What is the preferred epidural technique in emergency settings during resuscitation of a pregnant patient?

The preferred epidural technique in emergency settings during the resuscitation of a pregnant patient is continuous infusion. This method allows for consistent and controlled administration of analgesia, which is crucial for managing pain and providing comfort during an emergency situation such as labor or a complicated delivery.

Continuous infusion provides a steady level of medication, which can lead to better pain control without the peaks and troughs associated with bolus dosing. This is particularly important in emergency settings where maintaining stable hemodynamics and ensuring that the patient remains responsive and comfortable is vital.

In contrast, a single bolus may provide immediate pain relief but does not offer the prolonged pain control needed during an evolving clinical situation. Patient-controlled analgesia, while a useful method in some contexts, may not be preferred in emergencies where the patient's condition or response could change rapidly. Finally, the option of "none required" does not address the need for effective pain management in such scenarios. Thus, continuous infusion is ideal for ongoing and stable analgesic effect, making it the preferred technique in the described setting.