Category Archives: Cardiac Rhythm Abnormalities

Inherited Heart Rhythm Clinic | LHSC

Posted: March 8, 2019 at 10:45 pm

LHSC's Inherited Rhythm Clinic is a specialized clinic that deals with patients referred for management of inherited heart rhythm problems. Patients seen in the clinic are referred for assessment of a range of different cardiac conditions that can lead to abnormal heart rhythms that could result in fainting, cardiac arrest or sudden death. Many of these patients have a family history of individuals who may have been affected by one of these conditions. Continue reading

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Overview of Abnormal Heart Rhythms – Heart and Blood …

Posted: March 2, 2019 at 5:47 pm

NOTE: This is the Consumer Version. Continue reading

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Cardiac Rhythm – Coverage | Medtronic

Posted: January 23, 2019 at 6:45 am

Medicare Coverage for Pacemakers, Implantable Cardiac Defibrillators and Cardiac Resynchronization Therapy DevicesMedicare National Coverage Determination (NCD) Medicare has National Coverage Determinations for Single and Dual Chamber Pacemakers and Implantable Cardiac Defibrillators. The following resources relate to Medicare Coverage for Cardiac Rhythm and Heart Failure (CRHF) products and procedures. Below are the links to the Medicare National Coverage Determinations for CRHF therapies. Continue reading

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Implantable Cardiac Defibrillators (Implantable …

Posted: at 6:44 am

Implantable cardiac (cardioverter) defibrillators facts What are implantable cardiac defibrillators (ICDs)? An implantable cardioverter defibrillator (ICD) is a small electronic device installed inside the chest to prevent sudden death from cardiac arrest due to life threatening abnormally fast heart rhythms (tachycardias) Continue reading

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Heart – Wikipedia

Posted: December 20, 2018 at 12:42 am

Heart The human heart The heart is a muscular organ in most animals, which pumps blood through the blood vessels of the circulatory system.[1] Blood provides the body with oxygen and nutrients, as well as assists in the removal of metabolic wastes. In humans, the heart is located between the lungs, in the middle compartment of the chest.[3] In humans, other mammals, and birds, the heart is divided into four chambers: upper left and right atria; and lower left and right ventricles.[4][5] Commonly the right atrium and ventricle are referred together as the right heart and their left counterparts as the left heart Continue reading

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Troponin – Wikipedia

Posted: at 12:42 am

Troponin, or the troponin complex, is a complex of three regulatory proteins (troponin C, troponin I, and troponin T) that is integral to muscle contraction[2] in skeletal muscle and cardiac muscle, but not smooth muscle. Discussions of troponin often pertain to its functional characteristics[3] and usefulness as a diagnostic marker[4] or therapeutic target[5] for various heart disorders, in particular as a highly specific marker for myocardial infarction or heart muscle cell death.[3] Troponin is attached to the protein tropomyosin and lies within the groove between actin filaments in muscle tissue. In a relaxed muscle, tropomyosin blocks the attachment site for the myosin crossbridge, thus preventing contraction. Continue reading

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Cardiac Abnormalities Associated With Charcot-Marie-Tooth …

Posted: December 8, 2018 at 9:41 pm

Charcot-Marie-Tooth disease is a sensorineural peripheral polyneuropathy. Continue reading

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Heart Arrhythmia – Arizona Heart Rhythm Center

Posted: November 20, 2018 at 9:45 am

Individuals experience the symptoms of arrhythmia differently. Some who have this condition may not feel any symptoms, and their arrhythmia will go unnoticed until it is detected by a physician during a routine examination. Others may experience only minor symptoms, while some are sensitive to the slightest sensation. Symptoms commonly reported include: The hearts electrical system generates impulses that are felt as heartbeats. Every cell in the heart muscle is capable of initiating an electrical impulse; therefore, it is normal to have occasional premature beats that can occur under normal conditions. If you have rapid or irregular heartbeats, this can cause a sensation called palpitation. Patients describe palpitations as fullness in the throat or neck or as feeling a more forceful beat. They are usually felt at times when the mind and body are relaxed, so patients often experience palpitations in the evening when reading, watching television, or getting into bed. Feeling palpitations sometimes causes anxiety that can produce increased adrenaline levels, which, in turn, can increase the frequency of the premature beats and make the palpitations worse. Although palpitations can be a benign condition, they should always be evaluated by a cardiologist/electrophysiologist to rule out any underlying problems. Some … Continue reading

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Frequency of Cardiac Rhythm Abnormalities in a Half …

Posted: July 11, 2018 at 2:48 pm

Abstract Background: The frequency of cardiac rhythm abnormalities and their risk factors in community-dwelling adults are not well characterized. Methods: We determined the frequency of rhythm abnormalities in the UK Biobank, a national prospective cohort. We tested associations between risk factors and incident rhythm abnormalities using multivariable proportional hazards regression. Results: Of 502 627 adults (median age, 58 years [interquartile range, 13]; 54.4% women), 2.35% had a baseline rhythm abnormality. The prevalence increased with age with 4.84% of individuals aged 65 to 73 years affected. During 3 368 332 person-years of follow-up, 15 906 new rhythm abnormalities were detected (4.72 per 1000 person-years; 95% confidence interval [CI]: 4.654.80). Atrial fibrillation (3.11 per 1000 person-years; 95% CI: 3.053.17), bradyarrhythmias (0.89 per 1000 person-years; 95% CI: 0.860.92), and conduction system diseases (1.06 per 1000 person-years; 95% CI: 1.021.09) were more common than supraventricular (0.51 per 1000 person-years; 95% CI: 0.480.53) and ventricular arrhythmias (0.57 per 1000 person-years; 95% CI: 0.550.60). Older age (hazard ratio [HR]: 2.35 per 10-year increase; 95% CI: 2.292.41; P Conclusions: The frequency of rhythm abnormalities in middle-aged to older community-dwelling adults is substantial. Atrial fibrillation, bradyarrhythmias, and conduction system diseases account for most rhythm conditions. Abnormalities of cardiac … Continue reading

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