In a patient with acute psychosis who refuses blood glucose monitoring, is it permissible to withhold meals until she cooperates with medication and nursing assessment?

No, withholding meals to coerce cooperation is ethically and legally prohibited—this constitutes forced treatment and violates patient autonomy.

Ethical and Legal Framework

Providing nutrition against the will of a patient who is able to give consent or make judgments (enforced feeding) is generally prohibited 1. Even more critically, the inverse—withholding nutrition to coerce compliance—represents a form of coercion that violates fundamental ethical principles of patient autonomy and bodily integrity.

The ESPEN guidelines explicitly state that forced feeding contrary to an informed and voluntary refusal is unjustifiable 1. While this addresses forced feeding directly, the principle applies equally to using food deprivation as a behavioral control mechanism. Using basic needs like food as leverage to obtain compliance with medical interventions is ethically impermissible regardless of the patient's psychiatric state.

Critical Distinction: Capacity vs. Cooperation

The key issue here is whether the patient has decision-making capacity:

If the Patient Has Capacity (Even While Psychotic):

• The patient retains the right to refuse blood glucose monitoring and other assessments 1
• Competent patients may refuse medical interventions without consideration of whether healthcare providers believe it's in their best interest 1
• Withholding meals would constitute punishment and coercion, which is never ethically acceptable
• Food and basic nutrition are considered fundamental human needs, not privileges to be earned through compliance 1

If the Patient Lacks Capacity Due to Acute Psychosis:

• The clinical team must act in the patient's best interest
• Blood glucose monitoring becomes medically necessary given the metabolic monitoring requirements for antipsychotic treatment 2
• Care may need to be provided over objection when refusal results in significant physical harm 3
• However, this still does not justify withholding meals—rather, it justifies providing necessary medical care despite refusal

Recommended Clinical Approach

Instead of withholding meals, implement this structured strategy:

1. Assess decision-making capacity formally

   • Determine if psychosis is impairing her ability to understand the need for glucose monitoring
   • Document capacity assessment clearly

2. Address the underlying psychosis urgently

   • Initiate or optimize antipsychotic treatment per recent guidelines 2
   • Verbal de-escalation and psychosocial interventions should be primary approaches 4
   • Consider that hyperglycemia itself can worsen psychosis 5, creating a dangerous cycle

3. Provide care over objection when medically necessary

   • If the patient lacks capacity and glucose monitoring is essential (which it is for someone on antipsychotics or with diabetes), this can be performed despite refusal 3
   • Use the least restrictive means possible
   • Document medical necessity and attempts at less invasive approaches

4. Never withhold basic needs

   • Continue providing meals regardless of cooperation with assessments
   • Food is a basic human right, not a behavioral incentive 1

Critical Pitfalls to Avoid

• Do not conflate refusal of assessment with lack of capacity: A patient may have capacity to refuse even if you disagree with the decision
• Do not use nutrition as a behavioral tool: This crosses into coercion and potential abuse
• Do not delay treatment of psychosis: The longer psychosis persists, the more dangerous the situation becomes for both refusal behaviors and potential self-starvation 6
• Do not ignore the medical urgency: Starvation secondary to psychosis is an underappreciated but serious consequence that can lead to adverse outcomes 6

Special Considerations

Recent schizophrenia treatment guidelines emphasize the importance of metabolic monitoring, particularly glucose checks at baseline, 4 weeks, 3 months, and annually 2. In a patient with acute psychosis refusing glucose monitoring, the medical necessity of this monitoring—especially if she's receiving or about to receive antipsychotics—may justify performing it despite refusal if she lacks capacity.

However, this medical necessity framework applies to the glucose check itself, not to withholding nutrition. The two must be completely separated in your clinical approach.

If the patient has capacity and continues to refuse, you must respect that refusal while continuing to offer meals and attempting to build therapeutic rapport to eventually gain cooperation through trust rather than coercion 1, 4.