A patient with a legally binding document that refuses any form of artificial airway support is in a state of declining respiratory function. Despite the administration of oxygen via a mask and maintaining the patient in an upright position, their oxygen saturation continues to drop, and the team is faced with a decision on further interventions. What is the most appropriate action for the healthcare team to take in alignment with the advance directives?
Proceed with the establishment of an artificial airway, assuming the document does not apply in life-threatening scenarios.
Respect the advance directives stipulating no artificial airway support and continue with palliative care measures.
Temporarily provide artificial airway support while seeking consent from next of kin for further directives.
Seek an expedited ethical review to potentially override the documented instructions due to the urgent nature of the situation.