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Most SVTs are unpleasant rather than life-threatening, although very fast heart rates can be problematic for those with underlying ischemic heart disease, or the elderly. Episodes can be treated when they occur by Valsalva maneuver , adenosine injection or taking a AV node blocking agent as pill-in-pocket, but regular medication may also be ...
The cause is not known. [3] Risk factors include alcohol, psychostimulants such as caffeine, nicotine, and amphetamines, psychological stress, and Wolff-Parkinson-White syndrome, which often is inherited. [3] The underlying mechanism typically involves an accessory pathway that results in re-entry. [3]
Mental stress-induced myocardial ischemia (MSIMI) is a medical condition in which acute psychological stress can trigger a transient myocardial ischemia, which is a state of reduced blood flow to the heart muscle, often without the presence of significant coronary artery disease (CAD).
ST segment depression and T-wave changes may be seen in patients with unstable angina; Depressed but upsloping ST segment generally rules out ischemia as a cause. Also, it can be a normal variant or artifacts, such as: Pseudo-ST-depression, which is a wandering baseline due to poor skin contact of the electrode [3]
Central nervous system (CNS) depression is a physiological state that can result in a decreased rate of breathing, decreased heart rate, and loss of consciousness, possibly leading to coma or death. It is the result of inhibited or suppressed brain activity .
[9] [10] Chronic stress, and a lack of coping resources available, or used by an individual, can often lead to the development of psychological issues such as delusions, [11] depression and anxiety (see below for further information). [12] Chronic stress also causes brain atrophy, which is the loss of neurons and the connections between them ...
PARIS (Reuters) -Triathletes fresh from their second swim in the Seine generally shrugged off the risk of waste in the river making them sick, but highlighted the stress they were put through as ...
Stress ulceration is a single or multiple fundic mucosal ulcers that causes upper gastrointestinal bleeding, and develops during the severe physiologic stress of serious illness. It can also cause mucosal erosions and superficial hemorrhages in patients who are critically ill, or in those who are under extreme physiologic stress, causing blood ...