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Turgeon RD, Fernandes KA, Juurlink D, Tu JV, Mamdani M. Ticagrelor and bradycardia: a nested case-control study. Pharmacoepidemiol Drug Saf 2015; 24:1281-5. [DOI: 10.1002/pds.3884] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Revised: 09/08/2015] [Accepted: 09/10/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Ricky D. Turgeon
- Department of Pharmacy; Vancouver General Hospital; Vancouver BC Canada
| | | | - David Juurlink
- Institute for Clinical Evaluative Sciences; Toronto ON Canada
- Division of Clinical Pharmacology; Sunnybrook Health Sciences Centre; Toronto ON Canada
| | - Jack V. Tu
- Institute for Clinical Evaluative Sciences; Toronto ON Canada
- Division of Cardiology; Schulich Heart Centre Sunnybrook Health Sciences Centre; Toronto ON Canada
| | - Muhammad Mamdani
- Institute for Clinical Evaluative Sciences; Toronto ON Canada
- Applied Health Research Centre; Li Ka Shing Knowledge Institute, St. Michael's Hospital; Toronto ON Canada
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Mancano MA. Risk Factors for Androgen Deficiency with Daily Opioid Use; Co-trimoxazole and Sudden Cardiac Death in Patients Receiving ACE Inhibitors; Clindamycin-Induced Myelosuppression; Apixaban-Induced Diffuse Alveolar Hemorrhage; DRESS Syndrome Induced by Allopurinol. Hosp Pharm 2015; 50:189-93. [PMID: 26405306 DOI: 10.1310/hpj5003-189] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The purpose of this feature is to heighten awareness of specific adverse drug reactions (ADRs), discuss methods of prevention, and promote reporting of ADRs to the US Food and Drug Administration's (FDA's) MedWatch program (800-FDA-1088). If you have reported an interesting, preventable ADR to MedWatch, please consider sharing the account with our readers. Write to Dr. Mancano at ISMP, 200 Lakeside Drive, Suite 200, Horsham, PA 19044 (phone: 215-707-4936; e-mail: mmancano@temple.edu). Your report will be published anonymously unless otherwise requested. This feature is provided by the Institute for Safe Medication Practices (ISMP) in cooperation with the FDA's MedWatch program and Temple University School of Pharmacy. ISMP is an FDA MedWatch partner.
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Affiliation(s)
- Michael A Mancano
- Chair and Clinical Professor, Department of Pharmacy Practice, Temple University School of Pharmacy , Philadelphia, Pennsylvania ; Clinical Advisor, Institute for Safe Medication Practices , Horsham, Pennsylvania
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Antoniou T, Hollands S, Macdonald EM, Gomes T, Mamdani MM, Juurlink DN. Trimethoprim-sulfamethoxazole and risk of sudden death among patients taking spironolactone. CMAJ 2015; 187:E138-E143. [PMID: 25646289 DOI: 10.1503/cmaj.140816] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
BACKGROUND Trimethoprim-sulfamethoxazole increases the risk of hyperkalemia when used with spironolactone. We examined whether this drug combination is associated with an increased risk of sudden death, a consequence of severe hyperkalemia. METHODS We conducted a population-based nested case-control study involving Ontario residents aged 66 years or older who received spironolactone between Apr. 1, 1994, and Dec. 31, 2011. Within this group, we identified cases as patients who died of sudden death within 14 days after receiving a prescription for trimethoprim-sulfamethoxazole or one of the other study antibiotics (amoxicillin, ciprofloxacin, norfloxacin or nitrofurantoin). For each case, we identified up to 4 controls matched by age and sex. We determined the odds ratio (OR) for the association between sudden death and exposure to each antibiotic relative to amoxicillin, adjusted for predictors of sudden death using a disease risk index. RESULTS Of the 11,968 patients who died of sudden death while receiving spironolactone, we identified 328 whose death occurred within 14 days after antibiotic exposure. Compared with amoxicillin, trimethoprim-sulfamethoxazole was associated with a more than twofold increase in the risk of sudden death (adjusted OR 2.46, 95% confidence interval [CI] 1.55-3.90). Ciprofloxacin (adjusted OR 1.55, 95% CI 1.02-2.38) and nitrofurantoin (adjusted OR 1.70, 95% CI 1.03-2.79) were also associated with an increased risk of sudden death, although the risk with nitrofurantoin was not apparent in a sensitivity analysis. INTERPRETATION The antibiotic trimethoprim-sulfamethoxazole was associated with an increased risk of sudden death among older patients taking spironolactone. When clinically appropriate, alternative antibiotics should be considered in these patients.
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Affiliation(s)
- Tony Antoniou
- Department of Family and Community Medicine (Antoniou), Li Ka Shing Knowledge Institute (Antoniou, Gomes, Mamdani), St. Michael's Hospital; University of Toronto (Gomes, Mamdani, Juurlink); Institute for Clinical Evaluative Sciences (Antoniou, Hollands, Macdonald, Gomes, Mamdani, Juurlink); Sunnybrook Research Institute (Juurlink), Toronto, Ont.
| | - Simon Hollands
- Department of Family and Community Medicine (Antoniou), Li Ka Shing Knowledge Institute (Antoniou, Gomes, Mamdani), St. Michael's Hospital; University of Toronto (Gomes, Mamdani, Juurlink); Institute for Clinical Evaluative Sciences (Antoniou, Hollands, Macdonald, Gomes, Mamdani, Juurlink); Sunnybrook Research Institute (Juurlink), Toronto, Ont
| | - Erin M Macdonald
- Department of Family and Community Medicine (Antoniou), Li Ka Shing Knowledge Institute (Antoniou, Gomes, Mamdani), St. Michael's Hospital; University of Toronto (Gomes, Mamdani, Juurlink); Institute for Clinical Evaluative Sciences (Antoniou, Hollands, Macdonald, Gomes, Mamdani, Juurlink); Sunnybrook Research Institute (Juurlink), Toronto, Ont
| | - Tara Gomes
- Department of Family and Community Medicine (Antoniou), Li Ka Shing Knowledge Institute (Antoniou, Gomes, Mamdani), St. Michael's Hospital; University of Toronto (Gomes, Mamdani, Juurlink); Institute for Clinical Evaluative Sciences (Antoniou, Hollands, Macdonald, Gomes, Mamdani, Juurlink); Sunnybrook Research Institute (Juurlink), Toronto, Ont
| | - Muhammad M Mamdani
- Department of Family and Community Medicine (Antoniou), Li Ka Shing Knowledge Institute (Antoniou, Gomes, Mamdani), St. Michael's Hospital; University of Toronto (Gomes, Mamdani, Juurlink); Institute for Clinical Evaluative Sciences (Antoniou, Hollands, Macdonald, Gomes, Mamdani, Juurlink); Sunnybrook Research Institute (Juurlink), Toronto, Ont
| | - David N Juurlink
- Department of Family and Community Medicine (Antoniou), Li Ka Shing Knowledge Institute (Antoniou, Gomes, Mamdani), St. Michael's Hospital; University of Toronto (Gomes, Mamdani, Juurlink); Institute for Clinical Evaluative Sciences (Antoniou, Hollands, Macdonald, Gomes, Mamdani, Juurlink); Sunnybrook Research Institute (Juurlink), Toronto, Ont
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