Effects of flurbiprofen on renal function in patients with moderate renal insufficiency.

MD Murray, PK Greene, DC Brater, AK Manatunga, SD Hall

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21 Scopus citations

Abstract

1. Renal function was assessed in eight patients with chronic renal insufficiency following the administration of flurbiprofen 50 mg as a single dose and after chronic administration of 50 mg four times daily for 8 and 27 days. Diet and fluid intake were controlled. 2. Inulin and creatinine clearances and urinary excretion of sodium were measured at baseline and every 20 min for at least 3 h after dosing. The time of the mean peak concentration of (S)-flurbiprofen was used to guide the analysis of the clearances. Creatinine clearance, urinary excretion of sodium, and serum sodium and potassium were also assessed for 24 h after the dose and on a daily basis. Body weight and blood pressure were measured on a daily basis. 3. Decrements in inulin and creatinine clearances were small and reversible within 3 h of an oral dose of flurbiprofen. Comparison of baseline clearances for the three study periods (first dose and at 8 and 27 days of chronic dosing) revealed a lack of chronic effect on glomerular filtration rate. 4. In contrast, flurbiprofen caused a substantial (73 to 86%) and progressive decrease in the urinary excretion of sodium that reached a nadir within 4-5 h after drug administration. However, comparison of baseline values did not differ, indicating that balance conditions has been re-established. 5. Results of 24 h assessments were in agreement with the clearance study results. Reduced urinary excretion of sodium appeared to be limited to the first few days of flurbiprofen administration. Serum potassium concentration increased by 0.44 mEq 1-1 ± 0.14 within the first week after chronic flurbiprofen dosing, but then decreased to baseline despite continued administration of the drug. Body weight and systolic and diastolic blood pressures remained relatively stable while patients received flurbiprofen in conjunction with a controlled sodium diet but in the absence of the controlled diet they increased by 2.8 ± 0.4 kg, 26.7 ± 7.5 mm Hg, and 12.1 ± 4.6 mm Hg, respectively. 6. Flurbiprofen administration at this dosage appears to cause no overall chronic adverse effects on renal function in patients with moderate renal insufficiency. Serum potassium concentration, patient weight and blood presure increase to a minor degree but to an extent likely to be clinically important in some patients.

Original languageEnglish (US)
Pages (from-to)385-393
Number of pages9
JournalBritish Journal of Clinical Pharmacology
Volume33
Issue number4
DOIs
StatePublished - Apr 1992

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Keywords

  • Adverse renal effects
  • Flurbiprofen
  • Glomerular filtration
  • Natriuresis

ASJC Scopus subject areas

  • Pharmacology (medical)
  • Pharmacology, Toxicology and Pharmaceutics(all)

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