Answer:
In this complex medical scenario, the decision to perform surgery without the patient's consent revolves around the legal theory of implied or presumed consent, typically applicable in emergency situations where an unconscious patient faces a life-threatening condition. However, the added complexity of the patient's pregnancy introduces additional ethical and legal considerations. The medical team must carefully balance the urgency of life-saving intervention with potential risks to both the patient and the unborn child. To navigate this situation, consultation with legal and ethical experts is crucial, as well as making earnest efforts to locate the patient's family or next of kin to obtain informed consent or make decisions that prioritize the well-being of both the patient and the unborn child. The decision should ultimately align with established legal and ethical principles and medical guidelines.