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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 ...
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.
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 ...
t. e. Benzodiazepine withdrawal syndrome ( BZD withdrawal) is the cluster of signs and symptoms that may emerge when a person who has been taking benzodiazepines as prescribed develops a physical dependence on them and then reduces the dose or stops taking them without a safe taper schedule .
Sinus bradycardia is a common condition found in both healthy individuals and those who are considered well-conditioned athletes. [ 5] Heart rates considered bradycardic vary by species; for example, in the house cat, a rate of under 120 beats per minute is abnormal. Generally, smaller species have higher and larger species lower rates.
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]
Cardiogenic shock is caused by the failure of the heart to pump effectively. It is due to damage to the heart muscle, most often from a heart attack or myocardial contusion.[6] Other causes include abnormal heart rhythms, cardiomyopathy, heart valveproblems, ventricular outflow obstruction (i.e. systolic anterior motion in hypertrophic ...
Transvenous cardiac pacing ( TVP ), [ 1] also called endocardial pacing, is a potentially life-saving intervention used primarily to correct profound bradycardia. It can be used to treat symptomatic bradycardias that do not respond to transcutaneous pacing or to drug therapy. Transvenous pacing is achieved by threading a pacing electrode ...