Cardiac arrest has precursors in some cases. Some patients may experience chest pain, shortness of breath, fatigue, palpitations, severe chest pain, sudden palpitations, acute dyspnea, and dizziness. However, there are also some patients who have no prior signs.
Cardiac arrest is divided into four phases: prodromal phase, terminal event phase, cardiac arrest, and biological death.
The prodromal and terminal event phases occur before cardiac arrest and may be characterized by clinical signs. The prodromal phase refers to the period of days or months before cardiac arrest, when some patients may experience chest pain, shortness of breath, fatigue, and palpitations.
The terminal event period occurs in the period between the rapid changes in the cardiovascular system and cardiac arrest, which can be as short as a moment or as long as an hour, and can present different clinical manifestations, typically severe chest pain, sudden palpitations, acute dyspnea, dizziness, etc. However, some patients may not have prior cardiac arrest. However, some patients may not have any signs beforehand.
If you experience any of the above symptoms, you should consult a hospital in time to avoid delaying your condition.