phase IV clinical trial
- noun
- /feɪz fɔr ˈklɪnɪkəl traɪəl/
- Specialized
:
ensayo clínico de fase IV
- Regulators required a phase IV clinical trial to examine the medication's safety in elderly populations.
Examples
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Participation in a phase IV clinical trial offers valuable data about real-world drug effectiveness.
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After the drug's approval, a phase IV clinical trial was launched to monitor long-term side effects.
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The phase IV clinical trial for the new vaccine started last month.
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Many patients participated in the phase IV clinical trials across the country.
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After the drug's approval, a phase IV clinical trial was launched to monitor long-term side effects.
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Regulators required a phase IV clinical trial to examine the medication's safety in elderly populations.
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Participation in a phase IV clinical trial offers valuable data about real-world drug effectiveness.
Synonyms
A stage after approval that monitors a drug's long-term effects in many patients
How Advanced
- Specialized
- Specialized
1
5.0
- Specialized
- Specialized
1
4.3
- Specialized
Surface Forms
Morphology
The meaning is directly compositional: 'phase' = stage, 'IV' = four, 'clinical' = medical/patient-related, and 'trial' = a testing study, so a learner can infer it denotes the fourth stage of clinical testing. Most languages and scientific contexts use numbered phases for trials, so a B1 learner who knows the constituent words would reasonably understand the basic sense without prior exposure.
Etymology
Phase IV clinical trial comes from the step-by-step plan used to test medicines. Phase IV is the fourth step and clinical trial means a test with people. Because it is the step that comes 'after approval', this phase watches how the drug works and any side effects in 'everyday use', so the phrase means monitoring an approved medicine's safety and effectiveness.