A nurse is preparing to obtain a postprandial blood glucose level from a client who has diabetes mellitus. Which of the following actions should the nurse take?

A. Perform immediate defibrillation: This is necessary for ventricular tachycardia with a pulse if it is unstable, but first, assess the client’s condition.
B. Provide pulmonary ventilation: This may be required depending on the client's breathing status but is secondary to assessing the pulse.
C. Determine palpable pulse: This is the priority action. Determining whether the client has a pulse helps guide the next steps—if the client has a pulse but is symptomatic, treatment will differ from if the client is pulseless.
D. Begin chest compressions: This is done if the client is pulseless. If there is a pulse, other interventions are needed first.

Rationale
• Assist the client to the bathroom.
• Non-essential: The client’s current condition indicates severe changes, including a significant drop in consciousness and worsening vital signs. Immediate priorities involve stabilization and monitoring rather than assisting with bathroom needs.
• Initiate seizure precautions.
• Anticipated: The client’s deteriorating condition, including restlessness, agitation, and decreased level of consciousness, increases the risk of seizures. Initiating seizure precautions is appropriate to ensure safety.
• Record GCS every 15 min for the first 4 hr.
• Anticipated: The Glasgow Coma Scale (GCS) score of 9 indicates a significant decrease in consciousness. Frequent monitoring of GCS is crucial to assess changes in neurological status and to guide further intervention.
• Elevate the head of the bed.
• Anticipated: Elevating the head of the bed can help with cerebral perfusion and decrease intracranial pressure. This is a common intervention for clients with neurological issues to improve comfort and safety.
• Keep the client's head in midline position.
• Anticipated: Maintaining a midline position helps ensure optimal cerebral perfusion and reduces the risk of complications. It is particularly important in clients with neurological changes.
• Encourage the client to cough.
• Non-essential: Given the client's current level of consciousness and agitation, encouraging coughing might not be appropriate and could cause further distress or complications.
• Decrease oxygen to 1.5L/min via nasal cannula.
• Contraindicated: The client’s oxygen saturation has dropped to 90% despite receiving 6 L/min of oxygen. Decreasing the oxygen flow could further impair oxygenation. The priority is to maintain or increase oxygen levels to ensure adequate oxygenation.