Piperacillin-tazobactam administration in a patient on rivaroxaban was associated with massive gastrointestinal bleeding, which resolved upon discontinuation of both medications.
Case Report (n=1)
Does the addition of piperacillin-tazobactam to rivaroxaban increase the risk of massive gastrointestinal bleeding in patients with deep vein thrombosis?
This first reported case suggests a potential severe drug interaction between piperacillin-tazobactam and rivaroxaban leading to massive gastrointestinal bleeding, highlighting the need for vigilant monitoring.
Anticoagulated patients are at increased risk of complications from drug interactions, including with antibiotics. Piperacillin–tazobactam (PTZ) has been associated with coagulation disruptions, potentially leading to severe bleeding when combined with anticoagulants like rivaroxaban. This report describes the first known case of massive gastrointestinal (GI) bleeding potentially associated with PTZ in a rivaroxaban‐treated patient, successfully managed by discontinuing both drugs. We present a 52‐year‐old male with deep vein thrombosis on rivaroxaban, admitted for severe left leg cellulitis. Shortly after starting PTZ, he experienced massive GI bleeding with hematochezia, hematemesis, and syncope, requiring urgent intervention, cessation of both medications, and esophagogastroduodenoscopy (EGD), which revealed minor erosions. The temporal relationship suggests a possible PTZ‐induced hemostasis disruption or interaction with rivaroxaban. This case highlights the need for research into PTZ–anticoagulant interactions and emphasizes vigilant monitoring and timely management to reduce life‐threatening bleeding risks in anticoagulated patients.
Mohammadi et al. (Thu,) conducted a case report in Deep vein thrombosis and severe left leg cellulitis (n=1). Piperacillin-tazobactam (PTZ) combined with rivaroxaban was evaluated on Massive gastrointestinal bleeding. Piperacillin-tazobactam administration in a patient on rivaroxaban was associated with massive gastrointestinal bleeding, which resolved upon discontinuation of both medications.