In this task, you are given a question and answer options for that question. Using this information, you have to classify each text into different topics: medicine, nursery, psychology, chemistry, pharmacology, biology.

Question: Defibrillation is characterized by:
Options: <0> It requires the patient's previous sedation. <1> It is usually used when the patient is in asystole. <2> It can be applied in ventricular tachycardias with a pulse. <3> The discharge is not synchronized with the patient's heart rate. <4> A minimum intensity discharge should be used.
nursery