Final answer:
During PPV, at least 20 seconds of PPV that moves the chest should be administered before proceeding to chest compressions or medications.
Step-by-step explanation:
When performing PPV (positive pressure ventilation), you need to ensure that the newborn (NB) receives at least 20 seconds of PPV that moves the chest before proceeding to chest compressions or medications. This is preferably done through an ET (endotracheal) or laryngeal mask, which helps provide an adequate airway for ventilation.