A client with bipolar disorder is in a manic episode and has been awake for 3 days. Which nursing intervention is the HIGHEST priority?

MANIA NURSING PRIORITIES: Safety is always first — mania creates serious risks: PHYSICAL: Exhaustion (3 days of sleep deprivation can cause hallucinations and medical complications); dehydration and poor nutrition (too agitated to eat/drink); cardiovascular strain from sustained hyperactivity; BEHAVIORAL: Impulsive decisions (financial, sexual, dangerous); disinhibited and possibly aggressive behavior; inability to assess danger; PRIORITY INTERVENTIONS: SAFETY ENVIRONMENT: Low-stimulation room; remove dangerous objects; monitor for escalating agitation; PHYSIOLOGICAL SUPPORT: Ensure hydration (offer finger foods/liquids frequently — won't sit for meals); monitor vital signs; MEDICATION: Mood stabilisers (lithium, valproate) take time to work; atypical antipsychotics (quetiapine, olanzapine) provide faster sedation; benzodiazepines for acute agitation; SLEEP: Priority — even 4-6 hours significantly improves functioning; COMMUNICATION: Calm, non-confrontational, brief interactions; avoid arguments; redirect rather than challenge.