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Difficulty: MediumSchizophrenia and Psychotic Disorders

A 35-year-old man with a history of schizoaffective disorder is admitted to the inpatient psychiatric unit due to an acute exacerbation of psychotic symptoms. He is started on fluphenazine. Three days later, the nursing staff finds him confused and diaphoretic. Vital signs show a temperature of 39.5°C (103.1°F), blood pressure of 160/100 mmHg, and heart rate of 122/min. Physical examination reveals profound lead-pipe muscle rigidity. Laboratory studies demonstrate a markedly elevated serum creatine kinase (CK) level and leukocytosis. Arrange the following steps in the management of this patient's current condition in the most appropriate sequential order, from the initial, most critical action to treatments reserved for refractory cases.

  1. 1Immediately discontinue the offending antipsychotic medication
  2. 2Initiate intensive supportive care with intravenous fluids and active cooling
  3. 3Administer targeted pharmacotherapy such as bromocriptine or dantrolene
  4. 4Consider electroconvulsive therapy (ECT)

Answer

The correct sequential order for managing neuroleptic malignant syndrome (NMS) is: 1) Discontinue the antipsychotic, 2) Initiate supportive care, 3) Administer targeted pharmacotherapy, 4) Consider ECT.
The correct management of neuroleptic malignant syndrome requires a prompt, stepwise approach. The definitive first step is stopping the offending dopamine antagonist. Next, because NMS causes massive metabolic derangements and risks acute kidney injury from rhabdomyolysis, aggressive supportive care with IV fluids and cooling is instituted. For moderate to severe cases not responding quickly to supportive care, targeted medications like dopamine agonists (bromocriptine) or muscle relaxants (dantrolene) are used. Finally, in the most severe, treatment-resistant cases, electroconvulsive therapy (ECT) is highly effective and represents the final step of the protocol.

Step-by-Step Solution

1
Identify the patient's diagnosis based on the clinical presentation.
The patient has altered mental status, autonomic instability, lead-pipe rigidity, and elevated CK after starting fluphenazine, which strongly indicates neuroleptic malignant syndrome (NMS).
Recognizing NMS is a critical first step, as it is a life-threatening psychiatric emergency requiring an immediate, stepwise intervention.
2
Determine the initial and most critical step in management.
The first step is to immediately stop the offending agent (fluphenazine).
NMS is triggered by dopamine antagonism; continued exposure will worsen the condition and increase mortality.
3
Identify the next standard line of treatment after removing the trigger.
Initiate intensive supportive care (IV fluids, cooling).
Supportive care prevents the most common causes of mortality in NMS, such as acute kidney injury from rhabdomyolysis and complications from hyperthermia.
4
Determine the interventions for cases that do not resolve with initial measures.
Administer medications like bromocriptine or dantrolene, and if still refractory, proceed to ECT.
Targeted medications help reverse the dopamine blockade and muscle rigidity. ECT is highly effective but invasive, making it appropriate for refractory, severe cases.

Key Concept

Neuroleptic Malignant Syndrome (NMS) Management Sequence

Alternative Method

A helpful mnemonic for the clinical signs of NMS is 'FALTER': Fever, Autonomic instability, Leukocytosis, Tremor, Elevated CK, Rigidity (lead-pipe). The management strictly follows a progressive escalation based on symptom severity: Stop drug -> Support -> Medicate -> ECT.
Estimated Time:1m 0s
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Topics

Schizophrenia and Psychotic Disorders

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