Drug-induced Liver Injury Following Prolonged use of Nitrofurantoin.

Nitrofurantoin is the antibiotic of choice for treatment and prophylaxis of recurrent episodes of lower urinary tract infections. Although adverse effects such as anorexia, vomiting, and pulmonary hypersensitivity are commonly reported with nitrofurantoin use, studies have demonstrated that rarely nitrofurantoin can also induce diverse forms of liver injury, spanning from mild hepatitis to severe and potentially fatal fulminant liver failure. These occur especially in elderly females with preexisting liver or renal impairment.

Higher Levels of Creatine Kinase MB (CK-MB) Than Total Creatine Kinase (CK): A Biochemistry Reporting Error or an Indicator of Other Pathologies?

The creatine kinase (CK) enzyme and its isoenzymes hold significant diagnostic value, appearing in distinct patterns across various tissues. The most common method for creatine kinase MB (CK-MB) estimation is based on immunoinhibition. However, this method can report falsely elevated CK-MB levels in various scenarios.