Neutropenia associated with mezlocillin and piperacillin
Drug Intelligence & Clinical Pharmacy
|February 1, 1985
Summary
Neutropenia from beta-lactam antibiotics is known. This case shows cross-reactivity between mezlocillin and piperacillin, highlighting a rare but important adverse drug reaction for clinicians.
Area of Science:
- Pharmacology
- Hematology
- Clinical Medicine
Background:
- Neutropenia is a known adverse effect of beta-lactam antibiotics, first reported in 1946.
- Cross-reactivity between different beta-lactam antibiotics causing neutropenia is infrequently documented.
Observation:
- A patient developed neutropenia after receiving mezlocillin.
- Neutropenia resolved after discontinuing mezlocillin.
- Neutropenia recurred upon initiation of piperacillin and resolved after its discontinuation.
Findings:
- This case demonstrates a clear association between mezlocillin and piperacillin use and the development of neutropenia.
- The findings suggest potential cross-reactivity between these specific beta-lactam antibiotics regarding neutropenia induction.
Implications:
- Clinicians should be aware of the potential for neutropenia with newer beta-lactam antibiotics.
- Awareness of antibiotic cross-reactivity is crucial for managing adverse drug reactions like neutropenia.
- This case underscores the importance of vigilant monitoring for hematologic side effects during antibiotic therapy.
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