Final answer:
Elevated or suppressed body temperature is not one of the cardinal signs of cardiac arrest. The primary signs include loss of responsiveness, no normal breathing, and absence of a normal pulse.
Step-by-step explanation:
The cardinal signs of cardiac arrest do not include elevated or suppressed body temperature as a primary sign. Cardiac arrest is a life-threatening emergency that occurs when the heart no longer pumps blood effectively. The key signs of cardiac arrest typically include sudden loss of responsiveness, absence of normal breathing, and no normal pulse. Although Body temperature can affect heart function, as slight hyperthermia can increase heart rate and contraction strength, while hypothermia can slow them down, it is not a direct sign of cardiac arrest itself. Immediate medical intervention is crucial for someone experiencing cardiac arrest.
In acute myocardial infarction (MI), patients may experience symptoms like retrosternal pain (angina pectoris), difficulty breathing (dyspnea), irregular heartbeat (palpitations), nausea and vomiting, sweating (diaphoresis), anxiety, and fainting (syncope). However, during cardiac arrest, the heart's electrical activity is abnormal or absent, resulting in no effective heartbeat, which differs from the symptoms of MI.