node fails to generate an appropriate heart rate, is another cause of bradycardia. The sinoatrial node is the pacemaker of the heart that sets the pace (or plays) of the heart. It's like the star quarterback of the team.
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Resting Heart Rate FAQ Bradycardia can be caused by: 1  Changes in the heart that are the result of aging. 2  Diseases that damage the heart's electrical system. 3  These include coronary artery disease, heart attack, and infections such as endocarditis and myocarditis. 4  Conditions that can slow electrical impulses through the heart.
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Sick Sinus Syndrome Of the three arrhythmias that fall under the term sick sinus syndrome, sinus bradycardia is the most common. What causes sick sinus syndrome is not completely understood, but we do know that disorders that cause scarring, degeneration, or damage to the heart can cause sick sinus syndrome. These include: idiopathic degenerative disease (changes to the area of the heart around the sinus node that occur with aging)
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Sick Sinus Syndrome Sick sinus syndrome is an umbrella term that covers three heart rhythm problems (arrhythmias): sinus bradycardia, which causes a slow heart rate. tachycardias, which cause fast heart rates, often followed by a very slow heart rate.
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Bradycardia: Definition, Causes, Symptoms & Treatment Another cause of bradycardia is hypertension, or high blood pressure. High blood pressure makes it very difficult for your heart to push blood out into circulation and causes a reflex in your body (called reflex bradycardia) that slows down the heart in order to try and lower the blood pressure.
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- Sinus Tachycardia • Originates in the SA node • Regular; rate >100 bpm • Underlying Cause: stress (SNS activation), exercise, meds, anemia, hypoxia, fever • This is not a problem unless CO is compromised Atrial Flutter • Originates in the atria • Reentry impulse that is repetitive and cyclic • Regular rhythm with a rate of >250 bpm • Ventricular ...