Final answer:
PEA can present as pulseless electrical activity, where the heart's electrical activity is present, but there is no palpable pulse.
Step-by-step explanation:
PEA can present as pulseless electrical activity. Pulseless electrical activity (PEA) is a condition where the heart's electrical activity is present, but there is no palpable pulse. PEA can be caused by various factors such as severe bleeding, heart attack, drug overdose, or electrolyte imbalances.
For example, if a patient is experiencing PEA due to severe bleeding, the heart may continue to have electrical activity, but the blood loss can prevent the heart from effectively pumping blood and generating a pulse.