Methadone in case of opioid treatment is used during which phase?

AIIMS M.Sc. Nsg Entrance exam-2026

Pharmacology

Easy

Appeared in: AIIMS M.Sc. Nsg Entrance exam-2026

Explanation

Methadone is a long-acting opioid agonist used as a cornerstone of Medication-Assisted Treatment (MAT) for opioid use disorder.
Its primary role is in maintenance therapy, which involves long-term administration (often lifelong) to stabilize patients, reduce cravings, and prevent relapse to illicit opioid use.
The long half-life (24-36 hours) allows for once-daily dosing, which helps maintain a steady state, preventing the cycle of intoxication and withdrawal.
Studies show that enrollment in a methadone maintenance program significantly reduces mortality, illicit drug use, criminal activity, and the transmission of infectious diseases like HIV and hepatitis.

Option B: While methadone is used for medically supervised withdrawal (detoxification), this is typically a short-term, tapering process. Its most significant and defining role in opioid treatment is long-term maintenance.
Option C: Overdose is a medical emergency caused by excessive opioid intake, not a phase of treatment. Methadone, being an opioid itself, would worsen an overdose.
Option D: Toxicity refers to the harmful or poisonous effects of a substance. It is a potential adverse outcome of methadone use (especially in overdose), not a therapeutic phase.

Visual 1: Flowchart: Depicting the phases of Medication-Assisted Treatment (MAT), showing the paths for detoxification and long-term maintenance.
Visual 2: Comparison Table: A visual table comparing Methadone, Buprenorphine, and Naltrexone across key features like mechanism of action, administration setting, and overdose risk.

Clinical Relevance

Nursing practice connection: Knowing Pharmacotherapy for Opioid Use Disorder helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Nurses in Methadone Maintenance Treatment Programs (MMTPs) are responsible for dispensing medication, monitoring for side effects, assessing for signs of withdrawal or intoxication, and providing patient education.
Patient safety is paramount. Nurses must be vigilant for signs of over-sedation or respiratory depression, especially during the initial dose-titration phase.
What if? If a patient on methadone maintenance presents with slurred speech, pinpoint pupils, and severe drowsiness, the nurse must immediately assess for respiratory depression and prepare for emergency intervention, including the potential administration of naloxone and notifying the provider. This could indicate concurrent use of other CNS depressants or an incorrect dose.

How to Approach the Question

First, identify the core of the question: it asks for the specific treatment phase associated with the drug 'methadone'.
Recall or look up the primary function of methadone in the context of opioid addiction. It is known as a replacement or substitution therapy.
Evaluate the options: 'Maintenance therapy' refers to long-term, stable treatment. 'Withdrawal therapy' refers to short-term detoxification.
Recognize that while methadone can be used for withdrawal, its hallmark use is for long-term maintenance to prevent relapse. This makes 'Maintenance therapy' the most accurate and primary role.
Eliminate 'Overdose' and 'Toxicity' as they are adverse events or conditions, not planned therapeutic phases.

Concept Tested & Keywords

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