TAILIEUCHUNG - Chapter 127. Treatment and Prophylaxis of Bacterial Infections (Part 13)

Macrolides and Ketolides Erythromycin, clarithromycin, and telithromycin inhibit CYP3A4, the hepatic P450 enzyme that metabolizes many drugs, including cyclosporine, certain statins (lovastatin, simvastatin), theophylline, carbamazepine, warfarin, certain antineoplastic agents (., vincristine, irinotecan), and ergot alkaloids. In ~10% of patients receiving digoxin, concentrations increase significantly when erythromycin or telithromycin is coadministered, and this increase may lead to digoxin toxicity. Azithromycin has little effect on the metabolism of other drugs. Many drugs (., azole antifungal drugs, diltiazem, verapamil, and nefazodone) can also increase absorption or inhibit erythromycin metabolism. . | Chapter 127. Treatment and Prophylaxis of Bacterial Infections Part 13 Macrolides and Ketolides Erythromycin clarithromycin and telithromycin inhibit CYP3A4 the hepatic P450 enzyme that metabolizes many drugs including cyclosporine certain statins lovastatin simvastatin theophylline carbamazepine warfarin certain antineoplastic agents . vincristine irinotecan and ergot alkaloids. In 10 of patients receiving digoxin concentrations increase significantly when erythromycin or telithromycin is coadministered and this increase may lead to digoxin toxicity. Azithromycin has little effect on the metabolism of other drugs. Many drugs . azole antifungal drugs diltiazem verapamil and nefazodone can also increase absorption or inhibit erythromycin metabolism. These effects are associated with prolongation of the QT interval and a fivefold increase in mortality rate. This example serves as a reminder that the true significance of drug-drug interactions may be subtle yet profound and that close attention to the evolving safety literature is important. Quinupristin Dalfopristin Quinupristin dalfopristin is an inhibitor of CYP3A4. Its interactions with other drugs should be similar to those of erythromycin. Linezolid Linezolid is a monoamine oxidase inhibitor. Its concomitant administration with sympathomimetics . phenylpropanolamine and with foods with high concentrations of tyramine should be avoided. Many case reports describe serotonin syndrome following coadministration of linezolid with selective serotonin reuptake inhibitors. Tetracyclines The most important interaction involving tetracyclines is reduced absorption when these drugs are coadministered with divalent and trivalent cations such as antacids iron compounds or dairy products. Food also adversely affects absorption of most tetracyclines. Inducers of hepatic isoenzymes such as phenytoin and rifampin increase the clearance of doxycycline although the clinical significance of this effect is unknown use of an

TỪ KHÓA LIÊN QUAN
TAILIEUCHUNG - Chia sẻ tài liệu không giới hạn
Địa chỉ : 444 Hoang Hoa Tham, Hanoi, Viet Nam
Website : tailieuchung.com
Email : tailieuchung20@gmail.com
Tailieuchung.com là thư viện tài liệu trực tuyến, nơi chia sẽ trao đổi hàng triệu tài liệu như luận văn đồ án, sách, giáo trình, đề thi.
Chúng tôi không chịu trách nhiệm liên quan đến các vấn đề bản quyền nội dung tài liệu được thành viên tự nguyện đăng tải lên, nếu phát hiện thấy tài liệu xấu hoặc tài liệu có bản quyền xin hãy email cho chúng tôi.
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.