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Spells of pain usually last less than a few minutes. Typically it begins at rest and other symptoms are absent. Concerns about the condition may result in anxiety. [1] The underlying cause is unclear. Some believe the pain may be from the chest wall or irritation of an intercostal nerve. [1] [2] Risk factors include psychological stress. [2]
Chest pain lasting only a few seconds is normally not angina (such as precordial catch syndrome). Myocardial ischemia comes about when the myocardium (the heart muscle) receives insufficient blood and oxygen to function normally either because of increased oxygen demand by the myocardium or because of decreased supply to the myocardium.
Ventricular tachycardia (V-tach or VT) is a cardiovascular disorder in which fast heart rate occurs in the ventricles of the heart. [3] Although a few seconds of VT may not result in permanent problems, longer periods are dangerous; and multiple episodes over a short period of time are referred to as an electrical storm.
Sinoatrial arrest is a medical condition wherein the sinoatrial node of the heart transiently ceases to generate the electrical impulses that normally stimulate the myocardial tissues to contract and thus the heart to beat. It is defined as lasting from 2.0 seconds to several minutes. [1]
[4] A normal resting heart rate is 60 to 100 beats per minute. A resting heart rate of more than 100 beats per minute is defined as a tachycardia. During an episode of SVT, the heart beats about 150 to 220 times per minute. [9] Specific treatment depends on the type of SVT [5] and can include medications, medical procedures, or surgery. [5]
There are many chest pain causes (including a heart attack) that can lead to similar types of discomfort, and it can be really tricky to know what you're actually dealing with. 11 causes of chest ...
The symptoms can last longer than those in stable angina, can be resistant to rest or medicine, and can get worse over time. [ 7 ] [ 8 ] The cardinal symptom of critically decreased blood flow to the heart is chest pain , experienced as tightness, pressure, or burning. [ 5 ]
Considering that the total cardiac cycle has a duration of one second (for a base heart rate of 60 beats per minute), the probability of impact trauma within the window of vulnerability is 1–3 percent only. [1] The cellular mechanisms of commotio cordis are not fully understood. However, it is widely recognized that it may be related to the ...