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Bradycardia arrhythmia may have many causes, both cardiac and non-cardiac. Non-cardiac causes are usually secondary and can involve recreational drug use or abuse , metabolic or endocrine issues, especially hypothyroidism , an electrolyte imbalance , neurological factors, autonomic reflexes , situational factors, such as prolonged bed rest ...
Often sinus node dysfunction produces no symptoms, especially early in the disease course. Signs and symptoms usually appear in more advanced disease and more than 50% of patients will present with syncope or transient near-fainting spells as well as bradycardias that are accompanied by rapid heart rhythms, referred to as tachycardia-bradycardia syndrome [4] [5] Other presenting signs or ...
Rhythm strip of sinus bradycardia at 50 bpm. Sinus bradycardia is commonly seen in normal healthy persons and athletes in the absence of pathophysiological diseases or conditions. [1] Different factors or etiologies could lead to the dysfunction of the sinus node, causing a malformation or prolongation of the impulse.
OhioHealth Riverside Methodist Hospital is the largest member hospital of OhioHealth, a not-for-profit, faith-based healthcare system located in Columbus, Ohio.. As a regional tertiary care hospital, Riverside Methodist is host to a number of specialty centers and services, including Neuroscience and Stroke, Heart and Vascular, Maternity and Women's Health, Cancer Care, Trauma Center II, Hand ...
Neurogenic shock is a distributive type of shock resulting in hypotension (low blood pressure), often with bradycardia (slowed heart rate), caused by disruption of autonomic nervous system pathways. [1] It can occur after damage to the central nervous system, such as spinal cord injury and traumatic brain injury.
Many conditions can cause third-degree heart block, but the most common cause is coronary ischemia. Progressive degeneration of the electrical conduction system of the heart can lead to third-degree heart block. This may be preceded by first-degree AV block, second-degree AV block, bundle branch block, or bifascicular block. In addition, acute ...
Wandering atrial pacemaker may be seen in young, healthy individuals as well as in the elderly and those with lung disease. [2] The cause of wandering atrial pacemaker is unclear. Increased tone from the vagus nerve may factor into the rhythm appearing in young, healthy individuals who exercise. The vagus nerve is a part of the parasympathetic ...
The most common cause of a low (narrow) pulse pressure is a drop in left ventricular stroke volume. In trauma, a low or narrow pulse pressure suggests significant blood loss. [8] A narrow pulse pressure is also caused by aortic stenosis. [3] This is due to the decreased stroke volume in aortic stenosis. [9]
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