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Adomako EA, Maalouf NM. Type 4 renal tubular acidosis and uric acid nephrolithiasis: two faces of the same coin? Curr Opin Nephrol Hypertens 2023; 32:145-152. [PMID: 36683539 PMCID: PMC9881823 DOI: 10.1097/mnh.0000000000000859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
PURPOSE OF REVIEW The present review summarizes findings of recent studies examining the epidemiology, pathophysiology, and treatment of type 4 renal tubular acidosis (RTA) and uric acid nephrolithiasis, two conditions characterized by an abnormally acidic urine. RECENT FINDINGS Both type 4 RTA and uric acid nephrolithiasis disproportionately occur in patients with type 2 diabetes and/or chronic kidney disease. Biochemically, both conditions are associated with reduced renal ammonium excretion resulting in impaired urinary buffering and low urine pH. Reduced ammoniagenesis is postulated to result from hyperkalemia in type 4 RTA and from insulin resistance and fat accumulation in the renal proximal tubule in uric acid nephrolithiasis. The typical biochemical findings of hyperkalemia and systemic acidosis of type 4 RTA are rarely reported in uric acid stone formers. Additional clinical differences between the two conditions include findings of higher urinary uric acid excretion and consequent urinary uric acid supersaturation in uric acid stone formers but not in type 4 RTA. SUMMARY Type 4 RTA and uric acid nephrolithiasis share several epidemiological, clinical, and biochemical features. Although both conditions may be manifestations of diabetes mellitus and thus have a large at-risk population, the means to the shared biochemical finding of overly acidic urine are different. This difference in pathophysiology may explain the dissimilarity in the prevalence of kidney stone formation.
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Affiliation(s)
- Emmanuel A. Adomako
- Department of Internal Medicine, Division of Nephrology and Hypertension, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Naim M. Maalouf
- Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, and Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
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Muylle KM, Gentens K, Dupont AG, Cornu P. Evaluation of context-specific alerts for potassium-increasing drug-drug interactions: A pre-post study. Int J Med Inform 2019; 133:104013. [PMID: 31698230 DOI: 10.1016/j.ijmedinf.2019.104013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 10/04/2019] [Accepted: 10/14/2019] [Indexed: 10/25/2022]
Abstract
OBJECTIVE To investigate whether context-specific alerts for potassium-increasing drug-drug interactions (DDIs) in a clinical decision support system reduced the alert burden, increased alert acceptance, and had an effect on the occurrence of hyperkalemia. MATERIALS AND METHODS In the pre-intervention period all alerts for potassium-increasing DDIs were level 1 alerts advising absolute contraindication, while in the post-intervention period the same drug combinations could trigger a level 1 (absolute contraindication), a level 2 (monitor potassium values), or a level 3 alert (informative, not shown to physicians) based on the patient's recent laboratory value of potassium. Alert acceptance was defined as non-prescription or non-administration of the interacting drug combination for level 1 alerts and as monitoring of the potassium levels for level 2 alerts. RESULTS The alert burden decreased by 92.8%. The relative risk (RR) for alert acceptance based on prescription rates for level 1 alerts and monitoring rates for level 2 alerts was 15.048 (86.5% vs 5.7%; 95% CI 12.037-18.811; P < 0.001). With alert acceptance for level 1 alerts based on actual administration and for level 2 alerts on monitoring rates, the RR was 3.597 (87.6% vs 24.4%; 95% CI 3.192-4.053; P < 0.001). In the generalized linear mixed model the effect of the intervention on the occurrence of hyperkalemia was not significant (OR 1.091, 95% CI 0.172-6.919). CONCLUSION The proposed strategy seems effective to get a grip on the delicate balance between over- and under alerting.
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Affiliation(s)
- Katoo M Muylle
- Research Group Clinical Pharmacology & Clinical Pharmacy (KFAR), Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Laarbeeklaan 103, 1090, Brussels, Belgium.
| | - Kristof Gentens
- Department of Medical Informatics, UZ Brussel, Laarbeeklaan 101, 1090, Brussels, Belgium.
| | - Alain G Dupont
- Research Group Clinical Pharmacology & Clinical Pharmacy (KFAR), Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Laarbeeklaan 103, 1090, Brussels, Belgium.
| | - Pieter Cornu
- Research Group Clinical Pharmacology & Clinical Pharmacy (KFAR), Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Laarbeeklaan 103, 1090, Brussels, Belgium; Department of Medical Informatics, UZ Brussel, Laarbeeklaan 101, 1090, Brussels, Belgium.
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Somogyi-Végh A, Ludányi Z, Erdős Á, Botz L. Countrywide prevalence of critical drug interactions in Hungarian outpatients: a retrospective analysis of pharmacy dispensing data. BMC Pharmacol Toxicol 2019; 20:36. [PMID: 31151485 PMCID: PMC6544909 DOI: 10.1186/s40360-019-0311-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 05/09/2019] [Indexed: 12/31/2022] Open
Abstract
Background Drug-drug interactions (DDIs) present a significant source of adverse drug reactions. Despite being one of the commonly cited risks to patient safety, prevention of DDIs still poses a challenge to healthcare systems. The prevalence of DDIs can be used as a quality indicator for the safety of prescribing. With the analysis of drug utilization databases, real-world data on critical DDIs can be obtained. The aim of this study was to establish a list of critical DDIs and estimate their prevalence in the Hungarian outpatient population. Methods Since there is no conclusive and generally accepted repository of high-risk DDIs, a systematic search of the literature for consensus-based lists was performed. Based on these results and their analysis with 5 interaction compendia, we propose a simple methodology to identify critical combinations. Present study focused on DDIs which are (1) of high clinical importance thus being most likely to cause significant harm if not detected, (2) well-supported by available evidence and (3) affect drugs which are routinely dispensed in the community pharmacy setting. A retrospective analysis of prescriptions filled between 2013 and 2016 was performed. The source of drug utilization data was the IQVIA’s national prescription fill database. The number of interacting drug pairs dispensed at the same time to the same patient was established. Results After excluding drugs with low dispensing rates, the analysis covered 39 DDIs. The distribution of risk categories of the analysed DDIs was inconsistent among different drug interaction compendia. The total number of prescriptions filled varied between 173924449 and 176368468 per year. The prevalence of the selected potential DDIs ranged from 0.00 to 355.89 per 100000 prescriptions per year. There was significant variation between how the number of cases had changed for each DDI throughout the study period, no general tendency could have been described. Conclusions There were 1.8 million cases of co-dispensing each year, where prescribers’ and community pharmacists’ role in recognizing and managing potentially serious interactions was or would have been critical. The method presented to identify high-risk DDIs can serve as a starting point for the much-needed improvement of routine interaction screening. Electronic supplementary material The online version of this article (10.1186/s40360-019-0311-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Anna Somogyi-Végh
- Department of Pharmaceutics and Central Clinical Pharmacy, Clinical Centre, University of Pécs, Honvéd u. 3, Pécs, H-7624, Hungary.
| | - Zsófia Ludányi
- IQVIA Solutions Services Kft., Váci út 1-3, Budapest, H-1062, Hungary
| | - Ábel Erdős
- IQVIA Solutions Services Kft., Váci út 1-3, Budapest, H-1062, Hungary
| | - Lajos Botz
- Department of Pharmaceutics and Central Clinical Pharmacy, Clinical Centre, University of Pécs, Honvéd u. 3, Pécs, H-7624, Hungary
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Gröber U, Schmidt J, Kisters K. Important drug-micronutrient interactions: A selection for clinical practice. Crit Rev Food Sci Nutr 2018; 60:257-275. [PMID: 30580552 DOI: 10.1080/10408398.2018.1522613] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Interactions between drugs and micronutrients have received only little or no attention in the medical and pharmaceutical world in the past. Since more and more pharmaceutics are used for the treatment of patients, this topic is increasingly relevant. As such interactions - depending on the duration of treatment and the status of micronutrients - impact the health of the patient and the action of the drugs, physicians and pharmacists should pay more attention to such interactions in the future. This review aims to sensitize physicians and pharmacists on drug micronutrient interactions with selected examples of widely pescribed drugs that can precipitate micronutrient deficiencies. In this context, the pharmacist, as a drug expert, assumes a particular role. Like no other professional in the health care sector, he is particularly predestined and called up to respond to this task. The following article intends to point out the relevance of mutual interactions between micronutrients and various examples of widely used drugs, without claiming to be exhaustive.
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Affiliation(s)
- Uwe Gröber
- Academy of Micronutrient Medicine, Essen, Germany
| | | | - Klaus Kisters
- Academy of Micronutrient Medicine, Essen, Germany.,Medizinische Klinik I, St. Anna Hospital, Herne, Germany
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Abstract
RATIONALE Urinary lithiasis is one of severe postoperative complications in patients undergoing renal transplantation, possibly leading to anuria, urinary infection, or even acute renal failure. Potassium sodium hydrogen citrate (PSHC), a potassium-bearing citrate, is commonly prescribed to prevent stone formation. PATIENT CONCERNS A 25-year-old man (patient 1) and a 31-year-old man (patient 2) receiving renal transplantation for end-stage renal disease (ESRD) were enrolled in this study. They were given 10 g/day of PSHC granules from the ninth day to the 17th day after surgery. Patient 1 presented chest tightness, nausea, muscle weakness, and ascending paralysis on the 10th day. Patient 2 presented weak waves on EGG on the 17th day. Moreover, their serum potassium concentrations (SPCs) were 7.67 and 6.05 mmol/L, respectively. DIAGNOSIS Acute hyperkalemia. INTERVENTIONS Hemo-filtration was performed for patient 1, while patient 2 received 10% calcium gluconate 10 mL, 5% NaHCO3 125 mL, and 10% glucose 500 mL with the addition of 10 units of insulin through intravenous drip. OUTCOMES Their SPCs dropped to the normal range. LESSONS Physicians should pay close attentions to potential risks caused by PSHC, and monitor the SPCs to minimize the occurrence of hyperkalemia.
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Janković SM, Pejčić AV, Milosavljević MN, Opančina VD, Pešić NV, Nedeljković TT, Babić GM. Risk factors for potential drug-drug interactions in intensive care unit patients. J Crit Care 2017; 43:1-6. [PMID: 28822348 DOI: 10.1016/j.jcrc.2017.08.021] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2017] [Revised: 07/23/2017] [Accepted: 08/12/2017] [Indexed: 01/04/2023]
Abstract
PURPOSE To determine risk factors for each severity-based category of potential drug-drug interactions (DDIs) encountered at intensive care unit (ICU) patients. METHODS This was a retrospective cohort analysis of patients treated at the ICU of the Clinical Center Kragujevac, a public tertiary care hospital in Kragujevac, Serbia. Three interaction checkers were used to reveal drug-drug interactions: Medscape, Epocrates and Micromedex. RESULTS The study included 201 patients, 66.19±16.11 years of age. Average number of DDIs per patient ranged from 10.49±8.80 (Micromedex) to 29.43±21.51 (Medscape). Antiarrhythmic or anticonvulsant drug prescription, Charlson Comorbidity Index, male sex, length of hospitalization, number of drugs or therapeutic groups prescribed and surgery increased the risk of DDIs in ICU patients, while presence of delirium or dementia and transfer from emergency department to ICU protected against. CONCLUSIONS The rate of the DDIs in ICU patients at a tertiary care hospital is high, and adversely influenced by number of drugs or drug groups prescribed per patient, antiarrhythmic or anticonvulsant drug prescription, comorbidities, length of hospitalization and surgery. On the other hand, presence of cognitive deficit and transfer from emergency department to ICU protect ICU patients from the DDIs.
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Affiliation(s)
- Slobodan M Janković
- University of Kragujevac, Faculty of Medical Sciences, Pharmacology and Toxicology Department, Svetozara Markovića 69, 34000 Kragujevac, Serbia
| | - Ana V Pejčić
- University of Kragujevac, Faculty of Medical Sciences, Pharmacology and Toxicology Department, Svetozara Markovića 69, 34000 Kragujevac, Serbia.
| | - Miloš N Milosavljević
- University of Kragujevac, Faculty of Medical Sciences, Pharmacology and Toxicology Department, Svetozara Markovića 69, 34000 Kragujevac, Serbia
| | - Valentina D Opančina
- University of Kragujevac, Faculty of Medical Sciences, Pharmacology and Toxicology Department, Svetozara Markovića 69, 34000 Kragujevac, Serbia
| | - Nikola V Pešić
- University of Kragujevac, Faculty of Medical Sciences, Pharmacology and Toxicology Department, Svetozara Markovića 69, 34000 Kragujevac, Serbia
| | - Tamara T Nedeljković
- University of Kragujevac, Faculty of Medical Sciences, Pharmacology and Toxicology Department, Svetozara Markovića 69, 34000 Kragujevac, Serbia
| | - Goran M Babić
- University of Kragujevac, Faculty of Medical Sciences, Department of Gynecology and Obstetrics, Svetozara Markovića 69, 34000 Kragujevac, Serbia
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Eschmann E, Beeler PE, Schneemann M, Blaser J. Developing strategies for predicting hyperkalemia in potassium-increasing drug-drug interactions. J Am Med Inform Assoc 2016; 24:60-66. [PMID: 27174894 DOI: 10.1093/jamia/ocw050] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 03/04/2016] [Accepted: 03/12/2016] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVE To compare different strategies predicting hyperkalemia (serum potassium level ≥5.5 mEq/l) in hospitalized patients for whom medications triggering potassium-increasing drug-drug interactions (DDIs) were ordered. MATERIALS AND METHODS We investigated 5 strategies that combined prediction triggered at onset of DDI versus continuous monitoring and taking into account an increasing number of patient parameters. The considered patient parameters were identified using generalized additive models, and the thresholds of the prediction strategies were calculated by applying Youden's J statistic to receiver operation characteristic curves. Half of the data served as the calibration set, half as the validation set. RESULTS We identified 132 incidences of hyperkalemia induced by 8413 potentially severe potassium-increasing DDIs among 76 467 patients. The positive predictive value (PPV) of those strategies predicting hyperkalemia at the onset of DDI ranged from 1.79% (undifferentiated anticipation of hyperkalemia due to the DDI) to 3.02% (additionally considering the baseline serum potassium) and 3.10% (including further patient parameters). Continuous monitoring significantly increased the PPV to 8.25% (considering the current serum potassium) and 9.34% (additional patient parameters). CONCLUSION Continuous monitoring of the risk for hyperkalemia based on current potassium level shows a better predictive power than predictions triggered at the onset of DDI. This contrasts with efforts to improve DDI alerts by taking into account more patient parameters at the time of ordering.
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Affiliation(s)
- Emmanuel Eschmann
- Research Center for Medical Informatics, Directorate of Research and Education, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Patrick Emanuel Beeler
- Research Center for Medical Informatics, Directorate of Research and Education, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Markus Schneemann
- Division of Internal Medicine, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Jürg Blaser
- Research Center for Medical Informatics, Directorate of Research and Education, University Hospital Zurich and University of Zurich, Zurich, Switzerland
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Sousa AGP, Cabral JVDS, El-Feghaly WB, Sousa LSD, Nunes AB. Hyporeninemic hypoaldosteronism and diabetes mellitus: Pathophysiology assumptions, clinical aspects and implications for management. World J Diabetes 2016; 7:101-111. [PMID: 26981183 PMCID: PMC4781902 DOI: 10.4239/wjd.v7.i5.101] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 01/12/2016] [Accepted: 01/29/2016] [Indexed: 02/05/2023] Open
Abstract
Patients with diabetes mellitus (DM) frequently develop electrolyte disorders, including hyperkalemia. The most important causal factor of chronic hyperkalemia in patients with diabetes is the syndrome of hyporeninemic hypoaldosteronism (HH), but other conditions may also contribute. Moreover, as hyperkalemia is related to the blockage of the renin-angiotensin-aldosterone system (RAAS) and HH is most common among patients with mild to moderate renal insufficiency due to diabetic nephropathy (DN), the proper evaluation and management of these patients is quite complex. Despite its obvious relationship with diabetic nephropathy, HH is also related to other microvascular complications, such as DN, particularly the autonomic type. To confirm the diagnosis, plasma aldosterone concentration and the levels of renin and cortisol are measured when the RAAS is activated. In addition, synthetic mineralocorticoid and/or diuretics are used for the treatment of this syndrome. However, few studies on the implications of HH in the treatment of patients with DM have been conducted in recent years, and therefore little, if any, progress has been made. This comprehensive review highlights the findings regarding the epidemiology, diagnosis, and management recommendations for HH in patients with DM to clarify the diagnosis of this clinical condition, which is often neglected, and to assist in the improvement of patient care.
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Life-threatening Interaction Between Renin-angiotensin-aldosterone System Inhibitors and Trimethoprim-sulfamethoxazole in Older Adults. J Nurse Pract 2016. [DOI: 10.1016/j.nurpra.2015.08.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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10
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Prevalence and clinical significance of potential drug-drug interactions in diabetic patients attended in a tertiary care outpatient center, Brazil. Int J Diabetes Dev Ctries 2015. [DOI: 10.1007/s13410-015-0428-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Varadharaj EK, Jampana N. Effect of potassium present in stratum corneum during non-invasive measurement of potassium in human subjects using reverse iontophoresis. Skin Res Technol 2015; 22:89-97. [PMID: 26040908 DOI: 10.1111/srt.12233] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/15/2015] [Indexed: 11/26/2022]
Abstract
PURPOSE Reverse iontophoresis (RI) is one of the potential techniques used to monitor the concentration of various analytes in body fluids non-invasively. Transdermal extraction of potassium is investigated using RI. In the present work, the effect of potassium on stratum corneum (SC) during RI, feasibility of RI for continuous monitoring of potassium, and use of potassium as internal standard in RI, are investigated. METHODS Tape stripping experiment is carried out to find potassium concentration in SC. RI is carried out continuously for 180 min without passive diffusion and after passive diffusion for 60 min. Skin impedance measurements are done at 20 Hz and 20 kHz. RESULTS Potassium is found to be in the range 300-650 nmol/cm(2) on SC by tape stripping experiment. Correlation coefficient between blood potassium and extracted potassium through RI after passive diffusion (R(2) = 0.5870) is more than without passive diffusion (R(2) = 0.5117). The skin impedance measurement shows that RI has more effect on SC than superficial layer of SC during RI. CONCLUSION The present investigations conclude that it is possible to monitor potassium continuously through RI and using potassium as internal standard in RI.
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Affiliation(s)
- E K Varadharaj
- Department of Instrumentation and Applied Physics, Indian Institute of Science, Bangalore, India
| | - N Jampana
- Department of Instrumentation and Applied Physics, Indian Institute of Science, Bangalore, India
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Fralick M, Macdonald EM, Gomes T, Antoniou T, Hollands S, Mamdani MM, Juurlink DN. Co-trimoxazole and sudden death in patients receiving inhibitors of renin-angiotensin system: population based study. BMJ 2014; 349:g6196. [PMID: 25359996 PMCID: PMC4214638 DOI: 10.1136/bmj.g6196] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
OBJECTIVE To determine whether the prescription of co-trimoxazole with an angiotensin converting enzyme inhibitor or angiotensin receptor blocker is associated with sudden death. DESIGN Population based nested case-control study. SETTING Ontario, Canada, from 1 April 1994 to 1 January 2012. PARTICIPANTS Ontario residents aged 66 years or older treated with an angiotensin converting enzyme inhibitor or angiotensin receptor blocker. Cases were those who died suddenly shortly after receiving an outpatient prescription for one of co-trimoxazole, amoxicillin, ciprofloxacin, norfloxacin, or nitrofurantoin. Each case was matched with up to four controls on age, sex, chronic kidney disease, and diabetes. MAIN OUTCOME MEASURE Odds ratio for the association between sudden death and exposure to each antibiotic relative to amoxicillin, after adjustment for predictors of sudden death according to a disease risk index. RESULTS Of 39,879 sudden deaths, 1027 occurred within seven days of exposure to an antibiotic and were matched to 3733 controls. Relative to amoxicillin, co-trimoxazole was associated with an increased risk of sudden death (adjusted odds ratio 1.38, 95% confidence interval 1.09 to 1.76). The risk was marginally higher at 14 days (adjusted odds ratio 1.54, 1.29 to 1.84). This corresponds to approximately three sudden deaths within 14 days per 1000 co-trimoxazole prescriptions. Ciprofloxacin (a known cause of QT interval prolongation) was also associated with an increased risk of sudden death (adjusted odds ratio 1.29, 1.03 to 1.62), but no such risk was observed with nitrofurantoin or norfloxacin. CONCLUSIONS In older patients receiving angiotensin converting enzyme inhibitors or angiotensin receptor blockers, co-trimoxazole is associated with an increased risk of sudden death. Unrecognized severe hyperkalemia may underlie this finding. When appropriate, alternative antibiotics should be considered in such patients.
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Affiliation(s)
- Michael Fralick
- Department of Internal Medicine, University of Toronto, Toronto, ON, Canada, M5G 2C4
| | - Erin M Macdonald
- Institute for Clinical Evaluative Sciences, Toronto, ON, Canada, M5N 4M5
| | - Tara Gomes
- Institute for Clinical Evaluative Sciences, Toronto, ON, Canada, M5N 4M5 Li Ka Shing Knowledge Institute, St Michael's Hospital, Toronto, ON, Canada, M5B 1W8 Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON, Canada, M5T 3M7
| | - Tony Antoniou
- Institute for Clinical Evaluative Sciences, Toronto, ON, Canada, M5N 4M5 Li Ka Shing Knowledge Institute, St Michael's Hospital, Toronto, ON, Canada, M5B 1W8 Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON, Canada, M5T 3M7 Department of Family and Community Medicine, St Michael's Hospital, Toronto
| | - Simon Hollands
- Institute for Clinical Evaluative Sciences, Toronto, ON, Canada, M5N 4M5
| | - Muhammad M Mamdani
- Institute for Clinical Evaluative Sciences, Toronto, ON, Canada, M5N 4M5 Li Ka Shing Knowledge Institute, St Michael's Hospital, Toronto, ON, Canada, M5B 1W8 Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON, Canada, M5T 3M7 Applied Health Research Centre, St Michael's Hospital, Toronto King Saud University, Riyadh, Saudi Arabia
| | - David N Juurlink
- Institute for Clinical Evaluative Sciences, Toronto, ON, Canada, M5N 4M5 Li Ka Shing Knowledge Institute, St Michael's Hospital, Toronto, ON, Canada, M5B 1W8 Sunnybrook Research Institute, Toronto, ON, Canada, M4N 3M5 Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON, Canada, M5T 3M7
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