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The most common cause of cardiac syncope is cardiac arrhythmia (abnormal heart rhythm) wherein the heart beats too slowly, too rapidly, or too irregularly to pump enough blood to the brain. [9] Some arrhythmias can be life-threatening. [9] Two major groups of arrhythmias are bradycardia and tachycardia. Bradycardia can be caused by heart blocks.
A hypertensive emergency is very high blood pressure with potentially life-threatening symptoms and signs of acute damage to one or more ... vomiting, or syncope. ...
Reflex syncope can occur in otherwise healthy individuals, and has many possible causes, often trivial ones such as prolonged standing with the legs locked. [citation needed] The main danger of vasovagal syncope (or dizzy spells from vertigo) is the risk of injury by falling while unconscious.
Some of these conditions can be minor, while others can be life-threatening. Coronary Artery Disease. Coronary artery disease is the most common type of heart disease. It’s strongly linked to:
Autonomic dysreflexia (AD) is a life-threatening medical emergency characterized by hypertension and cardiac arrhythmias. [1] This condition is sometimes referred to as autonomic hyperreflexia. [2] Most cases of AD occur in individuals with spinal cord injuries. [3]
In patients treated with beta blockers, life-threatening arrhythmias are more likely if a person had already survived a cardiac arrest, had a syncope, or are carriers of disease-causing mutations affecting the highly conserved terminal portion of RYR2 gene, [25] called the C-terminal domain (amino acids 4889–4969). [30]
Worker hanging strapped into a safety harness during a fall rescue drill. Suspension trauma, also known as orthostatic shock while suspended, harness hang syndrome (HHS), suspension syndrome, or orthostatic intolerance, is an effect which occurs when the human body is held upright without any movement for a period of time.
There was a 13% increase in the number of attendances for people seeking help for backache, up from 324,443 in 2022/23 to 365,327 in 2023/24. Cases where headache was the chief complaint rose 12% ...