![]() Koehler, in Encyclopedia of Forensic and Legal Medicine (Second Edition), 2016 Sick sinus syndrome: Sinus bradycardial, sinus exit block, and sinus arrest In the patients with SSS, these changes are much more prominent. Even in normal elderly hearts, nodal cells decrease in number and fibrosis and fatty infiltration increase in the SA node. The intrinsic causes include degenerative fibrosis of SA node, ion channel dysfunction, remodeling of the SA node, atherosclerosis of the SA node artery, and infiltrative systemic diseases, such as hemochromatosis, sarcoidosis, and amyloidosis. There are intrinsic and extrinsic causes of SSS. ![]() The age at the time of implantation is increasing for all types of pacemakers. In one study, the mean age of dual-chamber device implantation, the most common pacemaker for SSS, was 75.4 years old. From 1993 to 2009, 2.9 million patients received a permanent pacemaker. Although not all the SSS patients need treatment, SSS accounts for about half of patients that need a pacemaker. SSS is a major cause of pacemaker implantation. SSS is a dysfunction of the pacemakers in the heart, that manifests as sinus bradycardia and sinus pause/arrest. Fishbein, in Cardiovascular Pathology (Fifth Edition), 2022 Sick sinus syndrome Further delays in the AV nodal firing leads to abnormal rhythms such as ventricular tachycardia, ventricular cardiomyopathy and ventricular fibrillations.Ītsuko Seki, Michael C. SA nodal cells with delayed firing, and contraction of the atria between the phases of the action potential causes abnormal rhythms, such as atrial flutter and atrial fibrillation. Physiologic changes contributing to tachycardia and bradycardia: conduction blocks of rapid impulses (tachy), blocks in the AV node (decremental-dependent block) re-pacing tachycardia (entrainment) An example is recognized in long QT syndrome Ectopic rhythms causing abnormal automaticity which are noticed in the resting and action potentials: delayed after-depolarizations, early after-depolarizations and parasystole. Mechanisms: similar to arrhythmia/atrial fibrillation Prevention methods using integrative Chinese medicine may help delay or avoid a chronic conditionĮlderly patients may be exhibiting signs of fibrosis, inflammation and alternating tachy and bradyrhythms Symptoms of arrhythmia especially if the patient has a history of hypertension around 140/90. Pre-hypertensive patients should caution themselves with prevention measures Family history and genetic profiling may help with avoiding certain risk factors which may activate symptoms later in life. Congenital atrial fibrillation may be a concern in those patients. Atrial fibrosis is a complication in atrial fibrillation which may cause sick sinus syndrome.Įxtremely rare incidence in childhood and young adult. ![]() ![]() It is associated with several types of bradycardia, tachycardias and atrial fibrillation. Though it is considered rare, incidence is usually found among the elderly. Sick sinus syndrome is a disorder of the conduction system and characterized by alternating periods of tachycardia and bradycardia. Sick sinus syndrome is differentiated into qi deficiency and blood stasis, deficiency of heart and spleen, heart yang deficiency, fire excess from yin deficiency and deficiency of yin and yang. The mood and personality can decline into anxiety. As the conduction system declines, the heart becomes weaker, over all energy diminishes. In Chinese medicine, sick sinus syndrome is classified under palpitations, and is considered a health state with symptoms of nearly depleted innate essence. Anika Niambi Al-Shura BSc., MSOM, Ph.D, in Integrative Cardiovascular Chinese Medicine, 2014 Pathogenesis Chinese Medicine
0 Comments
Leave a Reply. |