Final answer:
The statement regarding PEA (Pulseless Electrical Activity) where contractile function is present but too weak to produce a pulse or effective cardiac output is true. PEA indicates a problem with the heart's ability to pump blood despite normal electrical activity.
Step-by-step explanation:
The statement "In PEA, contractile function is present but it is too weak to produce a pulse or effective cardiac output" is true. PEA, or Pulseless Electrical Activity, is a medical condition where the heart's electrical rhythm may appear normal, but the heart muscle is not responding effectively enough to produce a blood pressure or pulse. This means that, while the electrical activity of the heart suggests a pumping action, the contractile function of the heart muscle is inadequate to create an effective cardiac output, hence the term 'Pulseless.' This can be due to a variety of underlying causes, such as hypovolemia, hypoxia, acidosis, or cardiac tamponade, among others. Clinical interventions often focus on identifying and addressing the underlying cause to restore effective heart pump function.