Transient trifascicular block secondary to tricuspid valve endocarditis.

A 76-year-old woman presented with fever that began 2 days previously, along with general malaise and dyspnea. She had a history of hypertension and dyslipidemia, and was undergoing dialysis for chronic end-stage renal failure via a permanent internal jugular vein catheter. Laboratory studies revealed leukocytosis with left shift, along with white blood cells and bacteria in urinary sediment. She was admitted to hospital with a diagnosis of febrile syndrome probably due to a urinary tract infection, and antibiotic treatment was initiated with levofloxacin. Four days after admission, she had a long episode of nausea