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Bradycardia, also called bradyarrhythmia, is a resting heart rate under 60 beats per minute (BPM). [ 1] While bradycardia can result from various pathologic processes, it is commonly a physiologic response to cardiovascular conditioning or due to asymptomatic type 1 atrioventricular block. Resting heart rates of less than 50 BPM are often ...
Sinus node dysfunction ( SND ), also known as sick sinus syndrome ( SSS ), is a group of abnormal heart rhythms ( arrhythmias) usually caused by a malfunction of the sinus node, the heart's primary pacemaker. [1] [2] Tachycardia-bradycardia syndrome is a variant of sick sinus syndrome in which the arrhythmia alternates between fast and slow ...
Ictal bradycardia is when people with temporal lobe epilepsy experience bradycardia with their seizures (epileptic discharges). Bradycardia is defined by a slower than normal heart rate, less than 60 bpm. (Normal range is 60-100 bpm). Ictal epileptic discharges can effect changes in cardiac rhythm. An increase in heart rhythm is common during ...
Sinus bradycardia. ECG of Sinus bradycardia with a heart rate of 43 bpm. Sinus bradycardia is a sinus rhythm with a reduced rate of electrical discharge from the sinoatrial node, resulting in a bradycardia, a heart rate that is lower than the normal range (60–100 beats per minute for adult humans). [ 1][ 2]
1.16% in the general population. Inappropriate sinus tachycardia (IST) is defined as sinus tachycardia that is not caused by identifiable medical ailments, a physiological reaction, or pharmaceuticals (a diagnosis of exclusion) and is accompanied by symptoms, frequently invalidating and affecting quality of life. [ 2]
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.
Apnea of prematurity. Apnea of prematurity is a disorder in infants who are preterm that is defined as cessation of breathing by that lasts for more than 20 seconds and/or is accompanied by hypoxia or bradycardia. Apnea of prematurity is often linked to earlier prematurity (younger gestational age). Apnea is traditionally classified as either ...
Alcoholic cardiomyopathy (ACM) is a disease in which the long-term consumption of alcohol leads to heart failure. [ 1] ACM is a type of dilated cardiomyopathy. The heart is unable to pump blood efficiently, leading to heart failure. It can affect other parts of the body if the heart failure is severe. It is most common in males between the ages ...