Heba Youssef: Can Cefoperazone Cause Coagulopathy?
Heba Youssef, Clinical Nutrition Pharmacist at Helwan General Hospital, shared a post on LinkedIn:
”Cefoperazone can cause a coagulopathy that’s easy to miss. Its NMTT side chain interferes with vitamin K-dependent clotting factors, and in some patients this is made worse by suppression of gut flora that normally produces vitamin K. The result, hypoprothrombinemia, can happen with or without visible bleeding, which is exactly why it needs active monitoring rather than waiting for symptoms.
Patients at higher risk include those with poor nutrition, malabsorption, liver or biliary disease, kidney dysfunction, prolonged or high-dose therapy, or concurrent use of anticoagulants. For these patients, checking baseline and repeat PT/INR and platelet counts is a simple but important safety step.
Giving vitamin K to every patient on cefoperazone isn’t routinely recommended, since the evidence doesn’t support one standard approach. But vitamin K should be given once deficiency or drug-related coagulopathy is suspected or confirmed. A 2024 randomized trial found that 10 mg IV vitamin K weekly reduced coagulopathy and bleeding in high-risk ICU patients, an encouraging finding, though still from a single study rather than an established guideline.
If PT/INR rises unexpectedly during cefoperazone therapy, check for vitamin K deficiency and other causes before blaming the drug alone. And if bleeding continues with no other explanation, that’s a clear signal to stop the drug and follow your institution’s protocol.
References:
- FDA. CEFOBID® (cefoperazone) Prescribing Information. Revised March
- Miao W, Guo J, Cheng H, et al. Risk Factors for Cefoperazone/Sulbactam-Induced Coagulation Disorder. Infect Drug Resist. 2023;16:6277–6284.
- Ebid AI, Abdeen HA, Maher RM, Mohamed-Abdel-Motaleb SM. Cefoperazone-Sulbactam-Induced Coagulopathy in Critically Ill Egyptian Patients: Role of Vitamin K Prophylactic Doses. Hosp Pharm.
- Strom BL, Schinnar R, Gibson GA, Brennan PJ, Berlin JA. Risk of bleeding and hypoprothrombinaemia associated with NMTT side chain antibiotics: using cefoperazone as a test case. Pharmacoepidemiol Drug Saf. ”
Other posts featuring Heba Youssef on Hemostasis Today.
-
Aug 16, 2026, 16:50Carlos Canelo-Aybar: First Steps Toward the New APS Diagnostic Guideline
-
Aug 16, 2026, 16:35Chaza Alaji: Is Prolonged aPTT Before Surgery a Bleeding Risk?
-
Aug 16, 2026, 16:13Juveriya Shaik: Awareness Study on Menstrual Delay Tablets and Risk of DVT
-
Aug 16, 2026, 16:05Bhaskar M.: Blood Bank – The Lifeline of Modern Healthcare
-
Aug 16, 2026, 15:54Oliver Weingärtner: The Care Transition Gap – Why LDL-C Control Is Lost After STEMI
-
Aug 16, 2026, 15:45Gloria Duah: Why Clinical Information Matters When Requesting Blood
-
Aug 16, 2026, 15:42Emmanuel J Favaloro: Latest Collaborative Publication From the Sydney Centres for Thrombosis and Haemostasis
-
Aug 16, 2026, 15:14Waqas Ahmed: Iron-Enriched Yeast Offers a New Approach to Iron Deficiency
-
Aug 16, 2026, 15:11Grace Yau: Inhalable Platelet Lysate Opens New Possibilities for Pulmonary Therapy