Title |
Acute Kidney Injury from Excessive Potentiation of Calcium-channel Blocker via Synergistic CYP3A4 Inhibition by Clarithromycin Plus Voriconazole
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Published in |
Internal Medicine, July 2017
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DOI | 10.2169/internalmedicine.56.8313 |
Pubmed ID | |
Authors |
Eikan Mishima, Kazuichi Maruyama, Toru Nakazawa, Takaaki Abe, Sadayoshi Ito |
Abstract |
CYP3A4-inhibitors can potentiate the hypotensive effect of calcium-channel blockers. However, insufficient attention to such drug interactions may result in serious adverse reactions. A 71-year-old hypertensive man prescribed nifedipine was hospitalized for infectious endophthalmitis. Antimicrobial therapy with voriconazole lowered the blood pressure, and then clarithromycin further lowered it through the excessively elevated nifedipine concentration, leading to ischemic acute kidney injury. After the discontinuation of clarithromycin and voriconazole, the blood pressure and renal function were recovered. The combination of CYP3A4-inhibitors such as clarithromycin plus voriconazole can synergistically potentiate calcium-channel blockers. Co-prescription of multiple CYP3A4-inhibitors with calcium-channel blockers increases the risk of hypotension and acute kidney injury. |
X Demographics
Geographical breakdown
Country | Count | As % |
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Spain | 6 | 40% |
Japan | 1 | 7% |
Venezuela, Bolivarian Republic of | 1 | 7% |
Unknown | 7 | 47% |
Demographic breakdown
Type | Count | As % |
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Members of the public | 9 | 60% |
Practitioners (doctors, other healthcare professionals) | 6 | 40% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 28 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
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Other | 3 | 11% |
Researcher | 2 | 7% |
Librarian | 1 | 4% |
Student > Doctoral Student | 1 | 4% |
Student > Ph. D. Student | 1 | 4% |
Other | 3 | 11% |
Unknown | 17 | 61% |
Readers by discipline | Count | As % |
---|---|---|
Medicine and Dentistry | 6 | 21% |
Pharmacology, Toxicology and Pharmaceutical Science | 2 | 7% |
Biochemistry, Genetics and Molecular Biology | 1 | 4% |
Psychology | 1 | 4% |
Nursing and Health Professions | 1 | 4% |
Other | 0 | 0% |
Unknown | 17 | 61% |