High transdermal fentanyl requirements in a patient with chronic cancer pain.

OBJECTIVE: To report a case of high transdermal fentanyl dosage requirements in a patient with chronic cancer pain. DATA SOURCES: Clinical studies, review articles, and relevant laboratory information. CASE SUMMARY: A 42-year-old woman with cervical cancer was admitted for control of her pain. Her outpatient analgesic regimen was a continuous intravenous infusion of morphine sulfate (MS) via an ambulatory infusion device. Upon admission, supplemental doses of intravenous MS were administered in an effort to eliminate the pain. Transdermal fentanyl therapy was initiated on hospital day 1 at 100 micrograms/h and the MS continuous intravenous infusion dosage was increased. Over the next four days, the patient experienced episodes of inadequate pain control and the transdermal fentanyl dosage was increased in increments of 100 micrograms/h. On hospital day 4 the MS continuous infusion was converted to patient-controlled analgesia (PCA). The patient reported acceptable pain control with a regimen of transdermal fentanyl 500 micrograms/h and MS via PCA and she was discharged home on hospital day 7. CONCLUSIONS: This patient's high transdermal fentanyl dosage requirement was related to disease progression. She experienced an acute pain episode that may have been effectively managed by increasing the dosage of her continuous intravenous MS infusion.

Fulminant hepatic failure possibly related to ciprofloxacin.

OBJECTIVE: To report a case of hepatic failure in a patient who was receiving oral ciprofloxacin. DATA SOURCES: Case reports, review articles, and relevant laboratory studies identified by MEDLINE. DATA EXTRACTION: Data were abstracted from pertinent published sources by one author and reviewed by the remaining authors. DATA SYNTHESIS: A 66-year-old man was admitted for hip arthroplasty and developed fulminant hepatic failure during oral ciprofloxacin therapy. Ciprofloxacin was started on postoperative day 13 for treatment of a urinary tract infection. Over the next three days he became confused and hypoglycemic. His prothrombin time increased to greater than 90 s. Serum aspartate aminotransferase and alanine aminotransferase concentrations were markedly elevated. The patient died on postoperative day 20. Postmortem examination of the liver revealed extensive centrilobular necrosis. A skin biopsy was consistent with a drug reaction. It is unknown whether the patient had received a quinolone compound in the past or had a history of exposure to hepatotoxins. CONCLUSIONS: It cannot be concluded that ciprofloxacin directly caused hepatic failure in this patient. It is possible that the drug evoked a hypersensitivity reaction or exacerbated a preexisting hepatotoxicity. A detailed patient history and evaluation of hepatic function should be obtained prior to initiating ciprofloxacin therapy. A nonquinolone antimicrobial may be a safer alternative for patients with hepatic dysfunction.