zithromax and Rhabdomyolysis

Typhoid fever is an important cause of morbidity and mortality in the developing world, particularly in children, but is infrequently observed in the developed world and can occur in patients without a significant travel history. Rhabdomyolysis as a complication has rarely been reported, and never in a child. A child with Salmonella enterica serovar Typhi septicemia, complicated by rhabdomyolysis, encephalopathy and pancreatitis is described and all 15 reported cases to date are summarized.

Topics: Anti-Bacterial Agents; Azithromycin; Child; Female; Humans; Rhabdomyolysis; Typhoid Fever

A case of Legionella pneumophila pneumonia with rhabdomyolysis-induced acute tubulointerstitial nephritis (ATIN) and prolonged renal dysfunction is presented. The patient was a 54-year-old man, admitted with high-grade fever, ataxia and muscle dysfunction; chest roentgenogram showed multilobular infiltrations. L pneumophila was detected in his sputum and urine, by PCR and by culture, and L pneumophila pneumonia was diagnosed. Despite antimicrobial treatment, he developed renal failure and rhabdomyolysis. Renal biopsy showed the presence of myoglobin casts that occluded the distal tubuli and tubulointerstitial nephritis, leading to the diagnosis of rhabdomyolysis-induced ATIN. Renal function subsequently normalised, and he was discharged. This is believed to be the first pathological evidence of involvement of rhabdomyolysis in legionellosis-associated ATIN.

Topics: Anti-Bacterial Agents; Azithromycin; Ciprofloxacin; Humans; Kidney; Legionella pneumophila; Legionnaires' Disease; Male; Middle Aged; Nephritis, Interstitial; Rhabdomyolysis; Rifampin

BACKGROUND Legionella infection is a common cause of atypical pneumonia, known as Legionnaires' disease when infection extends to extrapulmonary involvement, which often leads to hospitalization. The triad of Legionella pneumonia, rhabdomyolysis, and renal failure displays a rare yet fatal complication without prompt management. CASE REPORT Our patient was a 62-year-old man with no significant medical history who developed Legionnaires' disease with severely elevated creatinine phosphokinase (CPK) of 9614 mcg/L, consistent with rhabdomyolysis. He experienced severe headache, anorexia, and hematuria, which prompted him to seek medical care. Pertinent social history included recent flooding in his neighborhood, which surrounded the outer perimeter of his home. His clinical manifestations and laboratory findings were consistent with Legionella infection, with concomitant acute kidney injury. A chest X-ray revealed hazy left perihilar opacities concerning for atypical pneumonia. Immediate interventions of hydration and antigen-directed azithromycin were initiated to prevent rapid decompensation. His clinical symptoms resolved without further complications, and he was not transferred to the Intensive Care Unit (ICU). CONCLUSIONS Legionella-induced rhabdomyolysis is an uncommon association that can lead to acute kidney failure and rapid clinical deterioration. Early and aggressive management with fluid repletion and appropriate antibiotics can improve clinical manifestations and hospital length of stay. Our patient's reduction in CPK levels and clinical improvement confirmed that extrapulmonary involvement in Legionella infection can lead to rhabdomyolysis. It is important for healthcare providers to recognize the clinical triad of Legionella pneumonia, rhabdomyolysis, and renal failure as prompt and timely management to reduce associated morbidity.

Topics: Acute Kidney Injury; Azithromycin; Humans; Influenza, Human; Legionnaires' Disease; Male; Middle Aged; Pneumonia, Mycoplasma; Rhabdomyolysis

Unlike other macrolide antibiotics, azithromycin is considered safe to co-prescribe with simvastatin. We aim to elucidate the mechanism of a rare azithromycin-simvastatin interaction.. We report a case of simvastatin-induced rhabdomyolysis caused by an azithromycin drug interaction in a patient with heterozygous SLCO1B1 loss-of-function polymorphism. We propose a dual-hit mechanism for this drug-drug-genome interaction. Azithromycin mildly inhibits simvastatin's CYP 3A4 hepatic metabolism, and the SLCO1B1 polymorphism reduces simvastatin hepatic uptake. The combination increases simvastatin serum concentrations significantly, inducing rhabdomyolysis.. Patients with statin-induced myopathy associated with non-classic CYP inhibitors should be considered for genetic testing and alternative statins with less risk of future interactions.

Topics: Aged; Anti-Bacterial Agents; Azithromycin; Cytochrome P-450 CYP3A Inhibitors; Drug Interactions; Humans; Hydroxymethylglutaryl-CoA Reductase Inhibitors; Hypolipidemic Agents; Liver-Specific Organic Anion Transporter 1; Male; Polymorphism, Single Nucleotide; Rhabdomyolysis

The presence of rhabdomyolysis secondary to multiple infections has been reported, predominantly viral, but also bacterial and fungal. It is well known that COVID-19 can present a wide variety of complications during the course of infection; however, the presence of rhabdomyolysis as an initial condition has not been reported so far. We report a case of rhabdomyolysis as an initial presentation in a patient diagnosed with SARS-CoV-2 (Severe Acute Respiratory Syndrome Coronavirus 2) infection.

Topics: Aged; Anti-Bacterial Agents; Antibodies, Monoclonal, Humanized; Anticoagulants; Azithromycin; Betacoronavirus; Bicarbonates; Ceftriaxone; Coronavirus Infections; COVID-19; Cytochrome P-450 CYP3A Inhibitors; Enoxaparin; Enzyme Inhibitors; Fluid Therapy; Humans; Hydroxychloroquine; Lopinavir; Lung; Male; Pandemics; Pneumonia, Viral; Respiration, Artificial; Rhabdomyolysis; Ritonavir; SARS-CoV-2; Tomography, X-Ray Computed; Treatment Outcome

The case-crossover design may be useful for evaluating the clinical impact of drug-drug interactions in electronic healthcare data; however, experience with the design in this context is limited.. Using US healthcare claims data (1994-2013), we evaluated two examples of interacting drugs with prior evidence of harm: (1) cytochrome P450 (CYP)3A4-metabolized statins + clarithromycin or erythromycin and rhabdomyolysis; and (2) clopidogrel + fluoxetine or fluvoxamine and ischemic events. We conducted case-crossover analyses with (1) a three-parameter model with a product term and a six-parameter saturated model that distinguished initiation order of the two drugs; and (2) with or without active comparators.. In the statin example, the three-parameter model produced estimates consistent with prior evidence with the active comparator (product term odds ratio [OR] = 2.05, 95% confidence interval [CI] = 1.00, 4.23) and without (OR = 1.99, 95% CI = 1.04, 3.81). In the clopidogrel example, this model produced results opposite of expectation (OR = 0.78, 95% = 0.68, 0.89), but closer to what was observed in prior studies when active comparator was used (OR = 1.03, 95% CI = 0.90, 1.19). The saturated model revealed heterogeneity of estimates across strata and considerable confounding; strata with concordant clopidogrel exposure likely produced the least biased estimates.. The three-parameter model assumes a common drug-drug interaction effect, whereas the saturated model is useful for identifying potential effect heterogeneity or differential confounding across strata. Restriction to certain strata or use of an active comparator may be necessary in the presence of within-person confounding.

Topics: Administrative Claims, Healthcare; Azithromycin; Clarithromycin; Clopidogrel; Cross-Over Studies; Cytochrome P-450 CYP2C19; Cytochrome P-450 CYP3A; Drug Interactions; Electronic Health Records; Humans; Hydroxymethylglutaryl-CoA Reductase Inhibitors; Implementation Science; Models, Statistical; Rhabdomyolysis; Risk Factors; Serotonin and Noradrenaline Reuptake Inhibitors; Treatment Outcome

Legionnaires' disease is a recognised but rare cause of rhabdomyolysis. It can be further complicated with renal impairment. In this case report, we describe a previously healthy, semiactive 50-year-old man who within days was reduced to having periods of dyspnea after minutes of walking in addition to near fatal acute renal failure. He was found to have the rare triad of

Topics: Acute Kidney Injury; Anti-Bacterial Agents; Azithromycin; Diagnosis, Differential; Humans; Legionella pneumophila; Legionnaires' Disease; Male; Middle Aged; Pneumonia; Rhabdomyolysis; Treatment Outcome

Clarithromycin and erythromycin, but not azithromycin, inhibit cytochrome P450 isoenzyme 3A4 (CYP3A4), and inhibition increases blood concentrations of statins that are metabolized by CYP3A4.. To measure the frequency of statin toxicity after coprescription of a statin with clarithromycin or erythromycin.. Population-based cohort study.. Ontario, Canada, from 2003 to 2010.. Continuous statin users older than 65 years who were prescribed clarithromycin (n = 72,591) or erythromycin (n = 3267) compared with those prescribed azithromycin (n = 68,478).. The primary outcome was hospitalization with rhabdomyolysis within 30 days of the antibiotic prescription.. Atorvastatin was the most commonly prescribed statin (73%) followed by simvastatin and lovastatin. Compared with azithromycin, coprescription of a statin with clarithromycin or erythromycin was associated with a higher risk for hospitalization with rhabdomyolysis (absolute risk increase, 0.02% [95% CI, 0.01% to 0.03%]; relative risk [RR], 2.17 [CI, 1.04 to 4.53]) or with acute kidney injury (absolute risk increase, 1.26% [CI, 0.58% to 1.95%]; RR, 1.78 [CI, 1.49 to 2.14]) and for all-cause mortality (absolute risk increase, 0.25% [CI, 0.17% to 0.33%]; RR, 1.56 [CI, 1.36 to 1.80]).. Only older adults were included in the study. The absolute risk increase for rhabdomyolysis may be underestimated because the codes used to identify it were insensitive.. In older adults, coprescription of clarithromycin or erythromycin with a statin that is metabolized by CYP3A4 increases the risk for statin toxicity.. Academic Medical Organization of Southwestern Ontario.

Topics: Acute Kidney Injury; Aged; Anti-Bacterial Agents; Azithromycin; Cause of Death; Clarithromycin; Cytochrome P-450 CYP3A Inhibitors; Drug Interactions; Erythromycin; Female; Humans; Hydroxymethylglutaryl-CoA Reductase Inhibitors; Male; Retrospective Studies; Rhabdomyolysis

We developed a semi-automated active monitoring system that uses sequential matched-cohort analyses to assess drug safety across a distributed network of longitudinal electronic health-care data. In a retrospective analysis, we show that the system would have identified cerivastatin-induced rhabdomyolysis. In this study, we evaluated whether the system would generate alerts for three drug-outcome pairs: rosuvastatin and rhabdomyolysis (known null association), rosuvastatin and diabetes mellitus, and telithromycin and hepatotoxicity (two examples for which alerting would be questionable). Over >5 years of monitoring, rate differences (RDs) in comparisons of rosuvastatin with atorvastatin were -0.1 cases of rhabdomyolysis per 1,000 person-years (95% confidence interval (CI): -0.4, 0.1) and -2.2 diabetes cases per 1,000 person-years (95% CI: -6.0, 1.6). The RD for hepatotoxicity comparing telithromycin with azithromycin was 0.3 cases per 1,000 person-years (95% CI: -0.5, 1.0). In a setting in which false positivity is a major concern, the system did not generate alerts for the three drug-outcome pairs.

Topics: Aged; Anti-Bacterial Agents; Azithromycin; Chemical and Drug Induced Liver Injury; Diabetes Mellitus; Drug Monitoring; Electronic Data Processing; Electronic Health Records; Female; Humans; Hydroxymethylglutaryl-CoA Reductase Inhibitors; Ketolides; Male; Outcome Assessment, Health Care; Product Surveillance, Postmarketing; Retrospective Studies; Rhabdomyolysis

We report a case of colchicine-induced rhabdomyolysis in a heart/lung-transplanted man treated with cyclosporin. A treatment was to resolve an acute gouty arthritis and was started with 3 mg of colchicine the first day, then 2 mg the second and the third day, and finally 1 mg/d during 6 days. Eight days later, the patient developed multiple organ failure and rhabdomyolysis. The concentration of colchicine analyzed was greater than the standard 153 hours after his last intake. Pharmacokinetic interactions are responsible of this toxicity. Cyclosporin, pravastatin, and azithromycin are known to inhibit P-glycoprotein, which will enhance the intracellular colchicine level by acting in its bioavailability and moderating hepatic and renal excretion. Moreover, long-term treatment by cyclosporin generates chronic renal failure that will, in the same time, decrease colchicine elimination. Even short-term administration of therapeutic colchicine dose may cause colchicine-related toxicity, especially in the setting of a renal failure and/or polymedicinal treatment.

Topics: Adult; Anti-Bacterial Agents; Anticholesteremic Agents; ATP Binding Cassette Transporter, Subfamily B, Member 1; Azithromycin; Colchicine; Cyclosporine; Cystic Fibrosis; Drug Interactions; Gout; Gout Suppressants; Heart-Lung Transplantation; Humans; Immunosuppressive Agents; Kidney Failure, Chronic; Male; Multiple Organ Failure; Pravastatin; Rhabdomyolysis

In a systematic screening of the World Health Organization Adverse Drug Reaction database, VigiBase, in July 2008, a measure of association used to detect interactions (Omega) highlighted azithromycin with the individual statins atorvastatin, lovastatin and simvastatin and rhabdomyolysis. The aim was to examine all reports including rhabdomyolysis-azithromycin and statins in VigiBase to assess if the data were suggestive of an interaction.. The individual case reports in VigiBase and the original files were reviewed. In order to investigate the reporting over time for rhabdomyolysis with azithromycin and statins to VigiBase, Omega values were generated retrospectively.. The reporting over time showed that rhabdomyolysis under concomitant use of azithromycin and statins was reported more often than expected from 2000 and onwards in Vigibase. After exclusion of possible duplicates and follow-up reports, 53 cases from five countries remained. Rhabdomyolysis occurred shortly after initiation of azithromycin in 23% of cases. In 11 patients an interaction had been suggested by the reporter. With the exception of one patient, the statin doses reported were within the recommended daily doses.. Case reports in VigiBase are suggestive that interactions between azithromycin and statins resulting in rhabdomyolysis may occur. This analysis showed the potential of the newly developed disproportionality measure, Omega, which can help to identify drug interactions in VigiBase in the future. The results also showed that reviewing spontaneous reports can add information to drug interactions not established previously.

Topics: Adult; Adverse Drug Reaction Reporting Systems; Aged; Aged, 80 and over; Atorvastatin; Azithromycin; Databases, Factual; Female; Heptanoic Acids; Humans; Hydroxymethylglutaryl-CoA Reductase Inhibitors; Lovastatin; Male; Middle Aged; Pravastatin; Pyridines; Pyrroles; Rhabdomyolysis; Simvastatin