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The symptoms might also come and go before you actually have a full-on heart attack. ... In a panic attack, your body may go into fight or flight mode in response to stress, which speeds up your ...
These signals are generated rhythmically, which results in the coordinated rhythmic contraction and relaxation of the heart. On the microscopic level, the wave of depolarization propagates to adjacent cells via gap junctions located on the intercalated disc. The heart is a functional syncytium as opposed to a skeletal muscle syncytium. In a ...
A myocardial infarction (MI), commonly known as a heart attack, occurs when blood flow decreases or stops in one of the coronary arteries of the heart, causing infarction (tissue death) to the heart muscle. [1] The most common symptom is retrosternal chest pain or discomfort that classically radiates to the left shoulder, arm, or jaw. [1]
In 2021, the American Heart Association clarified that "heart attack" is often mistakenly used to describe cardiac arrest. While a heart attack refers to death of heart muscle tissue as a result of blood supply loss, cardiac arrest is caused when the heart's electrical system malfunctions. Furthermore, the American Heart Association explains ...
In a healthy heart all activities and rests during each individual cardiac cycle, or heartbeat, are initiated and orchestrated by signals of the heart's electrical conduction system, which is the "wiring" of the heart that carries electrical impulses throughout the body of cardiomyocytes, the specialized muscle cells of the heart. [1] [2] These ...
Cough CPR is the subject of a hoax email that began circulating in 1999. [citation needed] It is described as a "resuscitation technique" in which through prolonged coughing and deep breathing every 2 seconds, a person suffering a cardiac dysrhythmia immediately before cardiac arrest can keep conscious until help arrives (or until the person can get to the nearest hospital).
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Texidor's twinge [1] One of the areas more commonly affected in precordial catch syndrome [1] Specialty: Pediatrics, family medicine: Symptoms: Sharp, stabbing chest pain in a small area [1] Usual onset: Sudden [1] Duration: 30 seconds to 3 minutes [1] Causes: Unclear [1] Differential diagnosis: Angina, pericarditis, pleurisy, chest trauma [1 ...